If you haven’t been tuned into the news this holiday evening, you may have missed the National Weather Service having upgraded the winter storm watch for the metro area to a warning. The warning, in effect from 4 a.m. Sunday to 6 a.m. Monday, calls for snow accumulations of 6 to 10 inches, depending on the region and how the storm develops in the upcoming hours. Virginia Governor Bob McDonnell has also gone ahead and declared a state of emergency, anticipating up to 12” of snow and large amounts of holiday traffic. The District Department of Transportation expects to send out road salting crews later tonight, with full deployment tomorrow morning, as the accumulation develops.

And, as sure as gravity will make you slip and fall, organizing has started online for another flash snowball fight on the National Mall at 1 p.m., give or take depending on the fickle snow. Don’t forget to wear your gloves, hat and several light layers. Please leave the guns at home.