Concord, MA EF-1 Tornado: Understanding How Forecasters Predicted and Confirmed the Tornado (Credit: NWS Taunton, MA and NWS Gray, ME)
DISCUSSION: On Monday, August 22, 2016, the National Weather Service (NWS) Boston/Taunton office confirmed that an EF-1 tornado touched down at around 3:20 a.m. E.D.T. near Concord, MA (About 20 miles northwest of Boston, MA in Middlesex County). The short-lived tornado developed maximum wind speeds of up to 100 mph with a path length of 0.5 miles and a maximum width of 400 yards. The tornado was associated with a larger system of storms that were fueled by an advancing cold front. The well-defined cold front that approached from the Ohio Valley had organized a marginally favorable thunderstorm environment across parts of the Northeast region. The predominant impacts across the Northeast included uprooted trees, torrential rainfall, brief flooding and damaging straight-line winds. NWS meteorologists successfully forecasted and confirmed the tornado by analyzing weather forecast maps, observing atmospheric conditions and assessing storm damages.