Hello, Just about every evening about this time in Arizona I get this line up of aircraft. I am located @ 7200 ft. in the white mountains of N.E. Arizona about 190 miles N.E. of Phoenix. I am assuming this is just the normal flight pattern in my area of sky here ?
They get arranged like that by the air traffic controllers in Phoenix. If you click on the planes you will see that they are spaced on vertical.
The line is even longer over the Atlantic, after the last contact with Gander ATC.