672 FNUS55 KCYS 270825 FWFCYS Fire Weather Planning Forecast for Southeast Wyoming/Western Nebraska National Weather Service Cheyenne WY 225 AM MDT Tue Apr 27 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM NOON TODAY TO 6 AM MDT WEDNESDAY SIERRA MADRE RANGE AND SOUTH LARAMIE RANGE... ...WINTER STORM WARNING IN EFFECT FROM NOON TODAY TO 6 AM MDT WEDNESDAY SNOWY RANGE... .DISCUSSION... A cold front over along the Wyoming/Colorado/Nebraska border will slowly push south into northeast Colorado today. A low pressure system will track east across the central Rockies through this evening, bringing a variety of precipitation including lower elevation rain showers, high elevation snow showers, and widely scattered thunderstorms. Precipitation will diminish from west to east late tonight and Wednesday morning. Higher humidities and much cooler temperatures will preclude fire weather concerns. Warmer, breezy and drier conditions are expected Thursday and Friday. WYZ301-272230- Niobrara/Lower Elevations of Converse/Thunder Basin National Grassland- 225 AM MDT Tue Apr 27 2021 .TODAY... Sky/weather.........Cloudy. Chance of showers until 1200, then showers likely and slight chance of thunderstorms. Max temperature.....45-51. 24 hr trend......25 degrees cooler. Min humidity........58-64 percent. 24 hr trend......48 percent wetter. 20-foot winds.......North around 10 mph and gusty. LAL.................1 until 1200, then 2. Chc of wetting rain.45 percent. Transport winds.....Northeast 10 to 15 mph. Mixing height.......1800-3200 ft AGL. Smoke dispersal.....Poor (24200-28300 knot-ft). Haines Index........2 or very low potential for large plume dominated fire growth. .TONIGHT... Sky/weather.........Mostly cloudy until 0300, then partly cloudy. Chance of showers until 2000. Slight chance of showers after 2000 until 2300. Min temperature.....31-36. 24 hr trend......6 degrees cooler. Max humidity........91-97 percent. 24 hr trend......11 percent wetter. Humidity recovery...Excellent. 20-foot winds.......Northwest 5 to 10 mph. LAL.................1. Chc of wetting rain.5 percent. Transport winds.....North around 10 mph. Mixing height.......600-2300 ft AGL. Smoke dispersal.....Poor (9600-21000 knot-ft). Haines Index........2 or very low potential for large plume dominated fire growth. .WEDNESDAY... Sky/weather.........Partly cloudy until 1200, then mostly sunny. Max temperature.....59-64. 24 hr trend......16 degrees warmer. Min humidity........22-28 percent. 24 hr trend......39 percent drier. 20-foot winds.......Northwest around 10 mph. Gusts up to 25 mph in the afternoon. LAL.................1. Chc of wetting rain.Zero percent. Transport winds.....Northwest 10 to 15 mph. Mixing height.......2500-3600 ft AGL increasing to 6800-7400 ft AGL in the afternoon. Smoke dispersal.....Poor (27200 knot-ft) increasing to good (84600 knot-ft) in the afternoon. Haines Index........2 or very low potential for large plume dominated fire growth. .FORECAST DAYS 3 THROUGH 7... .THURSDAY...Mostly clear. Lows in the mid 30s. Highs in the upper 60s. Northwest winds around 10 mph. .FRIDAY...Warmer. Partly cloudy. Lows in the lower 40s. Highs in the upper 70s. West winds around 10 mph. .SATURDAY...Partly cloudy. Lows in the upper 40s. Highs in the upper 70s. West winds around 10 mph. .SUNDAY...Cooler. Mostly cloudy with chance of sprinkles. Lows in the mid 40s. Highs in the mid 60s. .MONDAY...Mostly cloudy with chance of rain. Lows around 40. Highs in the mid 50s. $$ WYZ302-272230- North Laramie Range/Medicine Bow NF- 225 AM MDT Tue Apr 27 2021 .TODAY... Sky/weather.........Cloudy. Chance of showers and snow showers until 1200, then showers, snow showers and slight chance of thunderstorms. Snow accumulation up to 1 inch. Max temperature.....39-45. 24 hr trend......20 degrees cooler. Min humidity........63-69 percent. 24 hr trend......55 percent wetter. 20-foot winds.......North 5 to 10 mph and gusty. LAL.................1 until 1200, then 2. Chc of wetting rain.55 percent. Transport winds.....Northeast around 10 mph. Mixing height.......1300-2700 ft AGL. Smoke dispersal.....Poor (11300-19700 knot-ft). Haines Index........3 or very low potential for large plume dominated fire growth. .TONIGHT... Sky/weather.........Mostly cloudy until 0300, then partly cloudy. Showers and snow showers likely until 1900, then chance of showers and snow showers until 2300, then slight chance of snow showers until 0300. Snow accumulation up to 1 inch. Min temperature.....27-33. 24 hr trend......6 degrees cooler. Max humidity........87-93 percent. 24 hr trend......7 percent wetter. Humidity recovery...Excellent. 20-foot winds.......North around 10 mph. LAL.................1. Chc of wetting rain.20 percent. Transport winds.....North around 15 mph. Mixing height.......1300-2000 ft AGL. Smoke dispersal.....Poor (19100-21800 knot-ft). Haines Index........2 or very low potential for large plume dominated fire growth. .WEDNESDAY... Sky/weather.........Partly cloudy until 1200, then mostly sunny. Max temperature.....51-56. 24 hr trend......8 degrees warmer. Min humidity........28-34 percent. 24 hr trend......31 percent drier. 20-foot winds.......Northwest around 10 mph and gusty. LAL.................1. Chc of wetting rain.Zero percent. Transport winds.....North around 10 mph. Mixing height.......2300-3200 ft AGL increasing to 5400-6300 ft AGL in the afternoon. Smoke dispersal.....Poor to good (28000-63400 knot-ft). Haines Index........2 or very low potential for large plume dominated fire growth. .FORECAST DAYS 3 THROUGH 7... .THURSDAY...Mostly clear. Lows in the lower 30s. Highs in the lower 60s. Northwest winds around 10 mph. .FRIDAY...Mostly clear. Lows around 40. Highs around 70. West winds around 10 mph. .SATURDAY...Partly cloudy. Lows in the mid 40s. Highs in the lower 70s. West winds around 15 mph. .SUNDAY...Cooler. Mostly cloudy. Chance of sprinkles. Lows in the mid 40s. Highs in the upper 50s. .MONDAY...Cloudy with chance of rain and snow. Lows in the mid 30s. Highs in the lower 50s. $$ WYZ303-272230- Central and Northern Carbon/Ferris-Seminoe-Shirley Mountains- 225 AM MDT Tue Apr 27 2021 .TODAY... Sky/weather.........Cloudy. Showers likely until 1200. Snow showers likely. Showers and slight chance of thunderstorms after 1200. Little or no snow accumulation. Max temperature.....44-49. 24 hr trend......14 degrees cooler. Min humidity........47-53 percent. 24 hr trend......41 percent wetter. 20-foot winds.......West around 5 mph and gusty shifting to the north with higher gusts in the afternoon. LAL.................1 until 1200, then 3. Chc of wetting rain.50 percent. Transport winds.....Southeast around 10 mph shifting to the east in the afternoon. Mixing height.......2200-4200 ft AGL. Smoke dispersal.....Poor (18800-32000 knot-ft). Haines Index........2 or very low potential for large plume dominated fire growth. .TONIGHT... Sky/weather.........Mostly cloudy until 0300, then partly cloudy. Chance of showers and snow showers likely until 2400. Snow accumulation up to 1 inch. Min temperature.....28-33. 24 hr trend......6 degrees cooler. Max humidity........85-91 percent. 24 hr trend......6 percent wetter. Humidity recovery...Excellent. 20-foot winds.......North 5 to 10 mph. Gusts up to 25 mph decreasing to 15 mph after midnight. LAL.................1. Chc of wetting rain.10 percent. Transport winds.....Northeast around 15 mph. Mixing height.......1500-2500 ft AGL. Smoke dispersal.....Poor (20700-32000 knot-ft). Haines Index........2 or very low potential for large plume dominated fire growth. .WEDNESDAY... Sky/weather.........Partly cloudy until 1200, then mostly sunny. Max temperature.....53-59. 24 hr trend......10 degrees warmer. Min humidity........23-29 percent. 24 hr trend......26 percent drier. 20-foot winds.......Northwest 5 to 10 mph and gusty. LAL.................1. Chc of wetting rain.Zero percent. Transport winds.....North 10 to 15 mph. Mixing height.......2200-2700 ft AGL increasing to 5500-6600 ft AGL in the afternoon. Smoke dispersal.....Poor to good (20600-70300 knot-ft). Haines Index........2 or very low potential for large plume dominated fire growth. .FORECAST DAYS 3 THROUGH 7... .THURSDAY...Mostly clear. Lows in the lower 30s. Highs in the lower 60s. Northwest winds around 10 mph. .FRIDAY...Mostly clear. Lows in the upper 30s. Highs in the lower 70s. West winds around 10 mph. .SATURDAY...Partly cloudy. Lows in the mid 40s. Highs in the mid 70s. West winds around 15 mph. .SUNDAY...Cooler. Mostly cloudy. Chance of sprinkles. Lows in the lower 40s. Highs in the lower 60s. .MONDAY...Mostly cloudy with chance of rain and snow. Lows in the mid 30s. Highs in the lower 50s. $$ WYZ304-272230- Southwest Carbon County- 225 AM MDT Tue Apr 27 2021 .TODAY... Sky/weather.........Cloudy. Snow showers likely until 1200. Showers likely. Chance of thunderstorms after 1200. No snow accumulation. Max temperature.....46-51. 24 hr trend......13 degrees cooler. Min humidity........42-48 percent. 24 hr trend......40 percent wetter. 20-foot winds.......Southwest around 5 mph and gusty shifting to the north with higher gusts in the afternoon. LAL.................1 until 1200, then 3. Chc of wetting rain.40 percent. Transport winds.....South around 10 mph shifting to the northwest in the afternoon. Mixing height.......2200-3100 ft AGL increasing to 6200-7300 ft AGL in the afternoon. Smoke dispersal.....Poor (23700-36700 knot-ft). Haines Index........3 or very low potential for large plume dominated fire growth. .TONIGHT... Sky/weather.........Mostly cloudy until 2400, then partly cloudy. Slight chance of showers until 2300. Slight chance of snow showers after 2000 until 2300. Min temperature.....27-32. 24 hr trend......6 degrees cooler. Max humidity........85-91 percent. 24 hr trend......6 percent wetter. Humidity recovery...Excellent. 20-foot winds.......North 10 to 15 mph and gusty. LAL.................1. Chc of wetting rain.5 percent. Transport winds.....Northeast 20 to 25 mph. Mixing height.......1400-2300 ft AGL. Smoke dispersal.....Poor to fair (22500-42800 knot-ft). Haines Index........2 or very low potential for large plume dominated fire growth. .WEDNESDAY... Sky/weather.........Partly cloudy until 0900, then mostly sunny. Max temperature.....57-62. 24 hr trend......13 degrees warmer. Min humidity........19-25 percent. 24 hr trend......22 percent drier. 20-foot winds.......North 10 to 15 mph with higher gusts. LAL.................1. Chc of wetting rain.Zero percent. Transport winds.....North around 15 mph. Mixing height.......2200-2700 ft AGL increasing to 6600-7100 ft AGL in the afternoon. Smoke dispersal.....Poor (31000 knot-ft) increasing to very good (103400 knot-ft) in the afternoon. Haines Index........2 or very low potential for large plume dominated fire growth. .FORECAST DAYS 3 THROUGH 7... .THURSDAY...Clear. Lows in the lower 30s. Highs in the mid 60s. Northwest winds around 10 mph. .FRIDAY...Mostly clear. Lows in the mid 30s. Highs in the mid 70s. Southwest winds around 10 mph. .SATURDAY...Partly cloudy. Lows in the mid 40s. Highs in the upper 70s. Southwest winds around 10 mph. .SUNDAY...Cooler. Mostly cloudy. Chance of sprinkles. Lows in the lower 40s. Highs in the mid 60s. .MONDAY...Mostly cloudy with chance of rain. Lows in the upper 30s. Highs in the upper 50s. $$ WYZ305-272230- Sierra Madre Range/Medicine Bow NF- 225 AM MDT Tue Apr 27 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM NOON TODAY TO 6 AM MDT WEDNESDAY... .TODAY... Sky/weather.........Cloudy. Snow showers and showers likely until 1200, then showers, snow showers and chance of thunderstorms. Snow accumulation up to 1 inch. Max temperature.....41-47. 24 hr trend......8 degrees cooler. Min humidity........43-49 percent. 24 hr trend......36 percent wetter. 20-foot winds.......Southwest around 5 mph and gusty shifting to the northwest with higher gusts in the afternoon. LAL.................1 until 1200, then 3. Chc of wetting rain.65 percent. Transport winds.....South around 15 mph shifting to the north in the afternoon. Mixing height.......3900-5900 ft AGL. Smoke dispersal.....Poor to fair (25100-54500 knot-ft). Haines Index........3 or very low potential for large plume dominated fire growth. .TONIGHT... Sky/weather.........Mostly cloudy. Chance of showers until 2200. Chance of snow showers until 2300. Slight chance of snow showers after 2300. Patchy fog after 1900 until 2300. Min temperature.....27-32. 24 hr trend......4 degrees cooler. Max humidity........85-91 percent. 24 hr trend......7 percent wetter. Humidity recovery...Excellent. 20-foot winds.......North around 10 mph and gusty. LAL.................1. Chc of wetting rain.10 percent. Transport winds.....Northeast 15 to 20 mph. Mixing height.......1200-1900 ft AGL. Smoke dispersal.....Poor (19600-26500 knot-ft). Haines Index........2 or very low potential for large plume dominated fire growth. .WEDNESDAY... Sky/weather.........Mostly cloudy until 0900, then partly cloudy until 1200, then mostly sunny. Max temperature.....46-54. 24 hr trend......7 degrees warmer. Min humidity........28-34 percent. 24 hr trend......20 percent drier. 20-foot winds.......North around 10 mph and gusty. LAL.................1. Chc of wetting rain.Zero percent. Transport winds.....Northeast around 15 mph. Mixing height.......1700-2400 ft AGL increasing to 4500-6200 ft AGL in the afternoon. Smoke dispersal.....Poor (23500 knot-ft) increasing to good (76700 knot-ft) in the afternoon. Haines Index........2 or very low potential for large plume dominated fire growth. .FORECAST DAYS 3 THROUGH 7... .THURSDAY...Mostly clear. Lows around 30. Highs in the upper 50s. Northwest winds around 10 mph. .FRIDAY...Mostly clear. Lows in the mid 30s. Highs in the upper 60s. Southwest winds around 10 mph. .SATURDAY...Partly cloudy with chance of sprinkles. Lows in the lower 40s. Highs in the upper 60s. Southwest winds around 10 mph. .SUNDAY...Cooler. Partly cloudy. Chance of sprinkles. Lows in the upper 30s. Highs in the upper 50s. .MONDAY...Mostly cloudy with chance of rain and snow. Lows in the mid 30s. Highs in the lower 50s. $$ WYZ306-272230- Upper North Platte River Basin- 225 AM MDT Tue Apr 27 2021 .TODAY... Sky/weather.........Cloudy. Showers and snow showers likely until 1200, then showers, chance of thunderstorms and snow showers. No snow accumulation. Max temperature.....45-50. 24 hr trend......13 degrees cooler. Min humidity........40-46 percent. 24 hr trend......33 percent wetter. 20-foot winds.......Southwest around 5 mph shifting to the north with higher gusts in the afternoon. LAL.................1 until 1200, then 3. Chc of wetting rain.60 percent. Transport winds.....South around 10 mph shifting to the east in the afternoon. Mixing height.......2800-4000 ft AGL increasing to 5200-6300 ft AGL in the afternoon. Smoke dispersal.....Poor (29000-30700 knot-ft). Haines Index........3 or very low potential for large plume dominated fire growth. .TONIGHT... Sky/weather.........Mostly cloudy. Snow showers likely and chance of showers until 2400. Slight chance of snow showers after 2400. Snow accumulation up to 1 inch. Min temperature.....28-33. 24 hr trend......4 degrees cooler. Max humidity........89-95 percent. 24 hr trend......21 percent wetter. Humidity recovery...Excellent. 20-foot winds.......North 5 to 10 mph. Gusts up to 25 mph decreasing to 15 mph after midnight. LAL.................1. Chc of wetting rain.15 percent. Transport winds.....Northeast 10 to 15 mph. Mixing height.......1600-2100 ft AGL. Smoke dispersal.....Poor (16500-27600 knot-ft). Haines Index........2 or very low potential for large plume dominated fire growth. .WEDNESDAY... Sky/weather.........Mostly cloudy until 0900, then partly cloudy until 1200, then mostly sunny. Max temperature.....51-56. 24 hr trend......6 degrees warmer. Min humidity........24-30 percent. 24 hr trend......17 percent drier. 20-foot winds.......North 5 to 10 mph. Gusts up to 20 mph in the afternoon. LAL.................1. Chc of wetting rain.Zero percent. Transport winds.....North 10 to 15 mph. Mixing height.......2500 ft AGL increasing to 5700-6200 ft AGL in the afternoon. Smoke dispersal.....Poor to good (21100-68700 knot-ft). Haines Index........2 or very low potential for large plume dominated fire growth. .FORECAST DAYS 3 THROUGH 7... .THURSDAY...Mostly clear. Lows in the lower 30s. Highs in the lower 60s. Northwest winds around 5 mph. .FRIDAY...Mostly clear. Lows in the mid 30s. Highs in the lower 70s. Southwest winds around 10 mph. .SATURDAY...Partly cloudy. Lows in the lower 40s. Highs in the lower 70s. Southwest winds around 10 mph. .SUNDAY...Partly cloudy. Chance of sprinkles. Lows around 40. Highs in the mid 60s. .MONDAY...Cooler. Mostly cloudy with chance of rain. Lows in the mid 30s. Highs in the mid 50s. $$ WYZ307-272230- Snowy Range/Medicine Bow NF- 225 AM MDT Tue Apr 27 2021 ...WINTER STORM WARNING IN EFFECT FROM NOON TODAY TO 6 AM MDT WEDNESDAY... .TODAY... Sky/weather.........Cloudy. Snow showers and showers likely until 1200, then snow showers, showers and chance of thunderstorms. Snow accumulation up to 4 inches. Max temperature.....39-44. 24 hr trend......12 degrees cooler. Min humidity........46-52 percent. 24 hr trend......33 percent wetter. 20-foot winds.......South around 5 mph shifting to the north in the afternoon. Gusts up to 20 mph. LAL.................1 until 1200, then 3. Chc of wetting rain.70 percent. Transport winds.....South around 15 mph shifting to the southeast in the afternoon. Mixing height.......2700-4700 ft AGL. Smoke dispersal.....Poor to fair (31600-45500 knot-ft). Haines Index........3 or very low potential for large plume dominated fire growth. .TONIGHT... Sky/weather.........Mostly cloudy. Snow showers and showers likely until 2400, then slight chance of snow showers. Patchy fog after 1900 until 2400. Snow accumulation up to 6 inches. Min temperature.....23-29. 24 hr trend......Unchanged. Max humidity........92-98 percent. 24 hr trend......22 percent wetter. Humidity recovery...Excellent. 20-foot winds.......North 5 to 10 mph. LAL.................1. Chc of wetting rain.30 percent. Transport winds.....Northeast around 15 mph. Mixing height.......1200-1800 ft AGL. Smoke dispersal.....Poor (15000-21400 knot-ft). Haines Index........2 or very low potential for large plume dominated fire growth. .WEDNESDAY... Sky/weather.........Mostly cloudy until 0900, then partly cloudy until 1500, then mostly sunny. Slight chance of snow showers until 1200. Max temperature.....43-49. 24 hr trend......5 degrees warmer. Min humidity........33-39 percent. 24 hr trend......11 percent drier. 20-foot winds.......North 5 to 10 mph and gusty. LAL.................1. Chc of wetting rain.Zero percent. Transport winds.....North 10 to 15 mph. Mixing height.......1800-2300 ft AGL increasing to 4300-5300 ft AGL in the afternoon. Smoke dispersal.....Poor to fair (19300-53900 knot-ft). Haines Index........2 or very low potential for large plume dominated fire growth. .FORECAST DAYS 3 THROUGH 7... .THURSDAY...Mostly clear. Lows in the mid 20s. Highs in the lower 50s. Northwest winds around 5 mph. .FRIDAY...Mostly clear. Lows in the lower 30s. Highs in the lower 60s. West winds around 10 mph. .SATURDAY...Partly cloudy with chance of sprinkles. Lows in the upper 30s. Highs in the mid 60s. West winds around 10 mph. .SUNDAY...Cooler. Partly cloudy. Chance of sprinkles and slight chance of snow. Lows in the upper 30s. Highs in the mid 50s. .MONDAY...Mostly cloudy with rain and snow likely. Lows in the lower 30s. Highs in the upper 40s. $$ WYZ308-272230- Laramie Valley/Shirley Basin- 225 AM MDT Tue Apr 27 2021 .TODAY... Sky/weather.........Cloudy. Snow showers likely and chance of showers until 1200, then showers, snow showers and slight chance of thunderstorms. Little or no snow accumulation. Max temperature.....44-49. 24 hr trend......17 degrees cooler. Min humidity........48-54 percent. 24 hr trend......41 percent wetter. 20-foot winds.......North 5 to 10 mph. Gusts up to 25 mph in the afternoon. LAL.................1 until 1200, then 3. Chc of wetting rain.65 percent. Transport winds.....East 10 to 15 mph. Mixing height.......1600-3600 ft AGL. Smoke dispersal.....Poor (14800-35000 knot-ft). Haines Index........3 or very low potential for large plume dominated fire growth. .TONIGHT... Sky/weather.........Mostly cloudy. Showers and snow showers likely until 2400Slight chance of snow showers after 2400. Patchy fog after 2000 until 2100. Snow accumulation up to 2 inches. Min temperature.....27-32. 24 hr trend......7 degrees cooler. Max humidity........90-96 percent. 24 hr trend......18 percent wetter. Humidity recovery...Excellent. 20-foot winds.......North 5 to 10 mph. LAL.................1. Chc of wetting rain.25 percent. Transport winds.....North around 15 mph. Mixing height.......1200-2000 ft AGL. Smoke dispersal.....Poor (17200-21600 knot-ft). Haines Index........2 or very low potential for large plume dominated fire growth. .WEDNESDAY... Sky/weather.........Mostly cloudy until 0900, then partly cloudy until 1500, then mostly sunny. Slight chance of snow showers until 1200. Max temperature.....50-56. 24 hr trend......5 degrees warmer. Min humidity........29-35 percent. 24 hr trend......18 percent drier. 20-foot winds.......Northwest around 10 mph and gusty. LAL.................1. Chc of wetting rain.Zero percent. Transport winds.....North around 10 mph. Mixing height.......2200-2700 ft AGL increasing to 5100-6200 ft AGL in the afternoon. Smoke dispersal.....Poor to fair (24000-58100 knot-ft). Haines Index........2 or very low potential for large plume dominated fire growth. .FORECAST DAYS 3 THROUGH 7... .THURSDAY...Mostly clear. Lows in the upper 20s. Highs in the lower 60s. Northwest winds around 10 mph. .FRIDAY...Mostly clear. Lows in the mid 30s. Highs in the lower 70s. West winds around 10 mph. .SATURDAY...Partly cloudy. Lows in the lower 40s. Highs in the lower 70s. West winds around 10 mph. .SUNDAY...Cooler. Mostly cloudy. Chance of sprinkles. Lows around 40. Highs in the lower 60s. .MONDAY...Mostly cloudy with chance of rain. Lows in the mid 30s. Highs in the lower 50s. $$ WYZ309-272230- South Laramie Range/Medicine Bow NF- 225 AM MDT Tue Apr 27 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM NOON TODAY TO 6 AM MDT WEDNESDAY... .TODAY... Sky/weather.........Cloudy. Chance of showers and snow showers until 0900, then showers and snow showers likely until 1200, then showers, chance of thunderstorms and snow showers. Little or no snow accumulation. Max temperature.....42-48. 24 hr trend......25 degrees cooler. Min humidity........56-62 percent. 24 hr trend......52 percent wetter. 20-foot winds.......North 5 to 10 mph. Gusts up to 15 mph increasing to 25 mph in the afternoon. LAL.................1 until 1200, then 3. Chc of wetting rain.65 percent. Transport winds.....Northeast around 15 mph. Mixing height.......1400-2800 ft AGL. Smoke dispersal.....Poor (18400-27100 knot-ft). Haines Index........3 or very low potential for large plume dominated fire growth. .TONIGHT... Sky/weather.........Mostly cloudy. Patchy fog until 0500. Showers and snow showers until 2400Chance of snow showers and showers after 2400. Snow accumulation up to 3 inches. Min temperature.....30-36. 24 hr trend......5 degrees cooler. Max humidity........92-98 percent. 24 hr trend......27 percent wetter. Humidity recovery...Excellent. 20-foot winds.......North around 10 mph and gusty. LAL.................2 until 2400, then 1. Chc of wetting rain.40 percent. Transport winds.....North around 20 mph. Mixing height.......1400-2400 ft AGL. Smoke dispersal.....Poor (26800-31300 knot-ft). Haines Index........2 or very low potential for large plume dominated fire growth. .WEDNESDAY... Sky/weather.........Mostly cloudy until 0900, then partly cloudy until 1500, then mostly sunny. Slight chance of snow showers until 1200. Slight chance of showers after 0700 until 1200. Max temperature.....49-57. 24 hr trend......8 degrees warmer. Min humidity........32-38 percent. 24 hr trend......24 percent drier. 20-foot winds.......North 10 to 15 mph with higher gusts. LAL.................1. Chc of wetting rain.Zero percent. Transport winds.....North 15 to 20 mph. Mixing height.......2200-3300 ft AGL increasing to 5000-6300 ft AGL in the afternoon. Smoke dispersal.....Fair to good (40500-70000 knot-ft). Haines Index........2 or very low potential for large plume dominated fire growth. .FORECAST DAYS 3 THROUGH 7... .THURSDAY...Mostly clear. Lows in the lower 30s. Highs in the lower 60s. Northwest winds around 10 mph. .FRIDAY...Warmer. Mostly clear. Lows in the upper 30s. Highs in the lower 70s. West winds around 10 mph. .SATURDAY...Partly cloudy. Lows in the upper 40s. Highs in the lower 70s. West winds around 15 mph. .SUNDAY...Cooler. Mostly cloudy. Chance of sprinkles. Lows in the mid 40s. Highs in the lower 60s. .MONDAY...Mostly cloudy with chance of rain. Lows in the upper 30s. Highs in the mid 50s. $$ WYZ310-272230- Platte/Goshen/Central and Eastern Laramie- 225 AM MDT Tue Apr 27 2021 .TODAY... Sky/weather.........Cloudy. Chance of showers until 1200, then showers and slight chance of thunderstorms. Max temperature.....48-53. 24 hr trend......24 degrees cooler. Min humidity........56-62 percent. 24 hr trend......55 percent wetter. 20-foot winds.......North 10 to 15 mph. Gusts up to 20 mph increasing to 30 mph in the afternoon. LAL.................1 until 1200, then 3. Chc of wetting rain.50 percent. Transport winds.....Northeast 10 to 15 mph. Mixing height.......1800-3300 ft AGL. Smoke dispersal.....Poor (25900-30900 knot-ft). Haines Index........3 or very low potential for large plume dominated fire growth. .TONIGHT... Sky/weather.........Mostly cloudy. Showers and slight chance of thunderstorms until 2400. Chance of showers after 2400. Patchy fog after 2000 until 2100. Patchy fog after 2300 until 0500. Min temperature.....33-38. 24 hr trend......3 degrees cooler. Max humidity........93-99 percent. 24 hr trend......21 percent wetter. Humidity recovery...Excellent. 20-foot winds.......North around 10 mph. Gusts up to 30 mph decreasing to 20 mph after midnight. LAL.................2 until 2400, then 1. Chc of wetting rain.40 percent. Transport winds.....North around 20 mph. Mixing height.......1500-2600 ft AGL. Smoke dispersal.....Poor (27600-38100 knot-ft). Haines Index........2 or very low potential for large plume dominated fire growth. .WEDNESDAY... Sky/weather.........Mostly cloudy until 0900, then partly cloudy until 1500, then mostly sunny. Slight chance of showers until 1200. Max temperature.....56-62. 24 hr trend......10 degrees warmer. Min humidity........26-32 percent. 24 hr trend......29 percent drier. 20-foot winds.......North 10 to 15 mph with higher gusts. LAL.................1. Chc of wetting rain.Zero percent. Transport winds.....North around 15 mph. Mixing height.......2700-3200 ft AGL increasing to 6000-7200 ft AGL in the afternoon. Smoke dispersal.....Fair to good (42200-85400 knot-ft). Haines Index........2 or very low potential for large plume dominated fire growth. .FORECAST DAYS 3 THROUGH 7... .THURSDAY...Mostly clear. Lows in the mid 30s. Highs in the mid 60s. Northwest winds around 10 mph. .FRIDAY...Warmer. Mostly clear. Lows in the upper 30s. Highs in the upper 70s. Winds generally less than 10 mph. .SATURDAY...Partly cloudy. Lows in the upper 40s. Highs in the upper 70s. West winds around 10 mph. .SUNDAY...Cooler. Mostly cloudy. Chance of sprinkles. Lows in the upper 40s. Highs in the upper 60s. .MONDAY...Mostly cloudy with chance of rain. Lows in the lower 40s. Highs in the upper 50s. $$ NEZ311-272230- Pine Ridge/Nebraska National Forest/Oglala National Grasslands- 225 AM MDT Tue Apr 27 2021 .TODAY... Sky/weather.........Cloudy. Chance of showers until 1200, then showers likely. Max temperature.....46-52. 24 hr trend......28 degrees cooler. Min humidity........68-74 percent. 24 hr trend......61 percent wetter. 20-foot winds.......Northeast 10 to 15 mph with higher gusts. LAL.................1 until 1200, then 2. Chc of wetting rain.35 percent. Transport winds.....Northeast around 20 mph. Mixing height.......1400-2800 ft AGL. Smoke dispersal.....Poor (28000-37300 knot-ft). Haines Index........2 or very low potential for large plume dominated fire growth. .TONIGHT... Sky/weather.........Mostly cloudy. Showers likely until 2200. Chance of showers after 2200 until 2400, then slight chance of showers. Patchy fog after 2000 until 2100. Min temperature.....35-40. 24 hr trend......5 degrees cooler. Max humidity........93-99 percent. 24 hr trend......Unchanged. Humidity recovery...Excellent. 20-foot winds.......North around 10 mph. Gusts up to 25 mph decreasing to 15 mph after midnight. LAL.................1. Chc of wetting rain.20 percent. Transport winds.....North 15 to 20 mph. Mixing height.......1300-2500 ft AGL. Smoke dispersal.....Poor (18000-36300 knot-ft). Haines Index........2 or very low potential for large plume dominated fire growth. .WEDNESDAY... Sky/weather.........Partly cloudy until 1200, then mostly sunny. Max temperature.....59-65. 24 hr trend......18 degrees warmer. Min humidity........24-30 percent. 24 hr trend......46 percent drier. 20-foot winds.......North around 10 mph and gusty. LAL.................1. Chc of wetting rain.Zero percent. Transport winds.....North 10 to 15 mph. Mixing height.......2200-2700 ft AGL increasing to 6600-7400 ft AGL in the afternoon. Smoke dispersal.....Poor (24700 knot-ft) increasing to good (80600 knot-ft) in the afternoon. Haines Index........3 or very low potential for large plume dominated fire growth. .FORECAST DAYS 3 THROUGH 7... .THURSDAY...Mostly clear. Lows in the mid 30s. Highs in the upper 60s. Northwest winds around 10 mph. .FRIDAY...Warmer. Mostly clear. Lows in the lower 40s. Highs in the upper 70s. West winds around 10 mph. .SATURDAY...Partly cloudy. Lows in the upper 40s. Highs in the upper 70s. West winds around 10 mph. .SUNDAY...Cooler. Partly cloudy with chance of sprinkles. Lows in the upper 40s. Highs in the mid 60s. .MONDAY...Mostly cloudy with chance of rain. Lows in the lower 40s. Highs in the upper 50s. $$ NEZ312-272230- Box Butte/South Sioux- 225 AM MDT Tue Apr 27 2021 .TODAY... Sky/weather.........Cloudy. Chance of showers until 1200, then showers likely and slight chance of thunderstorms. Max temperature.....48-53. 24 hr trend......26 degrees cooler. Min humidity........64-70 percent. 24 hr trend......55 percent wetter. 20-foot winds.......Northeast around 15 mph with higher gusts. LAL.................1 until 1200, then 2. Chc of wetting rain.40 percent. Transport winds.....Northeast 15 to 20 mph. Mixing height.......1200-2600 ft AGL. Smoke dispersal.....Poor (21100-33200 knot-ft). Haines Index........3 or very low potential for large plume dominated fire growth. .TONIGHT... Sky/weather.........Cloudy. Showers likely until 2300. Chance of showers after 2300. Patchy fog after 2000 until 2100. Min temperature.....34-39. 24 hr trend......4 degrees cooler. Max humidity........100 percent. 24 hr trend......Unchanged. Humidity recovery...Excellent. 20-foot winds.......North 10 to 15 mph. Gusts up to 30 mph decreasing to 20 mph after midnight. LAL.................1. Chc of wetting rain.35 percent. Transport winds.....North 20 to 25 mph. Mixing height.......1600-2200 ft AGL. Smoke dispersal.....Poor to fair (30600-44400 knot-ft). Haines Index........2 or very low potential for large plume dominated fire growth. .WEDNESDAY... Sky/weather.........Mostly cloudy until 0900, then partly cloudy until 1500, then mostly sunny. Max temperature.....58-63. 24 hr trend......10 degrees warmer. Min humidity........24-30 percent. 24 hr trend......37 percent drier. 20-foot winds.......North around 15 mph with higher gusts. LAL.................1. Chc of wetting rain.Zero percent. Transport winds.....North around 15 mph. Mixing height.......2200-2700 ft AGL increasing to 6700-7200 ft AGL in the afternoon. Smoke dispersal.....Poor (32400 knot-ft) increasing to good (86600 knot-ft) in the afternoon. Haines Index........2 or very low potential for large plume dominated fire growth. .FORECAST DAYS 3 THROUGH 7... .THURSDAY...Mostly clear. Lows in the mid 30s. Highs in the upper 60s. Northwest winds around 10 mph. .FRIDAY...Warmer. Mostly clear. Lows in the upper 30s. Highs in the upper 70s. West winds around 10 mph. .SATURDAY...Partly cloudy. Lows in the upper 40s. Highs in the lower 80s. West winds around 10 mph. .SUNDAY...Cooler. Partly cloudy. Chance of sprinkles. Lows in the upper 40s. Highs in the upper 60s. .MONDAY...Mostly cloudy with chance of rain. Lows in the lower 40s. Highs around 60. $$ NEZ313-272230- Scotts Bluff National Monument/Wildcat Hills- 225 AM MDT Tue Apr 27 2021 .TODAY... Sky/weather.........Mostly cloudy. Chance of showers until 1200, then showers and chance of thunderstorms. Max temperature.....52-57. 24 hr trend......25 degrees cooler. Min humidity........55-61 percent. 24 hr trend......48 percent wetter. 20-foot winds.......North around 15 mph with higher gusts. LAL.................1 until 1200, then 3. Chc of wetting rain.50 percent. Transport winds.....Northeast around 15 mph. Mixing height.......1300-1800 ft AGL increasing to 3000-3800 ft AGL in the afternoon. Smoke dispersal.....Poor to fair (19200-46700 knot-ft). Haines Index........3 or very low potential for large plume dominated fire growth. .TONIGHT... Sky/weather.........Cloudy. Showers until 2200. Slight chance of thunderstorms until 2400. Showers likely after 2200. Patchy fog after 1900 until 2100. Patchy fog after 2400 until 0400. Min temperature.....34-40. 24 hr trend......4 degrees cooler. Max humidity........94-100 percent. 24 hr trend......11 percent wetter. Humidity recovery...Excellent. 20-foot winds.......North around 15 mph and gusty. LAL.................2 until 2400, then 1. Chc of wetting rain.60 percent. Transport winds.....North around 25 mph. Mixing height.......1700-2300 ft AGL. Smoke dispersal.....Fair (41400-43100 knot-ft). Haines Index........2 or very low potential for large plume dominated fire growth. .WEDNESDAY... Sky/weather.........Mostly cloudy until 0900, then partly cloudy. Slight chance of showers until 1200. Max temperature.....58-63. 24 hr trend......6 degrees warmer. Min humidity........30-36 percent. 24 hr trend......22 percent drier. 20-foot winds.......North around 15 mph with higher gusts. LAL.................1. Chc of wetting rain.5 percent. Transport winds.....North 15 to 20 mph. Mixing height.......2300-2800 ft AGL increasing to 5700-7100 ft AGL in the afternoon. Smoke dispersal.....Fair to good (41400-82200 knot-ft). Haines Index........2 or very low potential for large plume dominated fire growth. .FORECAST DAYS 3 THROUGH 7... .THURSDAY...Mostly clear. Lows in the mid 30s. Highs in the mid 60s. Northwest winds around 10 mph. .FRIDAY...Warmer. Mostly clear. Lows in the upper 30s. Highs in the upper 70s. Winds generally less than 10 mph. .SATURDAY...Partly cloudy. Lows in the upper 40s. Highs in the lower 80s. West winds around 10 mph. .SUNDAY...Not as warm. Partly cloudy. Slight chance of rain. Lows in the upper 40s. Highs in the lower 70s. .MONDAY...Cooler. Mostly cloudy with chance of rain. Lows in the lower 40s. Highs in the lower 60s. $$ MAJ