Aug 12, 2000
A nearly unprecedented thunderstorm with torrential downpour remained nearly stationary for about six hours from 9 a.m. EDT through 3 p.m. EDT on August 12th over the Hamburg Mountains of eastern Sussex County. Doppler Radar Storm total estimates reached around 15 inches along the Sussex/Morris County border. Two to three inches of rain fell per hour in the strongest storms and caused considerable, widespread and devastating flooding across southeastern Sussex County and western Morris County.
Source: NOAA National Weather Service Storm Events Database (event 5172751). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Sussex County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.