It’s time to Wax the Sleds and get the Snow Plows Ready
Steady rain will develop across the DC Region this evening, mixing with and changing over to Snow between midnight and 3AM. The Snow will be heavy at times between 3AM and 9AM with snowfall rates of one to two inches per hour possible, especially along and south of interstate 66 in Northern Virginia and route 50 in Maryland (including D.C.).
The snow will begin to taper off during the afternoon hours, ending from west to east between 3 and 5PM.
The forecast models continue to increase the QPF (amount of liquid/moisture) that is expected to fall overnight into the day on Monday. Check out the latest European model which drops nearly 1″ on D.C. Typically 1″ of rain is equivalent to 10″ of snow if the temperatures are cold enough; regardless, despite some of the melting that will occur due to the warm antecedent conditions, this will be our first major winter storm we have seen since January of 2016.
Latest European Snowfall Accumulation Potential
Before you start celebrating the map above, some of these totals will come down due to sleet mixing in along the Chesapeake Bay and across southern Maryland before the change over to all snow in those areas. Also, snow will melt on contactt when it hits the warm ground. Despite the melting, I do believe this will end up being a plowable snow across the entire region, especially on secondary roadways where travel will be treacherous as temperatures plunge into the upper 20s!
Tim’s Final Snow Map