Public Warning
Cell Broadcast Service

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Public warning messages

What is Public Warning Cell Broadcast Message?

The Public Warning Cell Broadcast Message refers to the use of the cell broadcast service function of the telecom operator 4G system, which provides the government agencies to simultaneously transmit the message to the 4G user mobile phone in a specific area in a short time, so that the public can grasp the disaster information as soon as possible.

What are the types of the Public Warning Cell Broadcast Message?

There are Presidential Alert, Emergency Alert, Alert Message, Monthly Test Message

Presidential Alert - Applicable to wide-ranged disasters and the ones that the public may be immediately harmed. The message is preset and cannot be turned off.

Emergency Alert - Applicable to disasters where people may be harmed. It can be turned on or turned off via the mobile phone interfcae as desired by the user.

Alert Message - Applicable to alerts that can be prepared for a long time and are closely related to people's life. It can be turned on or turned off via the mobile phone interfcae as desired by the user.

Monthly Test Message - Cell broadcast system test message. The preset is turned off, and it can be turned on via the mobile phone interfcae as desired by the user.

What are the Existing Public Warning Messages?
Issuing Unit
Warning name
Sending Principle
Message Content (Example)
Channel
Central Weather Bureau, Ministry of Transportation and Communications Instant Torrential Rain Alert The Instant Torrential Rain Alert release method is a thunderstorm event accompanied by lightning convection, and the latest instant message is provided according to the convective life cycle. [Instant Torrential Rain Alert] In the mountains of Tainan, Kaohsiung and Pingtung, please guard against severe weather such as heavy rainfall, gusts, lightning strikes or hail, until 12/03 16:45. Central Weather Bureau Alert Message
Central Weather Bureau, Ministry of Transportation and Communications Instant Earthquake Alert When detecting an earthquake scale of 5.0 or more, the alert is sent to the people living in the cities/ counties where the scale of earthquake reaches level 4 (Taipei City level 3) or more. [Instant Earthquake Alert] 05/24 21:10 there was an earthquake in Chiayi and Tainan area with an estimated earthquake scale of 4 or above: Chiayi, Yunlin. Central Weather Bureau Presidential Alert
Central Weather Bureau, Ministry of Transportation and Communications Tsunami Warning When the Central Weather Bureau releases or lifts a tsunami warning in Taiwan, it targets the residents in the villages, towns, cities of Taiwan, Penghu, Kinmen and Matsu.
Release a warning:
[Tsunami Warning]03/11 13:46 An 8.9-magnitude earthquake struck the northeastern part of Honshu, Japan, causing the tsunami to reach the eastern coastal area of Taiwan at about 03/11 17:40. For more details, please visit the website of the Central Weather Bureau. Central Weather Bureau

Lifting a warning:
[Tsunami warning lifted] 03/11 13:46 An 8.9-magnitude earthquake struck the northeastern coast of Honshu, Japan, causing the tsunami. However, through the study, the threat to the coastal areas of Taiwan has already been lifted. For more details, please visit the website of the Central Weather Bureau. Central Weather Bureau
Alert Message
Central Weather Bureau, Ministry of Transportation and Communications Typhoon Strong Wind During the typhoon’s invasion of Taiwan, it provides immediate warnings for land areas that are about to be affected by severe typhoons and strong winds. It is released when it is predicted that an area will be affected by typhoon winds above 12 level (inclusive) or gusts up to 14 level (inclusive). [Typhoon Strong Wind] There will be a 12-level average wind or an above 14-level gust in your area. Please stop outdoor activities and hide immediately. Central Weather Bureau Alert Message
Directorate General of Highways, Ministry of Transportation and Communications Road Closure Alert Due to road collapse and other factors, the road was closed. Alert is sent to road users within 10 km. [Road Closure Alert] 149K+700~149K+720 of Provincial Highway 9 in Nan-Ao Township, Yilan County is currently closed due to the disaster. It is expected to open: 11/01 09:00. Directorate General of Highways Alert Message
Water Resources Agency, Ministry of Economic Affairs Alert of Reservoir Flood Discharge 1.When the second level or above of “Disaster Emergency Operation Task Force of the Ministry of Economic Affairs” are opened.

2. The flood discharge alert is issued by the management units of each reservoir, and they release the alerts according to the timing set by the operating points of each reservoir.
[Alert of Reservoir Flood Discharge]○○ River ○○ Reservoir will discharge water from○○○○. For the residents near the downstream, please pay attention and stay away from the river bed for safety. (○ Region Water Resources Office, Water Resources Agency, Ministry of Economic Affairs) Alert Message
Soil and Water Conservation Bureau, Council of Agriculture, Executive Yuan Debris-flow Alert 1. Yellow warning: When the predicted rainfall is greater than the baseline value of the debris-flow warning, the yellow warning of the debris-flow is released.

2. Red warning: When the actual rainfall has reached the baseline value of the debris-flow warning, the red warning of the debris-flow is released.
[Debris-flow Alert] Subei Village, Su-Ao Town, Yilan County has issued a yellow warning for debris-flow. Please be alert. Soil and Water Conservation Bureau, Council of Agriculture Alert Message
Centers for Disease Control Epidemic Notification Domestic important epidemic situation. [Epidemic Notification] The dengue fever epidemic in Kaohsiung is still at its peak. The climate in southern Taiwan is warm with intermittent rainfall. The public is encouraged to remove the source of the sputum and continue until 12/31 00:00. Centers for Disease Control Alert Message
Centers for Disease Control International Tourism Epidemic Notification International disease outbreaks have developed more severely, or have affected that area. Special reminders are sent to nationals visiting that place. [International Tourism Epidemic Notification] In Guangdong Province of China, the first case of H7N9 influenza in autumn occurred. Nationals must pay attention to personal hygiene in epidemic areas until 12/31 00:00. Centers for Disease Control Alert Message
Civil Defense Headquarters, National Police Agency, Ministry of the Interior Air Raid Alert After receiving the military’s warning order, the Civil Defense Headquarters will provide emergency evacuation by launching alarm sounds and sending warning messages.

The alert types are divided into:
1. Air Raid Alert
2. Wan-An Exercise Air Raid Alert
Type 1 message content:
[Air Raid Alert] The air raid warning in Taiwan and Penghu area was issued at 13:30, and people and cars should all be guided by the military police to take refuge on the spot. National Police Agency
Presidential Alert
Civil Defense Headquarters, National Police Agency, Ministry of the Interior Air Raid Alert After receiving the military’s warning order, the Civil Defense Headquarters will provide emergency evacuation by launching alarm sounds and sending warning messages.

The alert types are divided into:
1. Air Raid Alert
2. Wan-An Exercise Air Raid Alert
Type 2 message content:
[Wan-An Exercise Air Raid Alert] Wan-An exercise in central area. Implemented from 13:30 to 14:00. Pedestrians and vehicles control. National Police Agency
Alert Message
Ministry of National Defense Air Raid Alert
3. Missile Air Raid Alert
(1) Missile landing
(2) Missile falling into the sea
(3) Disintegration in the air (falling into the sea)
(4) Disintegration in the air (landing)
(5) Alert lifted
[Missile Air Raid Alert] ○ country launched a missiles at ○○:○○ and they will land in the ○○ area of Taiwan’s main island. Please take refuge in stable buildings or basements. Ministry of National Defense 02-23116117 Presidential Alert
Ministry of National Defense Air Raid Alert
3. Missile Air Raid Alert
(1) Missile landing
(2) Missile falling into the sea
(3) Disintegration in the air (falling into the sea)
(4) Disintegration in the air (landing)
(5) Alert lifted
[Missile Air Raid Alert] ○ country launched missiles at ○○:○○, and they will land in the ○○ area of Taiwan's main island. Please take refuge in stable buildings or basements; the mass transit will stop operating immediately. Ministry of National Defense 02-23116117 Presidential Alert
Ministry of National Defense Air Raid Alert
3. Missile Air Raid Alert
(1) Missile landing
(2) Missile falling into the sea
(3) Disintegration in the air (falling into the sea)
(4) Disintegration in the air (landing)
(5) Alert lifted
[Missile Air Raid Alert] ○ country launched missiles at ○○:○○, and they will land in the sea in the ○○. For the operating boats, please pay attention to the navigation safety. Ministry of National Defense 02-23116117 Emergency Alert
Ministry of National Defense Air Raid Alert
3. Missile Air Raid Alert
(1) Missile landing
(2) Missile falling into the sea
(3) Disintegration in the air (falling into the sea)
(4) Disintegration in the air (landing)
(5) Alert lifted
[Missile Air Raid Alert]○ country launched a missile at ○○:○○. The missile disintegrated after the lift and the wreck may fall in the sea area of ○○. For the operating boats, please pay attention to the navigation safety. Ministry of National Defense 02-23116117 Emergency Alert
Ministry of National Defense Air Raid Alert
3. Missile Air Raid Alert
(1) Missile landing
(2) Missile falling into the sea
(3) Disintegration in the air (falling into the sea)
(4) Disintegration in the air (landing)
(5) Alert lifted
[Missile Air Raid Alert] ○ country launched a missile at ○○:○○. The missile disintegrated after the lift and the wreck may fall in ○○ area. Please pay attention and if you find an unknown object, please report to the police. Ministry of National Defense 02-23116117 Presidential Alert
Ministry of National Defense Air Raid Alert
3. Missile Air Raid Alert
(1) Missile landing
(2) Missile falling into the sea
(3) Disintegration in the air (falling into the sea)
(4) Disintegration in the air (landing)
(5) Alert lifted
[Missile Air Raid Alert Lifted] ○ country launched a missile at ○○:○○. The missile had landed at ○○:○○ (flying over the airspace and falling into the sea area of ○○). If you find an unknown object, please report to the police and pay attention to the follow-up public information. Ministry of National Defense 02-23116117 Alert Message
Atomic Energy Council, Executive Yuan Nuclear Accident When the Central Emergency Management Center gives an order, it is sent by the Atomic Energy Council, Executive Yuan. [Nuclear Accident]This is a nuclear accident alarm. There is no radioactive release at the moment. Please follow the instructions of the police or the government’s instructions on TV or radio to action and keep an eye on the follow-up message. Atomic Energy Council Alert Message
Directorate-General of Personnel Administration, Executive Yuan Class and Work Suspension Notification The class and work suspension notification sent by the county and city governments. [Class and Work Suspension Notification]Taitung County: Tomorrow it has reached the standard of class and work suspension. The Directorate-General of Personnel Administration Alert Message
22 Special Municipality, County (City) Government Evacuation When the Emergency Management Center of each special municipality or county (city) government is established. Various types of disaster evacuation. Emergency Alert
Taiwan Power Company, Ministry of Economic Affairs Power Outage Notification Before the implementation of emergency zone rotation power outage caused by system accidents. Type 1 message content:
[Power Outage Notification] XX/XX XX:XXXX The power plant was shut down due to accidents. The current power supply capacity of the system is insufficient. It is expected that at XX:XX on XX/XX we will start the emergency zone rotation power outage. Taipower Company 1911 or visit the official website to inquire.
Type 2 message content:
[Power Saving Notice]XX/XX XX:XXXX The power plant was shut down due to accidents. The current system power supply capacity is insufficient. Please save electricity. Taipower Company 1911 or visit the official website to inquire.
Alert Message
China Petroleum Corporation, Ministry of Economic Affairs Explosion Explosions happened in the pipeline facilities under the jurisdiction of the Taoyuan (Dalin) Refinery and the Taichung (Yong-An) Natural Gas Plant. After the plant director or authorized personnel determined that the circumstances were serious, an emergency alert was issued for the residents around the plant. [Explosion]10/31 15:45 A major explosion occurred at the ○○ plant of CNPC. The resident in ○○ please pay attention and do not approach the factory area. CNPC ○○ site, call ○○○○ # ○○. Emergency Alert
China Petroleum Corporation, Ministry of Economic Affairs Industrial Fire Explosions happened in the pipeline facilities under the jurisdiction of the Taoyuan (Dalin) Refinery and the Taichung (Yong-An) Natural Gas Plant. After the plant director or authorized personnel determined that the circumstances were serious, an emergency alert was issued for the residents around the plant. Type 1 message content:
[Industrial Fire] 10/31 15:45 A major fire occurred at the ○○ plant of CNPC. The resident in ○○ please pay attention and do not approach the factory area. CNPC ○○ site, call ○○○○ # ○○.
Type 2 message content:
[Industrial Fire] A fire broke out at the ○○ plant of CNPC. In order to prevent smoke and dust from affecting people’s respiratory health, the residence in ○○ please suspend outdoor activities, and do not approach the factory area. CNPC ○○ site, call ○○○○ # ○○.
Emergency Alert
Taiwan Water Corporation, Ministry of Economic Affairs Emergency Water Outage When the water purification site or the water intake is invaded and poisoned, which may endanger people’s lives, the alert will be issued. [Emergency Water Outage] The 00 water purification site was poisoned at 00:00 on 00/00.The water supply company’s management office in Zone 0 immediately stopped the water supply operation. For more details, please visit the official website of the Management Office of Zone 0. 00-00000000 Alert Message
Environmental Protection Administration, Executive Yuan Air Quality Alert The air quality indicator AQI > 200 within 20 km radius of the station. [Air Quality Alert] 2018/05/28 14:00 Bad air quality in your area. It is recommended to stay indoors, reduce outdoor activities, and wear a mask if you are out. Environmental Protection Administration, Executive Yuan (02)23712121 Alert Message
Central Disaster Response Center (Ministry of the Interior) Major disaster alert After the establishment of the Central Disaster Relief Center, a major disaster threatening people’s lives and safety will occur, and emergency response will be taken as a time. [Emergency Alert]Due to ○○○ (disaster) at (where) on (when), please take refuge and stay informed.CEOC 02-81966999 Emergency Alert
Council of Agriculture, Executive Yuan Animal and Plant Epidemic When major international animal and plant epidemics are severe, when the risk of animal and plant infectious diseases is extremely high, or when there is an outbreak of animal infectious diseases across the country, it is necessary to immediately inform the national public to prevent the invasion of the disease. [Animal and Plant Epidemic] To prevent African swine fever, please do not deliver meat to Taiwan through online shopping. Offenders can be sentenced to 7 years in prison. If you return from abroad, please do not bring meat products into the country. Offenders can be fined 1 million dollars. Bureau of Animal and Plant Health Inspection and Quarantine, Council of Agriculture reminds you. 02-23431401 Alert Message
Executive Yuan Agricultural Committee (Agriculture and Food Administration) Low-temp Alert When the Central Meteorological Administration issued a special report on low temperature, it was estimated that the temperature of the flatland would fall below 6 degrees Celsius for 24 hours, for the municipalities and counties (cities) in these areas. [Low-temp Alert] Temp below 6 °C likely.Stay warm and alert to cold damage.COA 049-2341013 Alert Message
What does the Public Warning Cell Broadcast Message look like?

The message will indicate the type of alert (presidential alert, emergency alert, alert message, monthly test message), message name (eg [Earthquake Rapid Report]), and the message will end with a unit name.

Public Warning Cell Broadcast Service Public Warning Cell Broadcast Service
What should I do when I receive a Public Warning Cell Broadcast Message?

Follow the suggestion of the alert message and take action as soon as possible. Search the website of the issuing unit, reliable TV, radio and other media to see if there is more information.

Is there a charge for the Public Warning Cell Broadcast Message?

The public does not need to pay for receiving the Public Warning Cell Broadcast Messages.

What is the difference between cell broadcast messages and newsletters?

The Public Warning Cell Broadcast Service broadcasts the message to all 4G user's phones in a specific area at the same time, and when the mobile phone receives the alarm message, it also emits a special alarm sound or vibration. The general regional emergency newsletter service uses the general SMS system to transmit alarm messages.

How long does it take to send the Public Warning Cell Broadcast Messages?

After the alert message is sent from the issuing authority, the public can receive the message in about 4~10 seconds.

Public Warning Cell Broadcast Messages

Mobile phone related questions

How to receive the Public Warning Cell Broadcast Message?

To receive the Public Warning Cell Broadcast Message, you do not need to register or install the APP. As long as the mobile phone meets the specifications, it can receive the message. Mobile phones that meet the specifications can be found in the Public Warning Cell Broadcast Service Area of National Communications Commission. Check

Why can't my mobile phone receive the Public Warning Cell Broadcast Message?

Please upgrade the OTA software on your mobile phone first. If it still cannot receive normally after upgrading, please contact the mobile phone manufacturer for further information. For further information, please refer to the Public Warning Cell Broadcast Service Area of National Communications Commission. Check

Mobile Phone Settings
What should I do if my phone keeps receiving repeated alert messages?

At present, people who use some mobile phone brands (such as HUAWEI, Xiaomi MI, OPPO, etc.) have reported receiving the same message multiple times, mainly because the alert reminder is set to multiple reminders. Please upgrade the OTA software on the mobile phone and modify the mobile phone alert reminder settings.

Why are the friends sitting next to me receiving the Public Warning Cell Broadcast Message, but my mobile phone has not received it yet?

The reason why the mobile phone cannot receive the alert message is presumed as follows:

While the message is being sent, you are in a voice call.
When the message is sent, you are using 3G Internet access (APP background data transmission also counts).
The phone is on the flight mode.
The mobile phone has a special setting to reject "Alert Notification", "Emergency Alert" or "Test Message".
The firmware in the phone is not updated and it does not have the function of completely receiving the disaster alert message.
Do I need to connect to Wi-Fi to receive Public Warning Cell Broadcast Messages? When talking on the phone, will it affect the reception of Public Warning Cell Broadcast Message?

The mobile phone can receive the Public Warning Cell Broadcast Message without connecting to the Wi-Fi. It cannot receive the Public Warning Cell Broadcast Message only during the voice call. You need to return to the 4G or 3G WCDMA standby mode to receive the Public Warning Cell Broadcast Message. Please refer to the following table.

4G Phone Mode
Standby mode
4G data (Internet)
4G CSFB voice
4G VoLTE voice
4G Internet Access (during the public warning broadcasting) Able to receive alert message Able to receive alert message Unable to receive alert messages during phone call (within 3G network). The alert messages can be received when the user end the voice call and is back to the 4G network. Able to receive alert message
3G Phone Mode
Standby mode
3G data (Internet)
3G voice mode
4G Internet Access (during the public warning broadcasting) Standby mode Unable to receive alert message Unable to receive alert messages during phone call, the mesaage can be received when the the voice call is end and the phone is back to the 3G network.

Others

Can I choose not to receive the Public Warning Cell Broadcast Message?

Except for the presidential alert, emergency alert, alert message, and monthly test messages can be turned on or off from the interface of the mobile phone.

From the "Settings" on Android phones you can find the "Emergency Broadcast" setting in "Other Connections" in the Wireless & Internet category, and make sure that the emergency alert related settings are turned on.

For Apple iPhone, you can find the "Government Notification" function in "Settings > Notifications".

Why did the earthquake start before I receive the "Instant earthquake alert" message?

Because of the current seismic detection, signal analysis and seismic wave transmission, the application of disaster prevention and alert technology has the limitation of "early warning blind zone" in the earthquake, which is about 60-70 km in the epicenter radius. If you are outside of the "early warning blind zone", you will feel the earthquake before the warning is received, and the notification will not be received.

Is there a problem that the Public Warning Cell Broadcast Service will have a network congestion and the transmission speed will be slow?

The Public Warning Cell Broadcast Message transmission uses the cell broadcast system, which is not limited by the network bandwidth, so there is no problem such as network congestion and slow speed.

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