Recent tweets (beginning about 21:45 UTC July 25) from the NTSB:
NTSB releases investigative update from the7/22 Southwest Airlines Boeing 737-700 landing at New York’s LaGuardia Airport.
Evidence from video & other sources consistent with nose gear making contact with runway before main gear of SWA 737.
The SWA flight data recorder on the airplane recorded 1000 parameters & 27 hours of data, including entire flight from Nashville to NY.
Flaps on SWA 737-700 were set from 30 to 40 degrees about 56 seconds prior to touchdown at LGA.
SWA: Altitude was 32 feet, airspeed was 134 knots, and pitch attitude was 2 degrees nose-up 4 seconds prior to touchdown. All approx.
At touchdown at LGA, the SWA 737's airspeed was approximately 133 knots and the aircraft was pitched down approximately 3 degrees.
After touchdown at LaGuardia, the Southwest 737-700 came to a stop within approximately 19 seconds.
A cockpit voice recorder group will convene tomorrow at NTSB laboratories in DC to transcribe the relevant portion of the flight.