Heat Wave: here in SoCal we have what we call "nature's air conditioning" because a fog rolls in virtually every night, a fog that cools us down. Were it not for the nightly fog SoCal would be an unlivable desert, which is what we've had for the past couple of weeks. Usually when a heat wave "breaks" a wind comes up from the ocean and if you look to the horizon you see a fog bank moving toward you and thirty minutes later you are almost cold. This fog sweeps in and quickly ends the heat wave. I was on the beach when this one "broke" but the heat was so intense that the breeze was stopped dead by the wall of high pressure about 50 yards inland and it took nearly ten hours to creep in. Today's high was about 72 and high fog blotted out the sun. The heat wave is over in this area and one can only hope that this cooling trend will spread east.