When the program plots any of the accumulated precipitation products (1 hour, 3 hour or storm total), the data is not scaled to the basemap. It looks like it plots the 124 nautical mile data inside a 62 nautical mile ring. Changing the website that the products come from has no effect.
Thanks for letting me know about this and for posting the sample (the data block helps greatly). The raster products such as this one have been extremely problematic because of poor standards documentation (no coordinate system description, etc). It looks like Digital Atmosphere is having trouble scaling this particular product. I'll make a note to take a look.