Morgans wrote:
A close temperature/dewpoint spread (less than 5 degree Celsius difference
between the two) can indicate the presence or possibility of fog.

A close spread like stated above could also mean that carb ice will form
more easily.


The same 2-3 degree difference between dewpoint and temperature may make the
difference in deciding to go or not. If it occurs as the sun is rising, going
is probably safe as the temperature is going to rise, widening the spread.
Conversely, if the sun is going down, it's a pretty good chance fog is going to
get you if you decide to fly.



--
Mortimer Schnerd, RN

VE