An email from Don Hershman had the following image. The image is from the FHB Risk Assessment Tool at Penn State. http://www.wheatscab.psu.edu/riskTool_2009.html
Much of the wheat-growing area is in red or yellow, meaning that we have high to medium risk for FHB, according to the model.
See Don's post from May 6, 2009 for more details about head scab and management options.