Maritime typhoon warning - 24 hours before the predicted typhoon's Severe 7 storm wind range may hit Taiwan or the sea area within 100 kilometers of Kinmen and Matsu, the sea typhoon warning for each sea area should be issued immediately, and it will be issued every 3 hours thereafter. Send it. Land and sea typhoon warnings - 18 hours before the predicted typhoon's Severe 7 storm wind range may hit Taiwan, Kinmen, and Matsu on land, the land typhoon warnings for each area should be issued immediately, and issued every 3 hours thereafter, and additional issuances may be issued if necessary. When a typhoon occurs in the coastal areas of Taiwan, Kinmen, and Matsu, or when there are special changes in the typhoon's storm range, moving speed, or direction, a sea or land typhoon warning may be issued immediately, and if necessary, both sea and land typhoon warnings may be issued at the same time. Cancellation of Typhoon Warning - When the category 7 storm wind area of ​​the typhoon leaves Taiwan and Kinmen and Matsu on land, the land typhoon warning should be canceled immediately; When the typhoon turns or disappears, the typhoon warning must be lifted immediately.