By Steven Strouss

PHILADELPHIA (CBS) — A Flash Flood Watch remains in effect through Friday morning as a stalled cold front brings additional showers and thunderstorms to the region. Downpours may cause creeks and streams to rise quickly and create ponding in poor drainage areas.  The intensity of thunderstorms will diminish overnight but numerous trees have already been toppled and power is out in many neighborhoods around the Delaware Valley.

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PHOTOS: Storm Damage Across The Delaware Valley

Heavy rain remains a threat because tropical moisture from Arthur will be pulled into the cold front as it slowly marches east.

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Meanwhile, Arthur has strengthened to a Category 2 Hurricane and is now packing winds of 100 mph. As of 10PM the center of the storm was about 90 miles southwest of Cape Hatteras, NC and was moving northeast at 15 mph. As Arthur spins by our coastline Friday morning, the emphasis of heavy rain will be in NJ and DE. Gradual improvement will occur Friday afternoon as Arthur pulls away and sunshine will return from west to east. Humidity will drop during the day but winds could turn gusty out of the north as high pressure builds in. Rip Currents and rough surf from Arthur will remain a major concern along area beaches so use caution and always swim in front of a lifeguard.

The rest of the holiday weekend looks great. Saturday and Sunday will feature plenty of sunshine with highs in the mid 80s. Nice conditions are expected in the Poconos and at the shore points with just slightly cooler temperatures. Next week, the heat and humidity return and temperatures will once again climb into the 90s.


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