Jun 22, 2025
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.
Source: NOAA National Weather Service Storm Events Database (event 1277292). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Cortland County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.