291 FNUS56 KPDT 301336 FWFPDT Fire Weather Planning Forecast for NE Oregon and SE Washington National Weather Service Pendleton OR 636 AM PDT Wed Jul 30 2025 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 9 PM PDT THIS EVENING FOR ABUNDANT LIGHTNING FOR FIRE WEATHER ZONE WA695 ... ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 11 AM PDT THURSDAY FOR ABUNDANT LIGHTNING FOR FIRE WEATHER ZONES OR700, OR704, AND OR705 ... .DISCUSSION...Another round of thunderstorms is expected to flare up across the Cascades this afternoon in light of a weather pattern supportive of above-average temperatures and atmospheric moisture. This pattern will remain in place through the rest of the week, with shower and thunderstorm coverage expected to become more widespread starting early Thursday morning and lasting through Friday. Temperatures will cool down Friday onward, but shower and thunderstorm chances will continue over the eastern mountains through the weekend. ***Thunderstorms imply strong gusty winds*** ***Winds are 20 foot 10 minute averages*** ***CWR-chance of wetting rain 0.10 or greater*** ***Ventilation Index is derived from the transport wind multiplied by the mixing height in 100's of feet. Index categories are a generalized indicator and users are encourage to develop criteria that are suitable and representative of dispersion conditions in their local area of interest.*** Note: Max transport winds may not occur at the same time as max mixing height. WAZ695-302315- East Washington South Central Cascade Mountains- 636 AM PDT Wed Jul 30 2025 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 9 PM PDT THIS EVENING... .TODAY... * Sky/weather.........Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. * Max temperature.....85-95...except 77-85 ridges. * Min humidity........18-28 percent. * 20-foot winds....... * Valleys/lwr slopes...North winds 1 to 5 mph. * Ridges/upr slopes....North winds 1 to 5 mph. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......14000 ft agl. * Transport winds.....North around 5 mph. * Ventilation Index...Poor (44-108) increasing to poor to good (117-533) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. A slight chance of thunderstorms in the evening. A slight chance of showers. * Min temperature.....57-66. * Max humidity........44-59 percent. * Humidity recovery...Moderate. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 2 to 7 mph. * Ridges/upr slopes....Northwest winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....10 percent (very low chance). * Mixing height.......Near surface. * Transport winds.....Northwest around 10 mph. * Ventilation Index...Poor to fair (105-327) decreasing to poor (29-87) after midnight. .THURSDAY... * Sky/weather.........Partly cloudy. A slight chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. * Max temperature.....80-90...except 71-81 ridges. * Min humidity........31-46 percent. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 2 to 7 mph. * Ridges/upr slopes....Northwest winds 2 to 7 mph. * CWR.................20 percent. * Chc of lightning....30 percent (chance). * Mixing height.......9000 ft agl. * Transport winds.....Northwest around 10 mph. * Ventilation Index...Poor (35-111) increasing to poor to fair (162-404) in the afternoon. .Forecast days 3 through 7...... .FRIDAY...Cooler. Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 52 to 60. Highs 63 to 76. Northwest winds 4 to 10 mph. .SATURDAY...A slight chance of showers. Partly cloudy. Lows 49 to 56. Highs 64 to 78. Northwest winds 4 to 9 mph. .SUNDAY...Partly cloudy. Lows 46 to 53. Highs 62 to 77. West winds 4 to 9 mph. .MONDAY...Partly cloudy with a slight chance of showers. Lows 45 to 52. Highs 58 to 72. West winds 4 to 9 mph. .TUESDAY...Partly cloudy with a slight chance of showers. Lows 45 to 52. Highs 59 to 73. West winds 3 to 8 mph. $$ WAZ690-302315- Kittitas Valley- 636 AM PDT Wed Jul 30 2025 .TODAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. * Max temperature.....94-101...except 83-95 ridges. * Min humidity........13-18 percent. * 20-foot winds....... * Valleys/lwr slopes...Northeast winds 2 to 7 mph. * Ridges/upr slopes....Northeast winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......14500 ft agl. * Transport winds.....North 5 to 10 mph. * Ventilation Index...Poor (88-162) increasing to good to excellent (579-805) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. * Min temperature.....67-74. * Max humidity........35-48 percent. * Humidity recovery...Poor. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 4 to 9 mph. * Ridges/upr slopes....Northwest winds 5 to 11 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....Northwest around 15 mph. * Ventilation Index...Fair to good (416-556) decreasing to poor (45-117) after midnight. .THURSDAY... * Sky/weather.........Partly cloudy. A chance of showers and a slight chance of thunderstorms in the afternoon. * Max temperature.....91-98...except 81-92 ridges. * Min humidity........22-30 percent. * 20-foot winds....... * Valleys/lwr slopes...North winds 4 to 9 mph. * Ridges/upr slopes....North winds 4 to 9 mph. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......12500 ft agl. * Transport winds.....North 10 to 15 mph. * Ventilation Index...Poor to fair (105-213) increasing to fair to excellent (485-797) in the afternoon. .Forecast days 3 through 7...... .FRIDAY...Not as warm. Mostly cloudy with a chance of showers and thunderstorms. Lows 62 to 68. Highs 78 to 86. Northwest winds 7 to 13 mph. .SATURDAY...A slight chance of showers. Partly cloudy. Lows 57 to 62. Highs 81 to 89. Northwest winds 5 to 11 mph. .SUNDAY...Mostly clear. Lows 54 to 60. Highs 78 to 86. Northwest winds 7 to 13 mph. .MONDAY...Partly cloudy with a slight chance of showers. Lows 54 to 60. Highs 74 to 83. Northwest winds 5 to 11 mph. .TUESDAY...Partly cloudy. Lows 53 to 58. Highs 75 to 84. West winds 5 to 11 mph. $$ WAZ694-302315- Yakama Alpine District- 636 AM PDT Wed Jul 30 2025 .TODAY... * Sky/weather.........Partly cloudy. A slight chance of showers in the afternoon. * Max temperature.....89-96...except 79-90 ridges. * Min humidity........16-27 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming southeast 1 to 5 mph in the afternoon. * Ridges/upr slopes....Northeast winds 1 to 6 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......13000 ft agl. * Transport winds.....Northeast around 5 mph. * Ventilation Index...Poor (36-84) increasing to poor to good (95-509) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy then becoming partly cloudy. * Min temperature.....57-65. * Max humidity........49-64 percent. * Humidity recovery...Moderate. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 2 to 7 mph. * Ridges/upr slopes....Northwest winds 3 to 8 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....Northwest around 10 mph. * Ventilation Index...Poor to fair (189-357) decreasing to poor (26-66) after midnight. .THURSDAY... * Sky/weather.........Partly cloudy then becoming mostly cloudy. A slight chance of showers in the morning, then a chance of showers and a slight chance of thunderstorms in the afternoon. * Max temperature.....79-90...except 73-83 ridges. * Min humidity........30-45 percent. * 20-foot winds....... * Valleys/lwr slopes...West winds 2 to 7 mph. * Ridges/upr slopes....West winds 2 to 7 mph. * CWR.................20 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......6000 ft agl. * Transport winds.....Northwest around 10 mph. * Ventilation Index...Poor (30-80) increasing to poor to fair (174-388) in the afternoon. .Forecast days 3 through 7...... .FRIDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 53 to 60. Highs 70 to 83. West winds 3 to 8 mph. .SATURDAY...Mostly clear. Lows 49 to 56. Highs 71 to 84. West winds 2 to 7 mph. .SUNDAY...Mostly clear. Lows 46 to 53. Highs 68 to 81. West winds 3 to 8 mph. .MONDAY...A slight chance of showers. Partly cloudy. Lows 45 to 53. Highs 64 to 78. West winds 3 to 8 mph. .TUESDAY...Partly cloudy. Lows 45 to 53. Highs 65 to 79. West winds 2 to 7 mph. $$ ORZ691-WAZ691-302315- Lower Columbia Basin of Oregon-Lower Columbia Basin of Washington- 636 AM PDT Wed Jul 30 2025 .TODAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. * Max temperature.....94-102. * Min humidity........12-17 percent. * 20-foot winds....... * Valleys/lwr slopes...West winds 2 to 5 mph shifting to the north 3 to 6 mph in the afternoon. * Ridges/upr slopes....North winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......14000 ft agl. * Transport winds.....Northwest 5 to 10 mph. * Ventilation Index...Poor (34-80) increasing to fair to good (402-604) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. * Min temperature.....65-70. * Max humidity........44-59 percent. * Humidity recovery...Moderate. * 20-foot winds....... * Valleys/lwr slopes...West winds 3 to 8 mph. * Ridges/upr slopes....West winds 4 to 9 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....Northwest around 10 mph. * Ventilation Index...Fair (249-405) decreasing to poor (33-75) after midnight. .THURSDAY... * Sky/weather.........Partly cloudy. A slight chance of showers in the morning. A chance of showers and a slight chance of thunderstorms in the afternoon. * Max temperature.....85-97. * Min humidity........23-33 percent. * 20-foot winds....... * Valleys/lwr slopes...West winds 4 to 10 mph. * Ridges/upr slopes....West winds 4 to 10 mph. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......11000 ft agl. * Transport winds.....West around 15 mph. * Ventilation Index...Poor (73-195) increasing to fair to good (312-548) in the afternoon. .Forecast days 3 through 7...... .FRIDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 61 to 68. Highs 82 to 88. West winds 5 to 11 mph. .SATURDAY...A slight chance of showers. Mostly clear. Lows 58 to 64. Highs 84 to 91. West winds 4 to 9 mph. .SUNDAY...Mostly clear. Lows 55 to 61. Highs 80 to 88. West winds 5 to 11 mph. .MONDAY...A slight chance of showers. Partly cloudy. Lows 53 to 60. Highs 76 to 84. West winds 5 to 11 mph. .TUESDAY...Partly cloudy. Lows 53 to 59. Highs 78 to 86. Southwest winds 5 to 11 mph. $$ ORZ692-WAZ692-302315- Northern Blue Mountains of Oregon-Blue Mountains of Washington- 636 AM PDT Wed Jul 30 2025 .TODAY... * Sky/weather.........Mostly sunny then becoming partly cloudy. * Max temperature.....87-97...except 80-85 ridges. * Min humidity........17-22 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming north 2 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming north 2 to 5 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......13000 ft agl. * Transport winds.....North 5 to 10 mph. * Ventilation Index...Poor (27-69) increasing to good to excellent (524-716) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. * Min temperature.....59-67. * Max humidity........41-55 percent. * Humidity recovery...Moderate. * 20-foot winds....... * Valleys/lwr slopes...North winds 1 to 5 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....North winds 2 to 5 mph in the evening becoming light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....Northwest around 10 mph. * Ventilation Index...Fair (220-326) decreasing to poor (25-54) after midnight. .THURSDAY... * Sky/weather.........Partly cloudy. A chance of showers and a slight chance of thunderstorms in the afternoon. * Max temperature.....82-91...except 76-81 ridges. * Min humidity........26-34 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2 to 6 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming northwest 2 to 5 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......9500 ft agl. * Transport winds.....West around 10 mph. * Ventilation Index...Poor (30-124) increasing to fair (200-370) in the afternoon. .Forecast days 3 through 7...... .FRIDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 55 to 62. Highs 70 to 83. West winds 1 to 6 mph. .SATURDAY...A slight chance of showers. Mostly clear. Lows 52 to 60. Highs 73 to 85. West winds 2 to 7 mph. .SUNDAY...Mostly clear. Lows 50 to 58. Highs 72 to 83. West winds 2 to 7 mph. .MONDAY...A slight chance of showers. Mostly cloudy. Lows 49 to 57. Highs 65 to 77. West winds 2 to 7 mph. .TUESDAY...Partly cloudy. Lows 47 to 54. Highs 68 to 79. West winds 2 to 7 mph. $$ ORZ693-WAZ693-302315- Canyon Grasslands of Wallowa County- Southeast Washington Grande Ronde Valley- 636 AM PDT Wed Jul 30 2025 .TODAY... * Sky/weather.........Mostly sunny then becoming partly cloudy. * Max temperature.....87-96...except 80-89 ridges. * Min humidity........16-21 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming north 2 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming north 3 to 6 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......14500 ft agl. * Transport winds.....Northeast 5 to 10 mph. * Ventilation Index...Poor (25-61) increasing to good to excellent (641-761) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. * Min temperature.....58-67. * Max humidity........42-57 percent. * Humidity recovery...Moderate...except Poor ridges. * 20-foot winds....... * Valleys/lwr slopes...North winds 1 to 5 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....North winds 2 to 6 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....North 5 to 10 mph. * Ventilation Index...Fair (273-371) decreasing to poor (25-50) after midnight. .THURSDAY... * Sky/weather.........Partly cloudy. A chance of showers and thunderstorms in the afternoon. * Max temperature.....85-94...except 79-86 ridges. * Min humidity........23-30 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph becoming north 3 to 6 mph in the afternoon. * CWR.................10 percent. * Chc of lightning....30 percent (chance). * Mixing height.......10000 ft agl. * Transport winds.....Northwest around 5 mph. * Ventilation Index...Poor (25-56) increasing to fair (207-369) in the afternoon. .Forecast days 3 through 7...... .FRIDAY...Not as warm. Mostly cloudy with showers likely and a chance of thunderstorms. Lows 54 to 62. Highs 74 to 83. West winds 1 to 5 mph. .SATURDAY...A chance of showers and a slight chance of thunderstorms. Partly cloudy. Lows 51 to 60. Highs 77 to 86. Terrain driven winds less than 5 mph. .SUNDAY...Mostly clear. Lows 49 to 58. Highs 77 to 86. West winds 1 to 5 mph. .MONDAY...Mostly cloudy with a slight chance of showers. Lows 48 to 58. Highs 67 to 77. Northwest winds 1 to 5 mph. .TUESDAY...Partly cloudy. Lows 45 to 55. Highs 71 to 81. West winds 1 to 5 mph. $$ ORZ701-302315- Eastern Columbia River Gorge of Oregon- 636 AM PDT Wed Jul 30 2025 .TODAY... * Sky/weather.........Partly cloudy. * Max temperature.....92-97. * Min humidity........18-27 percent. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 1 to 5 mph...except northwest 1 to 6 mph in the eastern Columbia River Gorge. * Ridges/upr slopes....Northwest winds 1 to 5 mph in the morning becoming light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......11000 ft agl. * Transport winds.....Northwest 5 to 10 mph. * Ventilation Index...Poor (32-94) increasing to fair (303-495) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy. * Min temperature.....61-67. * Max humidity........57-72 percent. * Humidity recovery...Moderate. * 20-foot winds....... * Valleys/lwr slopes...West winds 4 to 9 mph...except west 4 to 10 mph in the eastern Columbia River Gorge. * Ridges/upr slopes....West winds 3 to 8 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....West around 15 mph. * Ventilation Index...Fair (222-364) decreasing to poor (43-123) after midnight. .THURSDAY... * Sky/weather.........Mostly cloudy. A chance of showers. A slight chance of thunderstorms in the afternoon. * Max temperature.....82-87...except 77-84 ridges. * Min humidity........34-49 percent. * 20-foot winds....... * Valleys/lwr slopes...West winds 4 to 10 mph...except west 5 to 11 mph in the eastern Columbia River Gorge. In the eastern Columbia River Gorge, gusts to 25 mph. * Ridges/upr slopes....West winds 3 to 8 mph. * CWR.................20 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......6000 ft agl. * Transport winds.....West around 15 mph. * Ventilation Index...Poor (49-181) increasing to fair (278-416) in the afternoon. .Forecast days 3 through 7...... .FRIDAY...A chance of showers. Mostly cloudy. Lows 57 to 63. Highs 80 to 86. West winds 5 to 11 mph. .SATURDAY...Mostly clear. Lows 53 to 59. Highs 81 to 86. West winds 4 to 10 mph. .SUNDAY...Partly cloudy. Lows 51 to 56. Highs 77 to 82. West winds 5 to 11 mph. .MONDAY...Partly cloudy. Lows 50 to 55. Highs 73 to 79. West winds 5 to 11 mph. .TUESDAY...Partly cloudy. Lows 50 to 56. Highs 76 to 81. West winds 4 to 10 mph. $$ ORZ702-302315- East Slopes of the Mt. Hood National Forest- 636 AM PDT Wed Jul 30 2025 .TODAY... * Sky/weather.........Partly cloudy. * Max temperature.....90-96...except 82-91 ridges. * Min humidity........18-29 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......10500 ft agl. * Transport winds.....Northeast 5 to 10 mph. * Ventilation Index...Poor (25-39) increasing to fair to good (288-536) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy. A slight chance of showers after midnight. * Min temperature.....55-65. * Max humidity........56-71 percent. * Humidity recovery...Moderate...except Good ridges. * 20-foot winds....... * Valleys/lwr slopes...Drainage winds less than 5 mph becoming west 1 to 5 mph after midnight. * Ridges/upr slopes....light winds less than 5 mph becoming west 1 to 6 mph after midnight. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....West around 10 mph. * Ventilation Index...Poor to fair (107-263) decreasing to poor (25-75) after midnight. .THURSDAY... * Sky/weather.........Mostly cloudy. A chance of showers. A slight chance of thunderstorms in the afternoon. * Max temperature.....78-86...except 71-81 ridges. * Min humidity........36-51 percent. * 20-foot winds....... * Valleys/lwr slopes...West winds 1 to 5 mph in the morning becoming upslope less than 5 mph. * Ridges/upr slopes....West winds 2 to 7 mph in the morning becoming light less than 5 mph. * CWR.................30 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......6000 ft agl. * Transport winds.....West 10 to 15 mph. * Ventilation Index...Poor (25-95) increasing to poor to fair (147-341) in the afternoon. .Forecast days 3 through 7...... .FRIDAY...A chance of showers. Mostly cloudy. Lows 51 to 60. Highs 70 to 84. West winds 2 to 7 mph. .SATURDAY...Mostly clear. Lows 49 to 56. Highs 69 to 84. West winds 2 to 7 mph. .SUNDAY...Partly cloudy. Lows 46 to 54. Highs 65 to 80. West winds 2 to 7 mph. .MONDAY...A slight chance of showers. Partly cloudy. Lows 44 to 52. Highs 62 to 77. West winds 2 to 7 mph. .TUESDAY...Partly cloudy. Lows 45 to 53. Highs 65 to 79. West winds 2 to 7 mph. $$ ORZ695-302315- Eagle Cap Wilderness- 636 AM PDT Wed Jul 30 2025 .TODAY... * Sky/weather.........Mostly sunny then becoming partly cloudy. * Max temperature.....83-94...except 72-83 ridges. * Min humidity........18-28 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming north 2 to 5 mph in the afternoon. * Ridges/upr slopes....North winds 2 to 6 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......14500 ft agl. * Transport winds.....Northeast around 10 mph. * Ventilation Index...Poor (52-138) increasing to good to excellent (528-752) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. * Min temperature.....60-65...except 54-60 ridges. * Max humidity........44-51 percent. * Humidity recovery...Moderate. * 20-foot winds....... * Valleys/lwr slopes...North winds 2 to 7 mph. * Ridges/upr slopes....North winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....North 10 to 15 mph. * Ventilation Index...Fair (259-433) decreasing to poor (25-84) after midnight. .THURSDAY... * Sky/weather.........Partly cloudy. A chance of showers and thunderstorms in the afternoon. * Max temperature.....80-90...except 69-80 ridges. * Min humidity........26-39 percent. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 1 to 6 mph. * Ridges/upr slopes....Northwest winds 1 to 6 mph. * CWR.................10 percent. * Chc of lightning....30 percent (chance). * Mixing height.......10000 ft agl. * Transport winds.....North 5 to 10 mph. * Ventilation Index...Poor (29-77) increasing to poor to fair (124-316) in the afternoon. .Forecast days 3 through 7...... .FRIDAY...A chance of showers and thunderstorms. Partly cloudy. Lows 49 to 59. Highs 64 to 79. Northwest winds 1 to 5 mph. .SATURDAY...A chance of showers and a slight chance of thunderstorms. Partly cloudy. Lows 46 to 56. Highs 66 to 81. Northwest winds 1 to 5 mph. .SUNDAY...Mostly clear with a slight chance of showers and thunderstorms. Lows 45 to 55. Highs 66 to 81. Northwest winds 1 to 6 mph. .MONDAY...Mostly cloudy with a chance of showers. Lows 44 to 53. Highs 58 to 73. Northwest winds 2 to 7 mph. .TUESDAY...Partly cloudy. Lows 41 to 50. Highs 61 to 76. West winds 1 to 6 mph. $$ ORZ694-302315- Grande Ronde Valley of Oregon- 636 AM PDT Wed Jul 30 2025 .TODAY... * Sky/weather.........Partly cloudy. * Max temperature.....93-98. * Min humidity........14-19 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming north 3 to 7 mph in the afternoon. * Ridges/upr slopes....North winds 3 to 8 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......13000 ft agl. * Transport winds.....North around 10 mph. * Ventilation Index...Poor (73-107) increasing to excellent (801-911) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. A slight chance of showers in the evening. * Min temperature.....60-65. * Max humidity........48-59 percent. * Humidity recovery...Moderate. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 2 to 7 mph. * Ridges/upr slopes....Northwest winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....North around 10 mph. * Ventilation Index...Fair (368-426) decreasing to poor (54-84) after midnight. .THURSDAY... * Sky/weather.........Partly cloudy. A chance of showers and thunderstorms in the afternoon. * Max temperature.....89-94. * Min humidity........24-29 percent. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 2 to 7 mph. * Ridges/upr slopes....Northwest winds 2 to 7 mph. * CWR.................10 percent. * Chc of lightning....30 percent (chance). * Mixing height.......7500 ft agl. * Transport winds.....Northwest around 10 mph. * Ventilation Index...Poor (72-114) increasing to fair (303-411) in the afternoon. .Forecast days 3 through 7...... .FRIDAY...Showers likely and a chance of thunderstorms. Mostly cloudy. Lows 57 to 62. Highs 80 to 85. Northwest winds 2 to 7 mph. .SATURDAY...A slight chance of showers and thunderstorms. Mostly clear. Lows 53 to 58. Highs 82 to 87. Northwest winds 2 to 7 mph. .SUNDAY...Mostly clear with a slight chance of showers and thunderstorms. Lows 50 to 55. Highs 81 to 86. Northwest winds 2 to 7 mph. .MONDAY...A chance of showers. Mostly cloudy. Lows 50 to 55. Highs 74 to 79. Northwest winds 2 to 7 mph. .TUESDAY...Partly cloudy. Lows 47 to 52. Highs 76 to 81. Northwest winds 2 to 7 mph. $$ ORZ699-302315- Western Forested Blue Mountains- 636 AM PDT Wed Jul 30 2025 .TODAY... * Sky/weather.........Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. * Max temperature.....85-91...except 78-85 ridges. * Min humidity........18-24 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming north 2 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph. * CWR.................0 percent. * Chc of lightning....10 percent (very low chance). * Mixing height.......12500 ft agl. * Transport winds.....Northeast around 10 mph. * Ventilation Index...Poor (45-107) increasing to good to excellent (532-746) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. A slight chance of showers. * Min temperature.....55-61. * Max humidity........50-58 percent. * Humidity recovery...Moderate. * 20-foot winds....... * Valleys/lwr slopes...North winds 1 to 5 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....North around 10 mph. * Ventilation Index...Fair (268-394) decreasing to poor (25-74) after midnight. .THURSDAY... * Sky/weather.........Partly cloudy. A slight chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. * Max temperature.....81-87...except 75-81 ridges. * Min humidity........29-37 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph. * CWR.................30 percent. * Chc of lightning....30 percent (chance). * Mixing height.......9000 ft agl. * Transport winds.....Northwest around 10 mph. * Ventilation Index...Poor (31-91) increasing to poor to fair (159-311) in the afternoon. .Forecast days 3 through 7...... .FRIDAY...Showers likely and a slight chance of thunderstorms. Mostly cloudy. Lows 51 to 57. Highs 70 to 80. Terrain driven winds less than 5 mph. .SATURDAY...A slight chance of showers and thunderstorms. Mostly clear. Lows 49 to 55. Highs 72 to 82. Terrain driven winds less than 5 mph. .SUNDAY...Partly cloudy with a slight chance of showers and thunderstorms. Lows 48 to 53. Highs 70 to 80. Terrain driven winds less than 5 mph. .MONDAY...A slight chance of showers. Mostly cloudy. Lows 45 to 51. Highs 65 to 74. West winds 1 to 5 mph. .TUESDAY...Partly cloudy. Lows 43 to 49. Highs 68 to 76. West winds 1 to 5 mph. $$ ORZ696-302315- John Day Valley- 636 AM PDT Wed Jul 30 2025 .TODAY... * Sky/weather.........Partly cloudy. A slight chance of showers in the morning. * Max temperature.....87-95...except 82-87 ridges. * Min humidity........15-20 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming north 2 to 6 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming north 2 to 6 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......14000 ft agl. * Transport winds.....Northeast 5 to 10 mph. * Ventilation Index...Poor (44-90) increasing to good to excellent (583-783) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy. A chance of showers and a slight chance of thunderstorms in the evening. A slight chance of showers after midnight. * Min temperature.....57-63. * Max humidity........51-60 percent. * Humidity recovery...Moderate. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 2 to 6 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....North winds 2 to 5 mph in the evening becoming light winds less than 5 mph. * CWR.................10 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......Near surface. * Transport winds.....Northwest around 10 mph. * Ventilation Index...Fair (259-391) decreasing to poor (35-87) after midnight. .THURSDAY... * Sky/weather.........Mostly cloudy then becoming partly cloudy. A slight chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. * Max temperature.....81-89...except 76-81 ridges. * Min humidity........27-34 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming northwest 3 to 6 mph in the afternoon. * CWR.................40 percent. * Chc of lightning....30 percent (chance). * Mixing height.......9000 ft agl. * Transport winds.....Northwest around 10 mph. * Ventilation Index...Poor (43-101) increasing to poor to fair (182-346) in the afternoon. .Forecast days 3 through 7...... .FRIDAY...A chance of showers and a slight chance of thunderstorms. Mostly cloudy. Lows 55 to 61. Highs 78 to 86. West winds 1 to 6 mph. .SATURDAY...A slight chance of showers. Mostly clear. Lows 53 to 58. Highs 78 to 87. Northwest winds 1 to 6 mph. .SUNDAY...Partly cloudy with a slight chance of showers and thunderstorms. Lows 50 to 56. Highs 75 to 84. Northwest winds 1 to 6 mph. .MONDAY...A slight chance of showers. Partly cloudy. Lows 48 to 54. Highs 71 to 80. West winds 1 to 6 mph. .TUESDAY...Partly cloudy. Lows 47 to 52. Highs 74 to 82. West winds 1 to 6 mph. $$ ORZ700-302315- Central Mountains of Oregon- 636 AM PDT Wed Jul 30 2025 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 11 AM PDT THURSDAY... .TODAY... * Sky/weather.........Partly cloudy. A slight chance of showers. A slight chance of thunderstorms in the afternoon. * Max temperature.....87-93...except 80-85 ridges. * Min humidity........17-22 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northeast 3 to 6 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming northeast 2 to 5 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......13000 ft agl. * Transport winds.....Northeast 5 to 10 mph. * Ventilation Index...Poor (31-79) increasing to good to excellent (620-756) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy. A chance of showers and a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. * Min temperature.....53-61. * Max humidity........58-70 percent. * Humidity recovery...Moderate. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 2 to 7 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....Northwest winds 1 to 5 mph in the evening becoming light winds less than 5 mph. * CWR.................30 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......Near surface. * Transport winds.....West 10 to 15 mph. * Ventilation Index...Fair (249-435) decreasing to poor (30-70) after midnight. .THURSDAY... * Sky/weather.........Mostly cloudy. A chance of showers in the morning, then showers likely and a chance of thunderstorms in the afternoon. * Max temperature.....80-86...except 74-79 ridges. * Min humidity........31-37 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 3 to 6 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming northwest 2 to 5 mph in the afternoon. * CWR.................40 percent. * Chc of lightning....40 percent (chance). * Mixing height.......8000 ft agl. * Transport winds.....Northwest around 10 mph. * Ventilation Index...Poor (43-95) increasing to fair (221-383) in the afternoon. .Forecast days 3 through 7...... .FRIDAY...A chance of showers and thunderstorms. Partly cloudy. Lows 49 to 57. Highs 78 to 85. West winds 2 to 7 mph. .SATURDAY...A slight chance of showers. Mostly clear. Lows 48 to 56. Highs 79 to 86. Northwest winds 2 to 7 mph. .SUNDAY...Partly cloudy with a slight chance of showers and thunderstorms. Lows 46 to 53. Highs 75 to 82. Northwest winds 2 to 7 mph. .MONDAY...A slight chance of showers. Partly cloudy. Lows 43 to 50. Highs 72 to 78. West winds 2 to 7 mph. .TUESDAY...Partly cloudy. Lows 42 to 50. Highs 74 to 81. West winds 2 to 7 mph. $$ ORZ703-302315- Warm Springs Reservation- 636 AM PDT Wed Jul 30 2025 .TODAY... * Sky/weather.........Partly cloudy. * Max temperature.....90-98...except 78-88 ridges. * Min humidity........16-21 percent...except 20-32 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northeast 2 to 7 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming east 2 to 6 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......12000 ft agl. * Transport winds.....Northeast 5 to 10 mph. * Ventilation Index...Poor (26-48) increasing to good (543-683) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy. A slight chance of thunderstorms in the evening. A slight chance of showers. * Min temperature.....62-67...except 56-61 ridges. * Max humidity........56-64 percent...except 60-75 percent ridges. * Humidity recovery...Moderate...except Good ridges. * 20-foot winds....... * Valleys/lwr slopes...West winds 2 to 7 mph. * Ridges/upr slopes....West winds 3 to 8 mph. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......Near surface. * Transport winds.....West around 10 mph. * Ventilation Index...Poor to fair (185-317) decreasing to poor (35-75) after midnight. .THURSDAY... * Sky/weather.........Mostly cloudy. A chance of showers. A slight chance of thunderstorms in the afternoon. * Max temperature.....80-89...except 68-78 ridges. * Min humidity........31-41 percent...except 44-59 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...West winds 2 to 7 mph. * Ridges/upr slopes....West winds 2 to 7 mph. * CWR.................10 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......7500 ft agl. * Transport winds.....West 10 to 15 mph. * Ventilation Index...Poor (59-125) increasing to fair (294-474) in the afternoon. .Forecast days 3 through 7...... .FRIDAY...A chance of showers. Partly cloudy. Lows 54 to 60. Highs 76 to 88. West winds 4 to 9 mph. .SATURDAY...Mostly clear. Lows 51 to 57. Highs 76 to 89. West winds 4 to 9 mph. .SUNDAY...Partly cloudy. Lows 49 to 55. Highs 72 to 85. West winds 4 to 9 mph. .MONDAY...Partly cloudy. Lows 47 to 53. Highs 68 to 81. West winds 4 to 9 mph. .TUESDAY...Partly cloudy. Lows 47 to 52. Highs 71 to 84. West winds 3 to 8 mph. $$ ORZ704-302315- Northern Deschutes National Forest- 636 AM PDT Wed Jul 30 2025 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 11 AM PDT THURSDAY... .TODAY... * Sky/weather.........Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. * Max temperature.....88-94...except 74-85 ridges. * Min humidity........19-24 percent...except 23-35 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......12000 ft agl. * Transport winds.....Northeast 5 to 10 mph. * Ventilation Index...Poor (35-67) increasing to good (502-646) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy. A chance of showers and a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. * Min temperature.....52-59. * Max humidity........64-79 percent. * Humidity recovery...Good. * 20-foot winds....... * Valleys/lwr slopes...West winds 2 to 7 mph. * Ridges/upr slopes....Southwest winds 2 to 7 mph. * CWR.................30 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......Near surface. * Transport winds.....West around 10 mph. * Ventilation Index...Poor to fair (141-285) decreasing to poor (31-83) after midnight. .THURSDAY... * Sky/weather.........Mostly cloudy. A chance of showers. A chance of thunderstorms in the afternoon. * Max temperature.....79-85...except 65-76 ridges. * Min humidity........34-43 percent...except 46-61 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...West winds 1 to 6 mph. * Ridges/upr slopes....West winds 1 to 6 mph. * CWR.................20 percent. * Chc of lightning....30 percent (chance). * Mixing height.......8000 ft agl. * Transport winds.....West 10 to 15 mph. * Ventilation Index...Poor (50-130) increasing to fair (206-350) in the afternoon. .Forecast days 3 through 7...... .FRIDAY...A chance of showers and a slight chance of thunderstorms. Partly cloudy. Lows 49 to 55. Highs 71 to 85. West winds 2 to 7 mph. .SATURDAY...Mostly clear. Lows 46 to 53. Highs 71 to 84. West winds 2 to 7 mph. .SUNDAY...Partly cloudy. Lows 45 to 50. Highs 67 to 81. West winds 3 to 8 mph. .MONDAY...Partly cloudy. Lows 42 to 48. Highs 64 to 77. West winds 2 to 7 mph. .TUESDAY...Partly cloudy. Lows 42 to 48. Highs 67 to 80. West winds 2 to 7 mph. $$ ORZ705-302315- Southern Deschutes National Forest- 636 AM PDT Wed Jul 30 2025 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 11 AM PDT THURSDAY... .TODAY... * Sky/weather.........Partly cloudy then becoming mostly cloudy. A chance of showers and thunderstorms in the afternoon. * Max temperature.....83-88...except 73-81 ridges. * Min humidity........21-30 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................20 percent. * Chc of lightning....30 percent (chance). * Mixing height.......11000 ft agl. * Transport winds.....Northeast around 5 mph. * Ventilation Index...Poor (43-87) increasing to poor to good (186-530) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy. A chance of showers and thunderstorms in the evening, then a slight chance of showers after midnight. * Min temperature.....48-54. * Max humidity........74-89 percent. * Humidity recovery...Excellent. * 20-foot winds....... * Valleys/lwr slopes...Drainage winds less than 5 mph. * Ridges/upr slopes....Northwest winds 1 to 5 mph. * CWR.................30 percent. * Chc of lightning....30 percent (chance). * Mixing height.......Near surface. * Transport winds.....Northwest around 10 mph. * Ventilation Index...Poor to fair (71-279) decreasing to poor (25-46) after midnight. .THURSDAY... * Sky/weather.........Mostly cloudy. A chance of showers in the morning, then showers likely and a chance of thunderstorms in the afternoon. * Max temperature.....74-80...except 65-73 ridges. * Min humidity........35-44 percent...except 44-59 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....Northwest winds 1 to 5 mph in the morning becoming light less than 5 mph. * CWR.................60 percent. * Chc of lightning....40 percent (chance). * Mixing height.......7000 ft agl. * Transport winds.....Northwest around 5 mph. * Ventilation Index...Poor (38-76) increasing to poor to fair (112-222) in the afternoon. .Forecast days 3 through 7...... .FRIDAY...A chance of showers and a slight chance of thunderstorms. Partly cloudy. Lows 44 to 50. Highs 72 to 81. Terrain driven winds less than 5 mph. .SATURDAY...A slight chance of showers. Partly cloudy. Lows 43 to 49. Highs 71 to 82. Terrain driven winds less than 5 mph. .SUNDAY...Partly cloudy with a slight chance of showers and thunderstorms. Lows 42 to 48. Highs 68 to 78. Northwest winds 1 to 5 mph. .MONDAY...A slight chance of showers. Partly cloudy. Lows 38 to 44. Highs 65 to 75. West winds 1 to 6 mph. .TUESDAY...Partly cloudy. Lows 38 to 44. Highs 69 to 79. West winds 1 to 6 mph. $$ ORZ697-302315- Central Blue Mountains- 636 AM PDT Wed Jul 30 2025 .TODAY... * Sky/weather.........Mostly cloudy then becoming partly cloudy. * Max temperature.....83-88...except 78-85 ridges. * Min humidity........20-25 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......12500 ft agl. * Transport winds.....Northeast around 10 mph. * Ventilation Index...Poor (44-110) increasing to fair to good (486-672) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy. A chance of showers and a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. * Min temperature.....52-58. * Max humidity........53-68 percent. * Humidity recovery...Moderate. * 20-foot winds....... * Valleys/lwr slopes...Drainage winds less than 5 mph. * Ridges/upr slopes....Northwest winds 1 to 5 mph. * CWR.................10 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......Near surface. * Transport winds.....Northwest around 10 mph. * Ventilation Index...Fair (273-411) decreasing to poor (26-78) after midnight. .THURSDAY... * Sky/weather.........Mostly cloudy then becoming partly cloudy. A slight chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. * Max temperature.....79-84...except 74-81 ridges. * Min humidity........31-38 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2 to 5 mph in the afternoon. * Ridges/upr slopes....Northwest winds 1 to 5 mph. * CWR.................40 percent. * Chc of lightning....30 percent (chance). * Mixing height.......9000 ft agl. * Transport winds.....North around 10 mph shifting to the east in the afternoon. * Ventilation Index...Poor (30-92) increasing to poor to fair (98-254) in the afternoon. .Forecast days 3 through 7...... .FRIDAY...Showers likely and a chance of thunderstorms. Partly cloudy. Lows 48 to 54. Highs 71 to 78. West winds 1 to 5 mph. .SATURDAY...A slight chance of showers and thunderstorms. Mostly clear. Lows 46 to 52. Highs 72 to 79. Terrain driven winds less than 5 mph. .SUNDAY...Partly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 45 to 52. Highs 71 to 77. Terrain driven winds less than 5 mph. .MONDAY...A chance of showers. Partly cloudy. Lows 43 to 49. Highs 65 to 72. Northwest winds 1 to 5 mph. .TUESDAY...Partly cloudy. Lows 41 to 47. Highs 69 to 76. West winds 1 to 5 mph. $$ ORZ698-302315- Southern Blue Mountains- 636 AM PDT Wed Jul 30 2025 .TODAY... * Sky/weather.........Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. * Max temperature.....84-90. * Min humidity........17-23 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming north 2 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph. * CWR.................0 percent. * Chc of lightning....10 percent (very low chance). * Mixing height.......12500 ft agl. * Transport winds.....Northeast 5 to 10 mph. * Ventilation Index...Poor (62-112) increasing to good (596-684) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy. A slight chance of thunderstorms in the evening. A chance of showers. * Min temperature.....54-59. * Max humidity........54-68 percent. * Humidity recovery...Moderate. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 2 to 5 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....light winds less than 5 mph becoming northwest 2 to 5 mph after midnight. * CWR.................20 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......Near surface. * Transport winds.....Northwest around 15 mph. * Ventilation Index...Fair (280-412) decreasing to poor (32-100) after midnight. .THURSDAY... * Sky/weather.........Mostly cloudy then becoming partly cloudy. A slight chance of showers in the morning, then showers likely and a chance of thunderstorms in the afternoon. * Max temperature.....79-85. * Min humidity........27-35 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 3 to 6 mph in the afternoon. * Ridges/upr slopes....Northwest winds 2 to 5 mph. * CWR.................30 percent. * Chc of lightning....30 percent (chance). * Mixing height.......9500 ft agl. * Transport winds.....Northwest around 10 mph. * Ventilation Index...Poor (43-99) increasing to poor to fair (145-407) in the afternoon. .Forecast days 3 through 7...... .FRIDAY...Showers likely and a chance of thunderstorms. Partly cloudy. Lows 49 to 55. Highs 76 to 82. Northwest winds 2 to 7 mph. .SATURDAY...A slight chance of showers. Mostly clear. Lows 48 to 53. Highs 76 to 83. Northwest winds 1 to 6 mph. .SUNDAY...Partly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 47 to 53. Highs 75 to 82. Northwest winds 1 to 5 mph. .MONDAY...A chance of showers. Partly cloudy. Lows 44 to 50. Highs 70 to 76. Northwest winds 2 to 7 mph. .TUESDAY...Partly cloudy. Lows 42 to 48. Highs 73 to 79. West winds 2 to 7 mph. $$ .8-14 DAY OUTLOOK for Wednesday August 6 through Tuesday August 12... A greater chance of above-normal temperatures and above-normal precipitation. $$