


Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Pocatello, ID
Issued by NWS Pocatello, ID
113 FNUS55 KPIH 200758 FWFPIH Fire Weather Planning Forecast for Southeast Idaho National Weather Service Pocatello ID 158 AM MDT Wed Aug 20 2025 .DISCUSSION... * Central Idaho Dispatch Area weather impact summary (Zones 475 and 476)... A weak shortwave trough passage today will support an increase in cloud cover in addition to isolated showers/virga and dry thunderstorms. Otherwise, hot and dry conditions will continue with RHs in the teens/20s and wind gusts up to 25 mph. High pressure Thursday through Saturday will keep conditions hot and dry heading into the weekend, as monsoon moisture begins to build in starting Sunday. This will support the return of isolated to scattered showers and thunderstorms, cooler temperatures, and increased RH for early to mid next week. * East Idaho Dispatch Area weather impact summary (Zones 410...411 and 413)... A weak shortwave trough passage today will support an increase in cloud cover in addition to isolated showers/virga and dry thunderstorms. Otherwise, hot and dry conditions will continue with RHs in the teens/20s and wind gusts up to 30 mph. High pressure Thursday and Friday will keep conditions hot and dry overall outside of very isolated showers and storms along the Wyoming border region Thursday afternoon. Heading into the weekend, monsoon moisture will begin to build in. This will support the return of isolated to scattered showers and thunderstorms, cooler temperatures, and increased RH for starting Saturday for early to mid next week. * South Central Idaho Dispatch Area weather impact summary (Zones 422...425 and 427)... A weak shortwave trough passage today will support an increase in cloud cover in addition to isolated showers/virga and dry thunderstorms. Otherwise, hot and dry conditions will continue with RHs in the teens/20s and wind gusts up to 25 mph. High pressure Thursday and Friday will keep conditions hot and dry. Heading into the weekend, monsoon moisture will begin to build in. This will support the return of isolated to scattered showers and thunderstorms, cooler temperatures, and increased RH for early to mid next week. IDZ475-202215- East Salmon River Mountains/Salmon NF- 158 AM MDT Wed Aug 20 2025 .Today... * Sky/weather........Mostly sunny. Areas of smoke through the day. Slight chance of showers and thunderstorms in the afternoon. * Chc of thunder.....20 percent. * Max Temperature....78-85 valleys and 70-77 ridges. 24 hr trend......5 degrees down. * Min Humidity.......18-26 percent. 24 hr trend......5 percent up. * 20ft winds......... Valleys/lwr slopes...West 6 to 11 mph. Ridges/upr slopes....West 6 to 11 mph. Gusts up to 20 mph in the afternoon. * Chc Wetting Rain...10 percent. * Mixing Height......14000-15000 ft AGL. * Transport Winds....Light winds becoming southwest around 20 mph in the afternoon. .TONIGHT... * Sky/weather........Clear. Slight chance of rain in the evening. Areas of smoke through the night. * Chc of thunder.....0 percent. * Min Temperature....46-53. 24 hr trend......6 degrees down. * Max Humidity.......58-66 percent. 24 hr trend......13 percent up. * 20ft winds......... Valleys/lwr slopes...North 6 to 11 mph. Ridges/upr slopes....North 6 to 11 mph with gusts to around 20 mph. * Chc Wetting Rain...0 percent. * Mixing Height......0-1000 ft AGL. * Transport Winds....Northwest around 15 mph in the evening becoming light. .THURSDAY... * Sky/weather........Sunny. Areas of smoke in the morning. * Chc of thunder.....0 percent. * Max Temperature....76-83 valleys and 68-75 ridges. 24 hr trend......2 degrees down. * Min Humidity.......14-22 percent. 24 hr trend......4 percent down. * 20ft winds......... Valleys/lwr slopes...Light winds becoming west 4 to 6 mph in the afternoon. Ridges/upr slopes....Northeast around 4 mph shifting to the west 4 to 7 mph with gusts to around 15 mph in the afternoon. * Chc Wetting Rain...0 percent. * Mixing Height......11250-12250 ft AGL. * Transport Winds....Light winds becoming west around 10 mph in the afternoon. .Forecast days 3 through 7...... .FRIDAY...Clear. Lows 47 to 54. Highs 76 to 83. North winds 5 to 10 mph with gusts to around 15 mph. .SATURDAY...Clear. Lows 48 to 55. Highs 78 to 85. North winds 5 to 10 mph with gusts to around 15 mph. .SUNDAY...Partly cloudy. Slight chance of showers. Lows 52 to 59. Highs 74 to 81. North winds 5 to 10 mph with gusts to around 20 mph. .MONDAY...Mostly cloudy. Slight chance of showers and thunderstorms. Lows in the mid 50s. Highs in the mid 70s. .TUESDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows in the lower 50s. Highs in the lower 70s. $$ IDZ476-202215- Lemhi and Lost River Range/Challis NF- 158 AM MDT Wed Aug 20 2025 .Today... * Sky/weather........Mostly sunny. Areas of smoke in the morning. Slight chance of rain showers through the day. * Chc of thunder.....0 percent. * Max Temperature....82-89 valleys and 71-78 ridges. 24 hr trend......3 degrees down. * Min Humidity.......14-22 percent. 24 hr trend......5 percent up. * 20ft winds......... Valleys/lwr slopes...Southwest 7 to 12 mph. Ridges/upr slopes....Southwest 8 to 13 mph with gusts to around 20 mph. * Chc Wetting Rain...0 percent. * Mixing Height......14750-16250 ft AGL. * Transport Winds....Light winds becoming southwest around 20 mph in the afternoon. .TONIGHT... * Sky/weather........Clear. Areas of smoke after midnight. * Chc of thunder.....0 percent. * Min Temperature....46-53. 24 hr trend......6 degrees down. * Max Humidity.......55-63 percent valleys and 49-57 percent ridges. 24 hr trend......23 percent up. * 20ft winds......... Valleys/lwr slopes...Northwest 7 to 12 mph. Ridges/upr slopes....Northwest 7 to 12 mph with gusts to around 20 mph. * Chc Wetting Rain...0 percent. * Mixing Height......0-1000 ft AGL. * Transport Winds....Northwest 10 to 15 mph. .THURSDAY... * Sky/weather........Sunny. * Chc of thunder.....0 percent. * Max Temperature....79-86 valleys and 69-76 ridges. 24 hr trend......2 degrees down. * Min Humidity.......13-18 percent. 24 hr trend......4 percent down. * 20ft winds......... Valleys/lwr slopes...Northwest 4 to 8 mph. Ridges/upr slopes....Northwest 4 to 9 mph with gusts to around 15 mph. * Chc Wetting Rain...0 percent. * Mixing Height......12750-13750 ft AGL. * Transport Winds....Light winds becoming west around 15 mph in the afternoon. .Forecast days 3 through 7...... .FRIDAY...Clear. Lows 46 to 53. Highs 75 to 82. North winds 10 to 15 mph with gusts to around 20 mph. .SATURDAY...Clear. Lows 47 to 54. Highs 76 to 83. North winds 5 to 10 mph with gusts to around 20 mph. .SUNDAY...Partly cloudy. Chance of showers. Lows 51 to 58. Highs 72 to 79. North winds 5 to 10 mph with gusts to around 20 mph. .MONDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows in the lower 50s. Highs in the lower 70s. .TUESDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows in the lower 50s. Highs in the lower 70s. $$ IDZ422-202215- Sawtooth Range/Northern Sawtooth NF- 158 AM MDT Wed Aug 20 2025 .Today... * Sky/weather........Mostly sunny. Slight chance of rain showers in the afternoon. * Chc of thunder.....0 percent. * Max Temperature....82-89 valleys and 70-77 ridges. 24 hr trend......3 degrees down. * Min Humidity.......14-20 percent valleys and 17-25 percent ridges. 24 hr trend......5 percent up. * 20ft winds......... Valleys/lwr slopes...Southwest 6 to 11 mph. Ridges/upr slopes....Southwest 6 to 11 mph with gusts to around 20 mph. * Chc Wetting Rain...0 percent. * Mixing Height......13250-14250 ft AGL. * Transport Winds....Light winds becoming southwest around 20 mph in the afternoon. .TONIGHT... * Sky/weather........Clear. * Chc of thunder.....0 percent. * Min Temperature....48-55. 24 hr trend......5 degrees down. * Max Humidity.......39-47 percent. 24 hr trend......8 percent up. * 20ft winds......... Valleys/lwr slopes...Northwest 6 to 11 mph. Ridges/upr slopes....West 6 to 11 mph shifting to the north 5 to 8 mph after midnight. Gusts up to 20 mph. * Chc Wetting Rain...0 percent. * Mixing Height......0-1000 ft AGL. * Transport Winds....West around 15 mph shifting to the north after midnight. .THURSDAY... * Sky/weather........Sunny. * Chc of thunder.....0 percent. * Max Temperature....80-87 valleys and 69-76 ridges. 24 hr trend......Little change. * Min Humidity.......12-17 percent. 24 hr trend......5 percent down. * 20ft winds......... Valleys/lwr slopes...North 5 to 8 mph shifting to the southwest 5 to 10 mph in the afternoon. Ridges/upr slopes....North 4 to 6 mph shifting to the west 5 to 8 mph with gusts to around 15 mph in the afternoon. * Chc Wetting Rain...0 percent. * Mixing Height......10500-11500 ft AGL. * Transport Winds....West 10 to 15 mph. .Forecast days 3 through 7...... .FRIDAY...Clear. Lows 48 to 55. Highs 77 to 84. Northwest winds 10 to 15 mph with gusts to around 20 mph. .SATURDAY...Mostly clear. Lows 50 to 57. Highs 79 to 86. Northwest winds 5 to 10 mph with gusts to around 20 mph. .SUNDAY...Mostly cloudy. Slight chance of showers. Lows 54 to 61. Highs 73 to 80. Northwest winds 5 to 10 mph with gusts to around 15 mph. .MONDAY...Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the mid 50s. Highs in the mid 70s. .TUESDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows in the lower 50s. Highs in the lower 70s. $$ IDZ425-202215- Middle Snake River Valley/Twin Falls BLM north of the Snake River- 158 AM MDT Wed Aug 20 2025 .Today... * Sky/weather........Partly cloudy then becoming mostly sunny. Slight chance of rain showers through the day. * Chc of thunder.....0 percent. * Max Temperature....Around 91. 24 hr trend......6 degrees down. * Min Humidity.......17-25 percent. 24 hr trend......6 percent up. * 20ft winds.........Southwest winds 6 to 11 mph with gusts to around 20 mph. * Chc Wetting Rain...0 percent. * Mixing Height......10750-11750 ft AGL. * Transport Winds....Southwest 10 to 15 mph. .TONIGHT... * Sky/weather........Mostly clear. * Chc of thunder.....0 percent. * Min Temperature....54-59. 24 hr trend......4 degrees down. * Max Humidity.......44-52 percent. 24 hr trend......4 percent up. * 20ft winds.........West winds 6 to 11 mph. Gusts up to 20 mph in the evening. * Chc Wetting Rain...0 percent. * Mixing Height......0-1000 ft AGL. * Transport Winds....West around 10 mph. .THURSDAY... * Sky/weather........Sunny. * Chc of thunder.....0 percent. * Max Temperature....Around 90. 24 hr trend......Little change. * Min Humidity.......13-18 percent. 24 hr trend......5 percent down. * 20ft winds.........West winds 4 to 9 mph. Gusts up to 20 mph in the afternoon. * Chc Wetting Rain...0 percent. * Mixing Height......9750-10750 ft AGL. * Transport Winds....Light winds becoming west around 15 mph in the afternoon. .Forecast days 3 through 7...... .FRIDAY...Partly cloudy. Lows 54 to 59. Highs in the lower 90s. West winds 10 to 15 mph with gusts to around 20 mph. .SATURDAY...Mostly clear. Lows in the upper 50s. Highs in the mid 90s. Northeast winds 5 to 10 mph with gusts to around 20 mph. .SUNDAY...Mostly cloudy. Slight chance of showers. Lows 60 to 65. Highs in the upper 80s. East winds 5 to 10 mph with gusts to around 15 mph. .MONDAY...Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the upper 50s. Highs in the mid 80s. .TUESDAY...Partly cloudy with chance of showers and slight chance of thunderstorms. Lows in the upper 50s. Highs in the lower 80s. $$ IDZ427-202215- Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls BLM south of the Snake River- 158 AM MDT Wed Aug 20 2025 .Today... * Sky/weather........Partly cloudy. Slight chance of rain showers through the day. Slight chance of thunderstorms in the afternoon. * Chc of thunder.....20 percent. * Max Temperature....83-90. 24 hr trend......4 degrees down. * Min Humidity.......20-28 percent. 24 hr trend......8 percent up. * 20ft winds......... Valleys/lwr slopes...Northwest 4 to 9 mph. Ridges/upr slopes....Northwest 4 to 9 mph. Gusts up to 20 mph in the afternoon. * Chc Wetting Rain...10 percent. * Mixing Height......11750-12750 ft AGL. * Transport Winds....West 10 to 15 mph. .TONIGHT... * Sky/weather........Mostly clear. * Chc of thunder.....0 percent. * Min Temperature....55-62. 24 hr trend......4 degrees down. * Max Humidity.......38-46 percent valleys and 34-42 percent ridges. 24 hr trend......3 percent up. * 20ft winds......... Valleys/lwr slopes...West 5 to 10 mph. Ridges/upr slopes....West 5 to 10 mph with gusts to around 20 mph. * Chc Wetting Rain...0 percent. * Mixing Height......0-1000 ft AGL. * Transport Winds....Northwest around 10 mph. .THURSDAY... * Sky/weather........Partly cloudy then becoming mostly sunny. * Chc of thunder.....0 percent. * Max Temperature....Around 88 valleys and 79-86 ridges. 24 hr trend......2 degrees down. * Min Humidity.......15-22 percent. 24 hr trend......5 percent down. * 20ft winds......... Valleys/lwr slopes...Northwest 4 to 8 mph. Ridges/upr slopes....Northwest 4 to 8 mph with gusts to around 15 mph. * Chc Wetting Rain...0 percent. * Mixing Height......8500-9500 ft AGL. * Transport Winds....Northwest around 10 mph. .Forecast days 3 through 7...... .FRIDAY...Partly cloudy. Lows 56 to 63. Highs 84 to 91. Northwest winds 5 to 10 mph with gusts to around 15 mph. .SATURDAY...Mostly clear. Slight chance of showers. Lows 57 to 64. Highs 86 to 93. North winds 5 to 10 mph with gusts to around 15 mph. .SUNDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows 60 to 67. Highs 79 to 86. Southwest winds 5 to 10 mph with gusts to around 15 mph. .MONDAY...Mostly cloudy with showers likely and slight chance of thunderstorms. Lows in the upper 50s. Highs in the upper 70s. .TUESDAY...Mostly cloudy with showers likely and slight chance of thunderstorms. Lows in the upper 50s. Highs in the mid 70s. $$ IDZ410-202215- Upper Snake River Valley/Idaho Falls BLM- 158 AM MDT Wed Aug 20 2025 .Today... * Sky/weather........Partly cloudy. Slight chance of rain showers. * Chc of thunder.....0 percent. * Max Temperature....86-93. 24 hr trend......3 degrees down. * Min Humidity.......15-23 percent. 24 hr trend......6 percent up. * 20ft winds.........Southwest winds 10 to 15 mph with gusts to around 20 mph. * Chc Wetting Rain...0 percent. * Mixing Height......14000-15000 ft AGL. * Transport Winds....South around 10 mph increasing to southwest around 20 mph in the afternoon. .TONIGHT... * Sky/weather........Mostly clear. * Chc of thunder.....0 percent. * Min Temperature....52-59. 24 hr trend......3 degrees down. * Max Humidity.......51-59 percent. 24 hr trend......20 percent up. * 20ft winds.........Southwest winds 10 to 15 mph shifting to the north 6 to 9 mph after midnight. Gusts up to 20 mph. * Chc Wetting Rain...0 percent. * Mixing Height......0-1000 ft AGL. * Transport Winds....Southwest around 15 mph shifting to the northwest after midnight. .THURSDAY... * Sky/weather........Sunny. * Chc of thunder.....0 percent. * Max Temperature....84-91. 24 hr trend......Little change. * Min Humidity.......12-17 percent. 24 hr trend......5 percent down. * 20ft winds.........North winds 4 to 7 mph shifting to the southwest 6 to 9 mph in the afternoon. Gusts up to 15 mph. * Chc Wetting Rain...0 percent. * Mixing Height......13750-14750 ft AGL. * Transport Winds....North around 10 mph shifting to the west in the afternoon. .Forecast days 3 through 7...... .FRIDAY...Mostly clear. Lows 51 to 58. Highs 85 to 92. Northwest winds 10 to 15 mph with gusts to around 20 mph. .SATURDAY...Clear. Lows 51 to 58. Highs 86 to 93. North winds 10 to 15 mph with gusts to around 20 mph. .SUNDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 54 to 61. Highs 81 to 88. Northeast winds 10 to 15 mph with gusts to around 20 mph. .MONDAY...Mostly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the mid 50s. Highs in the lower 80s. .TUESDAY...Partly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the lower 50s. Highs in the upper 70s. $$ IDZ411-202215- Centennial Mountains and Snake River Range/Targhee NF- 158 AM MDT Wed Aug 20 2025 .Today... * Sky/weather........Partly cloudy. Slight chance of rain showers through the day. Isolated thunderstorms in the afternoon. * Chc of thunder.....20 percent. * Max Temperature....Around 86 valleys and 77-84 ridges. 24 hr trend......3 degrees down. * Min Humidity.......17-25 percent. 24 hr trend......7 percent up. * 20ft winds......... Valleys/lwr slopes...East 4 to 5 mph shifting to the southwest 5 to 8 mph in the afternoon. Ridges/upr slopes....South 4 to 7 mph shifting to the southwest 7 to 12 mph in the afternoon. Gusts up to 20 mph. * Chc Wetting Rain...0 percent. * Mixing Height......12000-13000 ft AGL. * Transport Winds....South around 10 mph increasing to southwest around 20 mph in the afternoon. .TONIGHT... * Sky/weather........Mostly clear. Slight chance of rain showers in the evening. * Chc of thunder.....0 percent. * Min Temperature....50-57. 24 hr trend......3 degrees down. * Max Humidity.......66-74 percent valleys and 51-59 percent ridges. 24 hr trend......25 percent up. * 20ft winds......... Valleys/lwr slopes...South 5 to 8 mph shifting to the northeast around 4 mph after midnight. Ridges/upr slopes....Southwest 6 to 11 mph shifting to the northeast 5 to 8 mph after midnight. Gusts up to 20 mph. * Chc Wetting Rain...0 percent. * Mixing Height......100-1100 ft AGL. * Transport Winds....Southwest around 15 mph shifting to the north after midnight. .THURSDAY... * Sky/weather........Sunny. * Chc of thunder.....0 percent. * Max Temperature....Around 86 valleys and 75-82 ridges. 24 hr trend......Little change. * Min Humidity.......15-21 percent. 24 hr trend......3 percent down. * 20ft winds......... Valleys/lwr slopes...Northeast around 4 mph shifting to the west 4 to 6 mph in the afternoon. Ridges/upr slopes....Northeast 5 to 8 mph shifting to the west in the afternoon. Gusts up to 15 mph. * Chc Wetting Rain...0 percent. * Mixing Height......11250-12250 ft AGL. * Transport Winds....Northwest around 10 mph increasing to west around 20 mph in the afternoon. .Forecast days 3 through 7...... .FRIDAY...Mostly clear. Lows 48 to 55. Highs 76 to 83. North winds 5 to 10 mph with gusts to around 20 mph. .SATURDAY...Clear. Lows 47 to 54. Highs 77 to 84. North winds 10 to 15 mph with gusts to around 20 mph. .SUNDAY...Partly cloudy. Slight chance of showers and thunderstorms. Lows 49 to 56. Highs 74 to 81. North winds 10 to 15 mph with gusts to around 20 mph. .MONDAY...Mostly cloudy with chance of showers and thunderstorms. Lows in the lower 50s. Highs in the lower 70s. .TUESDAY...Partly cloudy. Chance of showers and slight chance of thunderstorms. Lows in the upper 40s. Highs in the lower 70s. $$ IDZ413-202215- Caribou Range/Caribou NF- 158 AM MDT Wed Aug 20 2025 .Today... * Sky/weather........Mostly sunny then becoming partly cloudy. Slight chance of rain showers through the day. Slight chance of thunderstorms in the afternoon. * Chc of thunder.....20 percent. * Max Temperature....88-95 valleys and 81-88 ridges. 24 hr trend......Little change. * Min Humidity.......14-22 percent. 24 hr trend......5 percent up. * 20ft winds......... Valleys/lwr slopes...Southeast 4 to 6 mph shifting to the west 6 to 9 mph in the afternoon. Ridges/upr slopes....South 4 to 6 mph shifting to the west 5 to 10 mph in the afternoon. Gusts up to 20 mph. * Chc Wetting Rain...0 percent. * Mixing Height......14500-16000 ft AGL. * Transport Winds....Light winds becoming southwest around 15 mph in the afternoon. .TONIGHT... * Sky/weather........Mostly clear. Slight chance of rain showers in the evening. * Chc of thunder.....0 percent. * Min Temperature....55-62. 24 hr trend......2 degrees down. * Max Humidity.......45-53 percent. 24 hr trend......17 percent up. * 20ft winds......... Valleys/lwr slopes...North 4 to 8 mph. Ridges/upr slopes....Northwest 6 to 9 mph with gusts to around 15 mph shifting to the northeast 4 to 5 mph after midnight. * Chc Wetting Rain...0 percent. * Mixing Height......0-1000 ft AGL. * Transport Winds....Northwest around 10 mph. .THURSDAY... * Sky/weather........Partly cloudy. Slight chance of showers and thunderstorms in the afternoon. * Chc of thunder.....10 percent. * Max Temperature....86-93 valleys and 79-86 ridges. 24 hr trend......3 degrees down. * Min Humidity.......14-21 percent. 24 hr trend......Little change. * 20ft winds......... Valleys/lwr slopes...Northwest 4 to 7 mph. Ridges/upr slopes....Northeast 4 to 5 mph shifting to the west 5 to 8 mph with gusts to around 15 mph in the afternoon. * Chc Wetting Rain...0 percent. * Mixing Height......12500-13500 ft AGL. * Transport Winds....Light winds becoming west around 15 mph in the afternoon. .Forecast days 3 through 7...... .FRIDAY...Partly cloudy. Lows 54 to 61. Highs 84 to 91. Northwest winds 5 to 10 mph with gusts to around 20 mph. .SATURDAY...Mostly clear. Lows 53 to 60. Highs 84 to 91. Northeast winds 10 to 15 mph with gusts to around 20 mph. .SUNDAY...Mostly cloudy. Chance of showers and thunderstorms. Lows 54 to 61. Highs 78 to 85. Southeast winds 5 to 10 mph with gusts to around 20 mph. .MONDAY...Mostly cloudy with showers likely and chance of thunderstorms. Lows in the mid 50s. Highs in the upper 70s. .TUESDAY...Mostly cloudy with showers likely and chance of thunderstorms. Lows in the lower 50s. Highs in the lower 70s. $$ .OUTLOOK...Wednesday August 27th through Tuesday September 2nd. Near normal temperatures and above normal precipitation $$