This alert expired on 19 June 2026 at 00:00 UTC. It is kept here as a record.
It is the 7th strongest of the 14 detections recorded within 20 km of this point since 18 June 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 18 at 7:09PM EDT until June 18 at 8:00PM EDT by NWS Columbia SC
Nearby, since 18 June 2026
- July 7, 2026 · score 39 · 14.2 km
- July 7, 2026 · score 39 · 15.9 km
- August 6, 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 60 % 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 | 60% |
| Coordinates | 34.3952, -80.3599 |
| Nearest City | Sumter (53 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-18T23:09:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Calhoun, SC; Fairfield, SC; Kershaw, SC; Lexington, SC; Newberry, SC; Orangeburg, SC; Richland, SC; Sumter, SC; Hoke, NC; Moore, NC; Richmond, NC; Scotland, NC |
| Headline | Severe Thunderstorm Warning issued June 18 at 7:09PM EDT until June 18 at 8:00PM EDT by NWS Columbia SC |
| Expires | 2026-06-18T20:00:00-04:00 |
| SenderName | NWS Columbia SC |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.6263796969cc6485a5b4e7c58cc7206bf409b8f7.001.1","noaa_urn:oid:2.49.0.1.840.0.0af25191fd3a5f026e697254c18e7e028b1e0ed3.001.1"] |
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 Sumter (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 194 scientific monitoring sources.