A map of active SUA areas is available at the FAA’s SUA Web site http://http:// http://sua.faa.gov or http://http:// http://sua.faa.gov/atcaamap.jsp
The map shows what MOAs are active, which will become active soon, and is refreshed every 6 minutes.
By the way what is the huge SUA in Kansas all about? President going there today?
(Thanks to AOPA for publicizing this)
Gaynor