September 28th, 2016

Typhoon Megi

Posted at 1:40 PM ET

typhoon-megi-smIn the Northwest Pacific Basin, Typhoon Megi made landfall in central Taiwan Tuesday afternoon, local time. The typhoon brought reports of excessive rainfall, flash-flooding, and roof damage for affected areas. Isolated rainfall amounts exceeding 1,250 millimeters (50 inches) were reported, with general rainfall amounts of 250 millimeters (10 inches) or more.

Megi then weakened before making final landfall on the southeast coast of Mainland China early Wednesday, local time. Excessive rainfall has been reported to produce flash-flooding and mudslides, and a significant landslide affecting a local village has been reported. At least five fatalities and 625 injuries have been reported. Our first thoughts and concerns are with those lost and directly affected by this event.


Megi track and position reports. Source: Guy Carpenter, Joint Typhoon Warning Center.

Hazard data illustrated in the CAT-i map was taken from GC AdvantagePoint®, Guy Carpenter’s web-based risk management platform. GC AdvantagePoint users can view impacted areas on any map as well as see how their portfolios were affected. Please contact your broker or cat modeling analyst for further information.

Meteorological Discussion

In the Northwest Pacific Basin, Typhoon Megi was first classified by the JTWC as a tropical depression at 00 UTC, September 23 and then upgraded to a tropical storm at 20 UTC, September 23. Megi then gained intensity to become a typhoon at 12 UTC, September 24, with one-minute sustained winds of 120 kilometers per hour (75 mph). A period of steady intensification then followed as Megi approached Taiwan. Megi strengthened to carry one-minute sustained winds of 185 kilometers per hour (115 mph) at 18 UTC, September 26, a Category 3 on the Saffir-Simpson Scale, with a central pressure of 940 hPa (mb) reported by the Japan Meteorological Agency (JMA). During this time, Megi was undergoing an eyewall replacement cycle, a process where the old eyewall of the storm weakens and expands, allowing a new eyewall to develop. After completion of this cycle, Megi was able to gain intensity while making final approach and landfall in Taiwan.

Megi made landfall in central Taiwan Tuesday afternoon, local time, near Hualien City. The JTWC reported one-minute sustained winds of around 215 kilometers per hour (135 mph) at 06 UTC, September 27, however, the Japan Meteorological Agency reported wind speeds that were lower. During this time sustained winds of 114 kilometers per hour (71 mph) were reported at Taiyuan International Airport in Taipei, with gusts to 160 kilometers per hour (99 mph). Wind gusts of 135 kilometers per hour (83 mph) and 170 kilometers per hour (105 mph) were also reported at Taipei and Taichung City, respectively. Excessive rainfall was also reported, with unofficial, isolated amounts of 1,300 millimeters (51 inches) reported in Yilan County, 945 millimeters (37.2 inches) reported at Taipingshan, and amounts exceeding 250 millimeters (10 inches) over a widespread area. The excessive rainfall brought the threat of flash-flooding and mudslides. After clearing Taiwan around 12 UTC, September 27, Megi had weakened due to land and topography interaction.

Media reports indicate that Megi then made final landfall on the southeast coast of Mainland China, just north of Quanzhou around 4:40 a.m., local time Wednesday. The JTWC reported one-minute sustained winds of around 120 kilometers per hour (75 mph) around 18 UTC, September 27. Megi brought excessive rainfall to produce widespread flooding and mudslides in Mainland China. Rainfall amounts exceeding 300 millimeters (12 inches) were reported in several areas. Megi has since weakened considerably and should soon dissipate. However, ongoing heavy rainfall with the threat of flooding, flash-flooding and mudslides are a concern.


Media reports indicate at least five fatalities and 625 injuries.

In Taiwan, widespread roof damage has been reported according to media reports. Power outages affected over 3.8 million homes, and at least 35,000 homes were without water. Water quality remains an ongoing concern for affected areas. Downed trees, power poles and power lines have been reported over a widespread area. A 635-ton crane was also brought down near Hualien harbor, crushing another building. At least 14,800 were evacuated prior to landfall, and around 4,300 remain in temporary shelters. Schools were closed, and nearly 300 flights were cancelled including several international flights.

In Mainland China, media reports indicate that a landslide has severely affected Sucun Village (Zhejiang Province); dozens of homes have been affected, and heavy casualties are possible with 27 reported missing. Several collapsed structures have been reported in Quanzhou. Flash flooding has caused one fatality in Fujian. Flash-flooding has also inundated areas of Xiamen and Fuzhou. At least 120,000 who work near the shore or at sea were moved by authorities. At least 31,700 fishing boats were recalled. Dozens of flights were cancelled, and schools were closed.

Sources: Agence France Presse, AIR Worldwide, Japan Meteorological Agency, Joint Typhoon Warning Center, Reuters, RMS, Weather Underground

Click here to register for e-mail updates from GC Capital Ideas >>

Guy Carpenter publishes CAT-i reports for major natural catastrophes worldwide. These reports cover catastrophes including worldwide tropical cyclones, earthquakes, major UK and European floods and any other natural event that is likely to incur a significant loss to the (re)insurance industry. Please email if you wish to be added to the free email distribution list.

Guy Carpenter compiles RISK-i reports for major technological or man-made events worldwide. These reports cover risks to property, transport and life including explosions, fires, crashes, engineering disasters and terrorist attacks that are likely to incur a significant loss to the (re)insurance industry. Please email if you wish to be added to the free email distribution list.

AddThis Feed Button
Bookmark and Share

Related Posts