A friend sent this to me today. It's the first I've heard of it. 

Thought I'd pass on the info so you don't get scared when they do their test. 

I would be alarmed if I didn't know about it for sure.

FYI

This is true..not a hoax.do not be alarmed at 2 PM EST on November 9th -
this is only a test


Nationwide Emergency Alert System Test - Nov. 9


On November 9, the Federal Emergency Management Agency (FEMA),
Department of Homeland Security (DHS) and the Federal Communication
Commission (FCC) will conduct the first national test of the Nationwide
Emergency Alert System.
This test will kick off at 1:00 p.m. (CST). The test will be nationwide,
running concurrently across all time zones. 
 

This system test is the first of its kind. It is designed to broadcast a
nationwide message to the American public. Nothing like it has been
conducted in the history of the country. There have been tests in the
past, but none to all parts of the nation at the same time. The test
will run concurrently on all radio and TV band and the message will run
for three minutes. Most messages in the past were anywhere from 30
seconds to 1 minute.

 
There is great concern among local police and emergency management
circles about undue public anxiety over this test. The test message on
TV might not indicate that it is just a test. Fear is that the lack of
an explanation message might create panic.  Please share this
information with your family and friends so they are aware of the test.