Synopsis for Lake Superior .SYNOPSIS...A 30.5 inch high centered over northern Manitoba will extend a 30.1 inch ridge into the Upper Great Lakes today. Early this week, a 29.4 inch low will weaken as it moves across the mid Mississippi Valley, with the aforementioned high traversing slowly east through Ontario. Lake Superior will be sandwiched between these two systems today and Tuesday, and the high will extend a 30.4 inch ridge southward over our area on Wednesday through Friday morning before finally pushing eastward. Synopsis for Lake Michigan .SYNOPSIS...Low pressure of 29.4 inches will move from the central Plains this morning to the Tennessee Valley this evening and onward to the Mid Atlantic by Tuesday. Meanwhile, high pressure of 30.4 inches will remain anchored across Ontario. Eventually ridging averaging 30.3 inches from this high pressure will build into the western Great Lakes during Wednesday and persist through Friday. Synopsis for Lake Huron .SYNOPSIS...High pressure averaging 30.00 inches will expand from northern Ontario over the central Great Lakes today. This system will maintain dry weather through the week but contribute to moderate northeast wind as low pressure, 29.50 inches, moves slowly through the Ohio valley today through Wednesday. Winds will start to relax during late week as the Ohio Valley low exits eastward and a stronger high pressure system averaging 30.40 inches settles across the region. Synopsis for Lake Erie .SYNOPSIS... Low pressure 29.50 inches across the southern Plains this morning will move east across the Tennessee Valley and continue off of the Mid Atlantic Coast Tuesday. Low pressure 29.70 inches will develop across the upper Ohio valley Tuesday, moving east and phasing with the coastal low Tuesday night. Meanwhile high pressure 30.40 inches will hold across Ontario Wednesday into Thursday, remaining in control over the Great Lakes through the end of the week. Synopsis for Lake Ontario .SYNOPSIS... A 30.4 inch high will build into northwest Ontario today, with a ridge extending down into the Great Lakes through the end of the week.