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 22:00 UTC. It is kept here as a record.
No stronger detection stands among the 13 recorded within 20 km of this point since 16 March 2026 — 12 others scored the same. Another comparable one was recorded here earlier the same day. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued May 11 at 4:58PM EDT until May 11 at 6:00PM 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 | 33.3437, -78.2458 |
| Nearest City | North Myrtle Beach (67 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-11T20:58:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.71bb550551e2d1433c57bcd39d7070a2 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Coastal waters from Murrells Inlet to South Santee River SC out 20 NM; Waters from Little River Inlet SC to South Santee River SC from 20 to 60 NM; Coastal waters from Surf City to Cape Fear NC out 20 nm; Coastal waters from Cape Fear NC to Little River Inlet SC out 20 NM; Coastal waters from Little River Inlet to Murrells Inlet SC out 20 NM; Coastal waters from Murrells Inlet to South Santee River SC out 20 NM; Waters from Little River Inlet SC to South Santee River SC from 20 to 60 NM and 1 more areas |
| Headline | Special Marine Warning issued May 11 at 4:58PM EDT until May 11 at 6:00PM EDT by NWS Wilmington NC |
| Expires | 2026-05-11T18:00:00-04:00 |
| SenderName | NWS Wilmington NC |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.71bb550551e2d1433c57bcd39d7070a21d2acc90.001.1","noaa_urn:oid:2.49.0.1.840.0.29e3efc61a8370999f3e0fc2e55f5cd543bae9eb.001.1","noaa_urn:oid:2.49.0.1.840.0.df9cc78d424cb36127998da297bb70fec8eb8c8c.001.1","noaa_urn:oid:2.49.0.1.840.0.3c59b964bfc3a8a743580f783a4c96e966b1c5b9.002.1"] |
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.
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