This alert expired on 30 May 2026 at 18:30 UTC. It is kept here as a record.
It is the 12th strongest of the 17 detections recorded within 20 km of this point since 11 May 2026. The last comparable one was on 11 May 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued May 30 at 1:23PM EDT until May 30 at 2:30PM EDT by NWS Wilmington NC
An estimated 67,357 people live within 50 km of this point.
Nearby, since 11 May 2026
- July 12, 2026 · score 43 · 10.8 km
- July 8, 2026 · score 43 · 15.8 km
- May 30, 2026 · score 37 · 16.3 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.
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) | 32 / 100 |
| Our confidence | 81% |
| Coordinates | 34.3109, -77.3776 |
| Nearest City | Jacksonville (49 km) |
| Population Exposed | 67.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-30T17:23:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.1c402c6ded50869ce47c7d618b970795 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Coastal waters from Surf City to Cape Fear NC out 20 nm; Waters from Surf City NC to Little River Inlet SC from 20 to 60 NM; S of Cape Lookout NC to Surf City NC out to 20 NM; Waters from Cape Lookout to Surf City NC from 20 to 60 NM |
| Headline | Special Marine Warning issued May 30 at 1:23PM EDT until May 30 at 2:30PM EDT by NWS Wilmington NC |
| Expires | 2026-05-30T14:30:00-04:00 |
| SenderName | NWS Wilmington NC |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.1c402c6ded50869ce47c7d618b97079590b343f4.001.1","noaa_urn:oid:2.49.0.1.840.0.77d72114e4de237dd65c128af9a64585990dde9e.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 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 in this area?
Calamity.live data shows a weather event with CalamityScore 32/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.