Flight Crew Air Transport Pilot (ATP)
Inflight Event / Encounter Weather / Turbulence; Inflight Event / Encounter Wake Vortex Encounter
General None Reported / Taken
Environment - Non Weather Related; Weather; Procedure
We were cleared for takeoff right after a 757 was rotating off of 26L. The winds were 310/17G30KT and there were windshear advisories in effect. We elected to perform a full rate takeoff. After being cleared for takeoff we intentionally delayed our takeoff roll for a few seconds because of our close proximity to the preceding 757. Right after takeoff as we were bringing the landing gear up; we received a windshear warning message. We promptly executed the windshear escape procedure by checking max power; checking the spoilers were in; and following the windshear (WS)/go-around (GA) flight director commands. We experienced a slight decrease in airspeed and there was minimal roll caused by the windshear (or most likely wake turbulence). The windshear warning extinguished after several seconds and we quickly executed a right turn to intercept the RNAV course on the SID. We managed to turn the aircraft on to the SID before any lateral deviations occurred; even though the flight director stayed in WS/GA mode. Once we re-selected the appropriate flight director commands the autopilot was engaged; and we commenced the flap retraction sequence. We reported the event to ATC.No aircraft or engine limitations were exceeded; so we continued the flight without any further incident.Threat of gusty winds; and the lack of separation between a 757 and our aircraft on takeoff.
CRJ-200 Captain reported encountering wake turbulence on takeoff from ATL in trail of a B757.