Climatology of Landfalling Tropical Cyclone Winds in the Southeast Asian Region Using the Deviation Angle Variance

A wind radii model using the deviation angle variance technique was applied to 523 tropical cyclones (TCs) in the Western North Pacific region from 1998 to 2018. The model, which uses high resolution satellite cloud images, was used to investigate the impact of the 34-, 50- and 64-kt winds from landfalling TCs. The wind impact analysis showed that the regions most exposed to TC tracks of Taiwan and the Philippines experienced 34-kt winds annually, and that these winds extended far into the mainland (up to approximately 500 km). The 50- and 64-kt winds occurred less frequently along the length of the Philippines but only extended down to the center of Vietnam and reached around 100 to 200 km inland