A heavy marine layer had begun to settle in, obscuring the view.
The air in the marine layer becomes very moist and fog occurs.
Later, perhaps, the marine layer would burn off and they'd have some sun, but for now, the sky was a wall of dead cloud.
The surface cooling results in a large temperature inversion at the top of the marine layer.
A marine layer can also be driven away by sufficiently strong winds.
The sun had finally burned through a lingering marine layer, and the heat in the vehicle was making me sleepy.
Minor marine layers exist in this thick rock unit (up to 10,000 feet).
The mountains also shield the area from cool marine layers.
The marine layer clears back toward the coast, usually by noon.
A stable marine layer may then develop over the ocean as a result.
