Calamity
MediumSevere WeatherCalamity Score: 34

Severe Weather near Johnstown

SomersetUnited StatesNOAA

Right now

The most recent data we hold from NOAA arrived 8 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.

One other detection within 20 km in the last 24 hours, 20 km from here.

This alert expired on 6 June 2026 at 20:15 UTC. It is kept here as a record.

It is the 10th strongest of the 205 detections recorded within 20 km of this point since 17 March 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.

What the source measured

NOAA reported: Severe Thunderstorm Warning issued June 6 at 3:33PM EDT until June 6 at 4:15PM EDT by NWS State College PA

An estimated 19,966 people live within 50 km of this point.

Nearby, since 17 March 2026

How we know

One source: NOAA. Not yet confirmed by a second, independent source.

Our own score for this event is 34 out of 100, at 80 % confidence.

The score is ours, computed from intensity, exposed population and local history — not the source’s.

Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.

Event Data

TypeSevere Weather
SeverityMedium
Calamity Score (ours)34 / 100
Our confidence80%
Coordinates40.1719, -78.9898
Nearest CityJohnstown (19 km)
Population Exposed20.0K within 50 km
Impact Tiersignificant
Timestamp2026-06-06T19:33:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.519ae4218cc601a936dc307f0cf48c8b

Score Breakdown

35
intensity
40
population
0
cascading
80
historical

Technical Details

EventSevere Thunderstorm Warning
UrgencyImmediate
CertaintyObserved
AreaDescBlair, PA; Cambria, PA; Centre, PA; Clearfield, PA; Huntingdon, PA; Cameron, PA; Clearfield, PA; Elk, PA; Fayette, PA; Greene, PA; Westmoreland, PA; Marion, WV; Monongalia, WV; Preston, WV and 3 more areas
HeadlineSevere Thunderstorm Warning issued June 6 at 3:33PM EDT until June 6 at 4:15PM EDT by NWS State College PA
Expires2026-06-06T16:15:00-04:00
SenderNameNWS State College PA
HasExactCoordstrue
MergedCount6
MergedIds["noaa_urn:oid:2.49.0.1.840.0.519ae4218cc601a936dc307f0cf48c8bf5aad1cf.001.1","noaa_urn:oid:2.49.0.1.840.0.3f59dde7b3dd424d75de3d27ad5dc339db3dec23.001.1","noaa_urn:oid:2.49.0.1.840.0.082d543a74f87da44760ab6ad84c9c011c2a1b4f.002.1","noaa_urn:oid:2.49.0.1.840.0.52484dea7e9d58781e7db7d4eecc6bc37f052319.001.1","noaa_urn:oid:2.49.0.1.840.0.30f560287d363ad3c72879f9e5c04f752da0195c.001.1","noaa_urn:oid:2.49.0.1.840.0.56735fa84bfe444b2232418f5ec057f36866ffe1.001.1"]

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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