This alert expired on 11 July 2026 at 17:45 UTC. It is kept here as a record.
No stronger detection stands among the 24 recorded within 20 km of this point since 26 May 2026 — 16 others scored the same. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 11 at 1:31PM EDT until July 11 at 1:45PM EDT by NWS Greenville-Spartanburg SC
An estimated 218,921 people live within 50 km of this point.
Nearby, since 26 May 2026
- July 13, 2026 · score 43 · 10.1 km
- June 27, 2026 · score 43 · 10.5 km
- August 13, 2026 · score 43 · 13.0 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 | 34.6749, -81.9876 |
| Nearest City | Simpsonville (25 km) |
| Population Exposed | 218.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-11T17:31:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Spartanburg, SC; Spartanburg, SC; Union, SC; Laurens, SC; Spartanburg, SC |
| Headline | Severe Thunderstorm Warning issued July 11 at 1:31PM EDT until July 11 at 1:45PM EDT by NWS Greenville-Spartanburg SC |
| Expires | 2026-07-11T13:45:00-04:00 |
| SenderName | NWS Greenville-Spartanburg SC |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.9fc5041bd302f697f655ef6598f5ea2465a68267.002.1","noaa_urn:oid:2.49.0.1.840.0.04a17beb3a744326cdf34153b6c4309439fdefb9.001.1","noaa_urn:oid:2.49.0.1.840.0.cb23ea4da62d27569114e8d54997ece9e538437c.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 Simpsonville (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.