Spot Forecast
Issued by NWS Boise, ID
Issued by NWS Boise, ID
261 FNUS75 KBOI 171409 FWSBOI Spot Forecast for Crawford RX Patrol Day...USFS National Weather Service Boise ID 809 AM MDT Fri May 17 2024 Forecast is based on ignition time of 0900 MDT on May 17. If conditions become unrepresentative...contact the National Weather Service. ...MUCH COOLER AND WINDIER THIS AFTERNOON AFTER AM COLD FRONTAL FRONTAL PASSAGE... ...BREEZY AND COOL THIS WEEKEND WITH LOW CHANCE OF RAIN ON SUNDAY AFTERNOON... .DISCUSSION... The dry cold frontal passage is currently moving across the region as of 0745L, with terrain delaying some of the stronger winds near the burn area. Westerly winds will pick up in the Long Valley later this morning, with much cooler temperatures and slightly lower afternoon RH values this afternoon. Similar conditions will continue through Saturday, with another cold frontal passage expected on Sunday morning around 0500-0800L. This frontal passage will bring winds 5-10 mph with gusts to 20 mph and a slight chance of rain to the burn area, with current probabilities of at least a trace of rainfall at 25% by Sunday afternoon. Snow levels will be around 5400-5800 feet after the frontal passage on Sunday. .REST OF TODAY... Sky/weather.........Partly cloudy this morning, clearing this afternoon. Max temperature.....55 to 60. Min humidity........22 to 27 percent. CWR /0.10 inch/.....0 percent. LAL.................1. Wind - eye level....West 7 to 10 mph. Gusts up to 20 mph this morning with the frontal passage around 0900L. By the afternoon, expect northwest winds 12 to 18 mph with gusts to 28 mph. Locally higher gusts to 35 mph on ridgetops. Mixing height.......7500 ft AGL. Transport winds.....West around 30 mph. Haines Index........2 very low. Ventilation index...2250 excellent. .TONIGHT... Sky/weather.........Clear. Min temperature.....26 to 31. Max humidity........64 to 74 percent. CWR /0.10 inch/.....0 percent. LAL.................1. Wind - eye level....Northwest 5 to 10 mph with gusts to around 20 mph in the evening, becoming less than 5 mph after midnight. Mixing height.......400 ft AGL. Transport winds.....Southeast around 5 mph. Haines Index........3 very low. Ventilation index...20 poor. .SATURDAY... Sky/weather.........Sunny. Max temperature.....59 to 64. Min humidity........23 to 28 percent. CWR /0.10 inch/.....0 percent. LAL.................1. Wind - eye level....Southwest 5-10 mph in the morning, becoming southwest 10-15 mph with gusts up to 20 mph in the afternoon. Mixing height.......6500 ft AGL. Transport winds.....Southwest around 22 mph. Haines Index........3 very low. Ventilation index...1430 excellent. $$ Forecaster...Adams Requested by...Boise NF-Cascade RD Type of request...PRESCRIBED .TAG 2414502.0/BOI .DELDT 05/17/24 .FormatterVersion 2.0.0 .EMAIL matthew.haupt@usda.gov