This alert expired on 4 September 2026 at 22:15 UTC. It is kept here as a record.
No stronger detection stands among the 52 recorded within 20 km of this point since 2 April 2026 — 11 others scored the same. The last comparable one was on 10 August 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 4 at 5:29PM EDT until September 4 at 6:15PM EDT by NWS Baltimore MD/Washington DC
An estimated 125,443 people live within 50 km of this point.
Nearby, since 2 April 2026
- May 13, 2026 · score 34 · 3.6 km
- June 14, 2026 · score 22 · 11.7 km
- September 5, 2026 · score 37 · 16.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 37 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 v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 37 / 100 |
| Our confidence | 80% |
| Coordinates | 37.6983, -80.0265 |
| Nearest City | Salem (45 km) |
| Population Exposed | 125.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-04T21:29:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.d4b5cd78c02a1cc9da07fc9f7db509c91831c987.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Albemarle, VA; City of Charlottesville, VA; Alleghany, VA; Bath, VA; Botetourt, VA; Craig, VA; Rockbridge, VA; City of Covington, VA; Greenbrier, WV; Fayette, WV and 20 more areas |
| Headline | Severe Thunderstorm Warning issued September 4 at 5:29PM EDT until September 4 at 6:15PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-09-04T18:15:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
| MergedCount | 24 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.d4b5cd78c02a1cc9da07fc9f7db509c91831c987.001.1","noaa_urn:oid:2.49.0.1.840.0.11494aeddf53bfe99de8e7f7d4d2947c3b713397.001.1","noaa_urn:oid:2.49.0.1.840.0.4d8901fd7252cd07fb18fa33042440cb2bdd758b.001.1","noaa_urn:oid:2.49.0.1.840.0.782e57e60d34810c03b94e6cd48bd4d2dbde0a27.001.1","noaa_urn:oid:2.49.0.1.840.0.17105cc5861a31a044d65770c11b7f64e0f16791.001.1","noaa_urn:oid:2.49.0.1.840.0.8fe40b4d29a32895474a1f78a0fbd80ba3822366.002.1","noaa_urn:oid:2.49.0.1.840.0.43ac70e8cca31a803497566b1d90edbb8372fca7.002.1","noaa_urn:oid:2.49.0.1.840.0.a775439d271f473a824865b0c4f6a6b4993cf3f3.001.1","noaa_urn:oid:2.49.0.1.840.0.841b515a7a30ab3cb475c4814d6e637bcdb4057f.001.1","noaa_urn:oid:2.49.0.1.840.0.6b0e5ecd5a1853a1ad012e9cdc6139fe82bd77cb.001.1","noaa_urn:oid:2.49.0.1.840.0.00d76ef578cc99bdd3381f46c023af29e036e7c1.001.1","noaa_urn:oid:2.49.0.1.840.0.3f8b53490b436a71f68783ab4d460576bf9c7e18.002.1","noaa_urn:oid:2.49.0.1.840.0.a730e6c6a17f6adac2de60ee95d44cab4b969a23.002.1","noaa_urn:oid:2.49.0.1.840.0.996a718da4024dcf902189e028a452c1162d98f5.001.1","noaa_urn:oid:2.49.0.1.840.0.2cb36ade6bd711d93b44166fecdad103cda25e07.002.1","noaa_urn:oid:2.49.0.1.840.0.7d088507a5917374efca608cb3c639eb00cfc3ff.001.1","noaa_urn:oid:2.49.0.1.840.0.ce266017735ee7db2ad16483a2c3ab2807f64b8a.001.1","noaa_urn:oid:2.49.0.1.840.0.d4a0e57d5b52421a2dbbf38ab18f3e450d601259.001.1","noaa_urn:oid:2.49.0.1.840.0.9782fffb74df10330871a698aadccfe9da84842d.001.1","noaa_urn:oid:2.49.0.1.840.0.c96876affc572652d08a54eb90f31f6bd198e8b1.002.1","noaa_urn:oid:2.49.0.1.840.0.0c9be4ed278d673f47ffb20d6030a4aab5628444.001.1","noaa_urn:oid:2.49.0.1.840.0.37b431c9cd22b7d562ad486f94a7db8de0114e7d.001.1","noaa_urn:oid:2.49.0.1.840.0.28b31725d1db87dd226dbb5bcdf2b80368463f65.001.1","noaa_urn:oid:2.49.0.1.840.0.1792e1d0cad67b8e58665247dbc322d4b39e113e.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 37/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.