This alert expired on 13 June 2026 at 21:00 UTC. It is kept here as a record.
It is the 17th strongest of the 37 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued June 13 at 3:58PM EDT until June 13 at 5:00PM EDT by NWS Jacksonville FL
An estimated 50,612 people live within 50 km of this point.
Nearby, since 12 March 2026
- March 12, 2026 · score 39 · 4.1 km
- August 12, 2026 · score 39 · 9.2 km
- July 12, 2026 · score 39 · 13.2 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 32 out of 100, at 81 % 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) | 32 / 100 |
| Our confidence | 81% |
| Coordinates | 31.0496, -81.4195 |
| Nearest City | Brunswick (13 km) |
| Population Exposed | 50.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-13T19:58:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.db0b55186acf338413c7d31919028ecd |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM |
| Headline | Special Marine Warning issued June 13 at 3:58PM EDT until June 13 at 5:00PM EDT by NWS Jacksonville FL |
| Expires | 2026-06-13T17:00:00-04:00 |
| SenderName | NWS Jacksonville FL |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.db0b55186acf338413c7d31919028ecdb47ced94.001.1","noaa_urn:oid:2.49.0.1.840.0.3df4c90901713cf217ebdb6f52158e0fb4b50f14.001.1"] |
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 Brunswick?
Calamity.live data shows a weather event with CalamityScore 32/100, near Brunswick (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.