Thunderstorm Wind — Atlantic, New Jersey

2020-07-22 · near (acy)atlantic City A, Atlantic, New Jersey

Event narrative

Measured at Atlantic City International Airport.

Wider weather episode

A slow moving frontal boundary was draped across upstate New York and southern New England on July 22 with multiple waves of low pressure tracking along it. The mid-Atlantic was left in a warm sector air mass south of this front. This led to a very hot and humid day on July 22 with air temperatures rising into the 90s and dew point values near 70. This caused strong instability to develop. Shear values were not overly impressive, but an approaching shortwave disturbance from the Midwest did help to increase shear late in the day. This disturbance also served as forcing for convection to develop in the warm and unstable air mass. Widespread thunderstorm development occurred, with storms eventually developing into a mostly solid squall line. This line of storms produced numerous reports of wind damage across eastern Pennsylvania, New Jersey, and Delmarva.

View location on OpenStreetMap → (39.4600, -74.5800)

Source: NOAA Storm Events Database, event_id 905332. Narrative written by the NWS forecast office that issued the report.