textproduct: Boise

LONG TERM...Sunday through Thursday

Little update from previous forecasts, a ridge continues to build over the region through the long term. Conditions will be dry with a near zero percent chance for precipitation. The high pressure will support inversion development, keeping air stagnant and making fog and stratus likely each morning. Monday through Tuesday, the storm track north of the area just clips are area enough to bring a 10% chance of precipitation from showers to the far northern reaches of our CWA. The high pressure amplifies to a closed high on Wednesday, then shifts from northern California to the Pacific Northwest coast. This evolution of the high will not only push exacerbate dry and inverted conditions, but will also set up an omega block pattern heading into late next week.

AVIATION

Mainly VFR with isolated MVFR-IFR snow showers lingering in SW ID and over high terrain. Patchy fog and low stratus is possible in sheltered valleys Friday morning, the same time that showers dissipate. Mountains obscured in precipitation and low clouds. Surface winds: W-NW 10-20 kt with gusts to 30 kt except NW 15-25 kt with gusts 30-40 kt in Magic Valley. Winds aloft at 10kft MSL: N-NW 20-35 kt.

KBOI...VFR with lower clouds near the foothills. A 10% chance of light snow showers this afternoon, unlikely to drop below VFR. Surface winds W-NW 10-15 kt with gusts to 25 kt.

Weekend Outlook...Mostly VFR with clear skies on Saturday and increasing clouds on Sunday. Localized LIFR-IFR conditions in patchy morning fog in sheltered valleys on Saturday. Generally variable surface winds less than 10 kt.

BOI WATCHES/WARNINGS/ADVISORIES

ID...None. OR...None.