UPDATE: As of 12:00 p.m. Thursday, March 7, 2013, this blog will no longer be updated.
A storm bringing mixed precipitation and heavy rainfall is pounding the coastal areas of the Delmarva Peninsula and causing severe flooding.
Flooding in Delaware will intensify with the high tide cycle in the wee hours of Thursday morning.
From Virginia to Pennsylvania, reports are pouring in of downed trees, power outages in the hundreds of thousands and major roadways covered in snow and ice.
In the afternoon Wednesday, Virginia Governor Bob McDonnell declared a State of Emergency urging motorists to avoid travel as the storm continues.
Snow spread into New England, including Boston and Portland, on Wednesday night. On Thursday, eastern New England will be the primary target of the snowstorm with very high winds. Power outages will be a concern.
For the latest updates, scroll down to find our live blog.
9:17 a.m. EST Thursday: Snow is falling in Boston, with visibility reduced to half of a mile. Winds are gusting between 20 and 40 mph. For the time being, roadways are mostly wet but snow is accumulating on grass.
7:50 a.m. EST Thursday: The biggest impacts today will be from winds gusting between 40 and 50 mph from New York City to Boston. Power outages are possible in these areas. The best chance of accumulating snow is over the next few hours from Providence to Worcester to Boston.
6:30 a.m. EST Thursday: Light snow is falling at Kennedy International Airport.
5:46 a.m. EST Thursday: Here's a look at the latest snowfall map. Moderate/heavy snow is falling across southern Connecticut.
2:40 a.m. EST Thursday: Snow totals from yesterday: Frostburg, Md.: 12.5 inches; New Kensington, Pa.: 12.0 inches; Charlottesville, Va., 14.5 inches; Franklin, W.Va.: 24.0 inches.
1:06 a.m. EST Thursday: A wind gust to 55 mph just occurred in Nantucket, Mass.
11:46 p.m. EST Wednesday: Rain and snow pushing into Long Island, Connecticut and Rhode Island. Coastal areas are being lashed with wind and waves.
10:30 p.m. EST Wednesday: Moderate flooding is likely along the Delaware shoreline during the next high tide cycle during the wee hours overnight.
9:20 p.m. EST Wednesday: More than 135,000 electricity customers in the Delmarva area are still without power. In Virginia, more than 80,000 are still without power. In West Virginia, more than 4,800 people still have no electricity, and Maryland has at least 11,000 people with no power. More than 3,800 electricity customers in Delaware are still without power. More than 35,000 JCP&L, PSG&E and ACE customers in New Jersey have no power.
8:05 p.m. EST Wednesday: This video of flooding from Ocean City, N.J., was shared by YouTube user Rob Kelly.
7:00 p.m. EST Wednesday: Hatteras, N.C., is reporting 3 feet of water on Highway 12 due to coastal flooding. The road is impassable and the water is still rising.
6:16 p.m. EST Wednesday: Ten inches of snow was reported in Elkins, W.Va.
6:08 p.m. EST Wednesday: Coastal flooding caused 2 feet of water to flood Route 175 Main Street in Chincoteague, Va.
5:10 p.m. EST Wednesday: One foot of snow was reported in Deep Creek Lake, Md.
5:03 p.m. EST Wednesday: The rain in Baltimore, Md., is mixing with snow and sleet is falling in Wrightstown, N.J.
4:10 p.m. EST Wednesday: The chance for accumulating snow is over from Washington, D.C., to Philadelphia. Below is the current snow map for New England:
4:00 p.m. EST Wednesday: Heavy snow picture from Front Royal, Va., taken by Becky Smith:
3:10 p.m. EST Wednesday: At least 200,000 people are without power in Virginia. Throughout Delaware, more than 8,600 lost power. Maryland has at least 3,000 homes without power, and there are more than 23,400 people in New Jersey without power.
3:00 p.m. EST Wednesday: Water levels are 3.0 feet above normal, at minor flood stage, at Sandy Hook, N.J. Moderate flooding is possible with high tide early Thursday morning, according to Expert Senior Meteorologist Alex Sosnowski.
2:45 p.m. EST Wednesday: Snow totals so far include 20 inches at Fishersville and Crimora, Va.
2:00 p.m. EST Wednesday: Route 1 in Delaware between Dewey and Bethany is closed. Dunes have been breached and the area is flooding.
1:35 p.m. EST Wednesday: Roof damage and spotty power outages reported in Wildwood, N.J.
1:15 p.m. EST Wednesday: Winds have gusted to 71 mph at Lewes, Del.
12:55 p.m. EST Wednesday: The Governor of Virginia has declared a State of Emergency as more than 170,000 people are now without power during the snowstorm. Power companies are anticipating that it will take multiple days to restore power fully, the governor's press release states. Motorists are urged to stay off the roadways for the duration of the storm. More than 12 inches of snow has accumulated in some parts of the state.
12:08 p.m. EST Wednesday: The Virginia Department of Emergency Management reported via Twitter that 160,000 are without power amidst the storm in Virginia.
11:32 a.m. EST Wednesday: Trees and power lines down due to heavy snow in Nineveh, Pa.
10:20 a.m. EST Wednesday: Twelve inches of snow has fallen in Tucker County, W.Va., closing Route 219 between Hamilton and Thomas.
9:50 a.m. EST Wednesday: The West Virginia Department of Transportation has noted that the use of chains is recommended in areas of the state marked in red. Areas marked in orange represent severe conditions, and yellow indicates snow and ice removal in progress.
9:25 a.m. EST Wednesday: Power outages are mounting across the East. More than 65,000 have been reported in Virginia, with more than 15,000 in West Virginia.
8:20 a.m. EST Wednesday: Snow totals: 13 inches in Augusta, Madison and Rockingham counties in Virginia; 11.5 inches in Raphine, Va.; 10.5 inches in Fort Wayne, Ind.; and 10 inches in Quincy, Ohio.
8:00 a.m. EST Wednesday: Delayed report of thundersnow at 6:15 a.m. in Stafford and Orange counties in Virginia.
6:50 a.m. EST Wednesday: A mix of rain and snow began in D.C. Tuesday night. For the morning commute, roadways are mostly wet but not snow covered.
6:45 a.m. EST Wednesday: Philadelphia International Airport has now begun reporting delays due to weather.
5:55 a.m. EST Wednesday: Latrobe, Pa., reported 3.5 inches of snow in the last three hours, with snow still falling.
5:45 a.m. EST Wednesday: From Garrett County in Maryland, 10 inches of snow has been reported from the storm.
5:22 a.m. EST Wednesday: The precipitation falling in Philadelphia is coming down as a mix of rain and snow.
5:03 a.m. EST Wednesday: The furthest extents of the storm have reached Philadelphia, with precipitation currently falling as rain.
4:55 a.m. EST Wednesday: Just north of Lynchburg, Va., the city of Amherst has reported 2 inches of snow.
4:40 a.m. EST Wednesday: Snow is starting to wind down in the Columbus, Ohio, area. The highest local snowfall total came from just to the northwest in Dublin, with 6.5 inches of snow.
3:56 a.m. EST Wednesday: Bands of snow continue to crawl northward into central Pennsylvania, allowing for the first few snowflakes into Harrisburg.
3:50 a.m. EST Wednesday: Snow has also ended in Lawrence, Mich., where a storm snowfall total of 10.8 inches was reported.
3:45 a.m. EST Wednesday: Just northwest of Fort Wayne, snow has ended with a total of 11.9 inches of accumulation with 30-inch snow drifts.
3:15 a.m. EST Wednesday: More hefty snow totals have been reported from Ohio: 8.8 inches accumulating in Ossian and 8 inches in Sidney.
2:45 a.m. EST Wednesday: The first round of significant snow accumulations have come in from West Virginia: 6 inches so far in many cities of Greenbrier County.
2.20 a.m. EST Wednesday: A heavy band of snow is moving through southeastern Pennsylvania, allowing for the Pittsburgh area's snow accumulation to grow quickly to 2.5 inches.
2:05 a.m. EST Wednesday: Dublin, Ohio, is reporting new snow totals with 5.8 inches so far.
1:00 a.m. EST Wednesday: Snow is falling and starting to accumulate in the Pittsburgh, Pa., area; 0.5 of an inch already on the ground in Moon Township.
Note: The live blog will now convert to EST as this region will begin seeing major storm impacts.
11:28 p.m. CST Tuesday: Just south of Quincy, Ohio, 7 inches of snow has accumulated, with five of those inches falling in the last 2.5 hours.
10:15 p.m. CST Tuesday: Impressive snow totals continue to come in from eastern Illinois and northern Indiana: 6.2 inches reported in Northbrook, Ill., and 9 inches in Whitley County, Ind.
9:52 p.m. CST Tuesday: The front edge of the storm has made its way to the D.C. metro area where precipitation is falling as a mix of rain and snow.
7:28 p.m CST Tuesday: The snow is falling in Indiana; 2 inches of snow has fallen in LaGrange and 4 inches in Knox.
7:00 p.m CST Tuesday: The storm has ended at the Minneapolis International Airport, where a total of 9.3 inches of snow was reported.
6:04 p.m. CST Tuesday: Several inbound and outbound flights at the Chicago O'Hare International Airport have been canceled or delayed.
5:00 p.m. CST Tuesday: There is 7 inches of snow reported at O'Hare Airport in Chicago.
4:21 p.m. CST Tuesday: The NWS out of Indiana reported that there are numerous accidents across northern Indiana.
3:26 p.m. CST Tuesday: Heavy snow is now falling in Rock Falls, Ill. They have 6 inches of snowfall so far.
2:23 p.m. CST Tuesday: Moderate snow is falling in Rockford, Ill. They have 7.3 inches so far.
1:15 p.m. CST Tuesday: The heaviest snow from the storm is slamming the Chicago to Milwaukee corridor with visibility as low as one-quarter of a mile.
12:19 p.m. CST Tuesday: The storm has entered Indiana and is nearing Indianapolis. The worst of the storm will hit the city between 8 p.m. and 2 a.m.
11:35 a.m. CST Tuesday: "With this storm, high winds are spanning from the Dakotas to Texas," AccuWeather.com Expert Senior Meteorologist Henry Margusity said.
10:10 a.m. CST Tuesday: Snow and ice is spreading in northern Illinois. Yellow indicates patches of ice and snow, and red indicates snow- and ice-covered areas.
9:56 a.m. CST Tuesday: Snow has ended in What Cheer, Iowa, but blowing and drifting is occurring.
9:21 a.m. CST Tuesday: Recent snow totals: 4 inches in Lowden, Iowa; 8.8 inches in Inver Grove Heights; 3.0 inches in Galesburg, Ill.; 11 inches in Inkster, N.D.; 3.0 inches in Walcott, Iowa.
8:07 a.m. CST Tuesday: Snow remains light across Chicago at this time, but a line of heavier snow is impacting roadways in Peoria and Rockford, Ill., and Davenport, Iowa. Visibility is reduced to three-quarters of a mile in some areas.
7:16 a.m. CST Tuesday: Snow has begun falling across Chicago.
6:59 a.m. CST Tuesday: The Minnesota Department of Transportation reports difficult travel conditions along many Interstates which run through the Minneapolis area, including 1-35, I-94, I-394 and I-494. Along I-94 from MN 24 to before MN 241, blowing and drifting snow is problematic.
6:35 a.m. CST Tuesday: More than 400 outgoing flights from Chicago O'Hare and 376 incoming flights have already been canceled; 113 outgoing flights and 115 incoming flights had been canceled at Chicago Midway.
5:57 a.m. CST Tuesday: Major routes surrounding Minneapolis are snow covered. Drivers should exercise extreme caution on the morning commute. Seen below is I-94 at Tamarack Road, west of Minneapolis:
4:55 a.m. CST Tuesday: Latest snow report from Lakeville, Minn., just south of Minneapolis, is 7.0 inches. Moderate to heavy snow still falling.
4:05 a.m. CST Tuesday: Snow is rapidly building to the west of Chicago. Moderate to heavy snow falling near Davenport, Iowa.
2:45 a.m. CST Tuesday: Traffic camera from Grand Forks, N.D., shows roads are snow-covered and dangerous.
1:55 a.m. CST Tuesday: Snowfall up to 3.5 inches in Minneapolis.
1:30 a.m. CST Tuesday: 3.1 inches of snow in 3 hours fell across Rochester, Minn.
12:32 a.m. CST Tuesday: Mankato, Minn., has just reported 5 inches of snow on the ground. Moderate to heavy snow building across eastern Minnesota.
A wet start to the weekend across Spain with flooding rain threatening northwestern areas will turn into a chilly Valentine's Day.
A storm will bring snow and ice that will lead to slippery travel along a 1,500-mile swath from northern Arkansas and Georgia to Maine early next week.
The coldest air of the winter will plunge southward across much of the eastern United States and will feature single-digit and sub-zero temperatures in the Northeast during Valentine's Day weekend.
A blast of arctic air will be accompanied by flurries and even a localized wall of snow in some communities in the Northeast and parts of the Midwest at the start of the Valentine's Day weekend.
Heavy rain will raise the risk of flooding across more than a dozen states in the Southeast on Presidents Day to the East Coast on Tuesday.
The dry, summerlike heat sweeping Southern California will continue through the weekend into early next week.
Ifrane, Morocco (1935)
-11 degrees - coldest ever in Africa.
Lake Placid, NY (1980)
Finally some snow. Just in time for the opening ceremonies at the Olympic town.
Des Moines, IL (1990)
70 degrees, earliest ever at 70 of higher.