WASHINGTON (Michigan News Source) – There’s no hitting the snooze on this alarm. The Federal Emergency Management Agency (FEMA) and the Federal Communications System (FCC) will test the emergency alert system on Wednesday at 2:20 p.m., ET.

That means cell phones nationwide will vibrate and blast sound with alerts that read, “This is a test” and “no action needed.” The test will last about 30 minutes, but alarms on individual phones should only sound for roughly one minute. The alert will also play on televisions and radios.

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“These test alerts are necessary to verify that the system is working properly so that, in a real case, citizens will know what to do,” Puerto Rico Emergency Management Agency Commissioner Nino Correa Filomeno said in a press release.

The FCC said the Emergency Alert System (EAS) sends out notifications for severe weather and amber alerts.