Aug 22, 2010
A slow moving low pressure system moved from the eastern Great Lakes region across southern New York on the 22nd and 23rd, and interacted with very moist air across the portions of St. Lawrence and Franklin counties. Widespread moderate to heavy rainfall developed by midday on the 22nd, and continued through the afternoon and evening. Widespread rainfall of 2 to 4 inches with localized 4 to 7 inches of rainfall caused flooding the night of August 22nd into the morning of the 23rd.
Source: NOAA National Weather Service Storm Events Database (event 253570). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in St. Lawrence County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.