This massive snowstorm shutdown the local D.C. area, along with the entire northeast Megalopolis during the President's Day Weekend of February 15-17, 2003.
The average snowfall from Washington to Boston may have equaled the great storm of January 1996, which has been thought to be the biggest Megalopolis snowstorm in history for combined snow totals from all of the big cities of the Northeast.Between 2 and 3 a.m. Sunday morning, heavy snow explosively broke out across the entire Metro region. Whiteout conditions were noted over the next several hours, with snowfall rates exceeding 2" per hour. By 7 a.m., 6-10" of snow had already fallen in the D.C. area. Moderate-to-heavy snow continued all day Saturday without abatement.
Suddenly, around 8 p.m., the snow turned to sleet, even in the western suburbs. Sleet continued all Sunday night, sometimes at a moderate to heavy rate. The sleet did not add much to the total accumulations, but made for a very dense mass on the ground, which was quite difficult to shovel.
Finally, around mid-morning Monday, the precipitation ended as a brief period of moderate to heavy snow.
Officially, 16.7" of snow fell at Reagan National, which was Washington's 5th greatest storm on record. 22.1" fell at Dulles Airport, their third greatest storm. At BWI, an incredible 28.2" fell, breaking the all-time Baltimore record set during the Knickerbocker Storm of January 1922.
Generally 20-28" fell in the western, northern and northeast suburbs, and 15-20" fell from D.C. south. The eastern suburbs fared well, with Annapolis recording 23".