This alert expired on 26 May 2026 at 22:15 UTC. It is kept here as a record.
No stronger detection stands among the 6 recorded within 20 km of this point since 16 April 2026 — 2 others scored the same. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 26 at 4:01PM MDT until May 26 at 4:15PM MDT by NWS Riverton WY
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 65 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 22 / 100 |
| Our confidence | 65% |
| Coordinates | 44.3340, -111.0450 |
| Nearest City | Rexburg (82 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-26T22:01:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.6a659d9ea1dff167a496b11b9a257d7b |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Teton, WY; Fremont, ID |
| Headline | Severe Thunderstorm Warning issued May 26 at 4:01PM MDT until May 26 at 4:15PM MDT by NWS Riverton WY |
| Expires | 2026-05-26T16:15:00-06:00 |
| SenderName | NWS Riverton WY |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.6a659d9ea1dff167a496b11b9a257d7b38085389.001.1","noaa_urn:oid:2.49.0.1.840.0.d552b0c21bb695eee3b0244994b6e2821c4752a1.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 0.88 |
| Iem Unit | Inch |
| Iem City | Felt |
| Iem County | Teton |
| Iem State | ID |
| Iem Wfo | PIH |
| Iem Remark | Dime to nickel size hail. |
| MergedSources | [{"id":"iem_H_43.880_-111.180_1779829200000","source":"iem","severity":"low","severityValue":25,"timestamp":1779829200000,"latitude":43.88,"longitude":-111.18}] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.