Wind blows azimuth arm with brakes on.
The wind was directly out of the south and the maximum velocity measured on jon hagen's wind monitor was 40 mph. The operators began moving the dome downhill at azimuth 258 degrees. The dome was at 18 degrees by the time the azimuth stopped moving. The azimuth rail had been greased the previous week. You can see that the azimuth started slowing down at azimuth of 240 degrees.