Right now
The most recent data we hold from NOAA arrived 4 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
6 other detections within 20 km in the last 24 hours, the nearest 15 km from here.
This alert is in force until 10 September 2026, 05:15 UTC.
It is the 32nd strongest of the 130 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 9 September 2026. 37 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued September 9 at 10:09PM EDT until September 10 at 1:15AM EDT by NWS Pittsburgh PA
An estimated 712,840 people live within 50 km of this point.
Nearby, since 15 March 2026
- September 4, 2026 · score 54 · 11.3 km
- August 2, 2026 · score 72 · 12.6 km
- September 9, 2026 · score 72 · 14.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 41 out of 100, at 81 % 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
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 41 / 100 |
| Our confidence | 81% |
| Coordinates | 40.6094, -80.1800 |
| Nearest City | Cranberry Township (10 km) |
| Population Exposed | 712.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-10T02:09:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.aac25aed1b4f4841129a6eab531ebbda9e0295af.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Columbiana, OH; Allegheny, PA; Beaver, PA; Butler, PA; Washington, PA; Hancock, WV |
| Headline | Flash Flood Warning issued September 9 at 10:09PM EDT until September 10 at 1:15AM EDT by NWS Pittsburgh PA |
| Expires | 2026-09-10T01:15:00-04:00 |
| SenderName | NWS Pittsburgh PA |
| HasExactCoords | true |
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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