This alert expired on 10 July 2026 at 23:00 UTC. It is kept here as a record.
No stronger detection stands among the 60 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. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 10 at 6:13PM EDT until July 10 at 7:00PM EDT by NWS Jacksonville FL
An estimated 1,318,955 people live within 50 km of this point.
Nearby, since 15 March 2026
- July 27, 2026 · score 37 · 9.0 km
- June 25, 2026 · score 52 · 11.4 km
- August 12, 2026 · score 43 · 12.2 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 | 29.9293, -81.4579 |
| Nearest City | St. Johns (19 km) |
| Population Exposed | 1.3M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-10T22:13:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.af4046f79f8bafc29ac2c9852532b667 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Duval, FL; St. Johns, FL; Putnam, FL; St. Johns, FL |
| Headline | Severe Thunderstorm Warning issued July 10 at 6:13PM EDT until July 10 at 7:00PM EDT by NWS Jacksonville FL |
| Expires | 2026-07-10T19:00:00-04:00 |
| SenderName | NWS Jacksonville FL |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.af4046f79f8bafc29ac2c9852532b667251bd440.001.1","noaa_urn:oid:2.49.0.1.840.0.5661735ffef7196daa37ac3f12009f88e2268935.001.1"] |
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 St. Johns?
Calamity.live data shows a weather event with CalamityScore 52/100, near St. Johns (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 187 scientific monitoring sources.