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Posts tagged Typhoon Megi

Comparative Look at Megi as Tropical Depression and Typhoon

16.4N 122.7E

October 19th, 2010 Category: Tropical Cyclones

Tropical Depression Megi (15W) - October 13th, 2010

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Track of TY 15W

These images offer a comparative look at the tropical storm system known as Megi (15W). The still images show the system as a tropical depression on October 13th, while the animated imagery shows the system at typhoon strength on October 18th. The following is the history of the storm’s development:

Late on October 12, the JMA reported that a tropical depression had formed to the west of Guam. During October 13, the JTWC designated the tropical depression as 15W.  Later that day, the JMA and the JTWC reported that the depression had intensified into a tropical storm and named it as Megi.

On October 15, The JTWC reported that the storm had intensified into a category 2 typhoon, but the JMA were only monitoring the system as a Severe Tropical Storm.[83] [84] Later that day, the JMA reported that the storm strengthened into a typhoon.

Early on October 16 the system entered the Phillipine Area of Responsibility and the PAGASA began to issue advisories on Megi, giving it the local designation of “Juan”. That same day, Megi continued to intensify and was upgraded by the JTWC to a category 3 typhoon.

Early on October 17, the JTWC reported that Megi had intensified into a category 5 super typhoon– the first super typhoon of the season and the first since Nida in November 2009. In the night of October 17, the intensity of Megi strengthened to 895 hPa (mbar), making Megi the strongest typhoon since Typhoon Yuri in 1991, and the first Pacific typhoon to reach lower than 900 hPa (mbar) in the 21st century and the first to do so anywhere in the world since Hurricane Wilma in the Atlantic in 2005.

It was also the first tropical cyclone in the 21st century to have one-minute sustained winds of 190-mph, and the first since Hurricane Allen in the Atlantic in 1980. In the morning of October 18, Megi continued to intensify to 885 hPa (mbar), making Megi the strongest typhoon since Typhoon Vanessa in 1984. It made landfall at that intensity, the most intense landfalling storm ever recorded anywhere in the world, surpassing the 1935 Labor Day hurricane.

Typhoon Megi (15W) Expected to Intensity and Make Landfall Over Luzon – October 16th, 2010

20.0N 130.0E

October 16th, 2010 Category: Image of the day, Tropical Cyclones

Typhoon Megi (15W) - October 15th, 2010

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Track of TY 15W

Typhoon Megi (15W) is located approximately 780 nm east of Manila, Philippines, and has tracked northwestward at 15 knots over the past six hours. Maximum significant wave height is 27 feet.

Animated infrared (IR) satellite imagery and an AMSU microwave image depict a well-defined low level circulation center (LLCC) with tightly-curved banding.

Animated water vapor imagery continues to indicate good overall outflow with some improvement along the northwest quadrant as the tutt low, previously located near 20N 130E, begins to fill and move northwestward.

The current intensity of 95 knots is slightly higher then Dvorak estimates of 90 knots from PGTW and RJTD based on an improved banding signature in IR imagery over the past 6 hours.

TY 15W is currently tracking northwestward along the southwestern periphery of the mid-level subtropical ridge (STR) toward a weakness associated with a major mid-latitude shortwave trough. As the trough continues to propagate northeastward, the STR is expected to reorient and re-build to the west, allowing the system to turn westward between TAU 24 and TAU 36.

Megi is forecast to continue to intensify under favorable upper level and oceanic (high SST and high ocean heat content) conditions as it approaches Luzon. The system is expected to make landfall over northern Luzon between TAU 48 and TAU 72 at or near super typhoon intensity and should weaken considerably due to interaction with the mountainous terrain of Luzon. After TAU 72, Megi is expected to re-emerge into the south China Sea at typhoon intensity and track westward toward Hainan.