Flash Flood — Madison, New York

2025-06-22 · near Canastota, Madison, New York

Event narrative

Flooding on the New York State Thruway near Exit 34 resulted in multiple accidents. No injuries or fatalities were reported.

Wider weather episode

A mesoscale convective system (MCS) dropped southward across Central NY from eastern Ontario, moving into an environment with plenty of moisture and instability during the early morning hours. Torrential rainfall accompanied these storms and produced widespread flash flooding and small river flooding. Estimates of 3 to 5 inches, with locally higher amounts, fell mostly within a 6-hour period.

View location on OpenStreetMap → (43.0900, -75.7500)

Source: NOAA Storm Events Database, event_id 1277299. Narrative written by the NWS forecast office that issued the report.