There is a marginal risk of severe storms this evening across northwest Iowa. This threat extends along a line from Omaha to Waterloo, and points to the northwest. There is a fairly reasonable cap, or a lid on the atmosphere, which will prevent storms from developing until late Sunday evening. That being said, a few storms will develop across northwest Iowa as the temperatures begin to cool, allowing the cap to erode.
Any storms that do develop could become strong to severe, with large hail and damaging winds as the only threats. Heavy rain also appears possible with these storms. As for timing, storms will develop across northwest Iowa after 10pm, and will continue into Monday morning. There will be additional chances of widespread storms Tuesday evening into Wednesday as a cold front tracks through the state. A few of these storms will also pose a severe threat.
Continue to follow the Iowa Storm Chasing Network for the latest severe weather updates.