The EF-0 twister had estimated wind speeds of 80 miles per hour, the Baltimore Sun reported.
The tornado traveled from Compton in St. Mary's County to Cove Point in Calvert County between 12:23 p.m. and 12:39 p.m, the weather service said.
The Sun said the tornado knocked down trees but there were no reports of injuries.
Much of the state was under a tornado watch Friday afternoon.
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