This alert is in force until 3 September 2026, 04:30 UTC.
It is the 4th strongest of the 24 detections recorded within 20 km of this point since 17 March 2026. The last comparable one was on 2 September 2026.
What the source measured
NOAA reported: Flash Flood Warning issued September 2 at 9:24PM EDT until September 3 at 12:30AM EDT by NWS State College PA
Nearby, since 17 March 2026
- July 18, 2026 · score 46 · 12.0 km
- June 18, 2026 · score 22 · 14.3 km
- June 18, 2026 · score 22 · 18.3 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 28 out of 100, at 71 % 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 | High |
| Calamity Score (ours) | 28 / 100 |
| Our confidence | 71% |
| Coordinates | 42.2417, -78.1347 |
| Nearest City | Batavia (84 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-03T01:24:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.f27b9442ad731450f8c58efa97daf5933e770fc2.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Centre, PA; Clinton, PA; Lycoming, PA; Allegany, NY; Cattaraugus, NY; Erie, NY; Genesee, NY; Niagara, NY; Orleans, NY |
| Headline | Flash Flood Warning issued September 2 at 9:24PM EDT until September 3 at 12:30AM EDT by NWS State College PA |
| Expires | 2026-09-03T00:30:00-04:00 |
| SenderName | NWS State College PA |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.f27b9442ad731450f8c58efa97daf5933e770fc2.001.1","noaa_urn:oid:2.49.0.1.840.0.94dd7a4ced0c672a435129392ed04fe431da268c.001.1","noaa_urn:oid:2.49.0.1.840.0.725674f121c30050ee2587f72843d92b1e3f1898.001.1"] |
| Spc ReportType | hail |
| Spc Speed | 100 |
| Spc Location | 3 ESE Freedom |
| Spc County | Cattaraugus |
| Spc State | NY |
| Spc Comments | (BUF) |
| Iem TypeSummary | D |
| Iem City | 1 WNW Portageville |
| Iem County | Wyoming |
| Iem State | NY |
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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 28/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.