This alert expired on 4 September 2026 at 03:30 UTC. It is kept here as a record.
It is the 39th strongest of the 103 detections recorded within 20 km of this point since 9 March 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Flash Flood Warning issued September 3 at 9:46PM EDT until September 3 at 11:30PM EDT by NWS Buffalo NY
An estimated 873,512 people live within 50 km of this point.
Nearby, since 9 March 2026
- August 2, 2026 · score 46 · 7.6 km
- September 2, 2026 · score 54 · 8.1 km
- June 18, 2026 · score 52 · 9.6 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 41 out of 100, at 86 % 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 | 86% |
| Coordinates | 42.9124, -78.6346 |
| Nearest City | Depew (5 km) |
| Population Exposed | 873.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-04T01:46:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.1567c9e14508729b122d0d7591fac6f155e606fc.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Erie, NY; Erie, NY; Wyoming, NY |
| Headline | Flash Flood Warning issued September 3 at 9:46PM EDT until September 3 at 11:30PM EDT by NWS Buffalo NY |
| Expires | 2026-09-03T23:30:00-04:00 |
| SenderName | NWS Buffalo NY |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.1567c9e14508729b122d0d7591fac6f155e606fc.001.1","noaa_urn:oid:2.49.0.1.840.0.afad5261ed8c52c61c20501ed432fc66064d8d4c.001.1"] |
| Iem TypeSummary | F |
| Iem City | Kenmore |
| Iem County | Erie |
| Iem State | NY |
| Iem Wfo | BUF |
| Iem Remark | 2.26 inches of rain in an hour from 6:45 to 7:45. Water over the curb on Wardman Road. |
| MergedSources | [{"id":"iem_F_42.940_-78.860_1788479400000","source":"iem","severity":"low","severityValue":25,"timestamp":1788479400000,"latitude":42.94,"longitude":-78.86},{"id":"iem_F_42.940_-78.870_1788479100000","source":"iem","severity":"low","severityValue":25,"timestamp":1788479100000,"latitude":42.94,"longitude":-78.87},{"id":"iem_F_42.990_-78.910_1788479640000","source":"iem","severity":"low","severityValue":25,"timestamp":1788479640000,"latitude":42.99,"longitude":-78.91},{"id":"iem_F_42.930_-78.700_1788479220000","source":"iem","severity":"low","severityValue":25,"timestamp":1788479220000,"latitude":42.93,"longitude":-78.7},{"id":"iem_F_42.940_-78.850_1788479400000","source":"iem","severity":"low","severityValue":25,"timestamp":1788479400000,"latitude":42.94,"longitude":-78.85},{"id":"iem_R_42.970_-78.880_1788483600000","source":"iem","severity":"low","severityValue":25,"timestamp":1788483600000,"latitude":42.97,"longitude":-78.88},{"id":"iem_F_42.960_-78.870_1788479100000","source":"iem","severity":"low","severityValue":25,"timestamp":1788479100000,"latitude":42.96,"longitude":-78.87}] |
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 Depew?
Calamity.live data shows a weather event with CalamityScore 41/100, near Depew (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.