Right now
The most recent data we hold from NOAA arrived 3 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
26 other detections within 20 km in the last 24 hours, the nearest 6 km from here.
This alert expired on 7 August 2026 at 18:30 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 5 July 2026. 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 August 7 at 2:06PM EDT until August 7 at 2:30PM EDT by NWS Columbia SC
An estimated 40,816 people live within 50 km of this point.
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 28 out of 100, at 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 28 / 100 |
| Our confidence | 80% |
| Coordinates | 33.7480, -80.2980 |
| Nearest City | Sumter (20 km) |
| Population Exposed | 40.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-07T18:06:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.90808722c4fde0a10169f232ec925ab094d22cd4.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Clarendon, SC; Sumter, SC |
| Headline | Severe Thunderstorm Warning issued August 7 at 2:06PM EDT until August 7 at 2:30PM EDT by NWS Columbia SC |
| Expires | 2026-08-07T14:30:00-04:00 |
| 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 8 March 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 near Sumter?
Calamity.live data shows a weather event with CalamityScore 28/100, near Sumter (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.