Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 91.17; Flight Crew Total 9879.23; Flight Crew Type 9879.23
Inflight Event / Encounter Wake Vortex Encounter
General None Reported / Taken
Environment - Non Weather Related; Procedure
On the RNAV Stadium Visual to runway 29 we were vectored behind an Airbus 321 on the ILS to 22R.  We joined the visual at GIMEE with the airport and the [A321] in sight.  We had been cleared to land prior to crossing GIMEE.  Tower reported winds calm; ATIS had winds 200/6.  Prior to SLIMR we were configured and slowing to approach speed.  At approximately 1;500 ft AGL I called for the landing check and called to the FO that [the A321] appeared to be crossing the numbers and spacing looked good.  Continued in LVAV/VNAV till the autopilot rolled us out on final at about 1;000 ft AGL.  At this point PAPI showed slightly high and corrected to visual glide path.  A rapid right roll was encountered just prior to touchdown causing contact of the right main. This slowed the roll but aircraft was still rolling right.  Immediate left aileron was applied along with deployment of the auto speed brakes quickly caused the left main to touch down.  Roll out was normal from this point.  Wing drop was so rapid that I thought the right gear leg had collapsed.  The event occurred so quickly that there was not even time to consider a go-around.  The application of power and lifting off again would likely only have exacerbated this situation placing us at a bank angle at low speed with an at the time unknown problem.  During debrief we determined that the event occurred just prior to the intersection with Runway 22R and was likely a wake turbulence event.  An ACARS generated report showed a max bank angle of 6.9 degrees with a predicted wing tip strike at a bank angle of 7.5 degrees.  The FO inspected the aircraft for possible damage; none was found.  The event was reported to Tower; but they did not seem concerned.  I contacted Clearance Delivery to get more information on the preceding aircraft.  CD took more interest and sounded like it would be reported.
Reporter stated intersecting runway wake encounter events were more unusual in his experience; but this one was quite severe.
B737NG Captain reported encountering wake turbulence shortly before touchdown on Runway 29 at EWR from an A321 on short final to Runway 22R.