Flooding Threat Persists In Philly Region After Heavy Storms

The threat of flooding continues throughout the Philadelphia region Monday as heavy storms dropped several inches of rainfall.

A flood watch remains in place until 11 p.m. Monday night as officials warn of the impacts of growing accumulation.

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"Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations," the National Weather Service said. "Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas."

Multiple rounds of showers are expected throughout the day, with thunderstorms possible after 2 p.m.

In the heart of thunderstorms, rainfall rates of 1 to 3 inches per hour are predicted, with localized amounts of 3 to 5 inches possible. That much rain would cause widespread flash flooding.

Numerous communities around the Philadelphia suburbs have already received two to three inches of rain, according to the latest totals from the National Weather Service.

Philadelphia has accumulated 1.4 inches, while Plymouth Township has 2.6 inches, Sadsburyville has 3.1 inches, Langhorne has 3.1 inches, and Yardley has 3.3 inches.

Precipitation will fade later in the evening, and Tuesday is expected to be clear, according to forecasters.

Storms could return on Wednesday, with showers likely and more rounds of thunderstorms threatening.

Authorities reminded drivers to always turn around if they encounter standing water.

Here's the full forecast, according to the National Weather Service:

Monday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2 p.m. Mostly cloudy, with a high near 85. Southwest wind around 10 mph. Chance of precipitation is 70 percent. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Monday Night
A chance of showers and thunderstorms before 7 p.m. Partly cloudy, with a low around 68. West wind around 5 mph becoming north after midnight. Chance of precipitation is 30 percent. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tuesday
Partly sunny, with a high near 86. Northeast wind around 5 mph.

Tuesday Night
A slight chance of showers after 2 a.m. Mostly cloudy, with a low around 69. East wind around 5 mph becoming calm. Chance of precipitation is 20 percent.

Wednesday
A chance of showers before 11 a.m., then a chance of showers and thunderstorms between 11 a.m. and 2 p.m., then showers likely and possibly a thunderstorm after 2 p.m. Partly sunny, with a high near 87. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60 percent. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday Night
Showers likely and possibly a thunderstorm before 8 p.m., then a chance of showers and thunderstorms between 8 p.m. and 2 a.m., then a chance of showers after 2 a.m. Mostly cloudy, with a low around 73. Chance of precipitation is 60 percent. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday
A chance of showers and thunderstorms after 2 p.m. Mostly sunny, with a high near 90. Chance of precipitation is 30 percent.

Thursday Night
A chance of showers and thunderstorms before 8 p.m., then a chance of showers between 8 p.m. and 2 a.m. Partly cloudy, with a low around 74. Chance of precipitation is 30 percent.

Friday
A chance of showers after 2 p.m. Mostly sunny, with a high near 90. Chance of precipitation is 30 percent.

Friday Night
A chance of showers before 2 a.m. Mostly cloudy, with a low around 74. Chance of precipitation is 40 percent.

Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 40 percent.

Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Chance of precipitation is 50 percent.

Sunday
A chance of showers. Mostly sunny, with a high near 89. Chance of precipitation is 30 percent.