SAN FRANCISCO (CBS SF) — The Federal Emergency Management Agency will be coordinating a test of a presidential alert message that will be sent to users with cellphones in the U.S. Wednesday morning, according to federal officials.

The test will send messages to all phones at 11:18 a.m. and 11:20 a.m. Pacific time that state: “PRESIDENTIAL ALERT: THIS IS A TEST of the National Wireless Emergency Alert System. No action is needed.”

For more information on the test, people can visit the FEMA website.

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