Flash flood warnings issued for Lewisburg, Mifflinburg and New Columbia

Flash flood warnings remained in effect until 8:30 p.m. Sunday for Lewisburg, Mifflinburg and New Columbia after Hartleton 911 logged a flooded basement and multiple closed roads. By Monday, an additional flood warning had been issued for Union and Snyder counties, keeping much of the region under watch as another round of storms moved through central Pennsylvania.

Basements were taking on water, and several roads were already shut down.

The flood danger came after a stretch of unsettled weather across central Pennsylvania that left the region repeatedly exposed to heavy rain. On July 28, a forecast for more rain, severe storms and flash floods warned that a cluster of showers and thunderstorms was moving east-southeast across the state. A National Weather Service flash flood warning product for State College listed between 2 and 4 inches of rain already fallen in the warned area, another 1 to 2 inches possible, and flash flooding already occurring.

More than 20 Pennsylvania counties were under a flood watch on July 18. In late July, storms dumped several inches of rain in parts of the region, a flood watch was called off early the next day, and flash flooding hit Hersheypark on July 29.

Roads can close quickly, basements can flood before rain eases, and warning lines can shift from one county to the next as storm bands redevelop. With another flood warning issued Aug. 3, low-lying streets, culverts and homes near creeks remained the places most likely to take the next hit if more storms formed over the county.