This alert expired on 17 March 2026 at 01:15 UTC. It is kept here as a record.
It is the 2nd strongest of the 21 detections recorded within 20 km of this point since 17 March 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued March 16 at 8:27PM EDT until March 16 at 9:15PM EDT by NWS Baltimore MD/Washington DC
An estimated 65,642 people live within 50 km of this point.
Nearby, since 17 March 2026
- July 29, 2026 · score 32 · 6.3 km
- June 23, 2026 · score 63 · 27.7 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 78 % 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 | 78% |
| Coordinates | 36.8274, -77.4533 |
| Nearest City | Roanoke Rapids (44 km) |
| Population Exposed | 65.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-17T00:27:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.fc2949a7985dd192a978d5ba27a75fe7 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Charles, MD; Culpeper, VA; Fauquier, VA; King George, VA; Orange, VA; Prince William, VA; Spotsylvania, VA; Stafford, VA; City of Fredericksburg, VA; Caroline, VA; Charles City, VA; Chesterfield, VA; Dinwiddie, VA; Essex, VA; Goochland, VA; Greensville, VA; Hanover, VA; Henrico, VA; James City, VA; King and Queen, VA; King William, VA; Louisa, VA; New Kent, VA; Prince George, VA; Richmond, VA; Surry, VA; Sussex, VA; Westmoreland, VA; York, VA; City of Colonial Heights, VA; City of Emporia, VA; City of Hopewell, VA; City of Petersburg, VA; City of Richmond, VA; City of Williamsburg, VA; Northampton, NC; Amelia, VA; Brunswick, VA; Chesterfield, VA; Dinwiddie, VA; Goochland, VA; Greensville, VA; Hanover, VA; Henrico, VA; Louisa, VA; Nottoway, VA; Powhatan, VA; Sussex, VA; City of Emporia, VA and 3 more areas |
| Headline | Severe Thunderstorm Warning issued March 16 at 8:27PM EDT until March 16 at 9:15PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-03-16T21:15:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.fc2949a7985dd192a978d5ba27a75fe727b72e2b.001.1","noaa_urn:oid:2.49.0.1.840.0.554e2e4f0052cbd81d3dc2d7b5b0914165e6959c.001.1","noaa_urn:oid:2.49.0.1.840.0.949fd143ec2b1f654fe94fd53ca86e6abd9fed4c.002.1","noaa_urn:oid:2.49.0.1.840.0.555d8eeddaff06b0c672c47e64cf9bd77efdcd71.001.1","noaa_urn:oid:2.49.0.1.840.0.c4f1424850bdbd706c5f0d89cae436507497be58.001.1","noaa_urn:oid:2.49.0.1.840.0.116dd14d342d71e7a17cfb5c4c7eb605b8b7c0c8.002.1"] |
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.