Right now
The most recent data we hold from NOAA arrived 11 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
One other detection within 20 km in the last 24 hours, 20 km from here.
This alert expired on 16 March 2026 at 18:30 UTC. It is kept here as a record.
It is the 5th strongest of the 52 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued March 16 at 2:11PM EDT until March 16 at 2:30PM EDT by NWS Jacksonville FL
An estimated 147,746 people live within 50 km of this point.
Nearby, since 16 March 2026
- March 16, 2026 · score 43 · 2.5 km
- July 30, 2026 · score 43 · 11.0 km
- March 17, 2026 · score 43 · 13.0 km
How we know
Confirmed by 6 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 87 % 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) | 43 / 100 |
| Our confidence | 87% |
| Coordinates | 29.8429, -81.8457 |
| Nearest City | Fleming Island (30 km) |
| Population Exposed | 147.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-16T18:11:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.b618d405413e2727d12ade6a9f869b18 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Camden, GA; Glynn, GA; Clay, FL; Putnam, FL; St. Johns, FL; Dixie, FL; Lafayette, FL and 1 more areas |
| Headline | Severe Thunderstorm Warning issued March 16 at 2:11PM EDT until March 16 at 2:30PM EDT by NWS Jacksonville FL |
| Expires | 2026-03-16T14:30:00-04:00 |
| SenderName | NWS Jacksonville FL |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b618d405413e2727d12ade6a9f869b1802b577a0.001.1","noaa_urn:oid:2.49.0.1.840.0.618d59244497869c46469c0b635eb5713ac87b85.001.1","noaa_urn:oid:2.49.0.1.840.0.bd3c42f6ca847591579dce8f66cdd1a96b0afded.001.1","noaa_urn:oid:2.49.0.1.840.0.328c68db496587440990fb665a68b6c1aa046208.001.1"] |
| Spc ReportType | wind |
| Spc Speed | 61 |
| Spc Location | 4 NE Orange Park |
| Spc County | Duval |
| Spc State | FL |
| Spc Comments | AWOS station KNIP Jacksonville Nas measured a peak wind speed of 61 mph. (JAX) |
| Iem TypeSummary | H |
| Iem Magnitude | 0.25 |
| Iem Unit | Inch |
| Iem City | 3 NNE Mandarin |
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 Fleming Island?
Calamity.live data shows a weather event with CalamityScore 43/100, near Fleming Island (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.