I fear that WU is discontinuing their classic radar display. I suggest you convert to the NWS script in the Base USA template and abandon the WU-radar-inc.php script. They've already pruned back the auxiliary maps available, and the configuration directions no longer work (due to WU website design changes) to get the URLs needed for the region/city map displays. I'm going to deprecate the WU-radar-inc script from the template set .. it's a losing battle with WU as they switch everything to 'wundermap'.