This alert expired on 16 March 2026 at 04:15 UTC. It is kept here as a record.
No stronger detection stands among the 18 recorded within 20 km of this point since 16 March 2026 — one other 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: Severe Thunderstorm Warning issued March 15 at 11:18PM EDT until March 16 at 12:15AM EDT by NWS Charleston SC
An estimated 40,633 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 6, 2026 · score 22 · 11.8 km
- July 7, 2026 · score 32 · 25.1 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 40 out of 100, at 87 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | high |
| Calamity Score (ours) | 40 / 100 |
| Our confidence | 87% |
| Coordinates | 33.2695, -79.6700 |
| Nearest City | Goose Creek (46 km) |
| Population Exposed | 40.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-16T03:18:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.8611804efffdc472e4ddb3489ec345e13ec7d259.002.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Berkeley, SC; Charleston, SC |
| Headline | Severe Thunderstorm Warning issued March 15 at 11:18PM EDT until March 16 at 12:15AM EDT by NWS Charleston SC |
| Expires | 2026-03-16T00:15:00-04:00 |
| SenderName | NWS Charleston SC |
| HasExactCoords | true |
| Spc ReportType | hail |
| Spc Speed | 175 |
| Spc Location | 2 NNW Goose Creek |
| Spc County | Berkeley |
| Spc State | SC |
| Spc Comments | Trained spotter reported at least two golfball sized hail stones. Most of the hail was the size of a quarter. (CHS) |
| Iem TypeSummary | H |
| Iem Magnitude | 0.25 |
| Iem Unit | inch |
| Iem City | 3 N Goose Creek |
| Iem County | Berkeley |
| Iem State | SC |
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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 40/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.