Narrative:

[We] encountered uncommanded swerving during the high speed regime of takeoff. Around 110kts; 24kts below V1; the plane experienced a higher than normal vibration possibly in the nose wheel and a sudden swerve to the right. I was pilot flying and called the abort. During the deceleration; control was regained and kept the plane returned to centerline. The procedure was performed as briefed and as previously practiced in the sim by complying with the immediate action items. Once stopped; we ran all appropriate checklists; coordinated with the cabin crew; and established a plan of action. The decision was made to not attempt to taxi with snow and ice covering taxiways. We requested to remain on the runway until a tug could pull our aircraft back to a gate. O'hare tower; maintenance; dispatch; cabin crew and passengers were all kept in the loop and aware of the plan of action. It took about 40 minutes for a tug to hook up to the plane. We gate returned and had all luggage reloaded to a new aircraft that was available to use as a swap. The flight continued with the new aircraft with no other abnormal occurrences.there was winter weather affecting operations. O'hare tower when clearing us for takeoff requested [us to] expedite due to spacing with a landing aircraft on 28C. Other than the uncommanded swerving; there were no other signs of any mechanical issues that were obvious to the pilots. The swerving could have been caused by wake turbulence from the aircraft landing 28C. Unsure of the cause; I opted to be tugged back to the gate rather than taxi with snow and ice on taxiways.

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Original NASA ASRS Text

Title: EMB-145LR Captain reported the aircraft swerved suddenly during the takeoff roll possibly due to wake turbulence from a landing aircraft on an adjacent runway.

Narrative: [We] encountered uncommanded swerving during the high speed regime of takeoff. Around 110kts; 24kts below V1; the plane experienced a higher than normal vibration possibly in the nose wheel and a sudden swerve to the right. I was pilot flying and called the abort. During the deceleration; control was regained and kept the plane returned to centerline. The procedure was performed as briefed and as previously practiced in the sim by complying with the immediate action items. Once stopped; we ran all appropriate checklists; coordinated with the cabin crew; and established a plan of action. The decision was made to not attempt to taxi with snow and ice covering taxiways. We requested to remain on the runway until a tug could pull our aircraft back to a gate. O'Hare Tower; Maintenance; Dispatch; Cabin crew and passengers were all kept in the loop and aware of the plan of action. It took about 40 minutes for a tug to hook up to the plane. We gate returned and had all luggage reloaded to a new aircraft that was available to use as a swap. The flight continued with the new aircraft with no other abnormal occurrences.There was winter weather affecting operations. O'Hare tower when clearing us for takeoff requested [us to] expedite due to spacing with a landing aircraft on 28C. Other than the uncommanded swerving; there were no other signs of any mechanical issues that were obvious to the pilots. The swerving could have been caused by wake turbulence from the aircraft landing 28C. Unsure of the cause; I opted to be tugged back to the gate rather than taxi with snow and ice on taxiways.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.