Another Cool Weekend

A slow moving system and cool front has finally pushed through the area. The area is current under cool northerly flow that will last right through the weekend.  This cool trough of low pressure was responsible for snow on the Upper Peninsula of Michigan yesterday and early morning snow showers to the west of Chicago today. This is in stark contrast to the record high temperatures that have been baking California from San Francisco south through San Diego this week. This is all the result of a high amplitude upper level pattern moving across the United States this week.  Over the weekend the western ridge will break down and the eastern trough will slowly move east. 

The slow moving system responsible for the heavy rain and severe storms this week has finally tracked through the Ohio Valley.  A cool upper level trough will persist over the Great Lakes all weekend with low pressures generating light precipitation tracking quickly through from time to time. Temperatures all weekend will average below normal for the region.

By Tuesday high pressure will be moving east of the region allowing a southern flow to develop and a moderation of temperatures to more seasonable levels. As a system moves into the Plains, chances for severe weather will be in increasing there.  A more active pattern appears to be developing across the country  and early indications are the Ohio Valley will be wet and seasonable warm for the next week or two.