Right now
The most recent data we hold from NOAA arrived 5 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 18 June 2026 at 12:30 UTC. It is kept here as a record.
It is the 5th strongest of the 54 detections recorded within 20 km of this point since 16 March 2026. 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 June 18 at 8:06AM EDT until June 18 at 8:30AM EDT by NWS Baltimore MD/Washington DC
Nearby, since 16 March 2026
- July 21, 2026 · score 16 · 15.4 km
- August 28, 2026 · score 22 · 21.2 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 16 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) | 16 / 100 |
| Legacy data-support index | 0.69/1 |
| Coordinates | 38.5844, -80.0077 |
| Nearest City | Clarksburg (83 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-06-18T12:06:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.981e30b98adcb87ef4e38802585a650f |
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: 2026-06-18T12:06:00.000Z.
First archived: 2026-06-18T12:08:21.420Z. 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 | Allegany, MD; Rockingham, VA; Grant, WV; Hampshire, WV; Hardy, WV; Mineral, WV; Pendleton, WV; Tucker, WV; Garrett, MD; Grant, WV; Pendleton, WV and 3 more areas |
| Headline | Severe Thunderstorm Warning issued June 18 at 8:06AM EDT until June 18 at 8:30AM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-06-18T08:30:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.981e30b98adcb87ef4e38802585a650f099e7a9a.001.1","noaa_urn:oid:2.49.0.1.840.0.95a374853a6924ed87a134aa5e087c907fa34524.001.1","noaa_urn:oid:2.49.0.1.840.0.1b29db456ec2db6c09957dcdcbbb8b669a744039.001.1","noaa_urn:oid:2.49.0.1.840.0.6473bd22b9b1874c2d5ad204315485b3ef39f2d9.001.1","noaa_urn:oid:2.49.0.1.840.0.e99982b6497877d195debf133142aad43a2e2e30.001.1","noaa_urn:oid:2.49.0.1.840.0.fee2fcbaa453bb2a11fad0bd146172c35d354a3f.001.1"] |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | 1 ENE Rock Cave |
| Spc County | Upshur |
| Spc State | WV |
| Spc Comments | Multiple trees down in and around Rock Cave with one reported down on a house. (RLX) |
| Iem TypeSummary | D |
| Iem City | 1 ENE Rock Cave |
| Iem County | Upshur |
| Iem State | WV |
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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