Severe Weather near Farmington
This alert expired on 15 March 2026 at 22:45 UTC. It is kept here as a record.
No stronger detection stands among the 100 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. 11 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued March 15 at 5:35PM CDT until March 15 at 5:45PM CDT by NWS St Louis MO
An estimated 18,181 people live within 50 km of this point.
Nearby, since 15 March 2026
- August 1, 2026 · score 58 · 11.2 km
- March 16, 2026 · score 34 · 18.4 km
- July 4, 2026 · score 34 · 24.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 58 out of 100, at 78 % 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 | 78% |
| Coordinates | 37.7678, -90.2230 |
| Nearest City | Farmington (17 km) |
| Population Exposed | 18.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-15T22:35:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.616694871a57756473bef084363f31d1 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Ste. Genevieve, MO; Monroe, IL; Randolph, IL; St. Clair, IL; Ripley, MO and 3 more areas |
| Headline | Tornado Warning issued March 15 at 5:35PM CDT until March 15 at 5:45PM CDT by NWS St Louis MO |
| Expires | 2026-03-15T17:45:00-05:00 |
| SenderName | NWS St Louis MO |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.616694871a57756473bef084363f31d1983fbc18.002.1","noaa_urn:oid:2.49.0.1.840.0.0455307c36d2d682d313434136d55a208f4b1271.001.1","noaa_urn:oid:2.49.0.1.840.0.89b8e9c1b6db2328f9fcab8b9040b503bf07772c.001.1","noaa_urn:oid:2.49.0.1.840.0.a780ef0e93793e1181084380b247120cc06909e6.001.1","noaa_urn:oid:2.49.0.1.840.0.64cbc6c06135aee64427935e56e768e990abbfe4.001.1","noaa_urn:oid:2.49.0.1.840.0.40d198c431d5cd7741122e1ecaeb5dc527a5b580.001.1"] |
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 near Farmington?
Calamity.live data shows a weather event with CalamityScore 58/100, near Farmington (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.