Did you receive it? I did. The presidential alert that is. It came from the Federal Emergency Management Agency.

FEMA is testing its system for wireless nationwide messages to U.S. cellphones. The "presidential alert" will say "THIS IS A TEST of the National Wireless Emergency Alert System. No action is needed." FEMA plans to reach roughly one-quarter of Americans.

FEMA wants to ensure Americans can receive important alerts for public emergencies like natural disasters, and that its technology is up to par for times of emergency.

"The purpose of the test is to ensure that EAS and WEA are both effective means of warning the public about emergencies, particularly those on the national level," FEMA said in a statement. It added, "Periodic testing of public alert and warning systems helps to assess the operational readiness of alerting infrastructure and to identify any needed technological and administrative improvements."

The wireless system, in short called the WEA, was launched in 2012 and aims to inform the public of dangerous weather, missing children, and other emergencies. 

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