www.tetonwyo.org...
Keep in mind that if you have satellite radio (such as XM Radio or Sirius Radio) or if you have satellite television (such as Direct TV or Dish Network) you will not receive local EAS messages. The only media that broadcast local EAS messages are local outlets, and only in the case of a national EAS activation would satellite radio or television broadcast EAS statements.
I believe the testing of the national system is done rarely, maybe a few times each year at most. When this happens, I suspect it would be broadcast across your Dish. This is probably what you've experienced.

