Joint Typhoon Warning Center Story Archive

Joint Typhoon Warning Center Increases Warnings and Improves Graphics  (15 December 2017)
The first warning on a Southern Hemisphere tropical cyclone was issued Nov. 29, 2017 by the Joint Typhoon Warning Center (JTWC) in Pearl Harbor, Hawaii. Dahlia (Tropical Storm 01S) was the first Southern Hemisphere system where warnings were issued every six hours without higher authority request.

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