This alert expired on 20 July 2026 at 20:45 UTC. It is kept here as a record.
It is the 3rd strongest of the 29 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 7 July 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 20 at 4:15PM EDT until July 20 at 4:45PM EDT by NWS Raleigh NC
An estimated 781,678 people live within 50 km of this point.
Nearby, since 16 March 2026
- August 9, 2026 · score 48 · 7.5 km
- August 10, 2026 · score 48 · 10.8 km
- March 16, 2026 · score 72 · 14.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 48 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) | 48 / 100 |
| Our confidence | 80% |
| Coordinates | 36.1500, -79.7257 |
| Nearest City | Greensboro (11 km) |
| Population Exposed | 781.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-20T20:15:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.44b9c543676ea049e584fb4f7b7b3f6990c5d759.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Guilford, NC |
| Headline | Severe Thunderstorm Warning issued July 20 at 4:15PM EDT until July 20 at 4:45PM EDT by NWS Raleigh NC |
| Expires | 2026-07-20T16:45:00-04:00 |
| SenderName | NWS Raleigh NC |
| HasExactCoords | true |
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 near Greensboro?
Calamity.live data shows a weather event with CalamityScore 48/100, near Greensboro (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.