PHILADELPHIA - A thin band of powerful storms will sweep across the Delaware Valley on Sunday night with the potential for heavy downpours and damaging winds.The National Weather Service has issued a Severe Thunderstorm Warning for the following counties in Pennsylvania and New Jersey until 8 p.m:PENNSYLVANIANEW JERSEYAdvertisementDELAWAREThe National Weather Service said the storms could produce gusts between 50-60 MPH, meaning tree damage and power outages are possible.FOX 29's Weather Authority predicts the storms will impact the Philadelphia area between 7 p.m.
and 10 p.m. before clearing eastward over New Jersey. Calmer conditions will follow the storms. Monday will be sunny and cool with highs in the 50s.