Anxiety is rising over the test that may last for up to 3 minutes on Wed.
The test occurs at 2 p.m. EST Wed., Nov. 9, and may last over three minutes The test will be transmitted via television and radio stations within the U.S., including Alaska, Hawaii, the territories of Puerto Rico, the U.S. Virgin Islands, and American Samoa.
It's only a test, but nerves are somewhat frayed over the first nationwide exercise of the system designed to alert Americans of national emergencies.
The test occurs at 2 p.m. EST Wed., Nov. 9, and may last over three minutes -- longer than the typical 30 seconds or one minute for most broadcast test messages.
According to a message being circulated by local school and government officials, there is "great concern in 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," according to one email being circulated by a Washington area school district.
"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."