On Feb 4, 6:39*pm, "Jay Honeck" wrote:
Our last two flights have taken place in severe cold -- zero Fahrenheit and
below.

On both flights we noticed that XM satellite weather on our Garmin 496 was
inaccurately depicting cloud cover in our area. *In fact, it was showing a
solid overcast over a large geographic area that was actually severe clear..

Has anyone seen this? *Can severely cold air spoof the satellite into
"seeing" cloud cover?
--
Jay Honeck
Iowa City, IA
Pathfinder N56993www.AlexisParkInn.com
"Your Aviation Destination"

Yup.. Happens all the time here in the "Hole". An IR satellite pic is
looking for temp differential and the cold air fakes out the camera. A
visible satellite pic usually gives a correct reading, but only during
the light of the day. YMMV

Ben.
Jackson Hole Wy