This alert expired on 19 July 2026 at 20:17 UTC. It is kept here as a record.
It is the 4th strongest of the 41 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 30 June 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 19 at 4:08PM EDT until July 19 at 4:15PM EDT by NWS Greenville-Spartanburg SC
An estimated 74,748 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 29, 2026 · score 32 · 9.8 km
- July 29, 2026 · score 37 · 19.9 km
- August 11, 2026 · score 39 · 23.3 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.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 39 / 100 |
| Our confidence | 80% |
| Coordinates | 35.3630, -81.9444 |
| Nearest City | Shelby (38 km) |
| Population Exposed | 74.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-19T20:08:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.24117a3b87455df9dc6414e2047fb06d |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Catawba, NC; Henderson, NC; Greenville, SC |
| Headline | Severe Thunderstorm Warning issued July 19 at 4:08PM EDT until July 19 at 4:15PM EDT by NWS Greenville-Spartanburg SC |
| Expires | 2026-07-19T16:17:00-04:00 |
| SenderName | NWS Greenville-Spartanburg SC |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.24117a3b87455df9dc6414e2047fb06dde7dc247.001.1","noaa_urn:oid:2.49.0.1.840.0.d34fc17ef4f44d96e28022b35f3847240faf885f.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 8 March 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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 39/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.