Right now
The most recent data we hold from NOAA arrived 7 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 27 May 2026 at 21:15 UTC. It is kept here as a record.
It is the 9th strongest of the 24 detections recorded within 20 km of this point since 30 April 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 27 at 4:53PM EDT until May 27 at 5:15PM EDT by NWS Blacksburg VA
An estimated 42,082 people live within 50 km of this point.
Nearby, since 30 April 2026
- July 22, 2026 · score 58 · 14.4 km
- July 7, 2026 · score 37 · 19.7 km
- August 5, 2026 · score 34 · 22.2 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 34 out of 100, at 79 % 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) | 34 / 100 |
| Our confidence | 79% |
| Coordinates | 36.4904, -78.9707 |
| Nearest City | Danville (40 km) |
| Population Exposed | 42.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-27T20:53:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.b3cd2516f2843ea9f352c0a0e40c9423 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Caswell, NC; Halifax, VA; Caswell, NC; Granville, NC; Person, NC; Vance, NC |
| Headline | Severe Thunderstorm Warning issued May 27 at 4:53PM EDT until May 27 at 5:15PM EDT by NWS Blacksburg VA |
| Expires | 2026-05-27T17:15:00-04:00 |
| SenderName | NWS Blacksburg VA |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b3cd2516f2843ea9f352c0a0e40c94234d4f5d94.002.1","noaa_urn:oid:2.49.0.1.840.0.2964a78aa5bc5a132e69f0322c550a1dd281e380.002.1","noaa_urn:oid:2.49.0.1.840.0.2d5b99aea60427e8008117d70b3168078bbffe7c.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 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.