Calamity
MediumSevere WeatherCalamity Score: 16

Severe Weather in United States

ClarionUnited StatesNOAA

Right now

The most recent data we hold from NOAA arrived 7 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.

5 other detections within 20 km in the last 24 hours, the nearest <1 km from here.

This alert expired on 13 September 2026 at 06:45 UTC. It is kept here as a record.

It is the 33rd strongest of the 74 detections recorded within 20 km of this point since 17 March 2026. The last comparable one was on 3 September 2026. 4 more were recorded here in the fortnight before it.

What the source measured

NOAA reported: Flash Flood Warning issued September 12 at 10:42PM EDT until September 13 at 2:45AM EDT by NWS State College PA

Nearby, since 17 March 2026

How we know

Confirmed by 2 independent sources, including NOAA.

Our own score for this event is 16 out of 100, at 66 % confidence.

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

Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.

Event Data

TypeSevere Weather
SeverityMedium
Calamity Score (ours)16 / 100
Our confidence66%
Coordinates41.2151, -79.3119
Nearest CityPlum (88 km)
Impact Tierminor
Timestamp2026-09-13T02:42:00.000Z
Sourcehttps://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.966f23a1f74a2113243788ee1342d58cce70b11b.001.1

Score Breakdown

35
intensity
0
population
0
cascading
18
historical

Technical Details

EventFlash Flood Warning
UrgencyImmediate
CertaintyLikely
AreaDescElk, PA; Armstrong, PA; Butler, PA
HeadlineFlash Flood Warning issued September 12 at 10:42PM EDT until September 13 at 2:45AM EDT by NWS State College PA
Expires2026-09-13T02:45:00-04:00
SenderNameNWS State College PA
HasExactCoordstrue
MergedCount2
MergedIds["noaa_urn:oid:2.49.0.1.840.0.966f23a1f74a2113243788ee1342d58cce70b11b.001.1","noaa_urn:oid:2.49.0.1.840.0.944b799fea43b6646e2d3ac19a8b98b85c6fa790.001.1"]
Spc ReportTypewind
Spc SpeedUNK
Spc Location4 SSE Plumville
Spc CountyIndiana
Spc StatePA
Spc CommentsTrees down at Washington Church and Davis roads. (PBZ)
MergedSources[{"id":"spc_wind_40.95_-79.13_14","source":"spc","severity":"medium","severityValue":45,"timestamp":1789268259960,"latitude":40.95,"longitude":-79.13},{"id":"spc_wind_40.74_-79.16_19","source":"spc","severity":"medium","severityValue":45,"timestamp":1789268259960,"latitude":40.74,"longitude":-79.16}]

Safety Information

During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.

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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