Federal guidance indicates that monthly warning systems tests should occur in the following manner.

“The ATTENTION or ALERT WARNING signal should be sounded for one (1) minute. This should then be followed by one (1) minute of silence, followed by the ATTACK WARNING signal sounding for one (1) minute.”

This testing procedure will establish a test pattern different from that used in an actual emergency, when the ATTENTION / ALERT WARNING or ATTACK WARNING signal will be sounded for three (3) to five (5) minutes.