Area Forecast Discussion
Issued by NWS Boise, ID
Issued by NWS Boise, ID
352 FXUS65 KBOI 022008 AFDBOI Area Forecast Discussion National Weather Service Boise ID 208 PM MDT Tue Jul 2 2024 .SHORT TERM...Tonight through Thursday night...Forecast still shows dry northwest flow dominating through Thursday night. As a result, temperatures stay a couple degrees below normal Wednesday and warm to normal on Thursday as a ridge begins to build further west. Skies remain mostly sunny with no chance of precipitation. Afternoon winds on Wednesday will be breezy as a shortwave trough passes to our north, enhancing the surface pressure gradient. Gusts that afternoon will be 30-40 mph in parts of the Snake Plain including and to the east of Mountain Home, Fairfield, and Twin Falls. The dry flow bring afternoon RHs to the teens and single digits. While fuels aren`t quite critical in these areas yet, a Red Flag Warning was issued for Wednesday afternoon/evening in coordination with related agencies. While the winds on the 4th of July are well below Red Flag criteria, it`s still worth keeping caution in mind as the very dry conditions continue. .LONG TERM...Friday through Tuesday...The focus of the long term remains on the development of a strong upper ridge over the western CONUS. The warming continues until early next week, when the ridge axis moves overhead and should hold temperatures fairly steady. There`s a 20-40% chance of 100+ degrees on Friday in the lower Snake Plain and parts of SE Oregon while Saturday onwards 100+ degrees becomes much more likely. Afternoon high temps will be 10-15 degrees above normal, and morning lows 5-10 degrees above normal. The slightly lower morning low anomaly is due to very dry conditions through the long term, and with some afternoon breeziness possible we`re keeping an eye on the fire weather set up. && .AVIATION...VFR. High density altitude will become a factor by the weekend into much of next week. Surface winds: variable less than 10 kt overnight becoming N-NW 5-15 kt with gusts to 20 kt. West winds gusting to 25-35 kt after 03/15Z at KTWF/KJER. Winds aloft at 10kft MSL: W-NW 15-30 kt. KBOI...VFR with clear skies. Surface winds SW-W less than 4 kt overnight, becoming NW 7-11 kt by 03/15Z. Gusts to 25 kt possible after 03/17Z. && .BOI WATCHES/WARNINGS/ADVISORIES... ID...Red Flag Warning from noon to 9 PM MDT Wednesday IDZ424-426. OR...None. && $$ www.weather.gov/Boise Interact with us via social media: www.facebook.com/NWSBoise www.twitter.com/NWSBoise SHORT TERM...JM LONG TERM....JM AVIATION.....JR