This alert expired on 4 July 2026 at 22:00 UTC. It is kept here as a record.
No stronger detection stands among the 17 recorded within 20 km of this point since 17 March 2026 — 8 others scored the same. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 4 at 5:15PM EDT until July 4 at 6:00PM EDT by NWS State College PA
An estimated 20,130 people live within 50 km of this point.
Nearby, since 17 March 2026
- August 27, 2026 · score 34 · 16.4 km
- May 13, 2026 · score 34 · 16.7 km
- July 18, 2026 · score 34 · 18.9 km
How we know
Confirmed by 4 independent sources, including NOAA.
Our own score for this event is 34 out of 100, at 87 % 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 | 87% |
| Coordinates | 39.2919, -79.0436 |
| Nearest City | Cumberland (47 km) |
| Population Exposed | 20.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-04T21:15:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.6ac4de5bb462456e4cc38e73b516b2e7 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Franklin, PA; Fulton, PA; Caroline, VA; Fauquier, VA; Prince William, VA; Stafford, VA; City of Manassas, VA; City of Manassas Park, VA and 16 more areas |
| Headline | Severe Thunderstorm Warning issued July 4 at 5:15PM EDT until July 4 at 6:00PM EDT by NWS State College PA |
| Expires | 2026-07-04T18:00:00-04:00 |
| SenderName | NWS State College PA |
| HasExactCoords | true |
| MergedCount | 19 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.6ac4de5bb462456e4cc38e73b516b2e7191031d0.001.1","noaa_urn:oid:2.49.0.1.840.0.a24d32eb9e6ebfc52c450626b8fe7e2d88fbf321.001.1","noaa_urn:oid:2.49.0.1.840.0.045f45151444b8ddf263ec28325b3c794b54ad71.001.1","noaa_urn:oid:2.49.0.1.840.0.36339053bef2b81b3005864276c0667df9415221.001.1","noaa_urn:oid:2.49.0.1.840.0.ba3d956a4d0fa64658c2de710ab71bdee1648da9.001.1","noaa_urn:oid:2.49.0.1.840.0.9a8e961ae95a7494fb2ed5ae14d17813f4874553.001.1","noaa_urn:oid:2.49.0.1.840.0.443b935e6995ad2610b36f876c75a19e81301b0d.001.1","noaa_urn:oid:2.49.0.1.840.0.e26be90368e3c6826486f66278865c0ac8ebc11d.001.1","noaa_urn:oid:2.49.0.1.840.0.6f40d9da7ab7acf702ae71928056d03659922662.001.1","noaa_urn:oid:2.49.0.1.840.0.ea96b25a74f135242f4b72fa4f791ad2312dc303.001.1","noaa_urn:oid:2.49.0.1.840.0.fc2340fa96cb8c01c566176f8f022bacb4e669e1.001.1","noaa_urn:oid:2.49.0.1.840.0.1dad7d91b072a3b7c3ab9ddca11149eca5c797c0.001.1","noaa_urn:oid:2.49.0.1.840.0.09286318d4960747764216d27de0fc2ba40b44b7.001.1","noaa_urn:oid:2.49.0.1.840.0.1498712bd04b56939e0c09c3a8a8e419887a688e.001.1","noaa_urn:oid:2.49.0.1.840.0.bc80d05e20d9d1c08f105ff479c94a133ad566a2.001.1","noaa_urn:oid:2.49.0.1.840.0.622442f15ab77d67bb47b47305efd1c60dab7b3c.001.1","noaa_urn:oid:2.49.0.1.840.0.56443351dd18605da521a671593be69eb0e8bf7d.001.1","noaa_urn:oid:2.49.0.1.840.0.4809993f874738ba035f82bde732f8d4e20d4fdd.002.1","noaa_urn:oid:2.49.0.1.840.0.c4e6dc6aff8e61ed8e644653f3ebc326c2df315e.001.1"] |
| Iem TypeSummary | D |
| Iem City | 6 ENE Brandonville |
| Iem County | Preston |
| Iem State | WV |
| Iem Wfo | PBZ |
| Iem Remark | trees down. |
| MergedSources | [{"id":"iem_D_39.590_-79.790_1783188300000","source":"iem","severity":"low","severityValue":25,"timestamp":1783188300000,"latitude":39.59,"longitude":-79.79},{"id":"iem_D_38.710_-79.340_1783192080000","source":"iem","severity":"low","severityValue":25,"timestamp":1783192080000,"latitude":38.71,"longitude":-79.34},{"id":"iem_D_39.710_-79.520_1783190220000","source":"iem","severity":"low","severityValue":25,"timestamp":1783190220000,"latitude":39.71,"longitude":-79.52}] |
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 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.