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Typhoon Nida (26W) Moves Slightly Northwestward

23.6N 134.2E

December 2nd, 2009 Category: Tropical Cyclones

Typhoon Nida (26W) - December 1st, 2009

Typhoon Nida (26W) - December 1st, 2009

Track of TY 26W - December 1st, 2009 © Univ. of Wisconsin

Track of TY 26W

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Typhoon Nida (TY 26W), located approximately 315 nautical miles southwest of Iwo To, has tracked north-northwestward at 7 knots over the last six hours. A finger of the mid-level subtropical ridge located to the east has continued to steer the system westward. Maximum significant wave height is 26 feet.

Animated infrared satellite imagery shows weakening convection with an embedded center while animated water vapor imagery and an SSMIS micrwoave image indicate the deep convection has shifted somewhat to the east of the low level circulation center (LLCC), suggesting the system has moved into an environment of moderate vertical wind shear. Accordingly, Dvorak estimates have dropped to 55-65 knots.

Nida is still expected to continue tracking generally northwestward before recurving ahead of a quickly approaching mid-latitude trough currently digging north of China. Over the next two days the system will continue to weaken due to increasing vertical wind shear and dry air entrainment. By TAU 48 Nida will complete transition into a very weak extratropical cyclone and its energy will continue tracking northeastward into the mid-latitudes.

Typhoon Nida (26W) Still Churning South-Southwest of Iwo To

21.7N 129.3E

December 1st, 2009 Category: Tropical Cyclones

Typhoon Nida (26W) - November 28th, 2009

Typhoon Nida (26W) - November 30th, 2009

Track of TY 26W - November 30th, 2009 © Univ. of Wisconsin

Track of TY 26W

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Typhoon Nida (TY 26w), located approximately 325 nautical miles south-southwest of Iwo To, has tracked northwestward at 4 knots over the past six hours. Maximum significant wave height is 34 feet.

The system has maximum sustained winds  of 90 knots, with higher gusts of up to 110 knots. Sixty-four knot winds extend outward for a 50 nautical mile radius from the center of Nida. The radius of 50 knot winds is between 90 and 95 nautical miles, and 34 knot winds reach a 150 nautical miles radius.

Nida (26W) Becomes Category 5 Super Typhoon – November 29th, 2009

20.4N 137.8E

November 29th, 2009 Category: Image of the day, Tropical Cyclones

Typhoon Nida (26W) - November 28th, 2009

Typhoon Nida (26W) - November 28th, 2009

Track of STY 26W - November 28th, 2009 © Univ. of Wisconsin

Track of STY 26W

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Super Typhoon Nida (STY 26w), located approximately 350 nautical miles south-southwest of Iwo To, has tracked north-northeastward at 2 knots over the past six hours. Maximum significant wave height is 34 feet.

Maximum sustained winds are at 140 knots, with stronger gusts of up to 170 knots. Winds of 64 knots extend outward for a radius of 50 to 55 nautical miles from the eye of the storm, while the radius of winds of up to 50 knots is 75 to 80 nautical miles.

Category One Typhoon Nida (26W) in Western Pacific – November 25th, 2009

14.4N 139.2E

November 25th, 2009 Category: Image of the day, Tropical Cyclones

Typhoon Nida (26W) - November 25th, 2009

Typhoon Nida (26W) - November 25th, 2009

Track of TY 26W - November 25th, 2009 © Univ. of Wisconsin

Track of TY 26W

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Typhoon Nida (26W), located approximately 170 nautical miles south-southwest of Guam, has tracked north-northwestward at 10 knots over the past six hours. Maximum significant wave height at is 21 feet. Nida has maximum sustained winds near 64 knots (74 mph or 119 km/hr), making it a Category One typhoon.

NASA and JAXA report that Typhoon Nida is lashing Yap State in the Western Pacific. Most of the rainfall from Nida has been between 20 and 40 millimeters (.78 to 1.57 inches) per hour, with areas near the system’s center falling at as much as 2 inches of rain per hour (considered heavy rainfall). Nida is forecast to move in a northwesterly direction and continue to strengthen over the next several days.

A typhoon warning is in effect for Faraulep, a small atoll in the western Caroline Islands, located within Yap State, in the Federated States of Micronesia. This type of warning means that typhoon conditions of sustained winds of 64 knots or higher associated with the typhoon are expected in the specified coastal area within the next 24 hours.

A tropical storm watch is also in effect in the Western Pacific Islands for Ulithi, an atoll in the Caroline Islands, located about 103 nautical miles east of Yap, and for Fais, one of the outer islands of the State of Yap. That means tropical storm conditions can be expected in the next 36 hours.

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.