This alert expired on 10 May 2026 at 03:00 UTC. It is kept here as a record.
It is the 16th strongest of the 89 detections recorded within 20 km of this point since 17 March 2026. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued May 9 at 5:43PM EDT until May 9 at 11:00PM EDT by NWS Buffalo NY
An estimated 93,673 people live within 50 km of this point.
Nearby, since 17 March 2026
- September 1, 2026 · score 32 · 0.0 km
- August 10, 2026 · score 39 · 0.0 km
- August 8, 2026 · score 39 · 0.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 out of 100, at 80 % 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) | 39 / 100 |
| Our confidence | 80% |
| Coordinates | 43.0000, -75.5000 |
| Nearest City | Rome (24 km) |
| Population Exposed | 93.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-09T21:43:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Watch_noaa_urn:oid:2.49.0.1.840.0.45261f0330cc145b09ffccb67f9d65ac |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Upper Niagara River and Buffalo Harbor; Ripley to Dunkirk NY; Dunkirk to Buffalo NY; Ripley to Buffalo NY extending from 5NM off shoreline to US-Canadian border; Niagara River to Hamlin Beach NY; Niagara River to Hamlin Beach NY beyond 5NM off shoreline to US-Canadian border; Cattaraugus, NY; Chautauqua, NY; Erie, NY; Genesee, NY; Livingston, NY; Monroe, NY; Niagara, NY; Orleans, NY; Wyoming, NY |
| Headline | Severe Thunderstorm Watch issued May 9 at 5:43PM EDT until May 9 at 11:00PM EDT by NWS Buffalo NY |
| Expires | 2026-05-09T23:00:00-04:00 |
| SenderName | NWS Buffalo NY |
| HasExactCoords | false |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.45261f0330cc145b09ffccb67f9d65ac2f84bd01.002.1","noaa_urn:oid:2.49.0.1.840.0.45261f0330cc145b09ffccb67f9d65ac2f84bd01.001.1"] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
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 Rome?
Calamity.live data shows a weather event with CalamityScore 39/100, near Rome (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.