This alert expired on 6 August 2026 at 21:15 UTC. It is kept here as a record.
It is the 8th strongest of the 16 detections recorded within 20 km of this point since 18 June 2026. The last comparable one was on 3 August 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 6 at 4:40PM EDT until August 6 at 5:15PM EDT by NWS Columbia SC
Nearby, since 18 June 2026
- August 3, 2026 · score 34 · 14.6 km
- July 7, 2026 · score 39 · 15.0 km
- June 18, 2026 · score 22 · 16.4 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 out of 100, at 61 % 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) | 22 / 100 |
| Our confidence | 61% |
| Coordinates | 34.4887, -80.2223 |
| Nearest City | Florence (53 km) |
| Impact Tier | minor |
| Timestamp | 2026-08-06T20:40:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Chesterfield, SC; Kershaw, SC; Lancaster, SC; Darlington, SC |
| Headline | Severe Thunderstorm Warning issued August 6 at 4:40PM EDT until August 6 at 5:15PM EDT by NWS Columbia SC |
| Expires | 2026-08-06T17:15:00-04:00 |
| SenderName | NWS Columbia SC |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.24f33ff0ef0de79127a651f5d70591ba962e702d.001.1","noaa_urn:oid:2.49.0.1.840.0.833476bc80440a8a63f902d9859a3413e8fb7742.001.1"] |
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 22/100, near Florence (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.