Several Days Of Storms In Eastern PA Forecast

EASTERN PENNSYLVANIA — A pattern of thunderstorms will continue across the Philadelphia region into Thursday, before a cold front arrives with relief from the high humidity.

The National Weather Service has issued a Heat Advisory through Tuesday night. Additionally, a Hazardous Weather Outlook has been issued, as heavy rain and flooding is possible during thunderstorms Tuesday and Wednesday.

According to the NWS, there is a also chance of showers and thunderstorms after 1 p.m. Monday, and some could produce gusty winds.

A greater chance of severe storms is predicted on Tuesday. Storms Tuesday night could bring "heavy" rain, the NWS said.

"Localized cases of flash flooding and gusty winds will be the most likely severe threats, other than frequent lightning," said AccuWeather Meteorologist Tyler Roys.

"The most potent storms of the week look to move in with a cold front on Wednesday. Storms will be capable of producing hail, damaging winds and flash flooding," Roys said.

A cold front moving through the Midwest will reach the Northeast Thursday, causing humidity levels to plunge. High temperatures will drop into the 70s and lower 80s for Friday and the weekend ahead.

Here is the forecast:

Today: A chance of showers and thunderstorms, mainly after 1pm. Some of the storms could produce gusty winds. Partly sunny, with a high near 93. Heat index values as high as 100. Southwest wind 3 to 8 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight: A chance of showers and thunderstorms, mainly before 9pm. Some of the storms could produce gusty winds. Partly cloudy, with a low around 76. West wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tuesday: A chance of showers and thunderstorms after 2pm. Some of the storms could produce heavy rain. Partly sunny, with a high near 92. Heat index values as high as 100. North wind around 7 mph becoming south in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tuesday Night: A chance of showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy, with a low around 75. South wind 5 to 7 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday: Showers and thunderstorms likely, mainly after 2pm. Partly sunny, with a high near 92. Southwest wind 6 to 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday Night: Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 76. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 60%.

Thursday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.