Alert archive / Idaho / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 22, NWS Pocatello, ID

June 20, 20264 counties in Idaho

NWS Pocatello, ID issued this severe thunderstorm warning at Jun 20, 2026, 4:08 PM MDT for 4 counties in Idaho. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 20, 2026, 4:08 PM MDT (22:08 UTC)
Expired: Jun 20, 2026, 4:45 PM MDT
In force: 37 min
Issued by: NWS Pocatello, ID
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Bannock County, ID, Caribou County, ID, Franklin County, ID, Oneida County, ID

The radar

The Pocatello radar (KSFX), 90 km from the middle of the area, began a volume at 22:09 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Pocatello, ID wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 20, 1:51 PM MDT, 2 hours 17 minutes earlier.

Area forecast discussion, Jun 20, 1:51 PM MDT, 2 hours 17 minutes before

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In the hours before

Special weather statement, Jun 20, 3:10 PM MDT, 58 minutes before

Special Weather Statement
National Weather Service Pocatello ID
310 PM MDT Sat Jun 20 2026

IDZ057-059-202145-
Franklin/Eastern Oneida Region ID-Raft River Region ID-
310 PM MDT Sat Jun 20 2026

...STRONG THUNDERSTORMS WILL IMPACT SOUTHWESTERN ONEIDA COUNTY
THROUGH 345 PM MDT...

At 309 PM MDT, Doppler radar was tracking a cluster of strong
thunderstorms 8 miles north of Snowville, moving east at 25 mph.

HAZARD...Wind gusts in excess of 45 mph and nickel size 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...
Holbrook Summit, Holbrook, and Stone.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4219 11286 4232 11249 4200 11239 4200 11281
TIME...MOT...LOC 2109Z 252DEG 20KT 4209 11276

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...45 MPH

AMM

Special weather statement, Jun 20, 3:17 PM MDT, 51 minutes before

Special Weather Statement
National Weather Service Pocatello ID
317 PM MDT Sat Jun 20 2026

IDZ053-066-067-202200-
Centennial Mountains/Island Park ID-Upper Snake River Plain ID-
Beaverhead/Lemhi Highlands ID-
317 PM MDT Sat Jun 20 2026

...A STRONG THUNDERSTORM WILL IMPACT CENTRAL FREMONT AND NORTHEASTERN
CLARK COUNTIES THROUGH 400 PM MDT...

At 317 PM MDT, Doppler radar was tracking a strong thunderstorm over
Idmon, moving northeast at 25 mph.

HAZARD...Wind gusts in excess of 35 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...
Idmon, Henrys Lake, Island Park Village, Shotgun Village, Ponds
Lodge, Macks Inn, Kilgore, Last Chance, Island Park Reservoir,
Sheridan Reservoir, Harriman State Park, Red Rock Pass, Big Springs,
and Raynolds Pass.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4416 11206 4454 11220 4452 11210 4453 11203
      4455 11203 4454 11198 4456 11195 4456 11187
      4451 11181 4456 11168 4454 11147 4459 11152
      4464 11152 4467 11147 4470 11149 4472 11144
      4471 11142 4476 11139 4441 11109 4436 11109
TIME...MOT...LOC 2117Z 240DEG 49KT 4436 11197

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...35 MPH

GK

Special weather statement, Jun 20, 3:36 PM MDT, 32 minutes before

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Special weather statement, Jun 20, 3:56 PM MDT, 12 minutes before

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Special weather statement, Jun 20, 4:00 PM MDT, 8 minutes before

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Local storm report, Jun 20, 4:05 PM MDT, 3 minutes before

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The office that day

Everything else NWS Pocatello, ID issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 20, 2:49 PM MDT	Special Weather Statement	PIH	Oneida	26 min
Jun 20, 3:10 PM MDT	Special Weather Statement	PIH	Oneida	35 min
Jun 20, 3:17 PM MDT	Special Weather Statement	PIH	Fremont	43 min
Jun 20, 3:36 PM MDT	Special Weather Statement	PIH	Oneida	24 min
Jun 20, 3:56 PM MDT	Special Weather Statement	PIH	Oneida	34 min
Jun 20, 4:00 PM MDT	Special Weather Statement	PIH	Fremont	45 min
Jun 20, 4:27 PM MDT	Special Weather Statement	PIH	Franklin	33 min
Jun 20, 4:27 PM MDT	Special Weather Statement	PIH	Oneida	33 min
Jun 20, 4:45 PM MDT	Special Weather Statement	PIH	Bear Lake	45 min
Jun 20, 4:50 PM MDT	Lake Wind Advisory	PIH	Bannock, Bingham, Power	4 hr
Jun 20, 4:53 PM MDT	Special Weather Statement	PIH	Caribou	37 min
Jun 20, 5:10 PM MDT	Special Weather Statement	PIH	Bear Lake	20 min
Jun 20, 5:24 PM MDT	Special Weather Statement	PIH	Bear Lake	36 min

Nearby

Severe Thunderstorm Warnings in Idaho, 2026 Every severe thunderstorm warning in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.