Monday represents Day 3 of this regional tornado outbreak. After Saturday’s storms in the Great Plains and again on Sunday including, we expect, southwest Iowa, eastern Iowa could be in the crosshairs for a major severe weather outbreak.
As was the variable on Sunday, Monday’s first question will be answered when the remnants of Sunday’s storms barrel through. In Sunday’s case the storms quickly cleared out and the atmosphere destabilized once again. If this happen across eastern Iowa by Monday afternoon, explosive thunderstorm development can be expected.
You can see in the graphic above that the primary focus of storm chasers will be to the south. But the hatched out area (shown above in light blue) extends across all of eastern Iowa. This is the area where we could see significant severe weather, including large hail and possibly long-track tornadoes. Wind shear will be very supportive of rotating storms.
This could turn into a very dangerous situation and the tornado threat could linger across the area for some time. I strongly urge everyone in the risk area to keep up to date with the latest forecasts between now and Monday evening. We will continue to bring extensive coverage of the storms as they track across Iowa.