This alert expired on 1 June 2026 at 20:15 UTC. It is kept here as a record.
It is the 2nd strongest of the 25 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 1 at 3:11PM EDT until June 1 at 4:15PM EDT by NWS Greenville-Spartanburg SC
An estimated 63,546 people live within 50 km of this point.
Nearby, since 16 March 2026
- August 11, 2026 · score 39 · 5.8 km
- July 10, 2026 · score 39 · 15.8 km
- May 26, 2026 · score 43 · 23.4 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 out of 100, at 80 % 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) | 39 / 100 |
| Our confidence | 80% |
| Coordinates | 34.5947, -82.9559 |
| Nearest City | Clemson (14 km) |
| Population Exposed | 63.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-01T19:11:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.c4321eaaaa40f69cbdbbb7e6bc6178e3 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Hart, GA; Anderson, SC; Oconee, SC; Oconee, SC |
| Headline | Severe Thunderstorm Warning issued June 1 at 3:11PM EDT until June 1 at 4:15PM EDT by NWS Greenville-Spartanburg SC |
| Expires | 2026-06-01T16:15:00-04:00 |
| SenderName | NWS Greenville-Spartanburg SC |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.c4321eaaaa40f69cbdbbb7e6bc6178e3183c9db6.001.1","noaa_urn:oid:2.49.0.1.840.0.402be070330c7827bdb685473b45d6f028e16a2e.002.1"] |
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 39/100, near Clemson (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.