The National Weather Service confirmed an EF-2 tornado touched down near Morgantown, Berks County, on Tuesday night. No injuries were reported.
EF-2 status is defined by winds reaching 111-135 mph.
Emergency dispatchers in Berks and Chester counties cited roof damage and some partial collapses in Caernarvon Township, which includes Morgantown.
In Lancaster County, the storm brought marble-sized hail to some areas, a tractor-trailer was blown onto its side on Old Philadelphia Pike, and power was knocked out for thousands of PPL customers.
Another tornado watch was issued for the region Wednesday night.
The Morgantown tornado was one of three confirmed in the state Tuesday night. An EF-1 (86-110 mph) was confirmed in Wysox Township, Bradford County; an EF-1 touched down in Newton Township, Lackawanna County; and an EF-0 (65-85 mph) was reported in Penn Run, Indiana County. Straight-line microburst winds were also confirmed in Madison Township, Lackawanna County, with 75 mph winds.
At least 23 tornadoes have hit Pennsylvania since the beginning of the year, according to the National Oceanic and Atmospheric Administration.
Fourteen of those tornadoes occurred in April.
Tornadoes occur most frequently in April, May and June in Pennsylvania. The state typically averages 16 tornadoes for an entire year, according to research from NOAA.
“The jet stream off the Pacific has been unusually strong the last few months due to enhancement by the El Nino ongoing in the Pacific — so this is a factor.” said local meteorologist Eric Horst.