This alert expired on 10 July 2026 at 22:00 UTC. It is kept here as a record.
No stronger detection stands among the 33 recorded within 20 km of this point since 16 March 2026 — 10 others scored the same. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 10 at 5:16PM EDT until July 10 at 6:00PM EDT by NWS Jacksonville FL
An estimated 1,236,062 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 19, 2026 · score 52 · 12.3 km
- July 20, 2026 · score 52 · 14.4 km
- July 19, 2026 · score 52 · 14.4 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 out of 100, at 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 52 / 100 |
| Our confidence | 80% |
| Coordinates | 29.9760, -81.6980 |
| Nearest City | Fleming Island (13 km) |
| Population Exposed | 1.2M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-10T21:16:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.a6bad9fd88218784e75f5b820a5401259871ebbb.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Clay, FL; St. Johns, FL |
| Headline | Severe Thunderstorm Warning issued July 10 at 5:16PM EDT until July 10 at 6:00PM EDT by NWS Jacksonville FL |
| Expires | 2026-07-10T18:00:00-04:00 |
| SenderName | NWS Jacksonville 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 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.
Want to know when something happens near Fleming Island?
Calamity.live data shows a weather event with CalamityScore 52/100, near Fleming Island (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.