As a developer I have to say Joe that WU for me is a nightmare. Their highly inconsistent api and unreiable outputs is something I spent hours and hours with.
Also their total ignorance of my feedback with regards to some absolute nonsense and misleading translations in Czech doesnt make them look much better.
That said... it is still the most widely used PWS networks site and one that is supported by many weather stations and software, so all you can do is try to contact them and hope someone will take notice of your bug report.