This alert expired on 10 August 2026 at 19:30 UTC. It is kept here as a record.
No stronger detection stands among the 9 recorded within 20 km of this point since 5 July 2026 — 2 others scored the same. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 10 at 2:45PM EDT until August 10 at 3:30PM EDT by NWS Columbia SC
An estimated 40,816 people live within 50 km of this point.
Nearby, since 5 July 2026
- July 12, 2026 · score 34 · 13.2 km
- July 5, 2026 · score 22 · 13.7 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 34 out of 100, at 86 % 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) | 34 / 100 |
| Our confidence | 86% |
| Coordinates | 33.6279, -80.0551 |
| Nearest City | Sumter (42 km) |
| Population Exposed | 40.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-10T18:45:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Kershaw, SC; Richland, SC; Sumter, SC; Georgetown, SC |
| Headline | Severe Thunderstorm Warning issued August 10 at 2:45PM EDT until August 10 at 3:30PM EDT by NWS Columbia SC |
| Expires | 2026-08-10T15:30:00-04:00 |
| SenderName | NWS Columbia SC |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b488c8d9b8bddf9e7d15014946f655e7fa8b839f.001.1","noaa_urn:oid:2.49.0.1.840.0.9198443c62757db6c9d72fd7a1bcceb107c11f97.001.1"] |
| Iem TypeSummary | D |
| Iem City | 1 NNW Eadytown |
| Iem County | Berkeley |
| Iem State | SC |
| Iem Wfo | CHS |
| Iem Remark | NWS employee reported three trees down around the 1100 block of Wilson Landing Road. |
| MergedSources | [{"id":"iem_D_33.420_-80.150_1786381260000","source":"iem","severity":"low","severityValue":25,"timestamp":1786381260000,"latitude":33.42,"longitude":-80.15}] |
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 34/100, near Sumter (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.