Heads-up: On Wednesday morning, you’ll see — and hear — a loud test of the United States’ emergency alert system.
It’s because the system that’s meant to warn you in the event of a major disaster is being tested by the Federal Emergency Management Agency (FEMA) and the Federal Communications Commission (FCC). And this means that a loud alert will be broadcast not just on radio and television, but also on your cellphone.
Jump straight to:
- When will this emergency alert hit my cellphone?
- What will the test look and sound like?
- Can I block this emergency alert?
Seeing the words “Emergency Alert” on your phone or the nearest TV screen can be jarring, even when the rest of the wording makes it clear that it’s only a test. And many people who lived in Hawaii in 2018 — and their families — still hold the traumatic memories of an Emergency Alert System alert sent to residents’ cellphones warning of an apparent imminent missile threat, in a false alarm accidentally triggered by one employee during a test.
Many people are familiar with emergency test alerts appearing on broadcast platforms like television and radio, but potentially less familiar with how those alerts are tested on the cellphone they’re holding. So if you know of someone in your life that might be alarmed or panicked by this emergency alert test blaring on their cellphone — for example, an elder in your family who maybe isn’t super-comfortable using their cellphone — you might consider giving them a heads-up about Wednesday morning’s test and letting them know it’s nothing to be concerned about.
The message will also be in either English or Spanish depending on the language settings of a person’s cellphone. So if you know someone who doesn’t speak either of those languages, let them know about the test too.
And if you know a person who really won’t want to have their phone suddenly screeching loudly on Wednesday morning — perhaps someone living with PTSD, a person who works nights or a family with a young baby sleeping at home — you might want to send them this story as well.
When and where will the emergency alert test take place?
It’s actually two tests, really: one happening on broadcast (radio and television) and one that will come through to your cellphone. Keep reading for the specific details of the messages you’ll see or hear.
Both tests are scheduled to begin at around 2:20 p.m. ET — 11:20 a.m. PT here in California — Wednesday, Oct. 4.
- Jump straight to: When might I receive one of these alerts for real?
For the broadcast tests, radio and television stations have a little flexibility about the exact timing of the emergency alert test. KQED Public Radio will be carrying the emergency alert test at 11 a.m. PT on Wednesday morning.
For the cellphone test, FEMA says that cell towers will “broadcast the test for approximately 30 minutes” starting around that time.
What will Wednesday’s emergency alert test look and sound like?
The first part of the test will happen on radio and television, and will be testing the government’s Emergency Alert System (EAS). FEMA says this will be the seventh EAS test that’s been conducted nationwide, so chances are good you’ve seen or heard one of these broadcast tests before, and that the emergency tone is familiar to you.
The second part of the test, which will happen around the same time, will be sent direct to your cellphone to test the government’s Wireless Emergency Alerts (WEA). FEMA says this is only the second time WEA have been tested to all cellular devices.

