textproduct: Boise
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
LONG TERM...Friday through Tuesday
An upper-level shortwave trough and associated cold front will begin to move through the area Friday morning. Precipitation chances will be highest in higher elevations (30-60% chance) but still mentionable for lower elevations/valleys (10-30 chance) Friday morning to late Friday night. Snow levels Friday will stay around 4000-5000 feet MSL, but gradually lower with more cold air advection to 2500-3500 feet MSL Saturday. Upper-level flow behind this shortwave from Friday will be north/northwesterly, with another shortwave passage and associated cold front Saturday afternoon into evening. Precipitation chances return for higher elevations with this passage (15-25% chance), and snow levels will also further lower to 2000-3000 feet MSL Sunday. Continued north/northwesterly flow aloft will follow late Sunday into Monday. Beginning Monday, a potent upper-level high pressure system well off the coast of the western U.S. will begin to impact the area, raising temperatures and bring clearer skies. This will be brief, however, as another upper-level shortwave trough will move through the area midday Tuesday, bringing precipitation chances yet again. The current forecasted snow levels during this time only partially rise Monday despite the warming, being 2500-4000 ft MSL by the time precipitation comes around Tuesday. Temperatures will be near normal through the period, with wind gusts low despite many cold frontal passages.
BOI WATCHES/WARNINGS/ADVISORIES
ID...None. OR...None.
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