This alert expired on 12 March 2026 at 16:15 UTC. It is kept here as a record.
It is the strongest of the 8 detections recorded within 20 km of this point since 12 March 2026.
What the source measured
NOAA reported: Tornado Warning issued March 12 at 11:40AM EDT until March 12 at 12:15PM EDT by NWS Wilmington NC
An estimated 38,228 people live within 50 km of this point.
Nearby, since 12 March 2026
- July 6, 2026 · score 34 · 10.7 km
- July 5, 2026 · score 39 · 14.2 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.
Event Data
| Type | Severe weather |
| Severity | critical |
| Calamity Score (ours) | 58 / 100 |
| Our confidence | 78% |
| Coordinates | 33.8500, -79.7280 |
| Nearest City | Florence (39 km) |
| Population Exposed | 38.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-12T15:40:00.000Z |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Florence, SC; Marion, SC; Williamsburg, SC |
| Headline | Tornado Warning issued March 12 at 11:40AM EDT until March 12 at 12:15PM EDT by NWS Wilmington NC |
| Expires | 2026-03-12T12:15:00-04:00 |
| SenderName | NWS Wilmington NC |
| HasExactCoords | true |
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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 58/100, near Florence (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 194 scientific monitoring sources.