"Flight patterns" don't "change."Â Planes land and take off into the wind. Runways are situated to be aligned with the prevailing winds. Instrument Landing Systems are aligned with the runways. Â Therefore, for the most part, planes take off and land in the same direction (or pattern, if you want to call it that). On rare occasions, the winds shift enough for the planes to land to a different runway. With regards to the noise, there are many factors that affect the noise. Air density, air temperature, humidity, wind direction, etc. all affect the noise and how far and which direction it travels.
@chilladahun:
The final approaches remain the same but they have been short-cutting across KW a lot more. Probably to get to the north runway. Planes from the north and west used to loop out over Huffman to get in line and and then approach across the lake. The guy that responded to one of my complaints said they changed the glide patterns which allowed them to come in a bit differently - tighter turn. 4951