352
FXUS65 KBOI 022008
AFDBOI

Area Forecast Discussion
National Weather Service Boise ID
208 PM MDT Tue Jul 2 2024

.SHORT TERM...Tonight through Thursday night...Forecast still
shows dry northwest flow dominating through Thursday night. As
a result, temperatures stay a couple degrees below normal
Wednesday and warm to normal on Thursday as a ridge begins to
build further west. Skies remain mostly sunny with no chance of
precipitation. Afternoon winds on Wednesday will be breezy as a
shortwave trough passes to our north, enhancing the surface
pressure gradient. Gusts that afternoon will be 30-40 mph in
parts of the Snake Plain including and to the east of Mountain
Home, Fairfield, and Twin Falls. The dry flow bring afternoon
RHs to the teens and single digits. While fuels aren`t quite
critical in these areas yet, a Red Flag Warning was issued for
Wednesday afternoon/evening in coordination with related
agencies. While the winds on the 4th of July are well below Red
Flag criteria, it`s still worth keeping caution in mind as the
very dry conditions continue.

.LONG TERM...Friday through Tuesday...The focus of the long term
remains on the development of a strong upper ridge over the
western CONUS. The warming continues until early next week, when
the ridge axis moves overhead and should hold temperatures
fairly steady. There`s a 20-40% chance of 100+ degrees on
Friday in the lower Snake Plain and parts of SE Oregon while
Saturday onwards 100+ degrees becomes much more likely.
Afternoon high temps will be 10-15 degrees above normal, and
morning lows 5-10 degrees above normal. The slightly lower
morning low anomaly is due to very dry conditions through the
long term, and with some afternoon breeziness possible we`re
keeping an eye on the fire weather set up.

&&

.AVIATION...VFR. High density altitude will become a factor by the
weekend into much of next week. Surface winds: variable less than 10
kt overnight becoming N-NW 5-15 kt with gusts to 20 kt. West winds
gusting to 25-35 kt after 03/15Z at KTWF/KJER. Winds aloft at 10kft
MSL: W-NW 15-30 kt.

KBOI...VFR with clear skies. Surface winds SW-W less than 4 kt
overnight, becoming NW 7-11 kt by 03/15Z. Gusts to 25 kt possible
after 03/17Z.

&&

.BOI WATCHES/WARNINGS/ADVISORIES...
ID...Red Flag Warning from noon to 9 PM MDT Wednesday IDZ424-426.
OR...None.

&&

$$

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SHORT TERM...JM
LONG TERM....JM
AVIATION.....JR