
: skip to main skip to sidebar Cliff Mass Weather Blog This blog provides my latest forecast or comments on current weather Thursday , December 24, 2009 Boring Weather Picture by Reid Wolcott of low clouds over the Puget Sound lowlands , taken from Newcastle Golf Course How many ways can a meteorologists spell Boring For the past several days we have been stuck in the classic mid-winter ridge pattern , when high pressure over the region produces dry , low wind conditions . The problem is that such conditions produce the hated , yes even despised , persistent low clouds and fog . Why With a ridge there is a lack of clouds aloft and the surface can effectively radiate heat to space without the clouds getting in the way . The atmosphere doesn't radiate as well and the result is an inversion , with temperature increasing with height . Low wind speeds with the ridge result in a lack of good atmospheric mixing in the vertical , and thus a strengthening of the . inversion Inversions act as barriers to air motion and as the air progressively cools near the surface , fog and low clouds can form . Moisture collects below the inversion , strengthening the fog . And wait It is even worse than