textproduct: Boise

LONG TERM...Saturday through Wednesday

The back end of a longwave trough will remain over the area early Saturday, favoring a cooldown into the lower/mid 40s for lower elevations and lower snow levels in the 3000-4000 ft range. Later Saturday and early Sunday will see an embedded shortwave trough briefly dig into the region, favoring the return of a 20-30% chance of precipitation across the area. There are model differences over the magnitude of the moisture advection brought about by this trough. A large scale ridge will build into the area Sunday through Monday, favoring dry conditions but hardly a warming trend, as peak valley temperatures are projected to remain in the lower 40s on both days. The ridging will quickly be broken down by a more potent shortwave trough digging into the area early Tuesday. This fast-moving system will tentatively bring a 30-50% chance of precipitation mainly over higher elevations Tuesday through early Wednesday. Peak lower elevation temperatures are expected to remain in the lower/mid 40s and minimum nighttime temperatures in the upper 20s Tuesday and Wednesday. Relatively low snow levels in the 2000-3000 ft range Tuesday through Wednesday should favor snowfall in the mountains for both days.

AVIATION

Warm front bringing light snow/wintry mix into E-central OR and W-central ID, creating areas of MVFR/IFR overnight into Wednesday morning. After 12Z, precip expected to transition to VFR/MVFR light rain below 4k-5k feet MSL, while expanding south to KBNO-KBOI-KSUN line. Pockets of freezing rain in KBKE and E-Central OR during precip transition. Mountains obscured. Surface winds: mostly variable under 10 kt overnight and Wednesday morning. Winds aloft at 10kft MSL: W to NW 20-35 kt.

KBOI...VFR. A 15% chance of light rain, or light snow/rain mix, between Wed/12Z-18Z. No accumulations expected. Surface winds: light/variable under 6 kt Wed early morning, becoming NW 4-8 kt in the afternoon.

BOI WATCHES/WARNINGS/ADVISORIES

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