Monday, December 1, 2014
Week of Warming
Subsidence accompanying the passage of an anticyclone over the upper-midwest this evening will provide clearing skies for the night. With stronger winds and clear skies, radiational cooling will be maximized leading to frigid Monday night. Tuesday will be mostly sunny bringing up the high temperature, but cloudy into the night insulating the area making a warmer low. A small amount of cold air advection will bring a slight cool-down on Wednesday, but this gives way to a low level ridge to the east on Thursday into Friday, bringing in warm air for the rest of the week. (average daily high temperature for later in the week 35F; low 20F).
The only wrinkle in an otherwise dry forecast for the week, is a descending cyclonic feature from the north that extends a pressure trough into northern Wisconsin. The thickness contours over Wisconsin at this time are oriented southwest to northeast, indicating that the band of precipitation will be forced away from southern Wisconsin. Unless this orientation changes, this forecast should remain dry into the weekend.
Rachel Down and Sam Hartwick