Right now
The most recent data we hold from NOAA arrived 4 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 11 May 2026 at 23:15 UTC. It is kept here as a record.
It is one of only 2 we have recorded within 20 km of this point since 11 May 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: Special Marine Warning issued May 11 at 5:21PM EDT until May 11 at 7:15PM EDT by NWS Wilmington NC
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 out of 100, at 61 % 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) | 22 / 100 |
| Our confidence | 61% |
| Coordinates | 33.2430, -77.6974 |
| Nearest City | North Myrtle Beach (111 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-11T21:21:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.7e3fb6686a396e6aabbf1ec6dc018450 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Waters from Surf City NC to Little River Inlet SC from 20 to 60 NM; Waters from Little River Inlet SC to South Santee River SC from 20 to 60 NM; Waters from Surf City NC to Little River Inlet SC from 20 to 60 NM; Waters from Cape Lookout to Surf City NC from 20 to 60 NM and 1 more areas |
| Headline | Special Marine Warning issued May 11 at 5:21PM EDT until May 11 at 7:15PM EDT by NWS Wilmington NC |
| Expires | 2026-05-11T19:15:00-04:00 |
| SenderName | NWS Wilmington NC |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.7e3fb6686a396e6aabbf1ec6dc018450ee2aaf76.001.1","noaa_urn:oid:2.49.0.1.840.0.29956b9bed22e7740952d18ff29c67414f722945.001.1","noaa_urn:oid:2.49.0.1.840.0.2816e45f2a9dd380989efe3fa9eff16d21a5ce22.001.1","noaa_urn:oid:2.49.0.1.840.0.71bb550551e2d1433c57bcd39d7070a21d2acc90.001.1"] |
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 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.