Yesterday I flew from DWH, Houston to Georgetown,TX crossed the cold front it was really bumpy. Direct head wind of 24-35kts. Atis winds 300 @ 21 gusts 37. Landed 29 taxied and shut down with the nose into the wind. The AFS 4500's would NOT shut off. Tried 3 times before I called Advanced. Trevor tried and then discovered the wind speed still registering on the efis @ 25kts. (thinks for itself, plane still flying?) We blocked the pitot and everything shut down as normal. Oh yeah we did put the plane in a hanger.