Update, Dec. 26 11:55 a.m: The National Weather Service has downgraded its warning to a WINTER WEATHER ADVISORY for Prince George's County through 6 a.m. Monday, with 1-2 inches of snow predicted to accumulate. Wind gusts are expected to reach 30-40 mph this afternoon and evening, with temperatures dipping into the lower and mid-20s tonight.

The storm system continues to track towards the Atlantic coast and will impact points east, including Southern Maryland and the Eastern Shore, and then continue north as far as New England.

Update, Dec. 26 1:25 a.m.: A WINTER STORM WARNING remains in effect for Prince George's County from 6 a.m. Sunday to 6 a.m. Monday. Weather models are fairly consistent in their forecasts of 4-8 inches of snow in the county.

Snow will be heavy at times, and wind gusts of 30-40 mph will cause blowing and drifting snow, reduced visibility and treacherous road conditions.

"Unlike most storms we have in the area, this one will see more significant snowfall totals to the east of the District than to the west," according to NBC Washington meteorologist Kim Martucci.

Counties east of Prince George's may see even greater snowfall totals.

Update, 4:17 p.m.: The winter storm watch has now been upgraded to a WINTER STORM WARNING for Prince George's County, which is in effect from 6:00 a.m. Sunday to 6:00 a.m. Monday, according to the National Weather Service. Snow accumulations from 4 to 8 inches are expected. The storm is currently tracking up the Atlantic coast.

Original post, 11:30 a.m.: The National Weather Service has issued a WINTER STORM WATCH for Prince George's County from 3:00 a.m. Sunday through 6:00 a.m. Monday. A strong low pressure system has developed over the lower Mississippi Valley, and is expected to move through the region on Sunday.

Some weather models predict a foot of snow, while others forecast 1-5 inches with very windy conditions, WTOP reports. Higher accumulations are expected south and east of Washington, D.C. The storm watch includes all counties east of the Blue Ridge Mountains.

A winter storm watch is issued when there is the potential for significant snowfall and winter weather within 48 hours.

Stay tuned to Patch for weather updates.

Happy Holidays.