textproduct: Boise

LONG TERM...Friday through Tuesday

A shortwave trough digging over the Northwest region will steer a cold front across the area Friday. This cold front will bring a gradual cooling trend Friday through the weekend, gradually dropping lower elevation temperatures from the upper 40s/lower 50s Friday into the upper 30s/lower 40s Saturday and Sunday, with higher elevations seeing a drop from the upper 30s into the upper 20s. Snow levels are expected to gradually drop from the 3000-4000 ft range Friday and into the 2000-3000 ft range Saturday through Sunday. Friday will see a 30-40% chance of mixed precipitation over higher elevations. Saturday will see a 20-30% chance of rain over lower elevations and a 30-40% chance of snow over mountains. Sunday will see a weaker shortwave trough dig across the region, but with uncertainty over its digging pattern and moisture content. For now, a 20-30% chance of snow over the mountains is forecast for the early hours of Sunday. Monday through early Tuesday will see broad ridging that will bring drier conditions and a weak warming trend into the lower 40s. Long-term guidances suggest another trough from W'rn British Columbia digging into the area late Tuesday, tentatively returning a cooling trend and widespread precipitation over the area.

AVIATION

VFR. Patchy fog overnight, mainly in sheltered higher valleys. Increasing clouds with snow showers developing over the mountains Tuesday afternoon, and mountains becoming obscured. Surface winds: variable under 10 kt for most areas and SW 10-15 kt in lower Magic Valley, becoming E-SE 5-10kt Tuesday afternoon. Winds aloft at 10kft MSL: W-NW 20-30kt increasing to W-NW 30-40kt by 00z/Wednesday.

KBOI...VFR and mostly clear with few high clouds. Surface winds: SE 5-10kt overnight.

BOI WATCHES/WARNINGS/ADVISORIES

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