This alert expired on 3 September 2026 at 11:30 UTC. It is kept here as a record.
No stronger detection stands among the 56 recorded within 20 km of this point since 17 March 2026 — 2 others scored the same. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Flood Warning issued September 3 at 3:28AM EDT until September 3 at 7:30AM EDT by NWS Cleveland OH
An estimated 755,388 people live within 50 km of this point.
Nearby, since 17 March 2026
- September 2, 2026 · score 54 · 8.8 km
- September 3, 2026 · score 41 · 14.0 km
- August 2, 2026 · score 46 · 19.1 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 54 out of 100, at 87 % 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) | 54 / 100 |
| Our confidence | 87% |
| Coordinates | 42.7947, -78.6071 |
| Nearest City | Depew (14 km) |
| Population Exposed | 755.4K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-09-03T07:28:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.9cc5bf0761668955801cbad06e1c6111a86430e9.001.1 |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Expected |
| Certainty | Likely |
| AreaDesc | Erie, PA; Orleans, NY; Monroe, NY |
| Headline | Flood Warning issued September 3 at 3:28AM EDT until September 3 at 7:30AM EDT by NWS Cleveland OH |
| Expires | 2026-09-03T07:30:00-04:00 |
| SenderName | NWS Cleveland OH |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.9cc5bf0761668955801cbad06e1c6111a86430e9.001.1","noaa_urn:oid:2.49.0.1.840.0.9ddf62bfef97c5434ee14ba2aef19f8f2dcacf76.001.1","noaa_urn:oid:2.49.0.1.840.0.d02613a7d72cc8c744d3a2edefd83341f2e68711.001.1"] |
| Spc ReportType | hail |
| Spc Speed | 125 |
| Spc Location | Silver Springs |
| Spc County | Wyoming |
| Spc State | NY |
| Spc Comments | Picture of half dollar sized hail from social media. (BUF) |
| MergedSources | [{"id":"spc_wind_43.07_-78.27_3","source":"spc","severity":"medium","severityValue":45,"timestamp":1788428895448,"latitude":43.07,"longitude":-78.27},{"id":"spc_wind_43.08_-78.19_4","source":"spc","severity":"medium","severityValue":45,"timestamp":1788428895448,"latitude":43.08,"longitude":-78.19},{"id":"spc_wind_43.07_-78.27_5","source":"spc","severity":"medium","severityValue":45,"timestamp":1788428895448,"latitude":43.07,"longitude":-78.27},{"id":"spc_wind_43.00_-78.18_12","source":"spc","severity":"medium","severityValue":45,"timestamp":1788428895448,"latitude":43,"longitude":-78.18},{"id":"spc_wind_42.77_-77.90_13","source":"spc","severity":"medium","severityValue":45,"timestamp":1788428895448,"latitude":42.77,"longitude":-77.9},{"id":"spc_wind_42.56_-78.15_140","source":"spc","severity":"medium","severityValue":45,"timestamp":1788428895449,"latitude":42.56,"longitude":-78.15},{"id":"spc_wind_43.34_-78.71_141","source":"spc","severity":"medium","severityValue":45,"timestamp":1788428895449,"latitude":43.34,"longitude":-78.71},{"id":"spc_wind_42.61_-78.07_150","source":"spc","severity":"medium","severityValue":45,"timestamp":1788428895449,"latitude":42.61,"longitude":-78.07},{"id":"spc_wind_42.60_-78.07_152","source":"spc","severity":"medium","severityValue":45,"timestamp":1788428895449,"latitude":42.6,"longitude":-78.07},{"id":"spc_wind_42.58_-78.06_153","source":"spc","severity":"medium","severityValue":45,"timestamp":1788428895449,"latitude":42.58,"longitude":-78.06},{"id":"spc_wind_42.58_-78.04_155","source":"spc","severity":"medium","severityValue":45,"timestamp":1788428895449,"latitude":42.58,"longitude":-78.04},{"id":"spc_wind_43.28_-78.26_158","source":"spc","severity":"medium","severityValue":45,"timestamp":1788428895449,"latitude":43.28,"longitude":-78.26},{"id":"spc_wind_43.34_-78.71_164","source":"spc","severity":"medium","severityValue":45,"timestamp":1788428895449,"latitude":43.34,"longitude":-78.71},{"id":"spc_wind_43.05_-78.87_173","source":"spc","severity":"medium","severityValue":45,"timestamp":1788428895449,"latitude":43.05,"longitude":-78.87},{"id":"spc_wind_43.02_-78.77_174","source":"spc","severity":"medium","severityValue":45,"timestamp":1788428895449,"latitude":43.02,"longitude":-78.77},{"id":"spc_wind_42.97_-78.41_181","source":"spc","severity":"medium","severityValue":45,"timestamp":1788428895449,"latitude":42.97,"longitude":-78.41},{"id":"spc_wind_42.95_-78.40_185","source":"spc","severity":"medium","severityValue":45,"timestamp":1788428895449,"latitude":42.95,"longitude":-78.4},{"id":"spc_wind_42.67_-78.63_196","source":"spc","severity":"medium","severityValue":45,"timestamp":1788428895449,"latitude":42.67,"longitude":-78.63},{"id":"spc_wind_43.19_-78.39_201","source":"spc","severity":"medium","severityValue":45,"timestamp":1788428895449,"latitude":43.19,"longitude":-78.39},{"id":"spc_wind_42.51_-78.67_203","source":"spc","severity":"medium","severityValue":45,"timestamp":1788428895449,"latitude":42.51,"longitude":-78.67},{"id":"spc_wind_42.46_-78.35_205","source":"spc","severity":"medium","severityValue":45,"timestamp":1788428895449,"latitude":42.46,"longitude":-78.35},{"id":"spc_hail_42.66_-78.09_322","source":"spc","severity":"high","severityValue":65,"timestamp":1788428895450,"latitude":42.66,"longitude":-78.09}] |
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 54/100, near Depew (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.