Here is a video from Daryl Herzmann at Iowa Enviromental Mesonet showing the KCCI Webcam from Algona just as the storm moved in. This storm produced copious amounts of hail for a number of hours from Buena Vista and Clay counties into Hancock county, including a few reports of golf ball sized hail.

[youtube=http://www.youtube.com/watch?v=7165eIZOoTA&hl=en_US&fs=1&]