Right now
The most recent data we hold from NOAA arrived this minute, 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, 26 km from here.
This alert expired on 11 July 2026 at 21:15 UTC. It is kept here as a record.
No stronger detection stands among the 12 recorded within 20 km of this point since 16 March 2026 — 5 others scored the same. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued July 11 at 4:18PM EDT until July 11 at 5:15PM EDT by NWS Wilmington NC
An estimated 66,566 people live within 50 km of this point.
Nearby, since 16 March 2026
- August 12, 2026 · score 39 · 9.5 km
- March 16, 2026 · score 34 · 11.4 km
- July 7, 2026 · score 39 · 18.2 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 out of 100, at 80 % 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) | 39 / 100 |
| Our confidence | 80% |
| Coordinates | 33.6476, -78.5211 |
| Nearest City | North Myrtle Beach (24 km) |
| Population Exposed | 66.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-11T20:18:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.aca50d69c53b17e3b6e2b81aa9cf14f2 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | 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; 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; 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 |
| Headline | Special Marine Warning issued July 11 at 4:18PM EDT until July 11 at 5:15PM EDT by NWS Wilmington NC |
| Expires | 2026-07-11T17:15:00-04:00 |
| SenderName | NWS Wilmington NC |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.aca50d69c53b17e3b6e2b81aa9cf14f2a932dd23.001.1","noaa_urn:oid:2.49.0.1.840.0.ea1f087316230581f81585cc3926780759683af2.001.1","noaa_urn:oid:2.49.0.1.840.0.c9b18f2d21d9e669134e4c4d2080bf8030b9507f.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 near North Myrtle Beach?
Calamity.live data shows a weather event with CalamityScore 39/100, near North Myrtle Beach (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.