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Above the TA, the aircraft altimeter pressure setting is changed to the standard pressure setting of 1013 hectopascals (equivalent to millibars) or 29.92 inches of mercury, with the aircraft altitude will be stated as a flight level instead of altitude. In the United States and Canada, the transition altitude is 18,000 ft (5,500 m). [5]
[3] [4] [5] During that day, the depression’s low level circulation center continued to rapidly consolidate, while bands of atmospheric convection built and wrapped into the center. [3] As a result, both the JMA and JTWC reported that the depression had developed into a tropical storm, with the JMA naming it Haima after the Chinese word for a ...
Tropical Storm Rumbia was a rather weak but very destructive tropical cyclone that caused widespread and disastrous flooding in East China in August 2018. The twenty-second officially recognized tropical cyclone of the 2018 Pacific typhoon season, Rumbia developed from an area of low pressure that developed southeast of the Ryukyu Islands on August 13.
The JMA assessed that the typhoon's central pressure bottomed out at 18:00 UTC, with 10-minute sustained winds of 205 km/h (125 mph) and a central minimum pressure of 905 hPa (mbar; 26.73 inHg). [ 17 ] [ 9 ] The JTWC noted additional strengthening on September 12, and assessed Mangkhut to have reached its peak intensity at 18:00 UTC, with one ...
Typhoon Wutip, known in the Philippines as Tropical Depression Betty, was the most powerful February typhoon on record, surpassing Typhoon Higos of 2015. [1] The third tropical cyclone, second tropical storm, and the first typhoon of the 2019 Pacific typhoon season, Wutip originated from a low-pressure area on February 16, 2019, that generally tracked westward, passing just south of the ...
The typhoon reached its first peak intensity on July 6; subsequently, Maria weakened due to an eyewall replacement cycle, but it reintensified and reached a second, stronger peak intensity on July 9 with 10-minute sustained winds of 195 km/h (121 mph) and a minimum pressure of 915 hPa (mbar; 27.02 inHg).
Allen's rapid intensification continued during this time, as it was steered by a mid- to upper-level ridge to its north. Shortly before 0000 UTC on August 5, the hurricane's minimum pressure decreased to 924 mbar (924 hPa; 27.3 inHg), which was noted as equivalent to Hurricane David in the previous season. [5]
On May 13, an area of disturbed weather within the Intertropical Convergence Zone (ITCZ) crossed Panama and Colombia into the East Pacific. Strong westerly wind shear inhibited this disturbance initially, but atmospheric conditions improved over subsequent days, [3] allowing it to become the season's first tropical depression around 18:00 UTC on May 17. [4]