Large hail fell near Judkins.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS PIH wrote it up.
Large hail fell near Judkins.
The local office's own words before the first event, 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 the first event at May 26, 12:57 PM MST, 1 hour 13 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service Pocatello ID 157 PM MDT Tue May 26 2026 .KEY MESSAGES... - Expecting mainly dry conditions Wednesday and Thursday with only slight chances of convection with much more widespread storms Saturday and Sunday, especially on Saturday as much cooler conditions move in over the weekend. && .DISCUSSION... Issued at 134 PM MDT Tue May 26 2026 Upper low continued to drop south into central California and Nevada. A weak upper wave has pushed north today through eastern Idaho and had some widespread stratiform rain this morning in many areas with isolated to scattered thunderstorms expected later this afternoon and early evening. Thunderstorm and shower coverage will be much less as moisture sets up closer to the closed low in California Wednesday and Thursday but at least isolated convection is possible. Expect coverage to become much more widespread Friday and Saturday as closed low opens up and upper trof moves through Idaho with surface front. Saturday looks to be the wettest day in the forecast period. After the rain cooled conditions today expect much warmer conditions Wednesday with high temperatures back into the 80s low elevations and 70s mountains continuing into Thursday and Friday. By Saturday highs down to the 50s to lower 60s mountains and 60s valleys with rain expected. A warming trend will return early next week Monday into Tuesday with above normal temperatures once again. Will have breezy southerly to southeast winds in the southern mountains Wednesday with 15 to 25 mph and gusts up to 35 mph. && .AVIATION /18Z TAFS THROUGH 18Z WEDNESDAY/... Issued at 1134 AM MDT Tue May 26 2026 Showers have been around all morning, and the overcast skies have prevented a trigger for the TSRA in most places. However, this cover is expected to thin and TSRA are expected at PROB30 or better during the afternoon for the five airdromes. Wind appears stronger than yesterday, with KDIJ falling into the marginal severe forecast area this Day 1 from SPC, so it has the strongest expected outflow. Other than the windshear and lightning, impacts should not affect VSBY or CIG significantly. TSRA should end by 27/02Z all locations, with SHRA extending through at least 27/06Z. Skies should partially clear after 27/08Z leaving little chance for precipitation. The risk of severe strength TSRA is over on Wed, and TSRA risk is generally lower Wed afternoon as well. Wind is a little more difficult to forecast, outside of the variable with G35KT at the 4 western airports, while KDIJ has the potential for G45KT. Outside of the SHRA/TSRA causing havoc with wind direction, wind is expected to stay elevated and southeast to south for KSUN after only a short time in the middle of the night of northwest. An approaching trough that will trigger the TSRA/SHRA for Wed will bring with it moderate to strong southeast to south wind, affecting the airports from west to east as it progresses through. && .FIRE WEATHER... Issued at 216 AM MDT Tue May 26 2026 Expect a mix of wet and dry thunderstorms today with isolated to scattered coverage. Brief heavy downpours are possible within the main rain core but fire starts from lighting are possible on the outskirts of the thunderstorms. Gusty, erratic outflow winds are once again likely today. Isolated to scattered thunderstorms will remain possible through the rest of the week, but storms should return to the dry variety. && .PIH WATCHES/WARNINGS/ADVISORIES... None. && DISCUSSION...GK AVIATION...Messick FIRE WEATHER...13
Special Weather Statement
National Weather Service Pocatello ID
249 PM MDT Tue May 26 2026
IDZ053-064>066-262115-
Centennial Mountains/Island Park ID-Big Hole Mountains ID-
Upper Snake River Plain ID-Teton Valley ID-
249 PM MDT Tue May 26 2026
...STRONG THUNDERSTORMS WILL IMPACT TETON...SOUTHEASTERN FREMONT...
NORTHEASTERN BONNEVILLE AND EASTERN MADISON COUNTIES THROUGH 315 PM
MDT...
At 248 PM MDT, Doppler radar was tracking a cluster of strong
thunderstorms over Tetonia, or near Driggs, moving northwest at 30
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...
Driggs, Felt, Tetonia, Drummond, Tetonia Research Station, and Green
Canyon Hot Springs.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4362 11141 4396 11164 4412 11108 4389 11105
4372 11104
TIME...MOT...LOC 2048Z 166DEG 26KT 4379 11117
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...45 MPH
AMMThe Pocatello radar (KSFX), 155 km away, was scanning. The volume nearest the first event began at 21:09 UTC.
1 hail. Local standard time, as filed.
Half dollar to ping pong sized hail fell near Beaver and Wolverine Way in Tetonia. A broken skylight and windshield reported.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2026Every state in 2026This day in weather historyWarnings in Idaho, May 2026
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1343835.