A Blue Alert on your phone means law enforcement is asking the public to watch for a specific suspect who has killed or seriously injured an officer, threatened one, or is tied to an officer who has gone missing on duty. The alert reaches you through the same Wireless Emergency Alerts system that delivers tornado warnings and AMBER Alerts, with the same loud tone and vibration.1Office of Community Oriented Policing Services. National Blue Alert Network Read the details, keep an eye out, and call 911 if you see a match. Do not approach the person.
What Set the Alert Off
A Blue Alert can be issued in three situations: an officer has been killed or seriously injured in the line of duty, an officer is missing in connection with official duties, or there is an imminent and credible threat to kill or seriously injure an officer. Authorities also have to have actionable information about the suspect before anything goes out, meaning a physical description, a name, a vehicle description, or a license plate the public can realistically act on.2Office of Community Oriented Policing Services. National Blue Alert Network Fact Sheet
That second requirement is why Blue Alerts don’t accompany every incident involving an officer. If investigators don’t yet know who the suspect is or what they’re driving, there’s nothing useful to broadcast.
What to Do Right Now
Open the alert and read it carefully. You’re looking for a vehicle make and color, a license plate, a physical description of the suspect, and the general area of the incident. If you spot someone or a vehicle matching the description, call 911 immediately. Give the dispatcher the location, direction of travel, and anything else you noticed.
Don’t approach the person. Someone who has attacked a law enforcement officer is considered armed and extremely dangerous, and civilian confrontation is the last thing investigators want. If nothing around you matches the description, there is nothing else you need to do. You don’t need to shelter in place or avoid travel unless the alert itself says so. Keep the details in the back of your mind, especially if you’ll be driving through the area described.
Why You Got One Far From Any Obvious Incident
The agency issuing a Blue Alert draws a target area on a map, and wireless carriers deliver the alert to phones inside it. Newer smartphones use GPS to check whether they’re actually in the zone and will only display the alert if they are. Older phones may show the alert even when slightly outside, because carriers broadcast from nearby cell towers to make sure coverage is complete, which can cause some overshoot.3FEMA. Geographic Accuracy of Wireless Emergency Alerts (WEAs)
Carriers are supposed to keep overshoot under a tenth of a mile beyond the target boundary, but that precision depends on your phone being able to confirm its own location. When it can’t, the carrier sends the alert to a broader area as a precaution. The target area itself can also be drawn broadly on purpose, especially when a suspect is believed to be fleeing along a highway corridor and the escape route matters more than any single town.3FEMA. Geographic Accuracy of Wireless Emergency Alerts (WEAs)
How a Blue Alert Differs From Other Alerts on Your Phone
Your phone looks and sounds the same whether a Blue Alert, a tornado warning, or an AMBER Alert comes in. The content is what tells you which is which. A Blue Alert is the only type specifically about a threat to law enforcement, and it will name an agency and describe a suspect or vehicle rather than a weather hazard or a missing child.
The FCC chose not to give Blue Alerts their own category in the Wireless Emergency Alerts system. Instead, they ride on the existing Imminent Threat or Public Safety Message channels depending on how the originating agency classifies the situation.4FEMA. Tip 38 – Imminent Threat vs. Public Safety That is why your phone treats a Blue Alert the same as a severe weather warning or a general public safety advisory.
Turning Blue Alerts Off
You can turn them off, with a catch. Federal rules let wireless subscribers opt out of Imminent Threat alerts, Public Safety Messages, and AMBER Alerts; only National (Presidential) Alerts cannot be disabled.5eCFR. 47 CFR 10.280 – Subscribers’ Right to Opt Out of WEA Notifications Because Blue Alerts travel on the Imminent Threat or Public Safety Message channels, there is no toggle labeled “Blue Alert.” You have to disable one of those broader categories, which will also silence other alerts in the same class.
On an iPhone, open Settings, tap Notifications, and scroll to the bottom to Government Alerts. Toggling off Public Safety Alerts stops most Blue Alerts. On Android, the path is usually Settings, then Notifications (or Apps & Notifications), then Advanced or Wireless Emergency Alerts, where separate toggles cover each alert category including Public Safety Messages.
Whether Your State Issues Blue Alerts at All
The national Blue Alert framework is voluntary. States decide whether to build their own plans and connect to the network, and 37 states currently have active Blue Alert plans.1Office of Community Oriented Policing Services. National Blue Alert Network If you live in a state without one, you won’t receive Blue Alerts at home, but you can still get them while traveling through a participating state when an alert is issued there.