This alert expired on 1 August 2026 at 19:30 UTC. It is kept here as a record.
It is the 3rd strongest of the 40 detections recorded within 20 km of this point since 12 March 2026. The last comparable one was on 29 July 2026. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 1 at 2:45PM EDT until August 1 at 3:30PM EDT by NWS Columbia SC
An estimated 214,909 people live within 50 km of this point.
Nearby, since 12 March 2026
- March 13, 2026 · score 43 · 2.2 km
- March 12, 2026 · score 43 · 2.2 km
- July 27, 2026 · score 43 · 4.9 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 | 33.7807, -81.0450 |
| Nearest City | West Columbia (23 km) |
| Population Exposed | 214.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-01T18:45:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Calhoun, SC; Lexington, SC; Orangeburg, SC |
| Headline | Severe Thunderstorm Warning issued August 1 at 2:45PM EDT until August 1 at 3:30PM EDT by NWS Columbia SC |
| Expires | 2026-08-01T15:30:00-04:00 |
| SenderName | NWS Columbia 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 West Columbia (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 194 scientific monitoring sources.