Why would I disable the emergency alerts in my phone, well they tend to sound as if the world is about to end no matter the time of day. Also depending on the season you might received multiple alerts during the day.
Find and select the Messages icon. Once in the Messages application tap on Menu which is located in the upper right corner. From the drop down menu select Settings. Select Emergency alerts. Uncheck all available options. You can’t uncheck Presidential alert. This is how your screen should look. Now you can rest assured an emergency alert won’t wake you up in the middle of the night(multiple times).