[idvusers] Amazon web services THREDDS server

Hi,

I was trying to access the following thredds catalog, but get an error

http://thredds-aws.unidata.ucar.edu/thredds/catalog.xml 
<http://thredds-aws.unidata.ucar.edu/thredds/catalog.xml>

Has the url changed for radar data from amazon web services?

Thanks,
Joleen