8:57 p.m. Tornado warning until 9:30 p.m. for Frederick, Carroll, western Baltimore and NW Howard counties, including Eldersburg, Westminster, Hampstead and Manchester.
8:45From The Aegis: The storm ripped through Harford County, doing some of the most severe damage of the triangular area bordered by Belair Road, Harford Road and Route 152. What witnesses said was a tornado uprooted some trees, sheared the tops off some others, tore down power lines, collapsed two small buildings, sent at least one person to Maryland Shock Trauma Center with injuries and brought much of the greater Fallston area to a halt.
"It sounded just like a freight train," Mary Corun, who lives off Belair Road right across form the Fallston Walmart, said. "We headed right down to the basement."
Two small buildings were flattened and the busy commercial district of Route 1 between Route 152 and Harford Road was darkened on what usually would have been a busy Friday evening. Part of Harford Road between Routes 152 and 1 was closed for a short time until fallen trees were cleared from the roadway. Traffic lights were still out at 8:30 p.m. at some of Harford County's busiest intersections.
8:30 p.m. Thousands of commuters were delayed when Union Station lost power around 5 p.m , MTA spokesman Terry Owens said. Trains started moving again around 8 p.m., but officials expected delays to continue throughout the evening, he said.
8:15 p.m. National Weather Service meteorologist in charge Jim Lee said they received reports of black funnel clouds at BWI and in Severna Park this evening. And based on initial damage reports, they suspect a tornado hit the Bel Air area. 8:10 p.m. Tornado watch remains in effect until 2 a.m.
7:30 p.m. Tornado warning until 7:45 for Baltimore City, county and Anne Arundel, impacting Fells Point, Locust Point, Brooklyn Park and Ferndale.
7:20 p.m.Severe thunderstorm warning until 8 p.m. for parts of southern Baltimore county and city, NW Arundel, eastern Howard.
7:10 p.m. BGE reports about 18,300 customers out around central Maryland.
7:05 p.m. From The Aegis: The severe storms coming through the area this evening have already damaged some property in Fallston, and several injuries have been reported. Motorists are warned to avoid Route 1 and Harford Road between Kingsville and Bel Air, as the area around Milton Avenue and Bel Air Road has been severely impacted by the storm, fire and emergency service spokesman Dave Williams said shortly before 7 p.m. Four reported injuries are being treated by EMS officials, Williams said. The Emergency Operations Center was partially activated at about 6:15 p.m. County spokesman Bob Thomas said two buildings were damaged on Route 1, including the Bel Air Auto Palace. Widespread power outages in Fallston have also been reported. Nearly 3,000 power outages were reported as of 7 p.m.
7 p.m. Tornado warning until 7:30 p.m. in NW Arundel, SE Howard, northern PG.
6:40 update: Heavy rains prompt flash flood warning until 9:30 p.m. for parts of Baltimore, Howard, Arundel, Prince George's and Montgomery, including Arbutus, Catonsville, Columbia, Ellicott City and Fort Meade.
6:02 update:Tornado warning issued for southern Baltimore County, Harford, northwest Arundel, and southeastern Howard until 6:30 p.m. Many areas also under flash flood watch or warning.
5:34 P.M. UPDATE: After a lull in the storms, two new tornado warnings have been issued: One is impacting Anne Arundel and Prince George's counties, affecting Crofton, Odenton, Fort Meade and Severn. A second warning was in central Frederick County.
5:01 P.M UPDATE: All tornado warnings in greater Baltimore have expired, though severe storms continue to move through. Departures at BWI are grounded through 5:30 p.m.
4:34 P.M. UPDATE: A tornado warning has been issued for the area around Elkridge, BWI Airport and Lansdowne. The cell is moving northeast toward Baltimore City.
4:26 P.M. UPDATE: The storm along the Carroll/Baltimore border has spawned another tornado warning, effective through 5 p.m.
4:24 P.M. UPDATE: A severe thunderstorm warning has been issued for Howard and Anne Arundel counties, including Elkridge, Columbia, Severn and BWI Airport until 4:45 p.m. Another severe storm warning was issued along the northern Baltimore/Carroll border, also until 4:45 p.m.
The storm cell that spawned tornado warnings in Carroll and nothern Baltimore counties has moved on to Pennsylvania, but a new tornado warning has been issued for northern Calvert County around the Waldorf area.
All Carroll County schools were scheduled to dismiss at 4:15 p.m., an hour and a half late because of the storms.
3:54 P.M. UPDATE: Severe storms continue to pass through Carroll County. The southern half of the county is under a severe thunderstorm warning with winds in excess of 60 mph and quarter-sized hail.
3:33 P.M. UPDATE: A new tornado warning has been issued for northern Carroll and Baltimore counties, affecting Hampstead, Freeland and Parkton, extending through 4:15 p.m.
The State Highway Administration is warning motorists to take caution during the evening commute. Drivers should not proceed through standing water, avoid downed power lines and use headlights.
Flights have halted from BWI Marshall Airport as well as Reagan National and Dulles in the Washington area.
3:19 P.M. UPDATE: Flash flooding and road closures have been reported in Frederick County, and flash flood warnings have been issued for Carroll County, western Howard County, northern Montgomery County and southern Frederick County. Already, 1-2 inches of rain have fallen, and another 1-2 inches could still come, according to the National Weather Service radio.
3:10 P.M. UPDATE: A new tornado warning has been issued for northwestern Howard County and southern Carroll County. Communities affected include Sykesville and Damascus. The warning extends until 3:30 p.m.
2:56 P.M. UPDATE: The tornado warning for the Mount Airy, Damascus, New Market and Westminster areas has been extended to 3:45 p.m. The National Weather Service is warning of quarter-sized hail.
Carroll County schools are holding all students from dismissal until the tornado warning has been lifted. All after-school activities have been canceled.
Many Howard County schools are doing the same, according to the Howard County Times, but no official ruling has been made.
2:45 P.M. UPDATE: The tornado warning is shifting toward the Westminster area, covering a swath of southern Carroll County, southeastern Frederick County, northwestern Howard County and northern Montgomery County.
2:38 P.M. UPDATE: The tornado warning has been extended to 3 p.m. Twitter reports and National Weather Service alerts indicate tornado risk around Mount Airy and Damascus.
2:25 P.M. UPDATE: A tornado warning has been issued for parts of Montgomery, Carroll, Frederick and Harford Counties near the Mount Airy and Green Valley areas, effective through 2:45 p.m.
The National Weather Service has issued a tornado watch for nearly all of Maryland, effective through 9 p.m.
Frederick County and western Maryland counties were the first to be placed under the watch at 1:30 p.m., and most of the rest of the state followed within half an hour. A tornado warning was issued for part of Amherst County in central Virginia just before 2 p.m.
A watch indicates that conditions could become ripe for tornado activity, while a warning indicates tornado activity spotted. The tornado watch does not include Worcester County on the lower Eastern Shore.
Southerly winds are helping push moisture toward an oncoming front, and strong wind updrafts could promote the risk of tornadoes, according to the Storm Prediction Center. Storms are forming ahead of the front across central Virginia and northeast into Maryland, the center's storm outlook says.
The storm center's forecast pits the possibility of tornado activity at 15 percent in parts of Maryland and northern Virginia.
Forecasters at the National Weather Service's office in Sterling, Va., echo warnings of possible isolated tornadoes and severe storms packing damaging winds and heavy rain.
Severe weather blogger Henry Margusity at AccuWeather.com is predicting a few tornadoes across the mid-Atlantic, winds with gusts up to 70 mph and hail up to 1.5 inches wide. AccuWeather's forecasters are live blogging the storms.
On the bright side, the severe weather is setting up the region for pleasant weather Saturday, as local meteorologist Eric the Red points out, with clear skies and highs in the 70s.