A tornado with 80 mph winds moved across 1.2 miles near Jarrettsville on Friday night, National Weather Service officials confirmed Monday.
The tornado ranked as an EF-0 on the Enhanced Fujita scale, according to a report the weather service's Baltimore/Washington forecast office posted to its website Monday afternoon. That classification is the weakest on the EF scale and includes tornadoes with gusts of 65 to 85 mph lasting at least three seconds.
Damage discovered when weather service officials surveyed the area included a gazebo being lifted off the porch of a house and dropped on top of the house's roof and large trees being uprooted or snapped in half, according to a report posted on the weather service website Tuesday. The damage was concentrated along a stretch of Salem Church Road, a rural area near the crossroads of Jarrettsville Pike and Norrisville Road, storm reports show.
The tornado is estimated to have lasted from 7:07 p.m. to 7:12 p.m.
One homeowner in the 2100 block of Cox Road reported "hearing a loud noise during the storm and subsequently found minor damage to the rear of their one-story home and two large trees on their property destroyed," Harford spokesman Bob Thomas said in a news release. The home's television antenna was pulled of its roof and tossed into the backyard.
The area was under a tornado warning Friday night. One alert from weather service officials briefly said a tornado had been confirmed, but they later revised the alerts to remove the confirmation. Tornadoes are not typically considered confirmed until damage can be surveyed to appear consistent with tornado winds.
There had previously been 14 confirmed tornadoes so far this year in the Maryland portion of the weather service's Baltimore/Washington forecast area, which does not include some parts of the Eastern Shore or Garrett County. In a normal year, the state sees about 10 tornadoes, according to one Weather Channel tornado survey.