Storms Possible Tuesday

High pressure will be in control for us today as skies remain partly cloudy and temperatures reach the low 80s.  As the high moves east across the Ohio River Valley later this afternoon and evening winds will shift a little more to the southwest helping to bring in moisture from the gulf. 

An area of low pressure will move along the U.S/Canadian border Tuesday pulling a warm front through during tomorrow afternoon.  I anticipate thunderstorms to develop across the northern Plains later this afternoon and evening and move east/southeast into the overnight across Minnesota, southwest Wisconsin and northeast Iowa.  As this cluster of storms continues to move east we may get clipped along the southern edge Tuesday morning.  Those storms will move across Lake Michigan by early afternoon.  The warm front will help to increase the instability during the day and any outflow boundary that moves south from the storms in the morning could help trigger storms late in the afternoon and evening.  Also moving through will be an upper level disturbance which could enhance the atmospheric lift. 

The storm threat will continue until early Wednesday afternoon until the main cold front passes.  This will not only end the storm chance but also end the humidity expected for Tuesday and Wednesday.  Should storms reach severe limits Tuesday, large hail and damaging winds would be the primary threats.