Winter Weather Timeline Shifts: Latest Forecast For Eastern PA

EASTERN PENNSYLVANIA – The entire Philadelphia region is under a winter weather advisory, as a storm with snow and mixed precipitation is projected to arrive Monday in Eastern Pennsylvania. The storm, expected now to hit later than previously estimated, is likely to arrive after 1 p.m., the National Weather Service said.

The winter weather advisory is in place from 1 p.m. Monday through 10 a.m. Tuesday.

The National Weather Service is predicting mixed precipitation of snow and ice, with snow accumulations of up to 2 inches possible. Up to two-tenths of an inch of ice could accumulate.

"Plan on slippery road conditions. The hazardous conditions could impact the Monday evening and Tuesday morning commutes," the National Weather Service said in its advisory.

Snow will begin in the afternoon and will mix with sleet and freezing rain by the evening.

Precipitation will gradually change to rain overnight into Tuesday morning as surface temperatures climb above freezing. Rain is expected to continue through Tuesday before tapering off Tuesday night.

Here are the alerted areas:

Here is what you should expect:

• Though snow accumulations are expected to be below 2 inches, the combination of sleet on top of snow may create very slippery driving conditions, especially mid-to-late Monday morning.
• Snow and ice amounts will be highly dependent on the timing of precipitation type changes.
• Areas in the advisory are expected to have very slippery conditions due to ice/sleet coming on top of snow.
• The greatest impacts are anticipated to be north and west of I-95.
• Bridges and overpasses will be especially slippery.
• Gusts up to 25 mph are possible Tuesday, which could lead to minor tree damage in areas where ice has accumulated on the trees.

The National Weather Service said ice and wind could be a problem on Monday and Tuesday:

Certain areas could experience more trouble with ice than others:

Here is how much snow is expected:

Once the snow and ice depart by Tuesday, expect clear skies with little chance of precipitation through the weekend.

Here is the forecast:

Today: Rain and snow. High near 36. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 80 percent. Total daytime snow accumulation of less than a half inch is possible.

Tonight: Rain, snow and freezing rain before 3 a.m., followed by rain, snow and sleet between 3 a.m. and 4 a.m., then rain after 4 a.m. Low around 33. East wind 6 to 8 mph. Chance of precipitation is 100 percent. New ice accumulation of less than a 0.1 of an inch is possible. New snow and sleet accumulation of less than a half inch is possible.

Tuesday: Rain mainly before 4 p.m. High near 38. Northeast wind 7 to 9 mph becoming north in the afternoon. Chance of precipitation is 100 percent. New precipitation amounts between a half and three-quarters of an inch possible.

Tuesday night: A chance of rain and snow showers, mainly between 10 p.m. and 1 a.m. Mostly cloudy, then gradually becoming mostly clear, with a low around 29. Northwest wind 7 to 9 mph. Chance of precipitation is 30 percent. Little or no snow accumulation is expected.

Wednesday: Mostly sunny, with a high near 37. West wind 7 to 14 mph, with gusts as high as 34 mph.

Wednesday night: Partly cloudy, with a low around 17.

Thursday: Sunny, with a high near 26.

Thursday night: Partly cloudy, with a low around 18.

Friday: Sunny, with a high near 35.

Friday night: Partly cloudy, with a low around 24.

Saturday: Partly sunny, with a high near 39.

Saturday night: Mostly cloudy, with a low around 29.

Sunday: Partly sunny, with a high near 44.