Jun 29, 2021
Strong surface heating with temperatures in the 90s and dewpoints in the 70s resulted in sufficient destabilization for storms to form, specifically along lake breeze boundaries in the middle to late afternoon. A Heat Advisory was in effect for lower elevations excluding Jefferson County. Surface based instability was strong and precipitable water values were almost 2 inches. Shear was minimal across most of the region with 20-25 knots across western New York increasing to 30-35 knots across Lak
Source: NOAA National Weather Service Storm Events Database (event 968991). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Wyoming County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.