In this photo illustration, a phone displays an emergency alert message on October 3, 2018. Secondly, it originated from the Federal Emergency Management Agency system or FEMA.
The new Presidential alerting system is only to be used in real emergencies, according to Biel.
GettyTrump with Mike Pence and Melania Trump visiting FEMA headquarters.
"I just got my secret presidential alert message", wrote journalist Jay Bookman.
The test today is a joint WEA and EAS test.
The motion for a preliminary injunction that would have halted the emergency test was denied Wednesday morning by Judge Katherine Polk Failla.
If you haven't looked down at your phone recently.
The EAS test will be sent at 2:20 p.m.
It will be broadcast from mobile phone masts for about 30 minutes from 14:18 ET (19:18 BST) - but devices should display only a single message. Some people may get the alert a bit later depending on cell phone tower issues.
Another Twitter user posted a screen shot of a different text message he received from the president. In January, Hawaii's emergency management agency mistakenly sent out an alert warning of a ballistic missile threat to more than a million cell phones. FEMA last tested the EAS in 2016 and 2017, and the first wireless emergency alerts were sent in 2012. "No action is needed".
The objective of the testing is to "assess the readiness to distribute an emergency message nationwide and determine whether improvements are needed", according to FEMA.
A FEMA lawyer said via a phone connection to the courtroom that decisions about alerts are at the discretion of the president, just as are many other decisions involving national security. The main difference is that this is nationwide rather than regional. A similar wireless emergency alert test message has been sent to all cell phones nationwide. You're probably familiar with this system because it's been around for a long time.
Hollywood stars reacted with humor and sarcasm after receiving the first Presidential Alert. The national test will use the same special tone and vibration as with all WEA messages (i.e. Tornado Warning, AMBER Alert).
Cellphone users can opt out of getting Amber Alerts and other local or regional warnings.
The test has been scheduled to ensure that the alert system would work in the event of an actual national emergency.