The NOAA (National Oceanic and Atmospheric Administration) is testing out using RSS and Podcasting to serve data.
Some local offices, such as Phoenix, AZ, are even doing a Podcast kind of thing by providing a local weather recap MP3 file. You can check out Phoenix NOAA Weather Radio MP3 format broadcasts at http://www.wrh.noaa.gov/psr/broadcast/index.php. I hope that all the NOAA offices pickup on the Podcast thing and actually configure it to work like a Podcast with an RSS subscription.
You can check out, and subscribe, to all kinds of RSS data feeds at http://weather.gov/alerts/. This is really cool. You just put this in your aggregator and it will notify you of weather alerts in your county. I have been trying this for several months and it works great.
There also is an RSS feed from the National Hurricane Center in Miami, FL at http://www.nhc.noaa.gov/index-at.xml. I have been subscribed to this all year and it is really interesting to read all the alerts.