There was definitely a Severe Thunderstorm Warning issued. I saw it on CTPs site, WGAL, scrolling on my FIFA game I was watching, etc. Here's the text:
The National Weather Service in State College PA has issued a * Severe Thunderstorm Warning for... East central Lancaster County in south central Pennsylvania... * Until 445 PM EDT. * At 421 PM EDT, a severe thunderstorm was located over Gap, moving east at 25 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... New Holland, Gap, Churchtown, Intercourse, Blue Ball, Goodville, and White Horse. Radar has indicated rotation within this severe thunderstorm. Although a tornado is not immediately likely, tornadoes can develop quickly during severe thunderstorms. This includes The Pennsylvania Turnpike from mile markers 293 to 295. Stay inside a well built structure and keep away from windows. Very heavy rainfall is occurring with this severe thunderstorm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. Issued by NWS State College PA for Lancaster County.