The dew point was getting close as I landed and I radioed to the tower where the edge of the clouds were and that it looked like instead of the fog bank just advancing in, it would instead just white out suddenly-- which it did shortly after.
We landed at Mineral Canyon to look over the wings (now frost free) and to clean a smudge of dirt off the gopro bef...y camera running before takeoff because I would have captured on video the huge cloud...