A strong area of low pressure will rapidly deepen as it passes into the Midwest this weekend. Heavy rain, large hail and damaging winds are all threats! The main show for severe weather goes down on Sunday in the Ohio Valley. The heaviest rain appears to fall in the Great Lake states (Click on map center tab for rainfall map) as the storm system strengthens. Some snow may wrap around on the back side as the colder air crashes in, but the main story will be the November severe weather event.