Before we get to what could become a very long day across Iowa on Friday, we need to talk about tonight’s threat. Severe storms are expected to develop north and west of Iowa later this afternoon and evening. You can see in the graphic to the left the area under a slight risk for severe weather includes a portion of Iowa. It’s expected that once storms get going, they will eventually push into the northwest part of Iowa overnight with the capability of producing strong winds, large hail and possibly an isolated tornado or two.
There is also a heavy rain threat tonight, but at this time it does not appear to affect the same areas hit hard by Tuesday Night’s rain. This is welcome news, but with the threat of overnight storms still bears some watching.
Now to the main course. With a cold front finally making its way through the state, we can expect a rather prime setup for severe weather across the state. As you can see in the graphic to the right, Iowa is not alone. The Storm Prediction Center has posted a large slight risk area cover much of the central United States.
Of greatest concern is the threat of tornadoes developing in the early stages of the severe weather event. This is a possibility is storms can get going ahead of the frontal boundary.
We’ll break down the exact risks for tornadoes, hail and strong winds tomorrow morning. For now, the SPC has this probabilities graphic for any type of severe weather. Although general, a good bulls eye is painted right over the state with an elevated 30% risk of severe weather at any given point in this area.
This is something we’ll have to keep very close watch of. Again, once storms develop Friday Afternoon, all modes of severe weather are possible. Although heavy rain will once again be a concern, the hope is any flash flooding will be isolated thanks to the cold front. Unlike other overnight events, once the frontal system pushes through the state the rain should quickly end.
After all is said and done, cooler and less humid air will finally return to Iowa. Giving us a much needed break from all this rain. But before then, we’ll focus on the threats for severe weather. We’ll monitor tonight’s storms and in the event they threaten parts of western Iowa we’ll launch our live coverage. Same goes for Friday as it appears likely severe weather will affect a good portion of the state to wrap up the work week.