Can you hear me now? National cell phone alert test set for Wednesday The test is expected to begin at 11:18 a.m. PDT

The message will have a header that reads "Presidential Alert" and text that says "THIS IS A TEST of the National Wireless Emergency Alert System. No action is needed." The message will have a header that reads "Presidential Alert" and text that says "THIS IS A TEST of the National Wireless Emergency Alert System. No action is needed." Photo: Courtesy FEMA Photo: Courtesy FEMA Image 1 of / 1 Caption Close Can you hear me now? National cell phone alert test set for Wednesday 1 / 1 Back to Gallery

Testing, testing, 1, 2, 3.

The Federal Emergency Management Agency (FEMA) and the Federal Communications Commission (FCC) want to know if you can hear them now? Good.

That's why at 11:18 p.m. (Pacific time) on Wednesday, almost every cell phone in the country will receive an alert.

According to the Federal Emergency Management Agency (FEMA), the test will help them assess whether or not communications infrastructure is ready to distribute a national message in an emergency, such as a weather event or if a child is missing.

If you have received an AMBER Alert message on your phone before, that is the tone you should expect to hear Wednesday. The message will have a header that reads "Presidential Alert" and text that says "THIS IS A TEST of the National Wireless Emergency Alert System. No action is needed."

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The test message will be sent to all cell phones connected to wireless providers connected to the Wireless Emergency Alerts system.

Cell towers will broadcast the signal for approximately 30 minutes, meaning compatible cellphones should receive the message anytime within that window. Cell phones should only receive the message once.

The test was originally planned for Sept. 20, but was postponed due to Hurricane Florence.