This alert expired on 12 July 2026 at 01:00 UTC. It is kept here as a record.
It is the 4th strongest of the 33 detections recorded within 20 km of this point since 12 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: Severe Thunderstorm Watch issued July 11 at 4:06PM EDT until July 11 at 9:00PM EDT by NWS Columbia SC
An estimated 214,909 people live within 50 km of this point.
Nearby, since 12 March 2026
- July 29, 2026 · score 43 · 0.0 km
- July 28, 2026 · score 43 · 0.0 km
- July 13, 2026 · score 43 · 0.0 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 80 % 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 | 80% |
| Coordinates | 33.8000, -81.2000 |
| Nearest City | Lexington (20 km) |
| Population Exposed | 214.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-11T20:06:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Bamberg, SC; Barnwell, SC; Calhoun, SC; Clarendon, SC; Orangeburg, SC; Berkeley, SC; Charleston, SC; Colleton, SC; Dorchester, SC |
| Headline | Severe Thunderstorm Watch issued July 11 at 4:06PM EDT until July 11 at 9:00PM EDT by NWS Columbia SC |
| Expires | 2026-07-11T21:00:00-04:00 |
| SenderName | NWS Columbia SC |
| HasExactCoords | false |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.9350463663774a2576422f0b24727a8329533579.002.1","noaa_urn:oid:2.49.0.1.840.0.3361325d8184b12456db06b0e63deec786add846.001.1"] |
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 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 Lexington (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.