Right now
The most recent data we hold from NOAA arrived 4 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 22:00 UTC. It is kept here as a record.
No stronger detection stands among the 31 recorded within 20 km of this point since 1 April 2026 — 4 others scored the same. The last comparable one was on 21 May 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 27 at 5:41PM EDT until May 27 at 6:00PM EDT by NWS Blacksburg VA
An estimated 295,694 people live within 50 km of this point.
Nearby, since 1 April 2026
- May 27, 2026 · score 43 · 0.4 km
- September 5, 2026 · score 37 · 4.1 km
- July 18, 2026 · score 43 · 18.4 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 84 % 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) | 43 / 100 |
| Our confidence | 84% |
| Coordinates | 37.3874, -79.5362 |
| Nearest City | West Lynchburg (32 km) |
| Population Exposed | 295.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-27T21:41:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.4f3fdc4e82cb3374cfd97557a950b5a0 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Henry, VA; City of Martinsville, VA; Alleghany, VA; Greenbrier, WV; Fluvanna, VA |
| Headline | Severe Thunderstorm Warning issued May 27 at 5:41PM EDT until May 27 at 6:00PM EDT by NWS Blacksburg VA |
| Expires | 2026-05-27T18:00:00-04:00 |
| SenderName | NWS Blacksburg VA |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.4f3fdc4e82cb3374cfd97557a950b5a09dcc2d3c.002.1","noaa_urn:oid:2.49.0.1.840.0.de4b9a4d98113fef73cbfbc0be4ac97847b523fb.002.1","noaa_urn:oid:2.49.0.1.840.0.67bf8deb372abcdfb15c96f1d8d24c4a8bf77f1d.001.1"] |
| Iem TypeSummary | D |
| Iem City | 2 WNW Ajax |
| Iem County | Pittsylvania |
| Iem State | VA |
| Iem Wfo | RNK |
| Iem Remark | Tree downed by thunderstorm winds near the intersection of Liberty Road and Smith Mountain Road, and blocked the roadway. |
| MergedSources | [{"id":"iem_D_36.980_-79.600_1779905700000","source":"iem","severity":"low","severityValue":25,"timestamp":1779905700000,"latitude":36.98,"longitude":-79.6}] |
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.
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