This alert expired on 8 August 2026 at 21:05 UTC. It is kept here as a record.
It is the 53rd strongest of the 136 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 12 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 8 at 4:55PM EDT until August 8 at 5:00PM EDT by NWS Baltimore MD/Washington DC
An estimated 645,177 people live within 50 km of this point.
Nearby, since 16 March 2026
- June 26, 2026 · score 48 · 3.1 km
- July 5, 2026 · score 48 · 9.8 km
- June 14, 2026 · score 48 · 11.2 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 48 out of 100, at 84 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 48 / 100 |
| Our confidence | 84% |
| Coordinates | 38.3734, -77.2822 |
| Nearest City | Fredericksburg (18 km) |
| Population Exposed | 645.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-08T20:55:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.2cd34b9a4ce59c279b0b185b73771163 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Spotsylvania, VA; Stafford, VA; City of Fredericksburg, VA; Charles, MD; King George, VA; Stafford, VA |
| Headline | Severe Thunderstorm Warning issued August 8 at 4:55PM EDT until August 8 at 5:00PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-08-08T17:05:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.2cd34b9a4ce59c279b0b185b7377116311bfc767.001.1","noaa_urn:oid:2.49.0.1.840.0.62553b81e72f26680624d724035109fdd7e997bc.001.1","noaa_urn:oid:2.49.0.1.840.0.70e090e0508d2de0bc3a2c5de1fb8ffbfbef7d53.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 58 |
| Iem Unit | mph |
| Iem City | 1 WSW Alanthus |
| Iem County | Culpeper |
| Iem State | VA |
| Iem Wfo | LWX |
| MergedSources | [{"id":"iem_G_38.540_-77.940_1786218240000","source":"iem","severity":"low","severityValue":25,"timestamp":1786218240000,"latitude":38.54,"longitude":-77.94}] |
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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 48/100, near Fredericksburg (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.