A vigorous Clipper System up along the Canadian border over NE Minnesota has tightened our pressure gradiant, and is responsible to our brisk southwesterly winds, and the nice warm up experienced by the Stateline on Sunday. The temperature on topped out at 44 degrees, and that was the warmest we have seen since December 31st when 53 degrees was reported at the Rockford airport. A Pacific type of cold front will pass through the Stateline tonight, and the winds will switch to the northwest making for cooler weather on Valentines Day. It will continue to be windy overnight with southwesterly winds from 15 to 30 mph gusting to 35 mph, and switching to the northwest before daybreak. It will still be windy in the morning on Valentine's Day, but the wind will diminish in the afternoon as skies become mostly sunny. The high temperature on Monday will be around 37 degrees. Monday night could be the coolest night of the week as high pressure settles into the area with clear skies, light winds, and good radiational cooling. There could also be some ground fog that develops after midnight from moisture left over from the melting snow during Sunday and Monday. On Tuesday high pressure will shift off to the east allowing southerly winds to develop again beginning another warm up the will push temperatures into the low 40's on Wednesday, and the low 50's on Thursday. The Gulf of Mexico is expected to provide enough moisture on Thursday to cause some rain showers as a weather system approaches from the southwest. On Friday an intensifying storm system over Lake Superior will push a cold front across northern Illinois bringing an end to the mild weather for the time being. The high temperature on Saturday is not expected to push above 30 degrees. A developing weather system over the southern plains needs to be watched next Sunday and Monday. It could bring snow back to the Stateline.
By Meteorologist
Eric Nefstead
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