Short answer. Thailand ran its first Cell Broadcast emergency alert tests on 2, 7 and 13 May 2025. The Department of Disaster Prevention and Mitigation (DDPM) sends the messages with six partner agencies; they pop up on phones with a loud tone, in Thai and English 1. For tsunamis, the National Disaster Warning Center runs 354 warning towers and 674 small towers 2.
How do phone alerts work in Thailand?
Cell Broadcast messages are sent through the mobile networks to phones in a given area. In Thailand 1:
- Sender: DDPM, with the Ministry of Digital Economy and Society, the NBTC, and the operators AIS, True and National Telecom.
- Format: a message that pops up on screen with a loud tone.
- Languages: Thai and English.
- Scales: small-scale (within buildings), medium-scale (district level) and large-scale (provincial level).
When were the tests held?
On 2, 7 and 13 May 2025 at 1:00 pm 1. The test message read: "This is a test message from the DDPM. No action required." 1.
Are there sirens in Thailand?
The National Disaster Warning Center (NDWC, part of DDPM) runs warning towers, mainly for tsunamis. An NDWC presentation of 4 September 2024 lists 2:
| Equipment | Number |
|---|---|
| Warning towers | 354 |
| Small towers (local dissemination network) | 674 |
| Of which, towers in the 6 Andaman provinces | 79 |
Thailand publishes no national siren-tone code, such as an air raid signal or an all-clear. What to do when a tsunami warning sounds is explained in /guides/tsunami.
Is there an official alert app?
The press reports an app called THAI DISASTER ALERT, run by DDPM, as the official warning app. Phaenyx could not confirm this on an official page, so check that any app you install is published by DDPM.
How should I prepare to receive alerts?
- Keep your phone's emergency alert settings on.
- Keep a battery-powered or hand-crank radio for power cuts: /guides/emergency-radio, /guides/power-outage.
- Know what to do when an alert arrives: /guides/shelter-or-evacuate, /guides/air-raid-alert, /guides/flood-preparedness, /guides/earthquake-preparedness.
- Save the DDPM hotline 1784: emergency contacts.
Frequently asked questions
Will I receive alerts in English in Thailand?
Yes. The Cell Broadcast messages tested in May 2025 were in Thai and English 1.
Do I need to register for Thai emergency alerts?
Phaenyx found no official information on registration. The messages are sent by DDPM with the operators AIS, True and National Telecom 1.
Does Thailand have air raid sirens?
No official national siren-tone code (air raid or all-clear) is published. The tower network run by NDWC is mainly for tsunamis 2.
How many tsunami towers are there on the Andaman coast?
79 towers in the 6 Andaman provinces, out of 354 nationwide, according to NDWC (September 2024) 2.
Sources
- Government Public Relations Department (PRD) — Thailand to Test New Emergency Alert System — https://thailand.prd.go.th/en/content/category/detail/id/52/iid/384120 (accessed 2026-10-20)
- National Disaster Warning Center (NDWC), via OceanExpert (IOC-UNESCO) — NDWC presentation to the UNESCO-IOC Tsunami Preparedness Capacity Assessment Team and ESCAP (4 September 2024) — https://oceanexpert.org/downloadFile/57257 (accessed 2026-10-20)
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Sources
- Government Public Relations Department (PRD) · Thailand to Test New Emergency Alert System checked 2026-10-20
- National Disaster Warning Center (NDWC), via OceanExpert (IOC-UNESCO) · NDWC presentation to the UNESCO-IOC Tsunami Preparedness Capacity Assessment Team and ESCAP (4 September 2024) checked 2026-10-20