Right now
The most recent data we hold from NOAA arrived 2 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 13 May 2026 at 23:45 UTC. It is kept here as a record.
It is the only one we have recorded within 20 km of this point since 13 May 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 13 at 4:45PM MDT until May 13 at 5:45PM 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 66 % 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 | 66% |
| Coordinates | 44.2837, -110.7249 |
| Nearest City | Rexburg (99 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-13T22:45:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.76ba5e2983540a2209282d68a68a7269 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Teton, WY; Park, WY; Teton, WY |
| Headline | Severe Thunderstorm Warning issued May 13 at 4:45PM MDT until May 13 at 5:45PM MDT by NWS Riverton WY |
| Expires | 2026-05-13T17:45:00-06:00 |
| SenderName | NWS Riverton WY |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.76ba5e2983540a2209282d68a68a7269f74a095b.001.1","noaa_urn:oid:2.49.0.1.840.0.45296afb152363fe3edc57185df8ce5755713076.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 59 |
| Iem Unit | MPH |
| Iem City | 1 NNE Clementsville |
| Iem County | Teton |
| Iem State | ID |
| Iem Wfo | PIH |
| Iem Remark | Mesonet station 2979 D6 Botts ID-33. |
| MergedSources | [{"id":"iem_G_43.880_-111.360_1778702400000","source":"iem","severity":"low","severityValue":25,"timestamp":1778702400000,"latitude":43.88,"longitude":-111.36}] |
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.