This alert expired on 7 May 2026 at 20:06 UTC. It is kept here as a record.
It is the 2nd strongest of the 37 detections recorded within 20 km of this point since 8 March 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued May 7 at 3:56PM EDT until May 7 at 4:00PM EDT by NWS Charleston SC
An estimated 322,230 people live within 50 km of this point.
Nearby, since 8 March 2026
- March 16, 2026 · score 49 · 2.1 km
- August 3, 2026 · score 43 · 5.1 km
- July 25, 2026 · score 43 · 6.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100, at 81 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 81% |
| Coordinates | 32.8820, -79.4713 |
| Nearest City | Mount Pleasant (38 km) |
| Population Exposed | 322.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-07T19:56:00.000Z |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Coastal waters from South Santee River to Edisto Beach SC out 20 NM |
| Headline | Special Marine Warning issued May 7 at 3:56PM EDT until May 7 at 4:00PM EDT by NWS Charleston SC |
| Expires | 2026-05-07T16:06:00-04:00 |
| SenderName | NWS Charleston SC |
| 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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 43/100, near Mount Pleasant (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 194 scientific monitoring sources.