This alert expired on 11 July 2026 at 20:00 UTC. It is kept here as a record.
No stronger detection stands among the 38 recorded within 20 km of this point since 13 March 2026 — 17 others scored the same. The last comparable one was on 7 July 2026. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 11 at 3:04PM EDT until July 11 at 4:00PM EDT by NWS Wilmington NC
An estimated 255,725 people live within 50 km of this point.
Nearby, since 13 March 2026
- May 29, 2026 · score 43 · 5.5 km
- August 27, 2026 · score 43 · 8.4 km
- March 13, 2026 · score 43 · 12.6 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100, at 81 % 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 | 81% |
| Coordinates | 33.8181, -80.8189 |
| Nearest City | Columbia (28 km) |
| Population Exposed | 255.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-11T19:04:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.f24af9f858f50ac3bfbe32caa42f0b64 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Florence, SC; Georgetown, SC; Horry, SC; Marion, SC; Williamsburg, SC; Aiken, SC; Bamberg, SC; Barnwell, SC; Calhoun, SC; Lexington, SC; Orangeburg, SC; Calhoun, SC; Clarendon, SC; Orangeburg, SC; Richland, SC; Sumter, SC and 2 more areas |
| Headline | Severe Thunderstorm Warning issued July 11 at 3:04PM EDT until July 11 at 4:00PM EDT by NWS Wilmington NC |
| Expires | 2026-07-11T16:00:00-04:00 |
| SenderName | NWS Wilmington NC |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.f24af9f858f50ac3bfbe32caa42f0b6458ca94e1.001.1","noaa_urn:oid:2.49.0.1.840.0.018ed80954b22b337b54db43702f112530a9fcac.001.1","noaa_urn:oid:2.49.0.1.840.0.6c05c84d1140eb6e33fdb2475854fa256a452c4c.001.1","noaa_urn:oid:2.49.0.1.840.0.be9475eb6744a57169d26644a859245a367b97e2.002.1","noaa_urn:oid:2.49.0.1.840.0.56284a1b931c992c0faa3db7a6208780de47c04b.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 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.