EMB ERJ 170/175 ER/LR
Flight Crew Air Transport Pilot (ATP)
Situational Awareness
Inflight Event / Encounter Weather / Turbulence
Air Traffic Control Issued New Clearance; Flight Crew Executed Go Around / Missed Approach
Human Factors; Weather
On approach to 16L we had received numerous reports of strong gusting wind at SEA from ATC; ATIS; and dispatch. Approach also informed us of windshear advisories of gains and losses of 20 knots on final. This matched the gust factor of the reported wind. As we set up for the ILS approach we also reviewed the windshear escape procedure in the event it was needed.As we descended on the glideslope we experienced moderate turbulence. The First Officer was flying with the autopilot on; and his hands on the yoke and thrust levers to keep the speed as close to assigned and approach speeds as possible and prevent stall warning or flap overspeed. He was ready to disconnect the autopilot at any time if needed. While he guarded the controls I adjusted the altitude and speed bugs as instructed so he did not need to remove his hands from the controls.On short final we received a windshear warning message. I called out 'Windshear; max thrust.' The First Officer hesitated momentarily but started initiating the escape maneuver before I had finished calling out max thrust. We followed the escape maneuver and exited the windshear without further difficulty. No altitude was lost. I informed ATC of our go around and our windshear encounter. We were vectored around and were able to land successfully without any further windshear messages. In the post flight debrief the First Officer said that the windshear warning caught him by surprise.Ensure that when briefing escape maneuvers and flying into potential windshear or other abnormal conditions that you are mentally prepared to react; not just briefing the procedure to cover your bases; but to truly prepare for the condition if encountered.
EMB-175 Captain reported executing a missed approach after encountering windshear on short final at SEA.