Frigid conditions in Potomac
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The water temperature in the Potomac River is approximately 36 degrees amid the search and rescue effort.
The air temperature at the time of the crash was 50 degrees with winds gusting 25 to 30 mph.
All 67 people on board the plane and the helicopter were killed.
An American Airlines regional jet went down in the Potomac River near Washington, D.C.'s Ronald Reagan Washington National Airport after colliding with a U.S. Army Black Hawk helicopter on Wednesday night, with no survivors.
Sixty-four people were on board the plane, which departed from Wichita, Kansas. Three soldiers were on the helicopter.
The collision happened around 9 p.m. when the PSA Airlines Bombardier CRJ700 regional jet was on approach to the airport.
The water temperature in the Potomac River is approximately 36 degrees amid the search and rescue effort.
The air temperature at the time of the crash was 50 degrees with winds gusting 25 to 30 mph.
There were three Army soldiers aboard the Black Hawk helicopter, according to a defense official.
That would be the standard size of the crew for a helicopter of this type.
-ABC News' Luis Martinez
No senior Army leaders aboard the Black Hawk helicopter that collided with the regional aircraft, a defense official with knowledge of the investigation told ABC News.
-ABC News' Luis Martinez
Sean Duffy, who was confirmed as the secretary for the Department of Transportation on Tuesday, added a post acknowledging the crash on X.
In the post, he noted that he was posting from the headquarters for the Federal Aviation Administration in Washington, D.C.
"I am on site at the FAA HQ and closely monitoring the situation," Duffy wrote.