The National Weather Service is experiencing an ongoing data flow outage impacting things like IEM NEXRAD composites, etc. No ETR at the moment and will update the news item as things progress.
Updated 8:40 PM: The outage lasted between about 3 PM and 5:15 PM CST. Depressingly, it appears all data was lost for that period. Will see what can be done though.
Final Update: Sadly, the data from this outage is generally unrecoverable. Sigh.