An EF-0 tornado touched down in Berks County, Pennsylvania, on Tuesday as severe weather hit the Philadelphia region, the National Weather Service said.

It occurred during Tuesday afternoon’s severe thunderstorm and was followed by downdraft indicative of straight-line wind, a National Weather Service survey team concluded.

Forecasters classified the twister as an EF-0 with 70 mph winds that damaged trees along its nearly one-mile path earlier this week.