This alert expired on 4 August 2026 at 03:35 UTC. It is kept here as a record.
No stronger detection stands among the 8 recorded within 20 km of this point since 16 March 2026 — 2 others scored the same. 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 August 3 at 11:26PM EDT until August 3 at 11:30PM EDT by NWS Wilmington NC
An estimated 46,614 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 13, 2026 · score 22 · 19.9 km
- March 16, 2026 · score 34 · 20.6 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 34 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) | 34 / 100 |
| Our confidence | 81% |
| Coordinates | 33.4257, -78.4614 |
| Nearest City | North Myrtle Beach (48 km) |
| Population Exposed | 46.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-04T03:26:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.e236481d48a9d7413896e6ed5f71c03eb67b2be7.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Waters from Little River Inlet SC to South Santee River SC from 20 to 60 NM |
| Headline | Special Marine Warning issued August 3 at 11:26PM EDT until August 3 at 11:30PM EDT by NWS Wilmington NC |
| Expires | 2026-08-03T23:35:00-04:00 |
| SenderName | NWS Wilmington NC |
| HasExactCoords | true |
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 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.