This alert expired on 13 August 2026 at 23:37 UTC. It is kept here as a record.
No stronger detection stands among the 61 recorded within 20 km of this point since 12 March 2026 — 22 others scored the same. Another comparable one was recorded here earlier the same day. 31 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 13 at 7:28PM EDT until August 13 at 7:30PM EDT by NWS Columbia SC
An estimated 214,909 people live within 50 km of this point.
Nearby, since 12 March 2026
- July 27, 2026 · score 43 · 9.1 km
- March 13, 2026 · score 43 · 11.1 km
- August 6, 2026 · score 37 · 12.4 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 83 % 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 | 83% |
| Coordinates | 33.9282, -80.9600 |
| Nearest City | Columbia (10 km) |
| Population Exposed | 214.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-13T23:28:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Richland, SC |
| Headline | Severe Thunderstorm Warning issued August 13 at 7:28PM EDT until August 13 at 7:30PM EDT by NWS Columbia SC |
| Expires | 2026-08-13T19:37:00-04:00 |
| SenderName | NWS Columbia SC |
| HasExactCoords | true |
| Iem TypeSummary | D |
| Iem City | 3 E Norway |
| Iem County | Orangeburg |
| Iem State | SC |
| Iem Wfo | CAE |
| Iem Remark | SCDPS website reported a tree in roadway on Bonnette Road near the intersection of Kilgus Street. Time estimated by radar. |
| MergedSources | [{"id":"iem_D_33.450_-81.070_1786658280000","source":"iem","severity":"low","severityValue":25,"timestamp":1786658280000,"latitude":33.45,"longitude":-81.07}] |
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 Columbia (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.