FXUS65 KBOI 141601
AFDBOI

Area Forecast Discussion
National Weather Service Boise ID
1001 AM MDT Mon Apr 14 2025

.DISCUSSION...A ridge continues to build over the area today,
bringing dry conditions, warmer temperatures and southeast
winds. Temperatures will be around 10 degrees warmer today and
another 5 degrees of warming on Tuesday. Forecast on track with
no updates.

&&

.AVIATION...VFR. Surface winds: Variable up to 10 kt. Winds aloft at
10kft: S-SW 5-15 kt.

KBOI...VFR. Surface winds: SE 8-13 kt.

&&

.PREV DISCUSSION...
SHORT TERM...Today through Wednesday night...A ridge of high
pressure will slowly build through the week, bringing warm
temperatures and dry conditions to the region through Wednesday.
The warmest temperatures will occur on Tuesday as the ridge axis
positions itself over the Intermountain West. Highs in the
Treasure Valley will reach near 80F by Tuesday afternoon.
Temperatures will cool slightly on Wednesday, with an upper
level low digging into the Pacific Northwest by Wednesday
evening. Light showers will begin late Wednesday across higher
terrain, with current forecasted precipitation chances around
20-40%.

LONG TERM...Thursday through Monday... The low pressure system
over the PacNW on Wednesday will then combine with the low off
the coast of Southern California, merging into one larger
trough and allowing for much cooler temperatures on Thursday.
Model runs have steadily weakened this system, with the ECMWF
and Canadian ensembles keeping the low center further east,
effectively lowering precipitation chances. Model precipitable
water values look to be lower than previous forecasts as well,
barely scraping the 50th-60th percentile of normal for this
time of year.

Thursday and Friday still look to bring light rain and snow
showers to higher terrain, but there is better agreement in
limited precipitation over the valleys. The low will then move
to the south of our area, allowing for a ridge to quickly build
back in for the weekend. Sunday sees model disagreement on the
next incoming trough. Some models show limited precip and a
return to more zonal flow, while other runs push much cooler
air into the region with widespread showers.

&&

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

&&

$$

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DISCUSSION...KA
AVIATION.....JM
SHORT TERM...SA
LONG TERM....SA