A couple of severe thunderstorms occurred.
Every event with a place to put it. Tap one for its entry below.
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.
A couple of severe thunderstorms occurred.
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 29, 12:34 PM MST, 3 hours 36 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service Pocatello ID 134 PM MDT Fri May 29 2026 .KEY MESSAGES... - Increasing clouds this afternoon with isolated thunderstorms. - Wet weather arrives by Saturday for parts of east Idaho. - Chilly weather over the weekend into early next week. && .DISCUSSION... Issued at 134 PM MDT Fri May 29 2026 Satellite imagery shows two distinct circulations within incoming upper trough - one over SE Oregon and one over central Nevada. Nevada circulation shifts northeast into Utah overnight tonight, with Oregon feature moving into western Idaho/panhandle. High-res models still produce mainly isolated convection late this afternoon into this evening across portions of East Idaho. Main precipitation begins during the overnight across the southeast. Wrap-around moisture shifts ahead of the southern low, ahead of main trough axis during the day Saturday. Heaviest precipitation is still expected to lie along/northeast of a line roughly from Challis/Stanley to Bear Lake. Southwest of that line, tight gradient from wetting rains to nothing is forecast. Higher elevations across the eastern highlands should see the highest rainfall totals, trending highest to the northeast corner, where totals through Sunday could approach or exceed one inch before the trough exits. Temperatures cool into the 60s under the influence of the low for both Saturday and Sunday. Breezy winds are expected, and we may see speeds bump up against the lower thresholds for a LAKE WIND ADVISORY on American Falls Reservoir. Trough axis shifts north into Montana late Sunday into Sunday night, but general troughiness lingers into the early part of the week. Lingering rainfall along the Divide late Sunday dwindles through the night, leaving dry conditions across East Idaho. Temperatures should be at their coolest Sunday night, and there are still expectations for portions of the Snake Plain to flirt with FROST ADVISORY conditions with lows around or just below 36 degrees, but remaining above freezing. Could see a few showers return during the day Monday under the influence of continued broad trough across the PacNW, but most of the region should remain dry. Operational GFS/ECMWF both push a weak shortwave through the flow in the Wednesday/Thursday time frame, but these appear to be outliers compared to most of the ensemble solutions. Current forecast remains dry for most areas at this time. && .AVIATION /18Z TAFS THROUGH 18Z SATURDAY/... Issued at 1145 AM MDT Fri May 29 2026 A low pressure system currently to our south will keep the pattern active throughout the weekend. Have forecast PROB30s for -tsra this afternoon at all sites except for KSUN. The closed low will begin tracking northward early Saturday morning, resulting in precipitation chances increasing from east to west. Showery precipitation overnight will turn more persistent at KPIH, KIDA, and KDIJ as the low works northward and wraparound moisture brings the most organized precipitation to the terminals. The best chances of precipitation will be north and east of KPIH. CIGs and VIS will remain VFR at KBYI and KSUN while CIGs will trend low VFR to MVFR Saturday morning at KPIH, KIDA, and KDIJ. Model guidance suggests VIS impacts down to IFR at KDIJ in moderate to heavy rain during the early morning. Westerly winds will also increase today into Saturday with the strongest gusts peaking at around 30 kts early Saturday at KPIH and KBYI. && .FIRE WEATHER... Issued at 200 AM MDT Fri May 29 2026 An approaching low pressure system will bring increasing clouds this afternoon. This will produce cooler temps and slightly higher humidity this afternoon. A few isolated dry thunderstorms are possible this afternoon and evening. Gusty erratic winds are possible near storms. Much cooler weather with higher humidity is likely for Saturday. Wetting rains are likely for much of Salmon-Challis and East Idaho on Saturday, but not so much for South Idaho. && .PIH WATCHES/WARNINGS/ADVISORIES... None. && DISCUSSION...DMH AVIATION...Cropp FIRE WEATHER...13
The Boise radar (KCBX), 198 km away, was scanning. The volume nearest the first event began at 23:07 UTC.
2 thunderstorm wind. Local standard time, as filed.
A 61 mph thunderstorm wind gust measured at Challis airport ASOS.
Three inch diameter tree branch blown over near Iona.
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: 1343871, 1343878.