This alert expired on 4 September 2026 at 21:00 UTC. It is kept here as a record.
It is the 12th strongest of the 66 detections recorded within 20 km of this point since 13 May 2026. The last comparable one was on 28 August 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 4 at 4:33PM EDT until September 4 at 5:00PM EDT by NWS Wakefield VA
Nearby, since 13 May 2026
- June 12, 2026 · score 22 · 9.3 km
- July 22, 2026 · score 46 · 11.7 km
- May 27, 2026 · score 22 · 15.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 16 out of 100, at 60 % 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) | 16 / 100 |
| Our confidence | 60% |
| Coordinates | 37.9817, -80.0760 |
| Nearest City | Salem (77 km) |
| Impact Tier | minor |
| Date | 2026-09-04 — time not reported by the source |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.11033a7870d7dbc208a41fa4f2f7b62dfdc45b01.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Louisa, VA; Highland, VA; Fluvanna, VA; Louisa, VA and 16 more areas |
| Headline | Severe Thunderstorm Warning issued September 4 at 4:33PM EDT until September 4 at 5:00PM EDT by NWS Wakefield VA |
| Expires | 2026-09-04T17:00:00-04:00 |
| SenderName | NWS Wakefield VA |
| HasExactCoords | true |
| MergedCount | 19 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.11033a7870d7dbc208a41fa4f2f7b62dfdc45b01.001.1","noaa_urn:oid:2.49.0.1.840.0.b53ebfaa813d3e111f7a58f584f7933ee4235fb4.001.1","noaa_urn:oid:2.49.0.1.840.0.6d179c4fc3f0e98c9faf8b5fed21ee5ccf913efd.001.1","noaa_urn:oid:2.49.0.1.840.0.faf43e4e6a95038854c98695bfc52d14e1be0ef9.001.1","noaa_urn:oid:2.49.0.1.840.0.a1378c7f427d96a45af0f2b65ce77e52da2abe78.001.1","noaa_urn:oid:2.49.0.1.840.0.a943ab978b40a7daf10057e02c036d8e4fcc01cc.001.1","noaa_urn:oid:2.49.0.1.840.0.a0bc87e1c9f97ba8135445f98b7027c3a0eee385.001.1","noaa_urn:oid:2.49.0.1.840.0.e8ef6a6e30837fbf47178926f0349358e83d128f.001.1","noaa_urn:oid:2.49.0.1.840.0.e7cbc438bb57b30a684f1503e3fff8f6ea020698.001.1","noaa_urn:oid:2.49.0.1.840.0.ae25ae5eab49904ae6462a450e6e3ecc1688e425.001.1","noaa_urn:oid:2.49.0.1.840.0.da1fcb54bd9705caff0423db82789ed0f9151f01.001.1","noaa_urn:oid:2.49.0.1.840.0.e89a1c4cdcecb226e23b8ae5b133846f23e55a50.001.1","noaa_urn:oid:2.49.0.1.840.0.cd260441f22025ca4adf8ccc9b80aad536210d79.001.1","noaa_urn:oid:2.49.0.1.840.0.2c15af613d5194263cecda75c509982fa0212e12.001.1","noaa_urn:oid:2.49.0.1.840.0.288a794d021ef02ec28ab5c20431fccf5a8cede2.001.1","noaa_urn:oid:2.49.0.1.840.0.3ac0a013599259deeb9d1af443bed59817222046.002.1","noaa_urn:oid:2.49.0.1.840.0.b8f641aa3b0638f932e6de1eff49f0f2ca0cfdb5.001.1","noaa_urn:oid:2.49.0.1.840.0.9d89659fc6a573e5ad6700e9619ec6d31f8f90c8.001.1","noaa_urn:oid:2.49.0.1.840.0.93f431ab12d70eacf86e6c4021856cf555487b91.001.1"] |
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.
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Calamity.live data shows a weather event with CalamityScore 16/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.