151
FXUS65 KBOI 190912
AFDBOI

Area Forecast Discussion
National Weather Service Boise ID
312 AM MDT Wed Jun 19 2024

.SHORT TERM...Today through Friday night...The warming trend
will persist in the short term under a weakening upper-level
trough. Clear skies will contribute to a temperature increase of
about 10 degrees today, bringing temperatures just above the
seasonal average. On Thursday, temperatures will rise by another
7-9 degrees ahead of a weak trough expected to pass through
Thursday night into Friday. This weak system moving to the north
will moderate Friday`s warming, resulting in valley
temperatures in the low to mid-90s. Limited moisture will likely
prevent showers or thunderstorms, but it could be sufficient
for scattered cumulus cloud development on Friday afternoon.

.LONG TERM...Saturday through Wednesday...This weekend will be
hot thanks to building heights and southwest flow aloft, with a
few 100 degree highs in the forecast for Saturday and Sunday.
Chances for 100 or higher max temps in the lower Snake Plain
have risen to 25- 50% on Saturday and 35-70% on Sunday, with the
highest chances being in Ontario, along the Snake River, and
the Treasure Valley. An upper low moves slowly to the Washington
coast after Sunday, causing upper level heights to fall
slightly. This will cool us down, with highs in the low 90s
Monday-Wednesday for the Snake Plain. Temps overall will still
be about 5 degrees above normal, however. Even with the
approaching low, the long term remains dry with some afternoon
breeziness in SE Oregon and the Magic Valley.

&&

.AVIATION...VFR and mostly clear. Wednesday afternoon
terrain driven showers may develop in remote regions of Baker County
and the central Idaho mtns, though confidence is very low. Surface
winds: variable less than 10 kt. Winds aloft at 10kft MSL: SW 5-15
kt.

KBOI...VFR and mostly clear. Surface winds SE 4-8 kt this morning
becoming NW 5-9 kt Wednesday afternoon. Winds may be squirrelly
before NW winds prevail.

&&

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

&&

$$

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SHORT TERM...JDS
LONG TERM....JM
AVIATION.....JM