Typhoon Matmo, known in the Philippines as Typhoon Henry, was the first tropical cyclone to impact Taiwan in 2014. It was the tenth named storm and the fourth typhoon of the 2014 Pacific typhoon season. The typhoon is believed to be one of the main reasons behind the crash of TransAsia Airways Flight 222, which occurred a day after it made landfall. There were fifty-four passengers on board and a crew of four, of whom 48 were killed. Taiwan News reported that "first suspicions hinted" the accident might be related to Matmo. The typhoon developed from a cluster of thundershowers consolidating around an area of low pressure in the doldrums. It initially followed a westward track, then made a sharp northwest turn before making landfall on Taiwan, and then China. After moving further inland, Matmo slowly curved back northeastwards and became extratropical before its remnants affected the Korean Peninsula.

TransAsia Airways Flight 222 was a scheduled domestic passenger flight operated by TransAsia Airways from Kaohsiung, Taiwan, to Magong, Penghu Island. On 23 July 2014, the ATR 72-500 twin turboprop operating the route crashed into buildings during approach to land in bad weather at Magong Airport. Among the 58 people on board, only 10 survived.