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Forecast Discussion for Boise, ID
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636 FXUS65 KBOI 152058 AFDBOI Area Forecast Discussion National Weather Service Boise ID 258 PM MDT Tue Jul 15 2025 .SHORT TERM...Tonight through Thursday night...An upper level trough continues to move south along Western MT into NW Wyoming tonight. Drier air is moving into the area, keeping the threat of thunderstorms mainly across the central ID mountains this afternoon and southern Twin Falls County and areas east. As this system moves southeast, the threat of storms will also move southeast, ending the threat of storms tonight. Main threats with the storms will be wind gusts up to 45 mph and areas of blowing dust this afternoon and evening. The best dynamics will generally be over SE Idaho this afternoon and evening. Dry and breezy conditions expected on Wednesday with steady temperatures. Slightly warmer conditions on Thursday with temperatures in the lowest valleys up near 100F again. A slight chance of thunderstorms in central OR west of Harney County and southern Idaho along the NV border Thursday afternoon. .LONG TERM...Friday through Tuesday...Models are hinting at a shortwave moving over the area Friday morning into Friday afternoon, but the ensemble guidance and current forecast is dry and hot, with temperatures around 3-5 degrees above normal. Valley temperatures remain up near 100F on Friday and Saturday. A trough over British Columbia will bring northwest flow and will lower temperatures a few degrees with breezy conditions Sunday through Tuesday. && .AVIATION...Mainly VFR. Smoke aloft, VFR surface haze at KBNO Wednesday morning possible. Isolated showers and thunderstorms east of KMYL and south of KTWF this afternoon/evening. Any storms may produce gusts to 40 kt, but are unlikely to impact terminals. Surface winds: 10-20 kt with gusts 20-30 kt this afternoon. Winds aloft at 10kft MSL: W 15-30 kt. KBOI...VFR and mostly clear, minimal smoke aloft. Surface winds: 10- 15 kt with gusts up to 25 kt this afternoon. && .BOI WATCHES/WARNINGS/ADVISORIES... ID...None. OR...None. && $$ www.weather.gov/Boise Interact with us via social media: www.facebook.com/NWSBoise www.x.com/NWSBoise SHORT TERM...KA LONG TERM....KA AVIATION.....JM |
Previous Forecast Discussions may be found at
NWS Boise, ID (BOI) Office Forecast Discussions.
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