731
FXUS65 KBOI 151555
AFDBOI

Area Forecast Discussion
National Weather Service Boise ID
955 AM MDT Sat Jun 15 2024

.DISCUSSION...Today will be cooler and breezy as an upper level
trough moves by to our north. Highs will be 5-10 degrees below
normal, or in the low to mid 70s in the lower valleys. A strong
pressure gradient will support breezy winds today, with most
areas seeing gusts 20-35 mph. However, stronger gusts 35-45 mph
are expected near Mountain Home east into the Magic Valley and
Camas Prairie. Isolated showers will develop along and north of
a Baker City to McCall line today, closer to the center of the
upper trough. Elsewhere, it should remain dry. Forecast remains
on track and no updates anticipated this morning.

&&

.AVIATION...VFR with mid and high level clouds. Surface winds:
W-NW 5-15 kt increasing to 15-25 kt with gusts to 35 kt by
Sat/18Z. Winds aloft at 10kft MSL: SW-W 15-30 kt.

KBOI...VFR. Surface winds: NW 10-15 kt with gusts to 25 kt.

Sunday Outlook...VFR. Mid and high clouds with a 15-30 percent
chance of rain/snow showers in SE Oregon and w-central Idaho
mountains Sunday night. Snow levels falling to 5500-6500 ft MSL
when precipitation chances increase. Surface winds on W-NW 5-15
kt with afternoon gusts to 15-25 kt.

&&

.PREV DISCUSSION...
SHORT TERM...Today through Monday night...A dry cold front has
moved through the area this morning, with high temperatures
today around 10-15 degrees cooler than yesterday. An
unseasonably cool upper level trough over southwest Canada will
strengthen the pressure gradient today and Sunday, with breezy
northwest winds during the afternoon both days, with local gusts
up to 45 mph. Showers will generally stay north of the area on
Saturday and Sunday. The trough over the Pacific NW will begin
to move southeastward on Sunday night with a chance of showers
(20-50% percent chance) developing along a cold front. The front
will move through on Monday with an additional 3-5 degrees of
cooling. Temperatures will be around 15-20 degrees below normal
Monday, with breezy northwest winds continuing. Snow levels on
Monday will be around 5500 feet in the morning rising to 6500
feet by the afternoon.

LONG TERM...Tuesday through Saturday...As an upper low moves east of
the area, a few weak showers may linger in the West Central Mtns
Tuesday morning. However, the best chance for precipitation will
have passed at that point, and chances of precipitation stay fairly
low throughout the long term. The only exception to this will be
during afternoon convection in the West Central Mountains. A weak
upper trough with its axis just east of the West Coast remains
stalled through the period. The dynamics of the trough and afternoon
heating will create unsettled conditions in the West Central Mtns.
Each afternoon/evening a 10-20% chance of showers and storms exists
in this area. The rest of our CWA will remain mostly dry. The
stalled trough keeps us under consistent southwesterly flow, warming
us from 10 degrees below normal on Tuesday to 10 degrees above
normal on Saturday.

&&

.BOI WATCHES/WARNINGS/ADVISORIES...
ID...None.
OR...None.

&&

$$

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DISCUSSION...ST
AVIATION.....BW
SHORT TERM...KA
LONG TERM....JM