This alert expired on 15 March 2026 at 22:00 UTC. It is kept here as a record.
It is the strongest of the 22 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued March 15 at 4:12PM CDT until March 15 at 5:00PM CDT by NWS Springfield MO
An estimated 20,019 people live within 50 km of this point.
Nearby, since 15 March 2026
- July 11, 2026 · score 22 · 12.3 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 58 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 | Critical |
| Calamity Score (ours) | 58 / 100 |
| Our confidence | 87% |
| Coordinates | 37.7338, -91.2750 |
| Nearest City | Rolla (50 km) |
| Population Exposed | 20.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-15T21:12:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado-Warning_noaa_urn-oid-2_49_0_1_840_0_80a24a5cc59e7b1fc14bc7743dd36d9d |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Dent, MO; Shannon, MO; Calhoun, IL; Jersey, IL; Shannon, MO; Texas, MO |
| Headline | Tornado Warning issued March 15 at 4:12PM CDT until March 15 at 5:00PM CDT by NWS Springfield MO |
| Expires | 2026-03-15T17:00:00-05:00 |
| SenderName | NWS Springfield MO |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.80a24a5cc59e7b1fc14bc7743dd36d9d7946bc74.001.1","noaa_urn:oid:2.49.0.1.840.0.b1feea05842516259e8bda208dc609d1875689ab.002.1","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 58/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.