This alert expired on 3 August 2026 at 03:45 UTC. It is kept here as a record.
It is the 2nd strongest of the 107 detections recorded within 20 km of this point since 9 March 2026. Another comparable one was recorded here earlier the same day. 25 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued August 2 at 8:47PM EDT until August 2 at 11:45PM EDT by NWS Buffalo NY
An estimated 1,098,920 people live within 50 km of this point.
Nearby, since 9 March 2026
- July 1, 2026 · score 52 · 3.2 km
- July 4, 2026 · score 52 · 6.0 km
- March 10, 2026 · score 52 · 7.3 km
How we know
Confirmed by 7 independent sources, including NOAA.
Our own score for this event is 52 out of 100, at 91 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 52 / 100 |
| Our confidence | 91% |
| Coordinates | 43.0558, -78.7458 |
| Nearest City | East Amherst (5 km) |
| Population Exposed | 1.1M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-03T00:47:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.60e6667c8aca8340971083815c37137f |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Erie, NY; Niagara, NY; Niagara, NY; Orleans, NY |
| Headline | Flash Flood Warning issued August 2 at 8:47PM EDT until August 2 at 11:45PM EDT by NWS Buffalo NY |
| Expires | 2026-08-02T23:45:00-04:00 |
| SenderName | NWS Buffalo NY |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.60e6667c8aca8340971083815c37137f88926540.001.1","noaa_urn:oid:2.49.0.1.840.0.e620cdc965b23db82dbb42f05ca7af7c0c96a064.001.1"] |
| Iem TypeSummary | F |
| Iem City | 2 ESE Sanborn |
| Iem County | Niagara |
| Iem State | NY |
| Iem Wfo | BUF |
| Iem Remark | Lockport Road at Shawnee Road impassible with water over the road. |
| MergedSources | [{"id":"iem_F_43.170_-78.690_1785709020000","source":"iem","severity":"low","severityValue":25,"timestamp":1785709020000,"latitude":43.17,"longitude":-78.69},{"id":"iem_F_43.120_-78.860_1785707520000","source":"iem","severity":"low","severityValue":25,"timestamp":1785707520000,"latitude":43.12,"longitude":-78.86},{"id":"iem_F_43.180_-78.820_1785709500000","source":"iem","severity":"low","severityValue":25,"timestamp":1785709500000,"latitude":43.18,"longitude":-78.82},{"id":"iem_F_43.120_-78.830_1785720000000","source":"iem","severity":"low","severityValue":25,"timestamp":1785720000000,"latitude":43.12,"longitude":-78.83},{"id":"iem_F_43.120_-78.830_1785710580000","source":"iem","severity":"low","severityValue":25,"timestamp":1785710580000,"latitude":43.12,"longitude":-78.83},{"id":"iem_F_43.130_-78.840_1785712500000","source":"iem","severity":"low","severityValue":25,"timestamp":1785712500000,"latitude":43.13,"longitude":-78.84}] |
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 East Amherst?
Calamity.live data shows a weather event with CalamityScore 52/100, near East Amherst (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.