This alert expired on 15 March 2026 at 21:45 UTC. It is kept here as a record.
It is the 2nd strongest of the 29 detections recorded within 20 km of this point since 15 March 2026. 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: Tornado Warning issued March 15 at 4:21PM CDT until March 15 at 4:45PM CDT by NWS St Louis MO
Nearby, since 15 March 2026
- March 15, 2026 · score 58 · 2.2 km
- July 11, 2026 · score 22 · 10.1 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 46 out of 100, at 67 % 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 | Critical |
| Calamity Score (ours) | 46 / 100 |
| Our confidence | 67% |
| Coordinates | 37.7361, -91.2500 |
| Nearest City | Rolla (51 km) |
| Impact Tier | minor |
| Timestamp | 2026-03-15T21:21:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado-Warning_noaa_urn-oid-2_49_0_1_840_0_2f9065b4d97ef0db79a722c76d17ed5d |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Jersey, IL; Dent, MO; Shannon, MO; Shannon, MO; Texas, MO |
| Headline | Tornado Warning issued March 15 at 4:21PM CDT until March 15 at 4:45PM CDT by NWS St Louis MO |
| Expires | 2026-03-15T16:45:00-05:00 |
| SenderName | NWS St Louis MO |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.2f9065b4d97ef0db79a722c76d17ed5dddd54a09.002.1","noaa_urn:oid:2.49.0.1.840.0.80a24a5cc59e7b1fc14bc7743dd36d9d7946bc74.001.1","noaa_urn:oid:2.49.0.1.840.0.658e815ed689edfce4b8e78958a0e3358e928756.001.1","noaa_urn:oid:2.49.0.1.840.0.7650a9d4cb2cd74c24edf2387ae427863d19a0fe.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
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
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 46/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.