Super Typhoon Nida (Vinta) 2009

Early on November 21 the JTWC reported that an area of convection had persisted within a monsoon trough about 880 km, (545 mi) to the southeast of Guam.[208][209] At this time the system was moving around the subtropical ridge of pressure, with an anticyclone over the cyclone helping the convection to consolidate over a broad and elongated low level circulation center which was located in an area of minimal vertical wind shear.[208][209] Later that morning a Tropical Cyclone Formation Alert was released as deep convection increased in organization with multiple bands of convection starting to wrap into the developing low level circulation center. The system was then declared as a tropical depression by the JMA later that day before the JTWC followed suit early the next day, who assigned the designation of 26W to the depression.[210][211] On November 23, the JTWC upgraded the system to a tropical storm[212], and JMA followed suit allocating the name Nida[213]. Later the next day, JTWC reported that Nida rapidly intensified into a the equivalent of a category 1 typhoon. The next day JMA upgraded Nida to a Severe Tropical Storm[214] Intensification was anticipated until in the afternoon of November 25, then JTWC reported that Nida intensified from category 2 to a category 4 super typhoon equivalent. While JMA also upgraded it to typhoon status. At the same time an eye wall structure had formed. During the evening of November 25, Nida further intensified into an extremely intense Category 5 equivalent super typhoon, according to the JTWC, attaining winds of 295 km/h (185 mph) as it moved north west past Guam. Nida became the first storm of this intensity in the basin since Typhoon Jangmi in 2008, and the first anywhere in the world since Hurricane Wilma in 2005. Additionally, the JMA reported that the barometric pressure had decreased to 905 mbar, ranking Nida as the strongest storm to form during 2009 worldwide, only slightly eclipsing Hurricane Rick's intensity. Later, Nida was downgraded to a category 4 equivalent, due to an eyewall replacement cycle, but shortly regained strength, and on November 28, Nida re-intensified to a Category 5 typhoon. It later stalled and remained stationary for some time while gradually weakening into a Category 1 typhoon by November 30. On December 1, Nida weakened to a JMA Severe Tropical storm, with top winds weakening to 60 knots as Nida remained nearly stationary. By December 2, Nida began to move northward slowly, while weakening further to JMA Tropical Storm status. It is, as of December 2, forecast to move east and dissipate over the Pacific. On the December 3rd, Nida (Vinta) weakened into a PAGASA tropical depression.

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[tsewaichak]

It isn't stronger than Tip! Tip is 305km/h but Nida only 296km/h!

[Gamedraco]

They said Nida was strongest and most intense storm in the world since Hurricane Wilma in 2005 with 185 mph 1 minute sustained winds and a confirmed pressure of 905 millibars although some put the pressure at 869 millibars breaking Typhoon Tip's.

It was enormous too with sustained gale force winds diameter of about 700 miles about half the size of Typhoon Tip.