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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]
The JTWC also indicated that Vongfong had become equivalent to a Category 5 hurricane on the Saffir–Simpson hurricane wind scale, with maximum one-minute sustained winds at 285 km/h (177 mph). Additionally, although the typhoon was still generally tracking westward, it noticeably slowed down due to the weakening subtropical ridge.
935 hPa ; 27.61 inHg: Category 5-equivalent super typhoon ... a station on Qizhou Island recorded a sea level pressure of 899.2 millibars, the lowest sea level ...
[19] [20] it began to make a sudden westward jog and mild decrease in wind shear made the JTWC to upgrade it again into a Category 1-equivalent tropical cyclone. [21] Nine hours later, Cyclone Asani was further downgraded into a tropical storm, it began to weaken due to higher wind shear as well as dry air intrusion. [ 22 ]
At 1800 UTC on August 23, the JMA assessed the typhoon to have reached its peak intensity with maximum sustained winds of 205 km/h (127 mph) and a minimum barometric pressure of 910 mbar (hPa; 26.87 inHg). [2] An intense albeit average-sized typhoon, Chaba held this intensity for two days before dry air began to impact the cyclone.
By 12:00 UTC, the JMA and JTWC reported that Typhoon Yutu had attained its peak intensity, with the former estimating maximum sustained winds of 215 km/h (130 mph) and a barometric pressure of 900 hPa (26.58 inHg), and the latter estimating 1-minute sustained winds of 280 km/h (175 mph), making Yutu equivalent to a Category 5 hurricane on the ...
Typhoon Son-Tinh (transliterated from Vietnamese Sơn Tinh), known in the Philippines as Severe Tropical Storm Ofel, was a powerful, late-forming typhoon that devastated the Philippines with tropical storm strength, and battered Northern Vietnam with hurricane-force winds at landfall on October 28, 2012.
953 mbar ; 28.14 inHg: Overall effects; ... elsewhere, they were equivalent to about 10-year ... The tide gauge at Gulfport recorded a water level of 5.6 ft ...