This alert expired on 11 August 2026 at 21:00 UTC. It is kept here as a record.
No stronger detection stands among the 19 recorded within 20 km of this point since 24 May 2026 — 2 others scored the same. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 11 at 4:35PM EDT until August 11 at 5:00PM EDT by NWS Columbia SC
An estimated 74,063 people live within 50 km of this point.
Nearby, since 24 May 2026
- August 1, 2026 · score 39 · 6.8 km
- August 2, 2026 · score 16 · 11.6 km
- June 14, 2026 · score 22 · 19.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 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) | 39 / 100 |
| Our confidence | 80% |
| Coordinates | 33.1362, -81.6223 |
| Nearest City | Aiken (48 km) |
| Population Exposed | 74.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-11T20:35:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.2f3bbe2a5e01468bcf42c8225ff81ef1d543bccf.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Burke, GA; Richmond, GA; Aiken, SC; Barnwell, SC |
| Headline | Severe Thunderstorm Warning issued August 11 at 4:35PM EDT until August 11 at 5:00PM EDT by NWS Columbia SC |
| Expires | 2026-08-11T17:00:00-04:00 |
| 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 39/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.