Severe Thunderstorm Warning 3, NWS Pocatello, ID

Area Forecast Discussion
National Weather Service Pocatello ID
1225 PM MDT Sun Apr 12 2026

.KEY MESSAGES...

- Strong to severe storms again this afternoon with gusts up to
  60 mph and small hail the main threats.

- Mountain snow on and off through Monday with isolated to
  scattered valley rain showers.

- Seasonable temperatures through Wednesday before next system
  arrives bringing more precipitation and even cooler
  temperatures for Thursday and Friday.

&&

.DISCUSSION...
Issued at 1221 PM MDT Sun Apr 12 2026

Another round of showers and thunderstorms is on tap for this
afternoon and evening as the low we've been talking about for
several days now continues to slowly make its way through northern
California/eastern Oregon and into central Idaho. We're already
starting to see things light up on radar this afternoon with very
pulse-y thunderstorms popping up. These storms today will once again
have the potential to produce strong to severe gusts to around 60
mph with small hail as all of Eastern Idaho is highlighted in SPC's
"Marginal" risk today. Surface CAPE isn't quite as strong today,
with the HREF ensemble generally showing ranges from 200-400 J/kg
across the area, but more clearing/heating than what we say
yesterday it will improve overall instability compared to yesterday.
It will also be windy outside of storms, too, with gusts of 35-45
mph for many. The cold front associated with this system will be
through by Monday, so highs on Monday afternoon will be cooler, only
making it into the low to mid 50s for most. We continue to see
showers into Monday, especially in the Central Mountains where snow
levels will fall to near 5000-5500 ft for Monday which means more
mountains snow ahead. Around Stanley, the forecast shows about 1 to
3 inches of snow while Galena Summit looks closer to 2 to 5 inches
of snow from this afternoon to tomorrow night. Snow totals will be a
bit lighter in the Eastern Highlands, less than an inch on Pine
Creek Pass and closer to 2 to 4 inches for Emigration summit.

By Tuesday, this system will be departing and we will get a bit of a
break in the activity, though a few isolated showers could linger in
the Eastern Highlands into the afternoon. As soon as early Wednesday
morning, our next system begins to move into the Central Mountains
and will spread eastward throughout the rest of our CWA during the
day. Wednesday will be a windy day, especially in the upper Snake
River Plain where gusts are already forecast to be pushing 40-45
mph. Thursday will also be breezy with widespread gusts of 30-40
mph. This system looks to bring in decent moisture for everyone and
colder temperatures as highs will go from mid to upper 50s on
Wednesday to low to mid 40s on Thursday. With temperatures dropping
and precipitation continuing, we are expecting more snowfall in the
mid to upper elevations, but there will also be some potential for
light snow down to valley floors early Thursday morning and early
Friday morning. Of course, this is several days away, so we will
watch this closely over the next few days.

&&

.AVIATION /18Z TAFS THROUGH 18Z MONDAY/...
Issued at 1139 AM MDT Sun Apr 12 2026

Another round of convection is expected this afternoon and
evening with PROB30 TSRA at each East Idaho terminal. VFR
conditions continue, though stronger storms could produce
temporary CIG restrictions to MVFR. Storms will be capable of
producing 45-50kt outflow winds once again, but the general wind
pattern will also support wind gusts outside thunderstorm
activity reaching 25-30kts. Expect dry conditions overnight for
BYI, PIH, and IDA, though SHRA/SHSN will be possible late
tonight into Monday morning for SUN and DIJ. Another round of
more consolidated SHRA reaches SUN for Monday afternoon,
spreading east but decreasing in coverage for the remainder of
the terminals.

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
None.

&&

DISCUSSION...AMM
AVIATION...DMH

Special Weather Statement
National Weather Service Pocatello ID
1233 PM MDT Sun Apr 12 2026

IDZ055-056-121900-
Eastern Magic Valley ID-Southern Hills/Albion Mountains ID-
1233 PM MDT Sun Apr 12 2026

...A STRONG THUNDERSTORM WILL IMPACT WEST CENTRAL CASSIA COUNTY
THROUGH 100 PM MDT...

At 1233 PM MDT, Doppler radar was tracking a strong thunderstorm 10
miles east of Rogerson, or 18 miles northeast of Jackpot, moving
northeast at 30 mph.

HAZARD...Wind gusts in excess of 45 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

This storm will remain over mainly rural areas of west central Cassia
County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4242 11429 4242 11413 4236 11400 4210 11428
TIME...MOT...LOC 1833Z 206DEG 25KT 4216 11441

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...45 MPH

DMH

Special Weather Statement
National Weather Service Pocatello ID
1247 PM MDT Sun Apr 12 2026

IDZ058-059-121915-
Franklin/Eastern Oneida Region ID-Marsh and Arbon Highlands ID-
1247 PM MDT Sun Apr 12 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHEASTERN ONEIDA...SOUTH
CENTRAL BANNOCK AND NORTHWESTERN FRANKLIN COUNTIES THROUGH 115 PM
MDT...

At 1247 PM MDT, Doppler radar was tracking a strong thunderstorm 9
miles southwest of Pleasantview, or 14 miles southwest of Malad,
moving northeast at 35 mph.

HAZARD...Wind gusts in excess of 45 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to outdoor objects is
         possible.

Locations impacted include...
Malad, Pleasantview, and Samaria.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4202 11257 4238 11240 4226 11208 4200 11231
      4200 11252
TIME...MOT...LOC 1847Z 207DEG 29KT 4204 11243

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...45 MPH

DMH