UAE Emergency Alerts: Essential Safety Guidelines and How the Cell Broadcast System Operates

Residents in some parts of the UAE received an emergency alert on Tuesday evening after authorities detected an aerial threat from Iran. Phones began sounding at about 6.52pm, with the Cell Broadcast message instructing residents to immediately seek a safe place in the closest secure building and steer away from windows, doors, and open areas. The previous alert received by residents was issued on July 12.

Experiencing a sudden emergency alert on your phone can be unsettling, particularly when it warns of a missile threat. Understanding what to do when the alarm sounds, knowing when it is safe to leave your shelter, and learning how the system works are vital for public safety.

What should residents do when the alarm sounds?

Since the beginning of the war between the US and Iran, residents across the UAE have received broadcast messages warning of potential aerial threats. Authorities have released specific guides to ensure public safety during these emergencies, emphasizing the importance of understanding and acting immediately upon the instructions provided.

If you receive an alert while outdoors, you must move into the nearest building, avoid open spaces, and refrain from standing next to external walls or glass panels.

For those receiving the alert while driving, the guidance is to continue driving with caution without stopping on the road or filming any incident. Drivers should head to the nearest indoor location to take shelter, avoiding unnecessary travel, blocked roads, or blocked emergency access routes.

Individuals at home or in closed areas should step away from balconies and windows, move to the central area of the building, and stay clear of glass partitions or surfaces that could shatter under the impact of falling debris. Residents should listen to building security or announcements, avoid using lifts unless specifically instructed, and maintain these measures until a follow-up safety message is sent out by the Ministry of Information, at which point normal activities may resume.

What to avoid doing during an emergency

Authorities have repeatedly asked residents not to spread unverified news or share unfounded social media posts, urging the public to rely exclusively on official sources. Filming or photographing sensitive locations, emergency operations, missile interceptions, or falling debris—and posting them online—is a punishable offence in the UAE, as such media can reveal operational details and security presence to adversaries.

Not all residents get missile alerts

The UAE's early warning system (EWS) is geolocation-based, meaning residents may or may not receive siren alerts depending on their exact location during an incident. The National Emergency Crisis and Disasters Management Authority (Ncema) describes the warning system as a vital preventive tool that promptly alerts the public and strengthens national preparedness.

According to Ncema, alerts are dispatched only to concerned areas based on the hazard's location, nature, and impact extent. Receipt may also vary depending on a device's location and emergency alert settings. Hearing reverberations from nearby affected locations without receiving a direct alert does not indicate a system fault, but rather reflects the precision of the warning mechanism.

UAE changes to quieter alerts

In March, the UAE adjusted its public warning notification system by introducing notification modes with varying tones instead of a uniform, loud siren. From 9am to 10.30pm, the alert uses a high tone ending with a standard text message tone, whereas from 10.30pm to 9am, it employs a standard text-message tone for both the alert and its conclusion. Ncema implemented this change to ensure alerts are clearer and more appropriate for different times of the day.

How does the alert system work?

In 2019, the UAE's telecoms authority enabled the National Public Warning Service (UAE Alert), utilizing cell broadcast technology to disseminate official warnings during crises. Unlike individual text messages, Cell Broadcast flashes messages directly to mobile phones in a specific location and timeframe, ranging from a single cell to an entire network.

To function properly, mobile devices must support displaying emergency alerts in both Arabic and English. These alerts appear on the device automatically without requiring user interaction, cannot be replied to, forwarded, or copied, and remain displayed until canceled by the user, though they can be reviewed later.