This alert expired on 2 September 2026 at 01:05 UTC. It is kept here as a record.
It is the 28th strongest of the 63 detections recorded within 20 km of this point since 17 March 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Flash Flood Warning issued September 1 at 8:55PM EDT until September 1 at 9:00PM EDT by NWS State College PA
An estimated 355,363 people live within 50 km of this point.
Nearby, since 17 March 2026
- September 1, 2026 · score 37 · 10.8 km
- August 7, 2026 · score 43 · 11.1 km
- July 28, 2026 · score 37 · 19.4 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 37 out of 100, at 91 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 37 / 100 |
| Our confidence | 91% |
| Coordinates | 40.6339, -75.8554 |
| Nearest City | Whitehall Township (30 km) |
| Population Exposed | 355.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-02T00:55:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.5e91b6531c55010d9c39465ad5f0635b9609ef0c.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Lycoming, PA; New Castle, DE; Gloucester, NJ; Salem, NJ; Chester, PA; Delaware, PA; Berks, PA and 2 more areas |
| Headline | Flash Flood Warning issued September 1 at 8:55PM EDT until September 1 at 9:00PM EDT by NWS State College PA |
| Expires | 2026-09-01T21:05:00-04:00 |
| SenderName | NWS State College PA |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.5e91b6531c55010d9c39465ad5f0635b9609ef0c.001.1","noaa_urn:oid:2.49.0.1.840.0.c175b0136d66bbf500e095ab82f0d44ff4c26ef1.001.1","noaa_urn:oid:2.49.0.1.840.0.c9636d9bf9790435a1d3e4564ff15297e3ba57fb.001.1","noaa_urn:oid:2.49.0.1.840.0.5644192ce357220c3d59fea26351b0fdfbf7a6ef.001.1","noaa_urn:oid:2.49.0.1.840.0.645d806ba5043482f062f09889b195605bcb2209.001.1"] |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | 1 NNW Christiana |
| Spc County | Lancaster |
| Spc State | PA |
| Spc Comments | Reports of wires down and smoking on PA-Route 41. (CTP) |
| Iem TypeSummary | D |
| Iem City | 1 WSW Nuangola |
| Iem County | Luzerne |
| Iem State | PA |
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 10 February 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 near Whitehall Township?
Calamity.live data shows a weather event with CalamityScore 37/100, near Whitehall Township (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.