Area Forecast Discussion
Issued by NWS Boise, ID
Issued by NWS Boise, ID
519 FXUS65 KBOI 080828 AFDBOI Area Forecast Discussion National Weather Service Boise ID 228 AM MDT Wed May 8 2024 .SHORT TERM...Today through Friday night...A large upper level low to our east, combined with ridging off the coast, will give us northerly flow today. There will be enough moisture pushed west by the upper low to keep low PoPs (15-30%) over our eastern fringe, but any precipitation will be light and will end by this evening. Temps will be 5-10 degrees below normal today due to yesterday`s cold front. The ridge off the coast will build inland mostly to our north Thursday and remain in control of our weather through the remainder of the short term period, providing us with mostly dry and progressively warmer weather. There a small chance (15-30%) of showers and thunderstorms in/near Twin Falls County Thursday afternoon as the last of the moisture is pushed south out of the area. High temperatures will be a few degrees above normal Thursday, then 5-10 above normal Friday. Some parts of the lower Treasure Valley will likely (30-80% chance) hit 80 Friday. .LONG TERM...Saturday through Wednesday...The upper ridge will slide over us and then move to our south Saturday into Sunday, allowing weak westerly flow to move back into our area. Monday through Wednesday, our upper flow shifts to northwest. We will remain warm (5-10 degrees above normal) through Tuesday, and most likely still be a little above normal Wednesday. Dry weather is expected, except there is a slight chance of showers in southeast Owyhee and southern Twin Falls counties Monday afternoon. The long term models are in better agreement than we typically see, so this is a relatively high-confidence forecast. && .AVIATION...VFR. Mid and high clouds decreasing through the day. Sfc winds: this morning, NW 5-15 kt most areas, except 10-20 with gusts to 30 kt from east of KMUO through KTWF/KJER. This afternoon, W-N 10-20 kt with gusts to 25 kt, except 15-25 kt with gusts to 35 kt from vicinity KMUO SE to KJER/KTWF. Winds at 10k ft MSL: N 15-30 kt, becoming NE 10-25 kt by 09/00Z. KBOI...VFR with decreasing mid and high clouds. Sfc winds: W-NW 5-15 kt this morning, becoming 10-20 kt with gusts 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.twitter.com/NWSBoise SHORT TERM...SP LONG TERM....SP AVIATION.....SP