This alert expired on 15 March 2026 at 21:07 UTC. It is kept here as a record.
No stronger detection stands among the 18 recorded within 20 km of this point since 15 March 2026 — 8 others scored the same. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued March 15 at 3:57PM CDT until March 15 at 4:00PM CDT by NWS St Louis MO
An estimated 20,019 people live within 50 km of this point.
Nearby, since 15 March 2026
- May 31, 2026 · score 34 · 5.0 km
- August 1, 2026 · score 28 · 7.9 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 34 out of 100, at 87 % 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) | 34 / 100 |
| Our confidence | 87% |
| Coordinates | 37.9623, -91.3161 |
| Nearest City | Rolla (40 km) |
| Population Exposed | 20.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-15T20:57:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe-Thunderstorm-Warning_noaa_urn-oid-2_49_0_1_840_0_ec1d6ee304574fed47b551f228135e13 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Warren, MO; Greene, IL; Jersey, IL; Crawford, MO; Franklin, MO; Gasconade, MO; Washington, MO and 5 more areas |
| Headline | Severe Thunderstorm Warning issued March 15 at 3:57PM CDT until March 15 at 4:00PM CDT by NWS St Louis MO |
| Expires | 2026-03-15T16:07:00-05:00 |
| SenderName | NWS St Louis MO |
| HasExactCoords | true |
| MergedCount | 8 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.ec1d6ee304574fed47b551f228135e13d83ecadc.001.1","noaa_urn:oid:2.49.0.1.840.0.abe31356f890599129d4d02616dcf5dc8e3e0270.001.1","noaa_urn:oid:2.49.0.1.840.0.7329e4e7a11dc49350dd12ae96d0d962f2219e8a.001.1","noaa_urn:oid:2.49.0.1.840.0.91f7e33bdd8535c00d5346873497617549d2e628.001.1","noaa_urn:oid:2.49.0.1.840.0.ebdf230b059274598bf22efb7d2aa208a0e4dd46.001.1","noaa_urn:oid:2.49.0.1.840.0.acb2b213c5877ec41460fbd39f5a8baf11e9d94b.002.1","noaa_urn:oid:2.49.0.1.840.0.e1588822bff93f47037142439e96572e509a65c0.002.1","noaa_urn:oid:2.49.0.1.840.0.87680e4c56c3b9c286ec56c2c8f93979f59490b1.001.1"] |
| Iem TypeSummary | O |
| Iem City | Belgrade |
| Iem County | Washington |
| Iem State | MO |
| Iem Wfo | LSX |
| Iem Remark | Estimated time of damage between 10:30 and 11:30 a.m., concrete statue of cow blown over and a flag post snapped in half near Belgrade. |
| MergedSources | [{"id":"iem_H_38.060_-91.400_1773607320000","source":"iem","severity":"low","severityValue":25,"timestamp":1773607320000,"latitude":38.06,"longitude":-91.4},{"id":"iem_O_37.790_-90.840_1773590400000","source":"iem","severity":"low","severityValue":25,"timestamp":1773590400000,"latitude":37.79,"longitude":-90.84}] |
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 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.