How pancake ice formed on the Potomac River near Great Falls, Virginia
The rare circular ice slabs spun, collided and collected in large eddies because of the prolonged cold weather.
来自MSN2 天
DC emergency crews search the Potomac River deadly plane crash
DC Emergency vehicles and crews search the Potomac River near Reagan Washington National Airport after deadly plane crash ...
Video shows plane collide with helicopter over Potomac River
'Smallville' star Tom Welling was arrested over the weekend.
More than 40 bodies are recovered as investigation continues at the site of fatal plane crash
Divers are expected to return to the Potomac River on Friday as part of the recovery and investigation after a midair collision killed 67 people.
CNN2 天
Videos appear to show midair collision over Potomac River
Exclusive: CNN obtains videos showing new angles of DC plane crash ...
Passenger jet with 64 aboard collides with Army helicopter while landing at Reagan Airport ...
A passenger jet collided Wednesday with a military helicopter while landing at Ronald Reagan National Airport near Washington ...
WBAL-TV2 天
Video appears to show plane, helicopter collide over Potomac River
Warning: Viewer discretion is advised. Video above shows plane collide with helicopter over Potomac River.All takeoffs and landings from the airport near Washington have been halted.Rescue teams ...
WorkBoat23 小时
NOAA expands real-time monitoring on Hudson River
NOAA and the New York State Department of Environmental Conservation (NYSDEC) have launched the Hudson River Estuary Physical ...