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The name Matmo (Chamorro: måtmo, [mɑtmo]) has been used for three tropical cyclones in the western North Pacific Ocean. The name was contributed by the United States and means “heavy rain” in Chamorro.[1] It replaced the name Chataan (Chamorro: chata’an, [tsætæʔæn]), meaning “nonstop rainy day” in Chamorro, after it was retired following the 2002 Pacific typhoon season.[2]

The name Matmo was retired following the 2025 Pacific typhoon season and a replacement name will be given at the 59th WMO/Typhoon Committee Annual Session in spring 2027.[3]

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