092
FXUS65 KPIH 270007
AFDPIH

Area Forecast Discussion
National Weather Service Pocatello ID
607 PM MDT Sun Apr 26 2026

.KEY MESSAGES...

- Cold overnight lows continue into early in the work week. A
  FREEZE WARNING is in effect for tonight.

- Weak upper level troughing over the northern Rockies will
  interact with moisture moving in from the south to generate
  showers and thunderstorms today.Troughing continues through at
  least Wednesday night.

- Afternoon slight chance risk of thunderstorms occurs every day
  through at least Thursday.

&&

.DISCUSSION...
Issued at 123 PM MDT Sun Apr 26 2026

Water vapor satellite imagery shows complex trough extending
from low in Canada southwest to northern California. Multiple
shortwave features are visible within the larger pattern.
Shortwave moving through East Idaho today producing light
precipitation across the eastern half of the region. Snow levels
are roughly 6500-7000 ft elevation, but the liquid amounts are
light so even at higher elevations, accumulations remain meager.
Next shortwave feature drops through the Idaho panhandle and
Western Montana this afternoon and evening, bringing additional
snow showers to higher elevations. Again, amounts remain light.
Across the Snake Plain, clearing is expected overnight between
shortwave features for another night of cold temperatures. NBM
probabilities support > 80% chance of temperatures at or below
freezing for a significant portion of the Snake Plain. Areas
along the interstate corridor has slightly less chances with
forecast temperatures just above freezing, but still a good
chance for frost overnight. Issued another FREEZE WARNING given
the zone coverages of temperatures at or below 32F.

East Idaho remains under the influence of the broad complex
trough through mid week, with continued unsettled conditions
mainly over higher terrain, and cold temperatures near freezing
for the Snake Plain growing region each night. Models shift the
trough east beginning Thursday, allowing for brief ridge of high
pressure to tilt across the region. Drier conditions redevelop,
along with a more consistent warming trend to finish out the
work week. Next system arrives for the weekend, with a return
to unsettled conditions.

&&

.AVIATION /00Z TAFS THROUGH 00Z TUESDAY/...
Issued at 554 PM MDT Sun Apr 26 2026

Expect overall VFR conditions for all sites through the period.
There are vicinity showers for IDA and DIJ currently. Any
showers on station will likely bring brief MVFR conditions.
Showers will drop off over the next couple of hours. Winds are
slightly breezy with gusts of 15 to 20 kts. Wind gusts will
drop off as well in the next couple of hours. Clouds will
gradually lift overnight into tomorrow afternoon for most TAF
sites. A weak trough will drop down over our northern areas by
tomorrow afternoon and bring a chance of afternoon vicinity
showers for mainly DIJ and, to a lesser degree, IDA. Winds will
be slightly gusty tomorrow afternoon with gusts of 15 to 20kts.

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
Freeze Warning from 3 AM to 10 AM MDT Monday for IDZ051>055.

&&

$$

DISCUSSION...DMH
AVIATION...TW