A low pressure system racing northward through the Carolinas will bring alternating rounds of rain and snow to the D.C. region from late Sunday morning into the overnight hours on Monday. Here’s what you need to know.
A low pressure system racing northward through the Carolinas will bring alternating rounds of rain and snow to the D.C. region from late Sunday morning into the overnight hours on Monday.
While most storms recently have either been all snow, rain or a wintry mix, Sunday’s system is carrying enough warm air with it to make forecasts challenging when it comes to determining exactly where the rain-snow line will set up. Expect anywhere from a coating to an inch in D.C. and the suburbs by daybreak Monday, with higher amounts to north and west.
What NBC Washington’s Lauryn Ricketts called a “tug of war” between a colder air mass over the Great Lakes and a warmer current from the Gulf of Mexico will lead to precipitation bouncing back and forth from rain to snow somewhat unpredictably starting late Sunday morning.
“D.C. will be playing tug of war between cold and warm air, therefore the Washington area will likely be changing back and forth from snow to rain through the duration of this evening,” NBC meteorologist Lauryn Ricketts said. “Areas north and west will be all snow, and locations south and east will stay all rain.”
The highest snow totals were forecast for northern Maryland, where as of Saturday morning confidence was greatest that temperatures would stay below freezing for long enough to allow significant accumulation. Likewise, those areas were under Winter Storm Watches for heavy snow starting late Sunday.
Frederick and Washington counties into the Potomac Highlands of West Virginia were in store for 4 to 7 inches into early Monday according to NBC4’s forecast, while D.C. and Baltimore were only in for about an inch, at best.
“It would end as some light snow and drizzle for even areas south and east, but the last little gasp of this fast moving storm should not be an issue for the roads south and east of D.C.,” Ricketts said. “However, roads north and west will likely be snow covered with some wet roads with slush around the D.C. area.”
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