736
FXUS65 KBOI 102324
AFDBOI
Area Forecast Discussion
National Weather Service Boise ID
524 PM MDT Tue Mar 10 2026
.UPDATE...Updated aviation discussion.
&&
.KEY MESSAGES...
- Warming trend starts on Wednesday with breezy winds.
- Stronger winds on Thursday. Mountains above 6000 feet will see
heavy, wet snow through Saturday night.
- Gusty winds are expected over much of the region on Saturday,
especially in the Camas Prairie and on ridgetops.
- Near record high temperatures will occur over much of the
region next Monday and Tuesday, with valley highs nearing
80F.
&&
.SHORT TERM /Through Thursday Night/...
Issued 226 PM MDT TUE MAR 10 2026
A strong zonal flow will continue to impact the Pacific
Northwest through the short term. The core of the jet will
remain to our north, allowing for warmer temperatures while
keeping heavier precipitation over e-central Oregon and
mountains north of the Snake Plain in Idaho. After a slightly
calmer day on Wednesday, rain and snow will increase across the
mountains Wednesday night. Snow levels start around mtn valley
floors where minor accumulations are expected through Thursday
morning. McCall has a ~30% chance of seeing more than an inch of
snow through Noon Thursday. By afternoon the warming air mass
will raise snow levels to around 6000 feet. The flow aloft will
transport deeper moisture into our northern mtns. This will
result in 1-1.5" of liquid across the southern Wallowas, and the
W-Central Idaho Mtns and eastern Boise Mtns (roughly NE of a
Featherville-Lowman-Council line). Accumulation of heavy wet
snow will be limited to sites above 6000 feet where totals of
8-12 inches will impact higher passes (Big Creek, Warm Lake,
Banner Summit). Winds will increase on Thursday across higher
open terrain with gusts in the 35-50 mph range. Lower
elevations, including the lower Snake Plain, won`t get quite as
gusty (25-35 mph). Temperatures are above normal Wednesday and
Thursday, more so across southern zones that remain dry through
the period.
&&
.LONG TERM /Friday through Tuesday/...
Issued 226 PM MDT TUE MAR 10 2026
The polar jet will remain over the northern tier of western
CONUS through this weekend, keeping us under strong zonal flow
aloft. This pattern will bring strong winds to the region on
Friday and Saturday, with the Camas Prairie and ridgetops seeing
gusts up to 55 mph. Wind advisories and maybe even a high wind
warning will be needed across much of the southern zones if this
forecast continues through the week. Breezy winds will occur in
the Treasure Valley and Upper Weiser Basin, but those areas
will likely be the most sheltered from the strongest winds.
Heavy moisture will stay to the north, but portions of northern
Valley County and Baker County will see valley rain and mountain
snow through Saturday. High summits and mountain passes could
see moderate accumulations of wet snow, but populated areas
below about 6000 feet will see minor accumulations. Light
mountain showers will likely continue over the West Central and
Boise Mountains through Monday, with dry conditions expected
elsewhere. Temperatures will dip down slightly on Saturday and
Sunday, but a broad high pressure system will build in beginning
early next week. This will bring record high temperatures to
the region, with the Upper Treasure and Magic Valley seeing
highs in the 70s, potentially near 80F (25-40% chance), next
Tuesday.
&&
.AVIATION /00Z Wednesday through Thursday/...
Issued 517 PM MDT TUE MAR 10 2026
Isolated snow showers over high terrain near KBKE-KMYL through
this evening, clearing for a few hours after midnight, before
snow/rain showers return tomorrow morning through the day. Snow
levels rise from valley floors tomorrow morning to 5-6 kft MSL
by the afternoon. Possible mtn valley fog/stratus tonight before
tomorrow`s precipitation. Surface winds: W-NW 5-15 kt, 20-30 kt
gusts this afternoon calming by sunset to SW- NW 5-10 kt. Winds
aloft at 10kft MSL: W-NW 25-35 kt.
KBOI...Low/mid level ceilings with virga and a few flurries,
tapering off this evening. No accumulation is expected. Surface
winds: NW 5-15 kt, becoming SE 5-10 kt tonight.
&&
.BOI WATCHES/WARNINGS/ADVISORIES...
ID...None.
OR...None.
&&
$$
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AVIATION.....JM
SHORT TERM...DG
LONG TERM....SA
