WINTER STORM WATCH starts Sunday at 5 p.m. for the entire ABC 7 News viewing area. Click here for all the counties covered. For forecast updates and more, follow @SteveRudinABC7 on Twitter.
With an area of high pressure to the north ushering in colder air, temperatures will fall to the 30s overnight. After a dry start Sunday, clouds will increase ahead of a potent weather maker that promises to bring yet another round of wintry weather to most of the mid-Atlantic.
An area of low pressure will slide just to the south of the area late Sunday and into early Monday. Rain will likely begin around the D.C. area by late afternoon with a transition to a wintry mix by evening. Little or no accumulation will occur during this time period because of warmer air at the surface.
Warm air will eventually be replaced with colder air as the wintry mix transitions to snow. Snow will begin to stick during the late evening and overnight hours from west to east. During this time, accumulations may total one to three inches. Heavier amounts are likely for the Potomac Highlands and Shenandoah Valley where five or more inches are possible. Similar to the last storm, look for a sharp cut-off point along the Mason-Dixon line where lesser amounts are in the forecast. It is also important to note, and equally difficult to forecast where localized heaver bands may occur. These areas may see in excess of five or more inches.
Low pressure will exit Monday morning leaving behind lingering snow showers and highs only in the lower 30s.
For the latest weather headlines, stay with ABC 7 News, NewsChannel 8 and wjla.com. Join Good Morning Washington starting at 4 a.m. Monday.