"Marty from Sunny Florida" writes:

[...]
The sky was clear, and when I got my pre-flight briefing, the temp was 26
and dew point 16. It was unseasonably cool and very dry for Florida. [...]

If these are in degrees Celsius, then there is ample moisture in the air.

My next move was carb heat, even though there was absolutely no
visible moisture. [...]

You misunderstand the nature of carb icing. Visible moisture (rain?
cloud? thick mist?) is not a prerequisite.


- FChE