Spot Forecast
Issued by NWS Boise, ID
Issued by NWS Boise, ID
020 FNUS75 KBOI 061755 FWSBOI Spot Forecast for Grand Jean Piles...USFS National Weather Service Boise ID 1155 AM MDT Mon May 6 2024 Forecast is based on ignition time of 1200 MDT on May 06. If conditions become unrepresentative...contact the National Weather Service. ...WET AND COOL TODAY WITH MIXED PRECIPITATION AND ISOLATED THUNDERSTORMS... ...DRY AND WARMING TREND STARTING THURSDAY... .DISCUSSION... A cold front will move through the West Central Mountains later today, bringing colder temperatures, snow/rain showers, and the chance of a thunderstorm (<30% chance) late this afternoon. Snow levels will be right around 5000 feet today, dropping to 3500 feet by midnight tonight, and 4400 feet tomorrow. Wraparound showers from a low pressure system to our east will continue through tonight and tomorrow, bringing light precipitation and breezy northwest winds. A deep upper level ridge will move in late Wednesday, beginning a warming and drying trend through the weekend. Clear conditions with low daytime relative humidities, breezy afternoon easterly winds, and above normal temperatures will dominate the weather Thursday-Sunday. .REST OF TODAY... Sky/weather.........Widespread rain/snow showers, isolated thunderstorms. Chance of precipitation 80 percent. New snow accumulation up to 1 inch. Max temperature.....31 to 42. Min humidity........64 to 74 percent. CWR /0.10 inch/.....60 percent. LAL.................2. Wind - eye level....West 7 to 10 mph with gusts to around 14 mph. Mixing height.......3500 ft AGL. Transport winds.....West around 20 mph. Haines Index........2 very low. Ventilation index...700 excellent. .TONIGHT... Sky/weather.........A slight chance of thunderstorms and rain showers in the evening, then snow showers likely after midnight. Chance of precipitation near 100 percent. Snow accumulation of 1 to 3 inches. Min temperature.....20 to 28. Max humidity........93 to 98 percent. CWR /0.10 inch/.....70 percent. LAL.................2 in the evening, decreasing to 1 after midnight. Wind - eye level....West 4 to 8 mph. Gusts up to 20 mph in the evening, decreasing to 14 mph after midnight. Mixing height.......700 ft AGL. Transport winds.....West around 10 mph. Haines Index........3 very low. Ventilation index...70 poor. .TUESDAY... Sky/weather.........Snow showers. Chance of snow 80 percent. Snow accumulation of 1 to 2 inches. Max temperature.....28 to 38. Min humidity........56 to 63 percent. CWR /0.10 inch/.....50 percent. LAL.................1. Wind - eye level....West 6 to 10 mph. Gusts up to 18 mph in the morning, increasing to 24 mph in the afternoon. Mixing height.......5000 ft AGL. Transport winds.....Northwest around 25 mph. Haines Index........2 very low. Ventilation index...1250 excellent. $$ Forecaster...Adams Requested by...jeff rowett Type of request...PRESCRIBED .TAG 2413270.0/BOI .DELDT 05/06/24 .FormatterVersion 2.0.0 .EMAIL jeffery.rowett@usda.gov