Problem with NEXRAD Composites

Hello,
We feed off of the NSF machine to get the 1-km NEXRAD composites. Data stopped coming about around 1520Z. I'm wondering whether the problem is a processing, network, or LDM problem at NSF. 

Jim
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James P. Koermer                E-Mail: koermer@xxxxxxxxxxxxxxxxx
Professor of Meteorology        Office Phone: (603)535-2574
Meteorology Program             Office Fax: (603)535-2723
MSC #48                         WWW: http://vortex.plymouth.edu/
Plymouth State University
Plymouth, NH 03264