9:12, Wednesday. 2 May 2012.

It's a whopping 73 degrees out right now!  The sky is overcast by Cumulonimbus clouds (that means it's raining).  Air pressure is kind of mid-high.

I can see there are low cells in Wyoming and Kansas.  The Kansas cell should draw lots of moisture up into the Plains, once the Wyoming cell moves over Wisconsin it could feed off of that moisture siphoning it further north.

You will notice that the winds over Texas meet and form a northward line along the yellow dashed line.  I'm not sure what this is possibly a dry line.  Also there is a very close high cell over Arizona to that low cell, this is going to intensify the storms because the steep gradient will produce high winds and the high altitude air will descend from the mountains warming a bringing water vapor into the system.