I just took another look at the Springfield WSO site. They have the obvious link to the survey for the tornado. If one looks off to the side,
there is a menu item to "view a larger map". If one opens that up and further enlarges the image, it becomes quite obvious that the
authors wanted to depict a large and significant continuous zone of F-5 forces.
This is a rare and extreme catastrophe in the center of a small to mid-side city.
Josh, if you look at the side menu for google maps, you will note that kilometers 4 through 7 all
experienced winds > 200 moh.
I know you want more exact wind speeds but it is up to the WSO to release that info.