Regulations on the Centralized Issuance of Weather Forecasts and Warnings Article 11

Categories of typhoon warnings are as follows:1. Sea warning: 24 hours prior to the time that the radius of winds over 50km/hr of a typhoon may invade the waters, of 100 km in distance, surrounding Taiwan, Penghu, Kinmen, or Matsu, the CWB shall issue a sea warning which specifies the water(s) to be invaded as the warning area(s); and then renew the warning every three (3) hours or renew it at any time when necessary.2. Land warning: 18 hours prior to the time that the radius of winds over 50km/hr of a typhoon may invade the land area of Taiwan, Penghu, Kinmen, or Matsu, the CWB shall issue a land warning which specifies the city(ies)/county(ies) to be invaded as the warning area(s); and then renew the warning every three (3) hours or renew it at any time when necessary. Wind and precipitation forecasts with respect to the land warning shall also be issued.When a sea warning is issued while the radius of winds over 50km/hr of the typhoon may invade Ludao and Lanyu, the warning area(s) shall include Ludao and Lanyu.In case a typhoon occurs around the nearby water of Taiwan, Penghu, Kinmen, or Matsu, or there is a special change in the radius of near gale winds (Beaufort Scale 7), its moving speed, or the moving direction of a typhoon, the CWB may issue sea or land warning, or both of the sea warning and the land warning at the same time when necessary, exempting from the limitation of the subsections of Paragraph 1 of Article 11.When the radius of near gale winds (Beaufort Scale 7) leave the land of Taiwan, Penghu, Kinmen, or Matsu, the CWB shall terminate the land warning; when the radius of near gale winds (Beaufort Scale 7) leave the nearby waters of Taiwan, Penghu, Kinmen, or Matsu, the CWB shall terminate the sea warning; when the typhoon turns off or downgrades to a tropical depression, the CWB may terminate the typhoon warning directly.
中文原文 氣象預報警報統一發布辦法第11條
颱風警報之種類如下:
一、海上颱風警報:預測颱風之七級風暴風範圍可能侵襲臺灣本島、澎湖、金門或馬祖一百公里以內海域時之前二十四小時,應即發布海上颱風警報,將可能受侵襲之各海域列入警戒區域,以後每隔三小時發布一次,必要時得加發之。
二、陸上颱風警報:預測颱風之七級風暴風範圍可能侵襲臺灣本島、澎湖、金門或馬祖陸上之前十八小時,應即發布陸上颱風警報,將可能受侵襲之直轄市或縣市行政區列入警戒區域,以後每隔三小時發布一次,必要時得加發之,並發布必要之風雨預測相關資料。
海上颱風警報發布時,當預測颱風之七級風暴風範圍可能侵襲綠島、蘭嶼陸上時,應將綠島、蘭嶼列入警戒區域。
颱風發生於臺灣本島、澎湖、金門或馬祖近海,或颱風之暴風範圍、移動速度、方向發生特殊變化時,得即發布海上或陸上颱風警報,必要時並得同時發布海上及陸上颱風警報,不受第一項之限制。
颱風之七級風暴風範圍離開臺灣本島、澎湖、金門或馬祖陸上時,應即解除陸上颱風警報;七級風暴風範圍離開臺灣本島、澎湖、金門及馬祖近海時,應即解除海上颱風警報。
颱風轉向或消滅時,得直接解除颱風警報。

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