Several strong spring storms brought some wind gusts, generally under 50 mph and small accumulating hail.
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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.
Several strong spring storms brought some wind gusts, generally under 50 mph and small accumulating hail.
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 Mar 31, 12:57 PM MST, 2 hours 3 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service Pocatello ID 157 PM MDT Mon Mar 31 2025 .KEY MESSAGES... - Moderate snow continues at high elevations through Tuesday afternoon. - Light snow is a threat through Friday afternoon. - Windy conditions for Tuesday and Wednesday, diminished wind Thursday. && .SHORT TERM /THROUGH TUESDAY NIGHT/... Issued at 122 PM MDT Mon Mar 31 2025 ...Updated for thunderstorms... Weather Radar indicates that the next round of showers has started to push into the south central highlands and this should spread northward and eastward to continue low elevation rain and higher elevation snow tonight. Most locations above 6000ft elevation should see moderate snow accumulations tonight if they are in the southeast and northeast highlands, with what is considered light snow continuing in the central Idaho mountains at elevations above 7500ft. The snowfall in the central Idaho mountains looks to be effectively over by the afternoon, so will let the Advisory there continue until the 31/1800MDT finale. The other Winter Weather Advisories continue through tonight and into Tuesday afternoon. Have added two zones that will have moderate snowfall criteria above 6000ft elevation, Zone 58 and 59, which are the highlands surrounding Interstate 15 from Pocatello south to the border. All the other zones in the east/southeast highlands currently under the Winter Weather Advisory continue as well. The unstable atmosphere continue with mainly isolated level of thunderstorms early tonight, with the main focus the southern and eastern highlands. Wind gusts appear to hold under 40 mph, peaking Tue afternoon and strongly decreasing during Tue evening. Since it appears to stay under 40 mmph, believe Wind Advisories are not required at this time. On Tue the high temperatures bottom out for the week, about 8 to 12 deg F below normal for the time of year. Low temperatures are on a slight cooling trend for the next couple of nights as sky cover decreases and colder air settles in tonight. && .LONG TERM /WEDNESDAY THROUGH SUNDAY/... Issued at 122 PM MDT Mon Mar 31 2025 The region will reside under a large upper trough for the first part of the extended period of the forecast. No organized systems appear poised to move through the region but a few waves of embedded vorticity should allow for some rain/snow showers to develop across the region, but shouldn't be anything overly impactful. The bigger issue with the trough in place will be the below normal temperatures for the middle to latter part of the work week with highs mainly from the upper 30s to lower 40s, gradually warming a few degrees each day on Thursday and Friday. By the time we get to Friday, it appears that the trough will give way to upper-level ridging over the Pacific NW which will bring a prolonged period of pleasant weather and a switch from below normal temperatures to above normal ones by early next week. Friday will be the day we begin to transition to a drier pattern but we could still see some lingering high elevation precip. Saturday is when things look to become more pleasant with highs returning well into the 50s throughout our valley locations with 60s becoming more commonplace for the day Sunday. High pressure will keep precip chances at bay and allow for mainly clear skies. This warming trend looks like it'll continue into much of next week with 70s not out of the question for valley locations by the beginning of next week. This may be our first prolonged taste of spring-like weather for eastern Idaho. && .AVIATION /18Z TAFS THROUGH 18Z TUESDAY/... Issued at 1118 AM MDT Mon Mar 31 2025 Widespread cloud cover continues across the region this morning as a storm system moves into the region. SW winds continue to increase at KPIH and KIDA this morning and these stronger winds (15-25kt) will persist for much of the period, becoming more prominent overnight and into the day Tuesday. Light precipitation continues this morning and hi-res models continue to show precip becoming more widespread, and potentially convective, as we move into the afternoon and early evening hours. Have added some TEMPOs for a potentially more pronounced band of showers/storms which could also have gusty winds (30-40kts) with it. Still seeing some location/timing differences amongst the guidance so don't have the highest confidence. It appears that most terminals will see a bit of a precip break after 02-04Z this evening with the main area of focus closer to KDIJ as some wraparound precipitation develops during the overnight and continues into much of the day tomorrow. Some of this could sneak into KIDA around daybreak but confidence here is lower. Outside of showers/thunderstorms, CIGs should remain high enough for low-end VFR to prevail but some MVFR conditions will be possible at times. KDIJ could see more IFR conditions with precip type being mostly snow keeping VSBYs lower. && .PIH WATCHES/WARNINGS/ADVISORIES... Winter Weather Advisory until 6 PM MDT Tuesday for IDZ058-059. Winter Weather Advisory until 6 PM MDT Tuesday for IDZ060-063- 064-066-067. Winter Weather Advisory until 6 PM MDT this evening for IDZ071>074. && SHORT TERM...Messick LONG TERM...McKaughan AVIATION...McKaughan
The Pocatello radar (KSFX), 162 km away, was scanning. The volume nearest the first event began at 22:02 UTC.
1 hail. Local standard time, as filed.
Accumulating pea sized hail leading to multiple vehicle slide offs along highway 20 north of Ashton near Island Park.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2025Every state in 2025This day in weather historyWarnings in Idaho, March 2025
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: 1265279.