Aug 12, 2018
A cold front stalled over Southern New England on the 11th. Low pressure from the Midwest then moved slowly east along the front. The weather system drew upon warm and very humid air to create showers with local downpours, resulting in rainfall amounts of two to five inches in Northern Massachusetts on August 11th and 12th. An exceptionally powerful downpour left 8.15 inches in the city of Lynn.
Source: NOAA National Weather Service Storm Events Database (event 780604). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Middlesex County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.