
Typhoon Tip, known in the Philippines as Super Typhoon Warling (international designation: T7920, JTWC designation: 23W) was the biggest and strongest known tropical cyclone on record. It was the 19th tropical storm and 12th typhoon of the 1979 Pacific typhoon season. The typhoon formed out of a disturbance in a monsoon trough on October 4 near Pohnpei. At its peak strength, it was also the biggest tropical cyclone on record, with a diameter of 2,220 km (1,380 mi). Tip made landfall on southern Japan on October 19, and became an extratropical cyclone shortly thereafter.