552 FNUS56 KPDT 021143 FWFPDT Fire Weather Planning Forecast for NE Oregon and SE Washington National Weather Service Pendleton OR 443 AM PDT Tue Sep 2 2025 .DISCUSSION...Unseasonably hot temperatures are expected in the mid 90s for many lower elevation locations to around 100 degrees in the Columbia Basin. Slight (15-25%) chances for thunderstorms in the afternoon and evening today and tomorrow, mainly in central Oregon. Cooler and wetter conditions expected by 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. WAZ695-022315- East Washington South Central Cascade Mountains- 443 AM PDT Tue Sep 2 2025 .TODAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. Hazy. * Max temperature.....88-96...except 79-87 ridges. * Min humidity........18-25 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming southeast 2 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming southeast 2 to 5 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......10500 ft agl. * Transport winds.....Southeast 5 to 10 mph. * Ventilation Index...Poor (25-56) increasing to fair to good (427-677) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. Hazy. Areas of smoke after midnight. * Min temperature.....62-69. * Max humidity........34-49 percent. * Humidity recovery...Poor. * 20-foot winds....... * Valleys/lwr slopes...Drainage winds less than 5 mph becoming northwest 1 to 5 mph after midnight. * Ridges/upr slopes....light winds less than 5 mph becoming northwest 1 to 5 mph after midnight. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....Northwest 5 to 10 mph. * Ventilation Index...Poor (43-113) decreasing to poor (25-72) after midnight. .WEDNESDAY... * Sky/weather.........Mostly sunny. Areas of smoke in the morning. Hazy. * Max temperature.....90-98...except 81-89 ridges. * Min humidity........16-23 percent. * 20-foot winds....... * Valleys/lwr slopes...North winds 1 to 5 mph. * Ridges/upr slopes....Northeast winds 1 to 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......11500 ft agl. * Transport winds.....Northeast around 5 mph. * Ventilation Index...Poor (25-74) increasing to fair (256-454) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy. Lows 62 to 68. Highs 81 to 94. West winds 2 to 7 mph. .FRIDAY...Partly cloudy. Lows 59 to 66. Highs 77 to 90. West winds 1 to 5 mph. .SATURDAY...Mostly cloudy with a slight chance of showers. Lows 57 to 63. Highs 69 to 82. West winds 1 to 6 mph. .SUNDAY...Mostly cloudy with a slight chance of showers. Lows 53 to 59. Highs 64 to 78. Northwest winds 2 to 7 mph. .MONDAY...Mostly cloudy with a chance of showers. Lows 51 to 57. Highs 62 to 75. West winds 2 to 7 mph. $$ WAZ690-022315- Kittitas Valley- 443 AM PDT Tue Sep 2 2025 .TODAY... * Sky/weather.........Mostly sunny. Hazy. Patchy smoke in the afternoon. * Max temperature.....93-99...except 84-95 ridges. * Min humidity........16-21 percent. * 20-foot winds....... * Valleys/lwr slopes...North winds 1 to 5 mph shifting to the southeast 2 to 5 mph in the afternoon. * Ridges/upr slopes....North winds 2 to 5 mph in the morning becoming light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......9000 ft agl. * Transport winds.....North around 5 mph shifting to the southeast in the afternoon. * Ventilation Index...Poor (25-61) increasing to fair (232-412) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. Hazy. * Min temperature.....64-72. * Max humidity........34-49 percent...except 29-37 percent ridges. * Humidity recovery...Poor. * 20-foot winds....... * Valleys/lwr slopes...Drainage winds less than 5 mph becoming northwest 1 to 6 mph after midnight. * Ridges/upr slopes....light winds less than 5 mph becoming northwest 2 to 6 mph after midnight. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Poor (53-87) decreasing to poor (28-88) after midnight. .WEDNESDAY... * Sky/weather.........Mostly sunny. Hazy. Areas of smoke in the afternoon. * Max temperature.....96-101...except 87-97 ridges. * Min humidity........14-19 percent. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 1 to 6 mph in the morning becoming upslope less than 5 mph. * Ridges/upr slopes....Northwest winds 2 to 6 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.....North 5 to 10 mph. * Ventilation Index...Poor (26-82) increasing to fair (241-351) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy. Lows 66 to 72. Highs 93 to 99. North winds 2 to 7 mph. .FRIDAY...Partly cloudy. Lows 65 to 71. Highs 89 to 95. North winds 2 to 7 mph. .SATURDAY...Mostly cloudy with a slight chance of showers. Lows 63 to 70. Highs 81 to 88. Northwest winds 2 to 7 mph. .SUNDAY...Mostly cloudy with a slight chance of showers. Lows 59 to 66. Highs 78 to 85. Northwest winds 3 to 8 mph. .MONDAY...Mostly cloudy with a chance of showers. Lows 57 to 63. Highs 75 to 82. Northwest winds 3 to 8 mph. $$ WAZ694-022315- Yakama Alpine District- 443 AM PDT Tue Sep 2 2025 .TODAY... * Sky/weather.........Mostly sunny. Hazy. * Max temperature.....91-97...except 81-92 ridges. * Min humidity........16-22 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.......8500 ft agl. * Transport winds.....Southeast around 5 mph. * Ventilation Index...Poor (25-48) increasing to fair (208-432) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. Hazy. Patchy smoke after midnight. * Min temperature.....62-70. * Max humidity........34-49 percent. * Humidity recovery...Poor. * 20-foot winds....... * Valleys/lwr slopes...Drainage winds less than 5 mph becoming northwest 1 to 5 mph after midnight. * Ridges/upr slopes....light winds less than 5 mph becoming north 2 to 6 mph after midnight. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....Northwest around 5 mph. * Ventilation Index...Poor (48-100) decreasing to poor (25-60) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy. Hazy. * Max temperature.....92-98...except 83-93 ridges. * Min humidity........15-23 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming east 1 to 6 mph in the afternoon. * Ridges/upr slopes....North winds 2 to 5 mph shifting to the east 1 to 5 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......10000 ft agl. * Transport winds.....East around 5 mph. * Ventilation Index...Poor (25-53) increasing to poor to fair (190-402) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy. Lows 60 to 69. Highs 85 to 97. West winds 1 to 6 mph. .FRIDAY...Partly cloudy. Lows 59 to 67. Highs 80 to 92. West winds 1 to 5 mph. .SATURDAY...Mostly cloudy with a slight chance of showers. Lows 57 to 64. Highs 73 to 85. West winds 1 to 5 mph. .SUNDAY...Mostly cloudy with a slight chance of showers. Lows 52 to 59. Highs 70 to 82. West winds 1 to 5 mph. .MONDAY...Mostly cloudy with a chance of showers. Lows 51 to 58. Highs 67 to 79. West winds 1 to 6 mph. $$ ORZ691-WAZ691-022315- Lower Columbia Basin of Oregon-Lower Columbia Basin of Washington- 443 AM PDT Tue Sep 2 2025 .TODAY... * Sky/weather.........Mostly sunny. Hazy. * Max temperature.....95-100. * Min humidity........16-22 percent. * 20-foot winds....... * Valleys/lwr slopes...Southwest winds 1 to 5 mph in the morning becoming upslope less than 5 mph. * Ridges/upr slopes....Southwest winds 2 to 5 mph in the morning becoming light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......9500 ft agl. * Transport winds.....Southwest around 5 mph. * Ventilation Index...Poor (25-53) increasing to poor to fair (110-234) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. Hazy after midnight. * Min temperature.....64-69. * Max humidity........39-54 percent. * Humidity recovery...Moderate...except Poor ridges. * 20-foot winds....... * Valleys/lwr slopes...Northeast winds 1 to 5 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....North winds 2 to 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....North around 5 mph. * Ventilation Index...Poor (25-129) decreasing to poor (25-44) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. Hazy. * Max temperature.....96-102. * Min humidity........16-21 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 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.......9000 ft agl. * Transport winds.....Northwest around 5 mph. * Ventilation Index...Poor (25-38) increasing to poor to fair (96-212) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy. Lows 65 to 70. Highs 95 to 100. West winds 2 to 6 mph. .FRIDAY...Partly cloudy. Lows 65 to 70. Highs 90 to 95. West winds 2 to 7 mph. .SATURDAY...Mostly cloudy with a slight chance of showers. Lows 63 to 68. Highs 83 to 88. Southwest winds 2 to 7 mph. .SUNDAY...Mostly cloudy with a slight chance of showers. Lows 59 to 64. Highs 81 to 87. Southwest winds 2 to 7 mph. .MONDAY...Mostly cloudy with a chance of showers. Lows 58 to 63. Highs 78 to 84. Southwest winds 3 to 8 mph. $$ ORZ692-WAZ692-022315- Northern Blue Mountains of Oregon-Blue Mountains of Washington- 443 AM PDT Tue Sep 2 2025 .TODAY... * Sky/weather.........Mostly sunny. Hazy. * Max temperature.....90-98...except 84-90 ridges. * Min humidity........16-21 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.......14000 ft agl. * Transport winds.....Southwest around 5 mph. * Ventilation Index...Poor (25-43) increasing to poor to fair (118-446) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. * Min temperature.....62-71. * Max humidity........30-45 percent. * Humidity recovery...Poor. * 20-foot winds....... * Valleys/lwr slopes...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.....Northeast around 5 mph. * Ventilation Index...Poor (37-147) decreasing to poor (25-50) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy then becoming mostly sunny. Hazy. * Max temperature.....90-98...except 84-90 ridges. * Min humidity........15-20 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.......13500 ft agl. * Transport winds.....Northeast around 5 mph. * Ventilation Index...Poor (25-40) increasing to poor to fair (144-320) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Mostly clear. Lows 62 to 70. Highs 85 to 96. Southwest winds 1 to 6 mph. .FRIDAY...Partly cloudy. Lows 60 to 68. Highs 82 to 92. South winds 1 to 5 mph. .SATURDAY...Mostly cloudy with a chance of showers. Lows 58 to 66. Highs 73 to 83. Terrain driven winds less than 5 mph. .SUNDAY...Mostly cloudy with a chance of showers. Lows 54 to 62. Highs 70 to 82. Terrain driven winds less than 5 mph. .MONDAY...Mostly cloudy with a chance of showers. Lows 52 to 60. Highs 69 to 79. Terrain driven winds less than 5 mph. $$ ORZ693-WAZ693-022315- Canyon Grasslands of Wallowa County- Southeast Washington Grande Ronde Valley- 443 AM PDT Tue Sep 2 2025 .TODAY... * Sky/weather.........Mostly sunny then becoming partly cloudy. Hazy in the morning. * Max temperature.....92-101...except 86-92 ridges. * Min humidity........12-17 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....South winds 2 to 5 mph in the morning becoming light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......16500 ft agl. * Transport winds.....South around 5 mph. * Ventilation Index...Poor (25-80) increasing to fair to good (327-699) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear. * Min temperature.....59-69. * Max humidity........33-48 percent...except 31-36 percent ridges. * Humidity recovery...Poor. * 20-foot winds....... * Valleys/lwr slopes...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.....Northeast around 5 mph. * Ventilation Index...Poor to fair (134-224) decreasing to poor (25-54) after midnight. .WEDNESDAY... * Sky/weather.........Mostly sunny. Hazy. * Max temperature.....91-100...except 85-92 ridges. * Min humidity........12-17 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.......13500 ft agl. * Transport winds.....Southeast around 5 mph shifting to the north in the afternoon. * Ventilation Index...Poor (25-50) increasing to fair (239-333) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Mostly clear. Lows 59 to 68. Highs 88 to 97. South winds 1 to 6 mph. .FRIDAY...Partly cloudy. Lows 58 to 66. Highs 85 to 94. East winds 1 to 6 mph. .SATURDAY...Mostly cloudy with a chance of showers. Lows 56 to 66. Highs 75 to 85. Southwest winds 1 to 5 mph. .SUNDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 51 to 61. Highs 72 to 81. Terrain driven winds less than 5 mph. .MONDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 49 to 59. Highs 71 to 81. Terrain driven winds less than 5 mph. $$ ORZ701-022315- Eastern Columbia River Gorge of Oregon- 443 AM PDT Tue Sep 2 2025 .TODAY... * Sky/weather.........Mostly sunny. Hazy. * Max temperature.....93-98. * Min humidity........17-26 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.......7500 ft agl. * Transport winds.....South around 5 mph. * Ventilation Index...Poor (25-51) increasing to poor to fair (142-320) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. Hazy in the evening. * Min temperature.....64-70. * Max humidity........44-59 percent. * Humidity recovery...Moderate...except Poor ridges. * 20-foot winds....... * Valleys/lwr slopes...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.....Northwest around 5 mph. * Ventilation Index...Poor (54-144) decreasing to poor (28-68) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy. Hazy. * Max temperature.....93-98. * Min humidity........20-32 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.......7000 ft agl. * Transport winds.....West around 5 mph shifting to the northeast in the afternoon. * Ventilation Index...Poor (25-47) increasing to poor to fair (98-244) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy. Lows 62 to 67. Highs 93 to 98. West winds 1 to 6 mph. .FRIDAY...Partly cloudy. Lows 63 to 68. Highs 87 to 92. West winds 1 to 6 mph. .SATURDAY...Mostly cloudy with a slight chance of showers. Lows 60 to 65. Highs 80 to 86. West winds 2 to 7 mph. .SUNDAY...Mostly cloudy with a slight chance of showers. Lows 56 to 62. Highs 79 to 84. West winds 2 to 7 mph. .MONDAY...Mostly cloudy with a chance of showers. Lows 55 to 60. Highs 77 to 82. West winds 3 to 8 mph. $$ ORZ702-022315- East Slopes of the Mt. Hood National Forest- 443 AM PDT Tue Sep 2 2025 .TODAY... * Sky/weather.........Mostly sunny. Hazy. * Max temperature.....91-97...except 85-92 ridges. * Min humidity........18-25 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.......9000 ft agl. * Transport winds.....South 5 to 10 mph. * Ventilation Index...Poor (25-50) increasing to fair (309-493) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy then becoming mostly cloudy. * Min temperature.....63-71. * Max humidity........34-45 percent. * Humidity recovery...Poor. * 20-foot winds....... * Valleys/lwr slopes...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 5 mph. * Ventilation Index...Poor (50-152) decreasing to poor (25-48) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy. * Max temperature.....90-97...except 83-92 ridges. * Min humidity........21-28 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.......8000 ft agl. * Transport winds.....East 5 to 10 mph. * Ventilation Index...Poor (25-34) increasing to fair (212-346) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy. Lows 59 to 67. Highs 84 to 97. Terrain driven winds less than 5 mph. .FRIDAY...Partly cloudy. Lows 58 to 66. Highs 77 to 91. Terrain driven winds less than 5 mph. .SATURDAY...Mostly cloudy with a slight chance of showers. Lows 55 to 63. Highs 71 to 85. Terrain driven winds less than 5 mph. .SUNDAY...Mostly cloudy with a slight chance of showers. Lows 51 to 59. Highs 69 to 82. Terrain driven winds less than 5 mph. .MONDAY...Mostly cloudy with a chance of showers. Lows 52 to 59. Highs 66 to 79. Terrain driven winds less than 5 mph. $$ ORZ695-022315- Eagle Cap Wilderness- 443 AM PDT Tue Sep 2 2025 .TODAY... * Sky/weather.........Mostly sunny then becoming partly cloudy. * Max temperature.....87-97...except 75-86 ridges. * Min humidity........15-21 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....South winds 1 to 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......15000 ft agl. * Transport winds.....South 5 to 10 mph. * Ventilation Index...Poor (25-121) increasing to fair to excellent (486-776) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. * Min temperature.....62-69...except 57-65 ridges. * Max humidity........30-39 percent. * Humidity recovery...Poor. * 20-foot winds....... * Valleys/lwr slopes...Drainage winds less than 5 mph becoming northeast 1 to 5 mph after midnight. * Ridges/upr slopes....Northeast winds 2 to 6 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....Northeast 5 to 10 mph. * Ventilation Index...Poor (91-171) decreasing to poor (25-75) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy. Hazy. * Max temperature.....86-96...except 75-86 ridges. * Min humidity........16-23 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....Northeast winds 2 to 5 mph in the morning becoming light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......12500 ft agl. * Transport winds.....Northeast around 5 mph shifting to the south in the afternoon. * Ventilation Index...Poor (25-56) increasing to poor to fair (140-306) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy. Lows 57 to 66. Highs 77 to 92. Northwest winds 1 to 5 mph. .FRIDAY...Partly cloudy. Lows 55 to 64. Highs 73 to 88. Northwest winds 1 to 5 mph. .SATURDAY...Mostly cloudy with a chance of showers. Lows 52 to 61. Highs 64 to 79. Terrain driven winds less than 5 mph. .SUNDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 48 to 58. Highs 62 to 77. Terrain driven winds less than 5 mph. .MONDAY...Mostly cloudy with a chance of showers. Lows 47 to 57. Highs 61 to 76. Terrain driven winds less than 5 mph. $$ ORZ694-022315- Grande Ronde Valley of Oregon- 443 AM PDT Tue Sep 2 2025 .TODAY... * Sky/weather.........Mostly sunny. Hazy in the morning. * Max temperature.....96-101. * Min humidity........12-17 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.......13000 ft agl. * Transport winds.....South 5 to 10 mph. * Ventilation Index...Poor (32-64) increasing to good (511-691) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. * Min temperature.....57-62. * Max humidity........43-56 percent. * Humidity recovery...Moderate. * 20-foot winds....... * Valleys/lwr slopes...Drainage winds less than 5 mph. * Ridges/upr slopes....Northwest 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.....North 5 to 10 mph. * Ventilation Index...Poor to fair (182-226) decreasing to poor (36-68) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy. * Max temperature.....95-100. * Min humidity........13-18 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.......11000 ft agl. * Transport winds.....North around 5 mph shifting to the south in the afternoon. * Ventilation Index...Poor (29-47) increasing to poor to fair (80-252) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy. Lows 58 to 63. Highs 92 to 97. Terrain driven winds less than 5 mph. .FRIDAY...Partly cloudy. Lows 58 to 63. Highs 88 to 93. Terrain driven winds less than 5 mph. .SATURDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 57 to 62. Highs 80 to 85. Terrain driven winds less than 5 mph. .SUNDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 53 to 58. Highs 79 to 84. Terrain driven winds less than 5 mph. .MONDAY...Mostly cloudy with a chance of showers. Lows 51 to 56. Highs 76 to 81. Terrain driven winds less than 5 mph. $$ ORZ699-022315- Western Forested Blue Mountains- 443 AM PDT Tue Sep 2 2025 .TODAY... * Sky/weather.........Mostly sunny. * Max temperature.....90-96...except 83-90 ridges. * Min humidity........13-18 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.......13500 ft agl. * Transport winds.....South around 5 mph. * Ventilation Index...Poor (25-63) increasing to fair to good (377-625) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. * Min temperature.....59-66. * Max humidity........34-43 percent. * Humidity recovery...Poor. * 20-foot winds....... * Valleys/lwr slopes...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.....Northeast around 10 mph. * Ventilation Index...Poor to fair (114-234) decreasing to poor (25-60) after midnight. .WEDNESDAY... * Sky/weather.........Partly cloudy. * Max temperature.....88-94...except 82-88 ridges. * Min humidity........17-22 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.......12000 ft agl. * Transport winds.....East around 5 mph shifting to the southwest in the afternoon. * Ventilation Index...Poor (25-37) increasing to fair (200-362) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy. Lows 58 to 65. Highs 83 to 92. Terrain driven winds less than 5 mph. .FRIDAY...A slight chance of showers and thunderstorms. Partly cloudy. Lows 57 to 63. Highs 79 to 87. Terrain driven winds less than 5 mph. .SATURDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 55 to 61. Highs 71 to 80. Terrain driven winds less than 5 mph. .SUNDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 51 to 57. Highs 69 to 78. Terrain driven winds less than 5 mph. .MONDAY...Mostly cloudy with a chance of showers. Lows 49 to 56. Highs 66 to 75. Terrain driven winds less than 5 mph. $$ ORZ696-022315- John Day Valley- 443 AM PDT Tue Sep 2 2025 .TODAY... * Sky/weather.........Mostly sunny. Hazy. * Max temperature.....91-99...except 87-92 ridges. * Min humidity........9-14 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.......14500 ft agl. * Transport winds.....South 5 to 10 mph. * Ventilation Index...Poor (25-58) increasing to fair to excellent (478-710) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy then becoming mostly cloudy. Hazy in the evening. * Min temperature.....61-67. * Max humidity........34-43 percent. * Humidity recovery...Poor. * 20-foot winds....... * Valleys/lwr slopes...Drainage winds less than 5 mph. * Ridges/upr slopes....Northeast 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.....Northeast 5 to 10 mph. * Ventilation Index...Fair (207-309) decreasing to poor (25-63) after midnight. .WEDNESDAY... * Sky/weather.........Mostly cloudy then becoming partly cloudy. * Max temperature.....89-97...except 84-89 ridges. * Min humidity........15-20 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.......11500 ft agl. * Transport winds.....Southwest around 5 mph. * Ventilation Index...Poor (25-56) increasing to fair (202-362) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy. Lows 60 to 66. Highs 88 to 97. Terrain driven winds less than 5 mph. .FRIDAY...Mostly cloudy with a slight chance of showers. Lows 60 to 66. Highs 83 to 92. Terrain driven winds less than 5 mph. .SATURDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 57 to 63. Highs 77 to 86. Terrain driven winds less than 5 mph. .SUNDAY...A chance of showers and a slight chance of thunderstorms. Mostly cloudy. Lows 53 to 59. Highs 75 to 84. Terrain driven winds less than 5 mph. .MONDAY...Mostly cloudy with a chance of showers. Lows 52 to 58. Highs 72 to 80. Terrain driven winds less than 5 mph. $$ ORZ700-022315- Central Mountains of Oregon- 443 AM PDT Tue Sep 2 2025 .TODAY... * Sky/weather.........Mostly sunny. Hazy. * Max temperature.....91-97...except 85-90 ridges. * Min humidity........10-15 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.......13000 ft agl. * Transport winds.....South 5 to 10 mph. * Ventilation Index...Poor (25-52) increasing to fair to excellent (486-914) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy. A slight chance of showers and thunderstorms. * Min temperature.....57-65. * Max humidity........38-50 percent. * Humidity recovery...Poor. * 20-foot winds....... * Valleys/lwr slopes...Drainage winds less than 5 mph. * Ridges/upr slopes....light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......Near surface. * Transport winds.....Northeast around 10 mph shifting to the northwest after midnight. * Ventilation Index...Poor to fair (142-294) decreasing to poor (25-52) after midnight. .WEDNESDAY... * Sky/weather.........Mostly cloudy then becoming partly cloudy. * Max temperature.....88-93...except 82-87 ridges. * Min humidity........17-22 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.......11500 ft agl. * Transport winds.....Southwest 5 to 10 mph. * Ventilation Index...Poor (25-56) increasing to fair to good (282-560) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy. Lows 53 to 63. Highs 87 to 94. Terrain driven winds less than 5 mph. .FRIDAY...Mostly cloudy with a slight chance of showers and thunderstorms. Lows 54 to 63. Highs 83 to 89. Terrain driven winds less than 5 mph. .SATURDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 50 to 60. Highs 77 to 84. West winds 1 to 5 mph. .SUNDAY...A slight chance of showers and thunderstorms. Mostly cloudy. Lows 47 to 56. Highs 75 to 81. West winds 1 to 6 mph. .MONDAY...Mostly cloudy with a chance of showers. Lows 46 to 56. Highs 72 to 78. Southwest winds 1 to 6 mph. $$ ORZ703-022315- Warm Springs Reservation- 443 AM PDT Tue Sep 2 2025 .TODAY... * Sky/weather.........Mostly sunny. Hazy. * Max temperature.....93-99...except 83-91 ridges. * Min humidity........15-20 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.......11000 ft agl. * Transport winds.....South 5 to 10 mph. * Ventilation Index...Poor (25-54) increasing to fair to good (351-631) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy then becoming mostly cloudy. * Min temperature.....64-69. * Max humidity........37-45 percent. * Humidity recovery...Poor. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 1 to 5 mph. * Ridges/upr slopes....light winds less than 5 mph becoming northwest 1 to 5 mph after midnight. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....North 5 to 10 mph. * Ventilation Index...Poor to fair (147-235) decreasing to poor (25-53) after midnight. .WEDNESDAY... * Sky/weather.........Mostly cloudy then becoming partly cloudy. * Max temperature.....91-97...except 80-89 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.......10000 ft agl. * Transport winds.....Southwest around 5 mph shifting to the southeast in the afternoon. * Ventilation Index...Poor (25-36) increasing to poor to fair (194-364) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy. Lows 61 to 66. Highs 89 to 97. West winds 1 to 6 mph. .FRIDAY...Mostly cloudy with a slight chance of showers. Lows 61 to 66. Highs 82 to 92. West winds 1 to 6 mph. .SATURDAY...Mostly cloudy with a slight chance of showers. Lows 58 to 63. Highs 77 to 87. West winds 1 to 6 mph. .SUNDAY...Mostly cloudy with a slight chance of showers. Lows 54 to 59. Highs 74 to 85. West winds 2 to 7 mph. .MONDAY...Mostly cloudy with a chance of showers. Lows 54 to 59. Highs 71 to 81. West winds 2 to 7 mph. $$ ORZ704-022315- Northern Deschutes National Forest- 443 AM PDT Tue Sep 2 2025 .TODAY... * Sky/weather.........Mostly sunny. Hazy. * Max temperature.....92-98...except 80-89 ridges. * Min humidity........16-23 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....South winds 1 to 6 mph in the morning becoming light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......12500 ft agl. * Transport winds.....South 5 to 10 mph. * Ventilation Index...Poor (25-60) increasing to good to excellent (643-965) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy. A slight chance of showers and thunderstorms. * Min temperature.....58-65. * Max humidity........40-49 percent. * Humidity recovery...Moderate...except Poor ridges. * 20-foot winds....... * Valleys/lwr slopes...Drainage winds less than 5 mph. * Ridges/upr slopes....Northwest winds 1 to 6 mph. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......Near surface. * Transport winds.....North 5 to 10 mph. * Ventilation Index...Poor to fair (137-249) decreasing to poor (25-64) after midnight. .WEDNESDAY... * Sky/weather.........Mostly cloudy then becoming partly cloudy. * Max temperature.....88-94...except 76-85 ridges. * Min humidity........22-33 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....Southwest winds 1 to 5 mph in the morning becoming light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......11500 ft agl. * Transport winds.....Southwest 5 to 10 mph. * Ventilation Index...Poor (25-53) increasing to fair to good (331-669) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy with a slight chance of showers and thunderstorms. Lows 54 to 62. Highs 81 to 94. West winds 1 to 5 mph. .FRIDAY...Mostly cloudy with a slight chance of showers and thunderstorms. Lows 54 to 61. Highs 76 to 90. Terrain driven winds less than 5 mph. .SATURDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 51 to 58. Highs 70 to 84. West winds 1 to 5 mph. .SUNDAY...Mostly cloudy with a slight chance of showers. Lows 48 to 54. Highs 67 to 81. West winds 1 to 5 mph. .MONDAY...Mostly cloudy with a chance of showers. Lows 47 to 54. Highs 64 to 77. West winds 1 to 6 mph. $$ ORZ705-022315- Southern Deschutes National Forest- 443 AM PDT Tue Sep 2 2025 .TODAY... * Sky/weather.........Mostly sunny then becoming partly cloudy. Hazy. * Max temperature.....88-93...except 79-87 ridges. * Min humidity........14-21 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....South winds 1 to 5 mph in the morning becoming light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......13000 ft agl. * Transport winds.....South around 5 mph increasing to around 15 mph in the afternoon. * Ventilation Index...Poor (28-62) increasing to excellent (978-1050) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy. Hazy in the evening. A slight chance of showers and thunderstorms. * Min temperature.....51-59. * Max humidity........54-69 percent...except 45-57 percent ridges. * Humidity recovery...Moderate. * 20-foot winds....... * Valleys/lwr slopes...Drainage winds less than 5 mph. * Ridges/upr slopes....light winds less than 5 mph becoming north 2 to 7 mph after midnight. * CWR.................10 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......Near surface. * Transport winds.....Southwest around 10 mph. * Ventilation Index...Poor to fair (87-215) decreasing to poor (25-50) after midnight. .WEDNESDAY... * Sky/weather.........Mostly cloudy then becoming partly cloudy. A slight chance of showers and thunderstorms. * Max temperature.....84-89...except 75-83 ridges. * Min humidity........20-30 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....South winds 2 to 6 mph in the morning becoming light less than 5 mph. * CWR.................0 percent. * Chc of lightning....10 percent (very low chance). * Mixing height.......11500 ft agl. * Transport winds.....Southeast 5 to 10 mph. * Ventilation Index...Poor (25-50) increasing to good to excellent (586-764) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy. Lows 49 to 57. Highs 81 to 89. Terrain driven winds less than 5 mph. .FRIDAY...A slight chance of showers and thunderstorms. Mostly cloudy. Lows 48 to 56. Highs 77 to 85. Terrain driven winds less than 5 mph. .SATURDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 45 to 53. Highs 72 to 80. Terrain driven winds less than 5 mph. .SUNDAY...A slight chance of showers. Mostly cloudy. Lows 43 to 50. Highs 69 to 77. Terrain driven winds less than 5 mph. .MONDAY...Mostly cloudy with a chance of showers. Lows 42 to 49. Highs 65 to 74. Terrain driven winds less than 5 mph. $$ ORZ697-022315- Central Blue Mountains- 443 AM PDT Tue Sep 2 2025 .TODAY... * Sky/weather.........Mostly sunny. Hazy in the afternoon. * Max temperature.....88-93...except 83-89 ridges. * Min humidity........10-15 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.......13500 ft agl. * Transport winds.....Southwest around 5 mph. * Ventilation Index...Poor (25-48) increasing to good to excellent (554-734) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy then becoming mostly cloudy. Hazy. * Min temperature.....55-63. * Max humidity........34-45 percent. * Humidity recovery...Poor. * 20-foot winds....... * Valleys/lwr slopes...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.....East around 5 mph. * Ventilation Index...Poor to fair (157-223) decreasing to poor (25-57) after midnight. .WEDNESDAY... * Sky/weather.........Mostly cloudy then becoming partly cloudy. * Max temperature.....85-90...except 80-87 ridges. * Min humidity........17-22 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.......12000 ft agl. * Transport winds.....Southwest 5 to 10 mph. * Ventilation Index...Poor (25-56) increasing to fair to good (327-515) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy. Lows 54 to 62. Highs 81 to 88. Terrain driven winds less than 5 mph. .FRIDAY...Mostly cloudy with a slight chance of showers and thunderstorms. Lows 53 to 60. Highs 76 to 83. Terrain driven winds less than 5 mph. .SATURDAY...Mostly cloudy with a chance of showers and thunderstorms. Lows 50 to 57. Highs 72 to 79. Terrain driven winds less than 5 mph. .SUNDAY...A chance of showers and a slight chance of thunderstorms. Mostly cloudy. Lows 46 to 53. Highs 69 to 76. Terrain driven winds less than 5 mph. .MONDAY...Mostly cloudy with a chance of showers. Lows 45 to 52. Highs 66 to 73. Terrain driven winds less than 5 mph. $$ ORZ698-022315- Southern Blue Mountains- 443 AM PDT Tue Sep 2 2025 .TODAY... * Sky/weather.........Mostly sunny. Hazy in the afternoon. * Max temperature.....88-93...except 83-88 ridges. * Min humidity........9-14 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.......13000 ft agl. * Transport winds.....Southwest around 5 mph. * Ventilation Index...Poor (25-42) increasing to fair to good (481-693) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy then becoming mostly cloudy. Hazy. A slight chance of showers and thunderstorms. * Min temperature.....56-61. * Max humidity........36-46 percent. * Humidity recovery...Poor. * 20-foot winds....... * Valleys/lwr slopes...Drainage winds less than 5 mph. * Ridges/upr slopes....light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....10 percent (very low chance). * Mixing height.......Near surface. * Transport winds.....Northeast 5 to 10 mph. * Ventilation Index...Poor to fair (167-263) decreasing to poor (25-49) after midnight. .WEDNESDAY... * Sky/weather.........Mostly cloudy then becoming partly cloudy. * Max temperature.....85-90...except 80-85 ridges. * Min humidity........15-20 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.......12000 ft agl. * Transport winds.....Northwest around 10 mph shifting to the south in the afternoon. * Ventilation Index...Poor (29-75) increasing to fair to good (313-569) in the afternoon. .Forecast days 3 through 7...... .THURSDAY...Partly cloudy. Lows 54 to 60. Highs 85 to 90. Terrain driven winds less than 5 mph. .FRIDAY...Mostly cloudy with a slight chance of showers and thunderstorms. Lows 53 to 58. Highs 80 to 85. Terrain driven winds less than 5 mph. .SATURDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 50 to 56. Highs 76 to 82. North winds 1 to 5 mph. .SUNDAY...A chance of showers and a slight chance of thunderstorms. Partly cloudy. Lows 46 to 52. Highs 73 to 80. West winds 1 to 5 mph. .MONDAY...Mostly cloudy with a slight chance of showers. Lows 46 to 52. Highs 70 to 77. West winds 1 to 6 mph. $$ .8-14 DAY OUTLOOK for Tuesday September 9 through Monday September 15... A greater chance of near to above normal temperatures and above normal precipitation. $$