This alert expired on 15 March 2026 at 22:15 UTC. It is kept here as a record.
It is the 15th strongest of the 25 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued March 15 at 5:51PM EDT until March 15 at 6:15PM EDT by NWS Melbourne FL
An estimated 1,251,857 people live within 50 km of this point.
Nearby, since 15 March 2026
- June 14, 2026 · score 46 · 5.3 km
- March 15, 2026 · score 76 · 6.7 km
- May 12, 2026 · score 52 · 6.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 46 out of 100, at 79 % 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) | 46 / 100 |
| Our confidence | 79% |
| Coordinates | 28.8177, -81.3131 |
| Nearest City | Sanford (5 km) |
| Population Exposed | 1.3M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-15T21:51:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.36cbc24ba22f82ba410166ace7b9f8ce1abe4b30.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Seminole, FL; Volusia, FL |
| Headline | Severe Thunderstorm Warning issued March 15 at 5:51PM EDT until March 15 at 6:15PM EDT by NWS Melbourne FL |
| Expires | 2026-03-15T18:15:00-04:00 |
| SenderName | NWS Melbourne FL |
| HasExactCoords | true |
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 near Sanford?
Calamity.live data shows a weather event with CalamityScore 46/100, near Sanford (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.