The tornado watch extends until 7 p.m. or about an hour before Monday night's NFL game between the Philadelphia Eagles and Seattle Seahawks at Lincoln Financial Field.
Fans were not allowed to attend due to COVID-19 restrictions, but the game was aired live by ESPN.
The Eagles are 3-6-1 and the Seahawks are 7-3.
The NWS out of Mount Holly said the storm also may bring hail, strong winds and flooding.
The storm also has brought widespread power outages.
In New Jersey, the watch includes Atlantic and Mercer counties and extends as far north as Monmouth County.
The tornado watch also includes parts of Virginia, Maryland and Delaware, according to the NWS.
This is a developing news story.
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