Area Forecast Discussion
Issued by NWS Boise, ID
Issued by NWS Boise, ID
547 FXUS65 KBOI 232016 AFDBOI Area Forecast Discussion National Weather Service Boise ID 216 PM MDT Sun Jun 23 2024 .SHORT TERM...Tonight through Tuesday night... Southwesterly flow will continue today, bringing warm dry air from the southwest into the region. Winds will pick up as a cold front passes over Washington-Northern Idaho later today. Westerly winds will begin to pick up by the late afternoon across much of the region, with sustained speeds being anywhere from 10-25 mph and gusts reaching near 35 mph. Wind speeds might be slightly higher over 5000 feet and on mountain ridges. Above normal temperatures will continue, with Mountain Home, ID and Rome, OR already reaching 90F as of noon MDT. Most locations in the Snake River Valley have at least a 30% chance of reaching 100F by this evening, with peak heating occurring from 4-7pm across much of the area. Temperatures will cool slightly on Monday ahead of another weak ridge building in on Tuesday-Wednesday. Temperatures will fluctuate through the short term to being about 10-20 degrees above normal. Fires in the Owyhee Mountains and near Twin Falls will contribute some patchy smoke and haze this afternoon and evening, especially near Mountain Home, ID and near Silver City, ID. .LONG TERM...Wednesday through Sunday...A trough will begin to move into the Pacific Northwest on Wednesday, bringing cooler air by the evening along with a chance (15-30% chance) of showers and thunderstorms near the NV border and in high terrain across the region early on Wednesday afternoon. Temperatures will dip back down to near normal on Thursday-Friday. Models remain in good agreement about the location of the advancing trough on Thursday. The best chance for precipitation (10-20% chance) looks to remain over the West Central Mountains from Thursday- Friday. Strong winds and low moisture Wednesday into Thursday could lead to fire weather concerns, especially in lower elevations. The trough will push out late Friday, with zonal flow likely taking over and elevating temperatures back up above normal. && .AVIATION...VFR with clear skies. Hot temperatures will bring high density altitudes. Reduced visibilities from smoke near a fire in far SW Idaho. Surface winds: W-SW 5-15 kt with gusts to 25 kt, becoming NW 5-15 kt after 00Z. Winds aloft at 10kft MSL: W-SW 15-30 kt. KBOI...VFR with clear skies. Hot temperatures will bring high density altitudes. Surface winds: NW 5-10 kt. && .BOI WATCHES/WARNINGS/ADVISORIES... ID...None. OR...None. && $$ www.weather.gov/Boise Interact with us via social media: www.facebook.com/NWSBoise www.twitter.com/NWSBoise SHORT TERM...SA LONG TERM....SA AVIATION.....BW