Hazardous Weather Outlook, Flash Flood Watch Friday Across Philly Region

It could be rainy and wet today, but good news: the sun comes out in time for the weekend. Full forecast here:

0By Updated August 18, 2017
Hazardous Weather Outlook, Flash Flood Watch Friday Across Philly Region

A Hazardous Weather Outlook and Flash Flood Watch is in place across the Philadelphia region, including in Bucks, Chester, Delaware, Montgomery, Philadelphia counties, as well as the Lehigh Valley.

The Flash Flood Watch begins at 2 p.m. and goes through Friday night. Torrential downpours throughout the day are expected, according to forecasters.

"Multiple rounds" of showers and thunderstorms should be expected through the day.

"While flash flooding is not anticipated with the initial round this morning, locally higher rainfall amounts of 1 to 2 inches are possible, and will help saturate the ground for the next round of storms. Torrential downpours with storms that develop this afternoon and evening could produce rainfall rates greater than 2 inches per hour," the National Weather Service said in the Flash Flood Watch alert.

Isolated rainfall totals of 3 to 6 inches are possible in some areas.

The rain could result in rapidly rising water levels along streams and creeks and in areas of poor drainage. "Significant" roadway flooding is also possible, so be careful when traveling.

Area residents should be aware that basement flooding is possible due to heavy rain falling on soils already saturated from previous storms. "If your home has a history of basement flooding, monitor your sump pump for proper operation and if possible, direct outside water flow away from your house," the NWS advises.

The good news is, the sun should come out in time for the weekend.

Here is the local forecast:

Today: A slight chance of showers and thunderstorms after 3pm. Mostly cloudy, with a high near 88. Southwest wind 7 to 9 mph. Chance of precipitation is 20%.

Tonight: Showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Some storms could be severe, with damaging winds and heavy rain. Low around 72. South wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.

Saturday: Mostly sunny, with a high near 88. West wind 5 to 9 mph.

Saturday Night: Partly cloudy, with a low around 67. West wind around 6 mph.

Sunday: Sunny, with a high near 87. Calm wind becoming west around 6 mph in the afternoon.

Sunday Night: Mostly clear, with a low around 65.

Monday: Sunny, with a high near 88.