Naturally acidic tannic acid-stained waters downstream of Black Moshannon Lake.

Quarter-sized hail after a particularly intense thunderstorm in State College, PA.

This image with the observatory in the foreground was taken at the Grier School in Tyrone, PA on September 3, 2016.  It’s an all-girls boarding school. The image captures composite pictures (about 100) taken over the course of an hour.

Artificially constructed wetlands due to ones destroyed during the construction of I-99 in Pennsylvania.

This lightning was captured during a thunderstorm on August 13, 2016. This was the same time that the city of Philadelphia was experiencing its fifth heat wave of the summer.

Bear Run, coursing through the woods of Fayette County. In the background, Pottsville formation rocks (http://mrdata.usgs.gov/geology/state/sgmc-unit.php?unit=PAPAp;6) like those used in the exterior of Frank Lloyd Wright's iconic Fallingwater.

This lightning was captured during a thunderstorm on August 13, 2016. This was the same time that the city of Philadelphia was experiencing its fifth heat wave of the summer.

August 25, 2016, marks the 100th anniversary of the National Park Service. Did you know that the smallest of all the national parks is right here in Pennsylvania? That honor belongs to the Thaddeus Kosciuszko National Memorial in Philadelphia. Kosciuszko was a military engineer from Poland that made significant contributions to the American Revolution. The park is only 0.02 acres in size.