Regulations on the Centralized Issuance of Weather Forecasts and Warnings Article 16

When the CWB monitors a tsunami caused by an earthquake with wave height above 50 cm around the coastal area of this country, a tsunami report shall be issued immediately and be informed to the central emergency management authorities, relevant agencies, and the media, to take necessary actions.
中文原文 氣象預報警報統一發布辦法第16條
中央氣象局觀測到我國沿海發生波高五十公分以上之海嘯時,應儘速發布海嘯報告,並迅速通報中央災害防救主管機關、相關單位以及新聞傳播機構,採取必要措施。

English translation for reference only; the Chinese text prevails. Not legal advice.