This alert expired on 29 June 2026 at 22:00 UTC. It is kept here as a record.
No stronger detection stands among the 43 recorded within 20 km of this point since 16 March 2026 — 23 others scored the same. Another comparable one was recorded here earlier the same day. 17 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 29 at 5:53PM EDT until June 29 at 6:00PM EDT by NWS Columbia SC
An estimated 216,235 people live within 50 km of this point.
Nearby, since 16 March 2026
- May 26, 2026 · score 43 · 4.7 km
- June 27, 2026 · score 43 · 14.7 km
- July 11, 2026 · score 43 · 16.2 km
How we know
Confirmed by 5 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 90 % 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 | 90% |
| Coordinates | 34.6758, -82.7006 |
| Nearest City | Clemson (13 km) |
| Population Exposed | 216.2K within 50 km |
| Impact Tier | significant |
| Date | 2026-06-29 — time not reported by the source |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.5c6aac3e61c97a74e944481d33e16f20 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Burke, GA; Richmond, GA; Taliaferro, GA; Greenville, SC; Laurens, SC; Spartanburg, SC and 4 more areas |
| Headline | Severe Thunderstorm Warning issued June 29 at 5:53PM EDT until June 29 at 6:00PM EDT by NWS Columbia SC |
| Expires | 2026-06-29T18:00:00-04:00 |
| SenderName | NWS Columbia SC |
| HasExactCoords | true |
| MergedCount | 7 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.5c6aac3e61c97a74e944481d33e16f207670ac30.001.1","noaa_urn:oid:2.49.0.1.840.0.d4d197f82abf766bc045ff260ac65799b61445c6.002.1","noaa_urn:oid:2.49.0.1.840.0.f4b382e6b2dba518ccac1c5e5e803d5683c80308.001.1","noaa_urn:oid:2.49.0.1.840.0.1eeba0d7790a03b03a60be32b4a657367a4f140e.001.1","noaa_urn:oid:2.49.0.1.840.0.4c03b51acaf20ee5a2b03fac2a8d2971e6a9d3a4.001.1","noaa_urn:oid:2.49.0.1.840.0.75172d9f2529f0c293f207d792b782a74a1948c8.001.1","noaa_urn:oid:2.49.0.1.840.0.5a67802f8e71dc142e3ff0e31d85343ab1162963.001.1"] |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | 4 SSW Powdersville |
| Spc County | Anderson |
| Spc State | SC |
| Spc Comments | Power outage caused by trees on powerlines. (GSP) |
| Iem TypeSummary | D |
| Iem City | 2 WNW Easley |
| Iem County | Pickens |
| Iem State | SC |
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 Clemson (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.