Snowfall Predictions Increase As Winter Storm Warning Issued In PA

If you're planning to travel Friday, do it early. That's the message from the National Weather Service, which is continuing to predict a winter storm will bring as much as 8 inches of snow to eastern Pennsylvania.

A winter storm watch is in effect beginning Friday afternoon and going through 10 a.m. Saturday for Bucks County and several neighboring counties. However, areas around Philadelphia, which are currently not under the watch, are expected to see precipitation, according to the latest forecast.

Heavier snowfall is expected in northeastern Pennsylvania, where a winter storm warning is in effect for Monroe, Wayne and Pike counties. Snow will develop Friday afternoon, with the heaviest precipitation expected late afternoon through evening before winding down early Saturday, the weather service says.

"If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency," the federal agency said.

The warning is in effect from 1 p.m. Friday to noon Saturday.

Here is the latest snowfall accumulation estimate map:

The precipitation will begin as snow but mix with sleet by early evening, with areas north of Interstate 78 seeing mostly snow and those south of Interstate 78 seeing a greater mix of snow and freezing rain, the forecasters said.

"Persons should delay all travel if possible," the forecasters said. "If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination."

Bucks County and areas north and west could see up to 5 inches of snow, according to the weather service.

See the latest timing below.

Bucks County

Friday: Snow likely after 1 pm. Increasing clouds, with a high near 30. North wind 5 to 10 mph becoming east in the afternoon. Chance of precipitation is 60 percent. New snow accumulation of less than one inch possible.

Friday Night: Snow, possibly mixed with sleet, becoming all snow after 4 am. Low around 26. Northeast wind 5 to 10 mph. Chance of precipitation is 100 percent. New snow and sleet accumulation of 2 to 4 inches possible.

Saturday: A chance of snow. Cloudy, with a high near 33. Northeast wind 5 to 10 mph. Chance of precipitation is 40 percent. New snow accumulation of less than a half inch possible.

Saturday Night: Mostly cloudy, with a low around 21.

Philadelphia area

Friday: Snow likely after 1 p.m., mixing with sleet after 4pm. Increasing clouds, with a high near 31. North wind 5 to 10 mph becoming southeast in the afternoon. Chance of precipitation is 70 percent.

Friday Night: Snow, freezing rain, and sleet before 4 a.m., then snow and freezing rain. Low around 27. East wind 5 to 10 mph. Chance of precipitation is 100 percent. New ice accumulation of less than a tenth of an inch possible. New snow and sleet accumulation of 1 to 2 inches possible.

Saturday: A chance of snow and freezing rain before 10 a.m., then a chance of snow between 10 a.m. and 4 p.m., then a slight chance of freezing rain after 4 p.m. Cloudy, with a high near 35. Northeast wind 5 to 10 mph. Chance of precipitation is 30 percent.

Saturday Night: Mostly cloudy, with a low around 24.