The center of Tropical Storm Elsa was about 65 miles west of Norfolk, Va., as of 8 p.m. Thursday.
The storm's maximum sustained winds were around 50 mph and it was moving northeast at about 21 mph, according to the National Weather Service.
A tropical storm warning for areas between Little River Inlet in South Carolina and Surf City, N.C. has been lifted.
But warnings remained in place for the Atlantic coast between there and Nantucket, Mass.
Elsa is expected to continue its northeast track over the next two days, reaching Canada by Friday night or Saturday.
The National Weather Service advised that Tropical Storm Elsa's heavy rains could cause limited flash and urban flooding as it continues blowing north through Friday.
On Twitter, people in New York City were already posting videos showing flooded subway stations Thursday afternoon.
And the NYPD reported that severe flooding closed the Major Deegan Expressway for a time.
Tropical storm conditions are expected to reach New York and southern New England by Friday, the NWS advised.
At 2 p.m. ET, the center of Tropical Storm Elsa was located over North Carolina about 25 miles southwest of Raleigh.
The storm is moving toward the northeast near 20 mph and was expected to continue with an increase in forward speed during the next couple of days.
Elsa's maximum sustained winds are near 45 mph with higher gusts and tropical-storm-force winds extend outward up to 115 miles from the center, according to the NOAA NWS National Hurricane Center (NHC).
Elsa will continue moving over North Carolina, passing near the eastern mid-Atlantic states by Thursday night and shifting over or near the northeastern U.S. on Friday.
Some strengthening is possible Thursday and Friday and the storm is forecast to become a post-tropical cyclone by Friday night.
The system continues to move over Atlantic Canada by Friday night and Saturday.
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In an update, the NOAA NWS National Hurricane Center wrote on Facebook Thursday that Tropical Storm Elsa would bring heavy rainfall that could result in limited flash and urban flooding across North Carolina and Virginia.
The agency said that heavy rainfall from the Mid-Atlantic into New England through Friday could also leading to considerable and urban flooding.
Additionally, tropical storm conditions are expected across parts of the North Carolina coast and mid-Atlantic coast on Thursday by the afternoon or evening.
By Friday, tropical storm conditions are expected in portions of the southern New England states and New York.
"Gusty winds are expected over portions of Atlantic Canada Friday night and Saturday, the NHC said in the update.
At 11 a.m. ET, Tropical Storm Elsa was centered inland over North Carolina about 80 miles southwest of Raleigh, moving toward the northeast near 20 mph.
The storm had maximum sustained winds near 45 mph with higher gusts and tropical-storm-force winds extending out to up to 115 miles from the center.
Elsa was forecast to increase in forward speed during the next couple of days, heading over South Carolina and North Carolina and passing by the eastern mid-Atlantic states on Thursday.
Some strengthening remains possible on Thursday and Friday and Elsa is expected become a post-tropical cyclone by Friday night.
Tropical storm conditions are expected over portions of the coastal Carolinas on Thursday morning and along the mid-Atlantic coast by the afternoon and evening.
At 8 a.m. ET, Tropical Storm Elsa was centered inland over South Carolina about 90 miles west of Florence and was moving toward the northeast near 18 mph -- a "general motion" that the National Hurricane Center (NHC) said was expected to continue with an "increase in forward speed" over the next couple of days.
The storm's maximum sustained winds are near 40 mph with higher gusts and tropical-storm-force winds extend outward up to 115 miles.
Tropical storm winds are expected to spread northward over northeastern states by Friday, with non-tropical gale warnings in effect for parts of the U.S. coast north of the agency's Tropical Storm Warning area and gale conditions there late Friday.
Elsa is forecast to pass near the eastern mid-Atlantic states by Thursday night and move near or over the northeastern U.S. on Friday.
"The system should move over Atlantic Canada by Friday night and Saturday," the NHC said in a Facebook post.
Some re-strengthening is possible Thursday night and Friday as the system moves and Elsa is forecast to become a post-tropical cyclone Friday night or Saturday.
Elsa is expected to produce rain that could result in limited-to-considerable flash and urban flooding, as well as isolated minor river flooding and the threat or tornadoes will extend across the eastern Carolinas, southeast Virginia and coastal portions of the Mid-Atlantic to southern New England.
The Federal Aviation Administration (FAA) warned Wednesday of potential flight delays due to Tropical Storm Elsa.
In a tweet, the agency said the storm would bring severe weather to the Tampa International Airport and up the East Coast
"Tropical Storm #Elsa will continue to bring heavy rain and wind to parts of Florida today. Check with your airline for your flight status before leaving home," the FAA wrote.
Tropical Storm Elsa officially made landfall on Wednesday, but the storm has since weakened.
Still, Elsa is expected to bring rain, wind and potential tornadoes up the Southeast and mid-Atlantic coasts over the next couple of days.
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Though weakened, Tropical Storm Elsa killed at least one person in Florida on Wednesday.
10 others were injured at a southeast Georgia Navy base when a possible tornado struck a park for recreational vehicles.
Flooding downpours drenched coastal areas and the storm caused several tornado warnings and more tornadoes were possible Thursday from southeastern Georgia into the coastal plain of South Carolina.
Power was knocked out for about 35,000 homes and businesses on either side of the Georgia-Florida state line.
The National Hurricane Center said Thursday that Elsa's maximum sustained winds are now just near 40 mph with higher gusts and that tropical-storm-force winds extend outward up to 115 miles.
The storm made its way into southern South Carolina early Thursday and will pass over North Carolina later in the day, move near the eastern mid-Atlantic states by the evening and near or over the northeastern U.S. on Friday.
Some re-strengthening is possible Thursday night and Friday.
The coasts of Georgia and South Carolina were under a tropical storm warning and forecasters said Elsa would remain a tropical storm into Friday.
The Associated Press contributed to this report.
Tropical Storm Elsa's center has moved into southern South Carolina on Thursday, according to the National Hurricane Center’s 5:11 a.m. ET advisory.
The post said affected residents may experience heavy rainfall and possible flash flooding.
Elsa seemed to spare Florida from significant damage, though it still threatened flooding downpours and caused several tornado warnings. The coasts of Georgia and South Carolina were under a tropical storm warning. Forecasters predicted Elsa would remain a tropical storm into Friday, and issued a tropical storm watch from North Carolina to Massachusetts.
Scattered power outages were being reported along Elsa’s path Wednesday evening, with about 35,000 homes and businesses on either side of the Georgia-Florida state line without electricity, according to the website poweroutages.us.
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A suspected tornado that blew through a Georgia Nava base left "multiple" people injured and damaged several buildings, according to reports.
"There are reports of multiple injuries and damage to multiple recreational vehicles in the base RV park, and also reports of damage to buildings and structures on the installation," the Naval Submarine Base Kings Bay in the southeastern part of the state wrote on Twitter. "Many of the injured were transported to local medical facilities for treatment."
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The National Hurricane Center said in an update Thursday at 1:55 a.m. ET that Tropical Storm Elsa is currently over eastern Georgia and is dumping rain on parts of the South Carolina coast.
Fox 5 Atlanta reported that a tornado touched down at Naval Submarine Base Kings Bay on Wednesday evening, injuring multiple people and damaging structures.
"As many as 10 people have been injured," a commander at Submarine Group 10 at the naval base, told FOX Television Stations. "All of those injured have been classified as non-serious or minor injuries."
Tropical Storm Elsa's 45 mph maximum sustained winds were centered over southern Georgia as of 8 p.m. Wednesday.
The storm was moving north-northeast at around 14 mph, but is expected to turn northeast overnight and pick up speed by late Thursday after passing through the Carolinas, according to the National Weather Center.
Areas between southern Georgia and South Carolina's Lowcountry are expected to see 3 to 5 inches of rain, with up to 8 in some areas. The rest of the East Coast up to New England could see between 1 and 3 inches.
Coverage for this event has ended.