022
FXUS65 KBOI 292028
AFDBOI

Area Forecast Discussion
National Weather Service Boise ID
228 PM MDT Sun Jun 29 2025

.SHORT TERM...Tonight through Tuesday night...An upper level
ridge will strengthen over the area, bringing warmer
temperatures each day through Tuesday. A trough off the CA coast
will bring midlevel moisture along the NV border on Monday
afternoon, with a 10-20 percent chance of thunderstorms along
the NV border. Mid level moisture will continue to track
northward over much of the forecast area by Tuesday with enough
instability for a 10-20 percent chance of thunderstorms over the
mountains. Main threats of the storms will be gusty outflow
winds. Temperatures in the Treasure Valley and Weiser Basin
will be in the low 100s Tuesday afternoon, where a Heat Advisory
remains in effect. Temperatures will be 10-15 degrees above
normal on Tuesday.

.LONG TERM...Wednesday through Sunday...A trough will slowly
track across southern CA on Wednesday and Thursday, keeping a
10-20 percent chance of thunderstorms over the area Wednesday
and Thursday afternoon. Temperatures remain around 10 degrees
above normal. Then a compact system tracks across northern CA
and southern OR into southwest Idaho and southeast OR on Friday,
with a 20-30 percent chance of showers and thunderstorms. This
system will bring cooler temperatures, with temperatures
lowering to near normal and possibly cooler. Forecast
confidence on Saturday and Sunday is low.

&&

.AVIATION...VFR. Mostly clear skies. High density altitude on
Monday due to hot temperatures. Isolated showers and
thunderstorms late Monday afternoon near the NV border with
gusts to 40 kt. Surface winds: W-NW 5-15 kt, becoming variable
12 kt or less this evening. Winds aloft at 10kft MSL: W-NW 10-15
kt, becoming variable 10 kt or less after 00Z/Mon.

KBOI...VFR. Clear skies. High density altitude on Monday due to
hot temperatures. Surface winds: NW 7-12 kt, then variable less
than 8 kt after sunset, then SE 5-9 kt Monday morning.

&&

.BOI WATCHES/WARNINGS/ADVISORIES...
ID...Heat Advisory from 11 AM to 8 PM MDT Tuesday IDZ012-014-033.
OR...Heat Advisory from 11 AM MDT /10 AM PDT/ to 8 PM MDT /7 PM
     PDT/ Tuesday ORZ064.

&&

$$

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SHORT TERM...KA
LONG TERM....KA
AVIATION.....ST