Ron Wanttaja wrote in
:

We've had a similar thing happen at my home field. The medevac
helicopters occasionally land near the office where the anemometer for
the SuperUnicom is mounted. The rotor wash will blow the thing
around, and the winds will taken a 20 knot jump for a short time.
Actually had to reassure a guy inbound that the winds over the runway
WEREN'T as strong as the robot was reporting....

Ron Wanttaja


At the airport I am based at in Western Alaska, we get DC-6's landing and
taking off. It's a gravel runway that can be quite dusty when it hasn't
rained for a couple days. If you listen to the ASOS when a 6 takes off, it
will go from reporting 10+ miles of vis down to 1/4 mile and then slowly
come back up to 10+ just from the dust kicked up.