Brandon Clement
EF4
Hopefully the OP will come back and let us know what model of weather radio he has that was triggered, but on the Radio Shack and Reecom units I have in service, both RMT and RWT are disabled and will not audibly alert but only will display a message.
Here's the EAS primary and secondary assignments for Mississippi http://www.msbroadcasters.org/2011/index.php?option=com_content&view=article&id=110&Itemid=162 and NOAA Weather Radio is listed as an originating source for the month of June.
I have a couple but the one in my bedroom is a Radioshack 732r. I use that one in the bedroom because it seconds as an alarm clock and the warnings and same codes are programmable. I had turned weather alarms off on this one because the only reason I use it is for late night tornadoes in my county and I'm not really worried about tornadoes in June in Ms even though we still get tornado warnings at times.
The one in the kitchen is a couple years old and I can't read the model number since it has endured quite a few chase trips. It is also from radio shack and is a silver and kind of a square shape with programmable alerts. You can't program it by SAME codes. This one went off and has never gone off for a test before then (other than display).