(KERO) — The Federal Emergency Management Agency will be testing its national emergency alert systems at 11:20 a.m. Wednesday.

The agency says it's part of regular testing and the test has been planned for more than a year.

The emergency alert test will be sent to televisions and radios.

It will last about one full minute.

A wireless alert will be sent to those who’ve opted-in on their phones to receive test messages. Instructions to opt-in. can be found here.