Area Forecast Discussion
Issued by NWS Boise, ID
Issued by NWS Boise, ID
126 FXUS65 KBOI 030932 CCA AFDBOI Area Forecast Discussion...CORRECTED National Weather Service Boise ID 332 AM MDT Wed Jul 3 2024 .SHORT TERM...Today through Friday night...Dry northwest flow will prevail through the end of the week. A shortwave trough will pass by to our north today. The main impact of this system for our area will be gusty winds across southern Idaho as the surface pressure gradient increases with the passage of the trough. Gusts of 30-40 mph are expected in the Magic Valley and Camas Prairie this afternoon, with 20-30 mph elsewhere. Gusty winds will combine with very dry air to result in critical fire weather conditions across portions of southern Idaho, particularly in the lower elevations where fuels are dry. Otherwise, expect sunny skies and temperatures similar to yesterday, or a couple degrees below normal. A strong upper level ridge along the coast will slowly build inland through Friday. This will bring a continuation of sunny skies and breezy winds for the 4th of July and Friday, although winds will not be as strong as today. Highs will warm several degrees each day, with lower valley highs around 90 on Thursday and the mid to upper 90s on Friday. Dry air and clear skies will allow for cool overnight temperatures. .LONG TERM...Saturday through Wednesday...Confidence remains high that a long-duration heat wave will commence this weekend and persist into next week. An intense high pressure ridge near the west coast gradually moves eastward as the axis reaches our area by the middle of next week for continued dry conditions. High temperatures will likely (> 60 percent chance) exceed 100 degrees in the lower valleys starting on Saturday with temperatures warming a degree or two each day, peaking on next Tuesday or Wednesday as highs likely exceed 105 degrees in some areas, including the Treasure Valley. Some locations may reach or exceed record highs. Fortunately, the air mass will be dry allowing for overnight lows to dip into the 60s providing temporary relief through the early morning hours. && .AVIATION...VFR with clear skies. Surface winds: NW to 10 kt with gusts to 20 kt after 17Z, except 10-20 kt with gusts to 30 kt southeast of KBOI (including KJER/KTWF). Winds aloft at 10kft MSL: NW 15-25 kt. KBOI...VFR with clear skies. Surface winds: variable less than 5 kt becoming NW to around 10 kt with gusts to around 20 kt after 18Z. && .BOI WATCHES/WARNINGS/ADVISORIES... ID...Red Flag Warning from noon today to 9 PM MDT this evening IDZ424-426. OR...None. && $$ www.weather.gov/Boise Interact with us via social media: www.facebook.com/NWSBoise www.twitter.com/NWSBoise SHORT TERM...ST LONG TERM....BW AVIATION.....BW