Severe Storm Watch Issued Saturday Across Eastern PA

Strong storms are possible Saturday afternoon and evening across the Philadelphia region. The National Weather Service has issued a Severe Thunderstorm Watch for the entire region. The watch goes through 7 p.m.

AccuWeather forecasters say the storms are "fast moving." People spending time outdoors should closely monitor the weather for rapidly changing conditions. "Move indoors at the first rumble of thunder," AccuWeather said.

In the Philadelphia region, the storms are most likely to arrive between 4 and 5 p.m., according to The Weather Channel.

The storms will come with high winds and even small hail is possible, AccuWeather said.

"The fast pace of the storms alone can contribute to wind gusts strong enough to knock over poorly rooted trees, break large tree limbs and cause sporadic power outages," according to AccuWeather Meteorologist Bill Deger.

The good news is that the storms will cause a cool down.

The air should be 8 to 15 degrees cooler Sunday compared to Saturday, AccuWeather said.

Here is the local forecast:

This Afternoon: Showers and thunderstorms likely, mainly after 4pm. Partly sunny, with a high near 93. West wind 10 to 14 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight: Showers and thunderstorms likely before 10pm, then a slight chance of showers between 10pm and 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 69. West wind 3 to 7 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday: A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 84. Northwest wind 7 to 17 mph. Chance of precipitation is 20%.

Sunday Night: Mostly clear, with a low around 63. North wind 7 to 11 mph.

Monday: Sunny, with a high near 86. Northwest wind around 7 mph.

Monday Night: A chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 68. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tuesday: A chance of showers before 8am. Mostly sunny, with a high near 89. Chance of precipitation is 30%.