Portions of the East will see more snow to start this week as a .There are still differences in forecast model guidance for this system, which leaves uncertainty for exactly where and how much snow may fall, however at this time it appears this early week system will not be a widespread, major storm system.

The snow in the East will be from a combination of upper-level energy moving through the aforementioned jet stream dip and a weak area of low pressure that will develop just off the East Coast early this week. This snow will follow quickly on the heels of Winter Storm Mars, which will continue to impact New England through early Tuesday.

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Winter storm watches have been posted by the National Weather Service in the mid-Atlantic, including Baltimore and Philadelphia. Farther west, winter weather advisories and winter storm warnings are posted in the Appalachians and upper Ohio Valley.

Winter Weather Alerts

(Winter weather alerts from the National Weather Service.)

Below is a look at the timing and the snowfall forecast for this latest round of winter weather.

Early Week Snow Forecast Timing

Through Monday Night:

Monday and Monday night, a widespread area of snow showers will extend from the Great Lakes into the Appalachians, mid-Atlantic and even possibly parts of the Southeast.Accumulations are possible Monday night from the upper Ohio Valley into the Appalachians, southern Pennsylvania, northern Virginia, northern Maryland, northern Delaware and southern New Jersey. This may cause slippery travel conditions Monday night.In parts of the mid-Atlantic, precipitation may start as rain before changing to snow.

Monday Night's Forecast

Tuesday:

Mainly light to locally moderate snow continues Tuesday into Tuesday night from the Great Lakes into the Appalachians and mid-Atlantic as low pressuredevelops and strengthens near the East Coast.There could be an enhanced corridor of moderate to locally heavy accumulating snow from Philadelphia to Baltimore and near or just north of Washington, D.C.Travel delays are possible on roads and at airports in the region.High temperatures will be up to 25 degrees below average from the Upper Midwest to Florida Tuesday and Wednesday, with temperatures possibly not reaching the freezing mark as far south as the Tennessee Valley.

Tuesday's Forecast

Wednesday:

Mainly light snow lingers from the Great Lakes into parts of the Northeast.Some enhanced areas of snow possible downwind of the Great Lakes snow belts.

How Much Snow is Expected?

Additional Snowfall Forecast Through Wednesday

(Note: This snowfall forecast does not include snow that has already fallen. Instead, this indicates additional snow yet to fall through the event.)

Up to 12 inches of snow is forecast in the Appalachians from south-central Pennsylvania to the North Carolina and Tennessee border. Parts of West Virginia could see more than a foot of snow.In the mid-Atlantic, snowfall amounts either side of 6 inches are possible in a corridor from southeast Pennsylvania and southwest New Jersey to portions of Maryland. This includes locations from near Philadelphia to Baltimore to just north of Washington, D.C.

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Jason Souza sweeps the snow from a driveway in New Bedford, Mass., during a snowstorm on Monday, Feb. 8, 2016. The second winter storm in four days to hit the Northeast is expected to bring blizzard conditions to Cape Cod and southeastern Massachusetts and leave behind as much as 18 inches of snow. (Peter Pereira/Standard Times via AP)