This alert expired on 27 August 2026 at 21:00 UTC. It is kept here as a record.
It is the 2nd strongest of the 22 detections recorded within 20 km of this point since 17 March 2026. The last comparable one was on 22 August 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 27 at 4:42PM EDT until August 27 at 5:00PM EDT by NWS Baltimore MD/Washington DC
An estimated 20,130 people live within 50 km of this point.
Nearby, since 17 March 2026
- July 21, 2026 · score 58 · 8.9 km
- July 4, 2026 · score 34 · 16.4 km
- May 18, 2026 · score 22 · 22.0 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 34 out of 100, at 89 % 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) | 34 / 100 |
| Our confidence | 89% |
| Coordinates | 39.2567, -78.8582 |
| Nearest City | Cumberland (45 km) |
| Population Exposed | 20.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-27T20:42:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.2ec6d16cdc0bcef7819eb4034fb9ee80 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Fauquier, VA; Rappahannock, VA; Warren, VA; Rockingham, VA; Shenandoah, VA; Westmoreland, PA |
| Headline | Severe Thunderstorm Warning issued August 27 at 4:42PM EDT until August 27 at 5:00PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-08-27T17:00:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.2ec6d16cdc0bcef7819eb4034fb9ee80f0c6e06c.001.1","noaa_urn:oid:2.49.0.1.840.0.d11ed4e04864523c21bbf33b84e9b2c974eed0dd.001.1","noaa_urn:oid:2.49.0.1.840.0.1ac90c4db75bcb47c02b640c84ad1cb6af5d9e1a.001.1"] |
| Iem TypeSummary | D |
| Iem City | 2 NW Broadway |
| Iem County | Rockingham |
| Iem State | VA |
| Iem Wfo | LWX |
| Iem Remark | Several trees and wires down in the 6100 block of VA-259 Brocks Gap Road. |
| MergedSources | [{"id":"iem_D_38.660_-78.870_1787861700000","source":"iem","severity":"low","severityValue":25,"timestamp":1787861700000,"latitude":38.66,"longitude":-78.87},{"id":"iem_D_38.630_-78.830_1787862000000","source":"iem","severity":"low","severityValue":25,"timestamp":1787862000000,"latitude":38.63,"longitude":-78.83}] |
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.
Want to know when something happens near Cumberland?
Calamity.live data shows a weather event with CalamityScore 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.