Right now
The most recent data we hold from NOAA arrived 33 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
This alert expired on 11 June 2026 at 22:15 UTC. It is kept here as a record.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 11 at 5:56PM EDT until June 11 at 6:15PM EDT by NWS Baltimore MD/Washington DC
Urban PEI: 19,966 within a heuristic 50 km radius; not unique people.
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 28 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 28 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 40.0953, -78.6729 |
| Nearest City | Johnstown (33 km) |
| Urban exposure index (PEI) | 20.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-11T21:56:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.d4c9809fd69250f5c7f0a5705cc1559a |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-06-11T21:56:00.000Z.
First archived: 2026-06-11T21:58:09.836Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Rockingham, VA; Grant, WV; Hardy, WV; Pendleton, WV; Nicholas, WV; Nicholas, WV; Pocahontas, WV; Webster, WV and 10 more areas |
| Headline | Severe Thunderstorm Warning issued June 11 at 5:56PM EDT until June 11 at 6:15PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-06-11T18:15:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
| MergedCount | 13 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.d4c9809fd69250f5c7f0a5705cc1559ab02d4fdd.001.1","noaa_urn:oid:2.49.0.1.840.0.c21d4f016c37ce139d9acf3632a4cc157a85d498.001.1","noaa_urn:oid:2.49.0.1.840.0.2e53f94c7a3ecac5f534b68f721c6fb8a7aeebf5.001.1","noaa_urn:oid:2.49.0.1.840.0.f27fb5c6e15adf44a169428a02091d3311518f44.002.1","noaa_urn:oid:2.49.0.1.840.0.6a85ec3b3353efd39a40976080a4896e542e0bf7.002.1","noaa_urn:oid:2.49.0.1.840.0.5e290d43393ed0cae36663527c3313c337642635.002.1","noaa_urn:oid:2.49.0.1.840.0.2b4e8c23923461200fecf65b6ceddcf72e6f3f8e.001.1","noaa_urn:oid:2.49.0.1.840.0.9de963617dfcaf225b1a0581f24978facc06cf04.001.1","noaa_urn:oid:2.49.0.1.840.0.ec6aec84e3e00f5cde19ef5e9dc7dc2846dd2a82.001.1","noaa_urn:oid:2.49.0.1.840.0.5d28523e13f2be654dc0f2c9561d0441b8faf29e.001.1","noaa_urn:oid:2.49.0.1.840.0.dff7d5877d95fde2e1aaf5cfc048b5362454baed.001.1","noaa_urn:oid:2.49.0.1.840.0.01646c1fb2a35c3aff5bdd04811cd3a5f8a96f38.001.1","noaa_urn:oid:2.49.0.1.840.0.36794172b2b6aa747df355e76c4189199e5835c8.001.1"] |
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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