This alert expired on 3 September 2026 at 09:45 UTC. It is kept here as a record.
No stronger detection stands among the 51 recorded within 20 km of this point since 16 March 2026 — 2 others scored the same. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Flash Flood Warning issued September 3 at 1:42AM EDT until September 3 at 5:45AM EDT by NWS Cleveland OH
An estimated 99,475 people live within 50 km of this point.
Nearby, since 16 March 2026
- August 9, 2026 · score 39 · 22.2 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 45 out of 100, at 92 % 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) | 45 / 100 |
| Our confidence | 92% |
| Coordinates | 41.9392, -79.9546 |
| Nearest City | Erie (24 km) |
| Population Exposed | 99.5K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-09-03T05:42:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.3091f9c283a6a3ae86bfb77c9ddc8864d093c9c5.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Crawford, PA; Erie, PA; Erie, PA |
| Headline | Flash Flood Warning issued September 3 at 1:42AM EDT until September 3 at 5:45AM EDT by NWS Cleveland OH |
| Expires | 2026-09-03T05:45:00-04:00 |
| SenderName | NWS Cleveland OH |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.3091f9c283a6a3ae86bfb77c9ddc8864d093c9c5.001.1","noaa_urn:oid:2.49.0.1.840.0.421a4cece1f36e07a8aa60809f748075a04728cb.001.1"] |
| Spc ReportType | hail |
| Spc Speed | 100 |
| Spc Location | 1 SE Harborcreek |
| Spc County | Erie |
| Spc State | PA |
| Spc Comments | (CLE) |
| Iem TypeSummary | D |
| Iem City | 2 SW Wesleyville |
| Iem County | Erie |
| 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 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 near Erie?
Calamity.live data shows a weather event with CalamityScore 45/100, near Erie (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.