Right now
The most recent data we hold from NOAA arrived 2 minutes ago, and this point is in it.
2 other detections within 20 km in the last 24 hours, the nearest 5 km from here.
This alert expired on 11 September 2026 at 22:30 UTC. It is kept here as a record.
It is the 20th strongest of the 144 detections recorded within 20 km of this point since 13 March 2026. Another comparable one was recorded here earlier the same day. 109 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 11 at 6:23PM EDT until September 11 at 6:30PM EDT by NWS Columbia SC
An estimated 214,909 people live within 50 km of this point.
Nearby, since 13 March 2026
- September 11, 2026 · score 37 · 6.3 km
- September 6, 2026 · score 37 · 10.9 km
- August 10, 2026 · score 43 · 11.1 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 37 out of 100, at 85 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 37 / 100 |
| Our confidence | 85% |
| Coordinates | 34.2250, -80.8150 |
| Nearest City | Columbia (32 km) |
| Population Exposed | 214.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-11T22:23:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.04bbee144e63425147057366ad40a2af86fc7f66.002.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Fairfield, SC; Kershaw, SC; Richland, SC |
| Headline | Severe Thunderstorm Warning issued September 11 at 6:23PM EDT until September 11 at 6:30PM EDT by NWS Columbia SC |
| Expires | 2026-09-11T18:30:00-04:00 |
| SenderName | NWS Columbia SC |
| HasExactCoords | true |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | 1 S Camden |
| Spc County | Kershaw |
| Spc State | SC |
| Spc Comments | CAD report of a tree blocking the roadway in downtown Camden near the intersection of Broad and Vine Streets. (CAE) |
| MergedSources | [{"id":"spc_wind_34.38_-80.54_4","source":"spc","severity":"medium","severityValue":45,"timestamp":1789161300000,"latitude":34.38,"longitude":-80.54},{"id":"spc_wind_34.42_-80.36_5","source":"spc","severity":"medium","severityValue":45,"timestamp":1789161600000,"latitude":34.42,"longitude":-80.36},{"id":"spc_wind_34.38_-80.54_8","source":"spc","severity":"medium","severityValue":45,"timestamp":1789162080000,"latitude":34.38,"longitude":-80.54},{"id":"spc_wind_34.25_-80.61_9","source":"spc","severity":"medium","severityValue":45,"timestamp":1789162920000,"latitude":34.25,"longitude":-80.61}] |
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.
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