Right now
The most recent data we hold from NOAA arrived 3 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 22:45 UTC. It is kept here as a record.
It is the 9th strongest of the 53 detections recorded within 20 km of this point since 16 March 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 6:18PM EDT until May 27 at 6:45PM EDT by NWS Raleigh NC
Urban PEI: 79,812 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- July 5, 2026 · score 22 · 10.6 km
- June 22, 2026 · score 43 · 11.2 km
- May 26, 2026 · score 22 · 18.6 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 39 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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 |
| Legacy data-support index | 0.90/1 |
| Coordinates | 37.1677, -78.6668 |
| Nearest City | Lynchburg (50 km) |
| Urban exposure index (PEI) | 79.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-27T22:18:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.765a6f356c5f3eeafe4bb154c5ac8980 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-05-27T22:18:00.000Z.
First archived: 2026-05-27T22:19:38.293Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Halifax, NC; Warren, NC; Amherst, VA; Appomattox, VA; Buckingham, VA; Campbell, VA; Alleghany, VA; Amherst, VA; Bedford, VA; Botetourt, VA; Craig, VA; Rockbridge, VA; City of Buena Vista, VA; City of Covington, VA |
| Headline | Severe Thunderstorm Warning issued May 27 at 6:18PM EDT until May 27 at 6:45PM EDT by NWS Raleigh NC |
| Expires | 2026-05-27T18:45:00-04:00 |
| SenderName | NWS Raleigh NC |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.765a6f356c5f3eeafe4bb154c5ac8980b7e377cc.001.1","noaa_urn:oid:2.49.0.1.840.0.3335f72771f92244010e0726982710e49f86ad3d.001.1","noaa_urn:oid:2.49.0.1.840.0.0964e81a84c08fdad2ff1727436944126a8480bc.001.1"] |
| Iem TypeSummary | D |
| Iem City | 3 ENE Crystal Hill |
| Iem County | Halifax |
| Iem State | VA |
| Iem Wfo | RNK |
| Iem Remark | Tree across the road on Newbill School Road. |
| MergedSources | [{"id":"iem_D_36.620_-79.040_1779913560000","source":"iem","severity":"low","severityValue":25,"timestamp":1779913560000,"latitude":36.62,"longitude":-79.04},{"id":"iem_D_36.860_-78.840_1779911460000","source":"iem","severity":"low","severityValue":25,"timestamp":1779911460000,"latitude":36.86,"longitude":-78.84}] |
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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