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

Dry conditions continue and persistence was used as the ensemble and NBM guidance was useless. Cooler air aloft will begin to move into the area on Friday which may help to mix out the low clouds and fog, and actually warm up temperatures in the valleys, although forecast confidence is low. A ridge builds into the area again by Tuesday, with warmer air aloft and a temperature inversion strengthening again. With persistence used, temperatures in the valleys remain below normal with above normal temperatures over the mountains.

AVIATION

MVFR-LIFR below 5k-6k feet MSL in the Snake Plain and surrounding basins due to persistent low stratus and fog. Surface winds: variable less than 8 kt. Winds aloft at 10kft MSL: NW 10-20 kt, increasing to NW-N 15-30 kt around Tue/15Z.

KBOI...IFR-LIFR ceilings expected overnight, rising to MVFR-IFR by late Tue morning. Expect occasional snow grains out of the stratus. Surface winds: light and variable overnight, then NW around 5 kt Tue afternoon.

BOI WATCHES/WARNINGS/ADVISORIES

ID...Air Stagnation Advisory until 11 AM MST Thursday IDZ011>014-016-028-033. OR...Air Stagnation Advisory until 11 AM MST /10 AM PST/ Thursday ORZ061>064.

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