Investigators say the twister was "weak," categorized as an EF-0, with a maximum wind speed of 75 mph.
The NWS says the twister first damaged trees and blew out a garage wall around 3:45 p.m. near the intersection of 4th and Engle streets.
From there, investigators followed a nearly continuous path of tree damage in an easterly direction to the 2000 block of Third Street, where several trees were blown down and a building was damaged.
Additional damage was found in a path leading to Route 291 and Reany Street.
The tornado then lifted as it approached the Commodore Barry Bridge, the NWS said, but not before planks were ripped off the new I-95 ramp being built there.
No injuries were reported at the scene of the tornado.