Powerful Typhoon Megi Nearing Landfall on Taiwan

Powerful Typhoon Megi is within a few hours of making landfall on the east coast of Taiwan.  At 11:00 p.m. EDT on Monday the center of Typhoon Megi was located at latitude 23.3°N and longitude 122.6°E which put it about 175 miles (280 km) southeast of Taipei, Taiwan.  Megi was moving toward the northwest at 15 m.p.h. (24 km/h).  The maximum sustained wind speed was 115 m.p.h. (185 km/h) and there were wind gusts to 145 m.p.h. (230 km/h).  The minimum surface pressure was 947 mb.

Megi is a large powerful typhoon and it is the equivalent of a major hurricane.  It has a big circular eye with a diameter of about 60 miles (95 km).  Winds to typhoon force extend out about 50 miles (80 km) from the center and winds to tropical storm force extend out over 200 miles (320 km) from the center.

The Hurricane Intensity Index (HII) for Typhoon Megi is 20.6.  The Hurricane Size Index (HSI) is 21.1 and the Hurricane Wind Intensity Size Index (HWISI) is 41.7.  Those indices suggest that Typhoon Megi is capable of causing widespread major wind damage.  The HII for Typhoon Megi is the same as the HII for Hurricane Rita when it made landfall in Louisiana in 2005.  The HSI for Megi is slightly smaller than the HSI for Rita.  Thus, Typhoon Megi is as intense as Hurricane Rita was when it made landfall, but Megi is slightly smaller than Rita was in 2005.

A subtropical ridge is steering Typhoon Megi toward the northwest.  Typhoon Megi will make landfall on the east coast of Taiwan near Hualien in a few hours.  Megi will cross Taiwan and it will make a second landfall on the east coast of China near Quanzhou and Xiamen in about 24 hours.  Typhoon Megi will bring strong winds and very heavy rain to the northern two thirds of Taiwan.  The heavy rain will create a serious risk for flash flooding.  Megi will weaken as it crosses Taiwan,   Typhoon Megi will also bring gusty winds and heavy rain when it reaches the east coast of China.  Typhoon Meranti caused serious damage in parts of Fujian province and Typhoon Megi will bring heavy rain to some of those same areas.  The northern side of Typhoon Megi may also bring gusty winds to the southernmost Ryukyu Islands.