Several people complained that Weather Report control which fetches data off the NOAA Web service recently stopped working. Same happened on my own Web site. First, I found that Web service URL changed from weather.gov to www.weather.gov. However, changing URL in the code didn't help since I am now getting exception 'Server committed protocol violation' when calling the Web service (see also here). NOAA admits that there is a problem which appears to be caused by hardened security in the .NET framework and that they are working on the resolution. See bottom of this page for more details. Stay tuned or subscribe to the NOAA Web service RSS feed. I will post the updated code as soon as I will make it work again.
Updated version: http://blogs.msdn.com/mikhailarkhipov/archive/2006/06/12/628540.aspx