Peter R. wrote:
George Patterson wrote:


An AP article stated that the temperature at the time was 20 degrees.
I think that rules out frost, but I'm not sure.


George, as I posted earlier, I have personally experienced three different
aircraft frosting over within 10 minutes of landing when the outside air
temp was around 5-10 degrees F. Temperature alone does not rule out
frost.

Yes, I routinely have frost on my car windshields at all sorts of temps.
We had a cold snap a week ago where we got down to -15F a couple of
nights and I had a light layer of really hard to remove frost on my
vehicle that is parked outside. Unfortunately, polishing it smooth
doesn't help much for visibility through it!


Matt