This evening a massive bow echo has tore through portions of Iowa, Illinois and is now moving across portions of Michigan and Indiana.  90 mph winds were just reported near La Porte, IN with this convective system and numerous reports of wind damage are coming in.  Trees and power lines have been reported down across the Chicagoland area along with some reports of structural damage.  No real reports of injuries have occurred as of now, but there is a moderate risk in place from the Storm Prediction Center and an associated risk of more supercells with damaging winds, large hail and tornadoes further west.  Speaking of that…

Tornado warnings are now being issued south of the Des Moines metro area this afternoon for rotating thunderstorms that have and are continuing to develop along an outflow boundary in Central and Southern Iowa.  These storms will have the potential to spawn tornadoes throughout the evening hours and into the overnight given the very unstable boundary layer in place.  Some of these tornadoes could be strong, but they shouldn’t be quite as strong as yesterday.  As we all know, however, any tornado poses a threat to life and property.  Stay tuned to later updates….