EF0 tornado in Montgomery County, Pennsylvania

An EF0 tornado occurred in Worcester Township in Montgomery

County, Pennsylvania as Tropical Storm Isaias moved northward

along the East Coast of the United States. With southeastern

Pennsylvania being in the northeastward, right front quadrant, the

tornado and parent storm moved in an unusual northwestward

trajectory ahead of the main center of the tropical storm. An area

of circulation tightened in a strong cell within a rainband in

southeastern Montgomery County. As this circulation tightened, a

brief tornado formed near the intersection of Brindle Court and

Township Line Road in Worcester Township, where a few small trees

were downed in a small residential subdivision. From here, the

tornado continued its northwestward trajectory through the

township, downing trees along Potshop Road. The circulation may

have lifted with the path being somewhat discontinuous. A somewhat

denser area of trees were downed as the tornado moved across

Valley Forge Road and northwestward along Heebner Road. Several

tree tops were sheared off in addition to several utility poles

being pushed over along Heebner Road near the intersection of

Shefley Lane. The tornado continued northwest from here,

eventually downing several hardwood trees along Hollow Road. One

tree brought down several utility lines as it fell. From here, the

tornado lifted with only a few other trees being downed a little

ways from Hollow Road in a small wooded area.

Tropical Storm Isaias brought high winds, heavy rain, several tornadoes, and coastal flooding to the mid-Atlantic region, becoming the most impactful tropical cyclone to impact most of the region since Sandy in 2012. Flash flooding as a result of heavy rain caused two direct deaths from this event...one in Lehigh County and the other in Montgomery County.