Powerful 2-Day Rainstorm To Hit Philly Area For Mother's Day Weekend: Forecasters

EASTERN PA — Heavy rain is expected to sweep across much of the region over Mother’s Day weekend, potentially leaving several inches of rain in the greater Philadelphia area, forecasters said.

The deluge, which is expected to arrive on Friday, will impact much of the eastern seaboard, with the band of strongest storms running in a sharp line from Chicago to the Jersey Shore, AccuWeather reports.

Some coastal flooding is possible along the Delaware River, the National Weather Service warns.

The storm will bring some chillier than normal temperatures into the region on Saturday night, with the low dropping to around 45, forecasters said.

The National Weather Service calls the front a "slow moving storm system" that "will bring a raw east wind & rain to the region starting on Friday, continuing through Saturday, finally ending on Mother's Day."

Up to a half of inch of rain on Friday, an inch on Friday night, three quarters of an inch on Saturday, and a quarter inch on Saturday night is possible, forecasters said. Showers are expected to continue in Sunday.

Here's the full forecast for the region:

Thursday

Mostly sunny, with a high near 73. East wind 5 to 10 mph.

Thursday night

Increasing clouds, with a low around 53. South wind around 5 mph.

Friday

Periods of rain, mainly after 11am. High near 63. East wind around 5 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

Friday night

Periods of rain. Low around 50. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

Saturday

Periods of rain. High near 54. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

Saturday night

Periods of rain before 2am, then showers likely after 2am. Low around 45. Breezy. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Sunday

Showers likely, mainly before 8am. Partly sunny, with a high near 57. Chance of precipitation is 60%.

Sunday night

Partly cloudy, with a low around 44.