Because whitecaps usually begin forming around 8 knots and are regular
at 10.

Doug, this is not always the case. We had 15-20 knots as conditions built and
it was quite a while before whitecaps developed.
Worse, you know this can be the case. Stop acting like a Scotty Potty for once.
You weren't there so you don't know the conditions. The pic tells only tells us
so much and only in that moment. You're some idiotic weatherman.

RB