With temperatures well below freezing, treacherous road conditions will remain in the D.C. area Tuesday.
Temperatures were near zero at dawn; Dulles Internationl Airport set a new record for March 4 of zero degrees. Baltimore tied the March 4 record low from 1873 at five degrees.
Roads have remained frozen through the morning rush hour Tuesday -- give yourself plenty of time to travel if you plan on hitting the streets. Highs Tuesday will only be in the low 30s.
With that in mind, many area school districts have canceled classes Tuesday.
OPM has announced federal offices in D.C. are running under a two-hour delay Tuesday, as are D.C. Public Schools.
Prince George’s County Fire and EMS officials believe a woman in her 60s suffered a heart attack while shoveling snow in Bowie around 3:30 p.m. Monday. She was pronounced dead at a local hospital.
Virginia State Police troopers had responded to more than 1,100 traffic crashes across the state by 9 p.m. Monday.
On the other side of the Potomac, the Maryland State Highway Administration said most people are staying off the roads and only minor accidents have been reported.
In Prince George's County, a tractor trailer carrying tomatoes overturned Monday in the eastbound lanes of Route 50 near Lottsford Vista Road in Lanham, Md. Hazmat crews responded as the truck's saddle tank leaked diesel fuel.
The driver of the truck suffered non-life-threatening injuries.
In eastern Frederick County near Johnsville, a section of state Route 75 closed due to a power line brought down by a vehicle that slid on the snow-covered road into a utility pole, Maryland State Police said. Police closed about a half-mile between Keymar Road and Renner Road around 9 a.m.
In Charles County, a vehicle slid off Pomfret Road near Foxburrow Place and landed on its side in a small pond about 2 p.m., becoming partially submerged in water. The man driving was not hurt and no one else was with him.
"People are just not paying attention. They're going too fast for the road conditions. Even though the speed limit says 45 or 50, you need to drop it down to 10, 15 mph," one tow truck driver told News4's Megan McGrath.
The southbound lanes of 14th Street NW between H Street and Pennsylvania Avenue are closed due to icy conditions. The northbound lanes are open after having been closed earlier Monday between F and G streets.
The wintry weather has left many across the D.C. area frustrated.
"I've had enough. This is way too much. I've lived here 25 years, but I can't remember as many snow storms as this in one year. We've had them, but not as many as this," one resident told New4's Pat Collins.
Tourists sought whatever activities they could find. In the morning, the Supreme Court heard oral arguments inside a chamber packed with out-of-town visitors and legal wonks. By noon, crowds were growing at the National Air and Space Museum, the only Smithsonian institution that was open Monday.
Many localities announced snow emergencies, restricting on-street parking so plows can do their work. D.C.'s snow emergency was called off late Tuesday morning.
Some melting should occur Wednesday and Thursday with highs in the 30s, but another storm could arrive Thursday night or Friday, but it's too early to tell whether there will be rain, snow or a mix.
More than 2,800 flights in the United States were canceled as of Monday afternoon, according to flight tracking site FlightAware.com. The bulk of the problems were at airports in Washington, New York and Philadelphia, but “flight cancellations are stacking up all the way from the DC area on up to New England,” said Daniel Baker of FlightAware. There are more than 30,000 flights in the United States on a typical day.
Metro restored all normal bus service Tuesday at 1 p.m.
MetroAccess paratransit service will resume at noon Tuesday after also being suspended all day Monday. Ride On buses in Montgomery County resumed limited service at 3 p.m. Monday. Click here for more information on RideOn service.
Get the latest weather from NBCWashington.com:
The Associated Press contributed to this report.