Uncertainty is the name of the game this time of summer!From the SPC 1300Z outlook:...Synopsis... Another highly uncertain and complex forecast with mesoscale convective dependencies apparent this forecast update. Water-vapor imagery implies a belt of west-northwest mid to high-level flow extending across the northern High Plains east through much of... Read More

Momentum from northwest flow overlaid rich moisture in the upper Midwest and western Ohio valley spawned multiple clusters of intense storms, including supercells. Several tornadoes touched down in Wisconsin and Chicagoland, including the EF3 Menasha, Wisconsin tornado. Storms later congealed into bowing segments in Indiana and Kentucky.ProbSevere v4, the image-based... Read More