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Highest air pressure ever recorded [above 750 meters (2,461 feet)]: 1084.8 hPa (32.03 inHg); Tosontsengel, Zavkhan, Mongolia, 19 December 2001. [330] This is the equivalent sea-level pressure ; Tosontsengel is located at 1,300 metres (4,300 ft) above sea level.
A below-sea-level surface pressure record of 1,081.8 hPa (31.95 inHg) was set on 21 February 1961. [13] The lowest non-tornadic atmospheric pressure ever measured was 870 hPa (0.858 atm; 25.69 inHg), set on 12 October 1979, during Typhoon Tip in the western Pacific Ocean. The measurement was based on an instrumental observation made from a ...
However, with a barometric pressure of 895 mbar (hPa; 26.43 inHg), Rita is the strongest tropical cyclone ever recorded in the Gulf of Mexico. [64] In between Rita and Katrina is Hurricane Allen. Allen's pressure was measured at 899 mbar. Hurricane Camille is the sixth strongest hurricane on record.
On 26 January 1884, during the Ochtertyre storm the Ben Nevis summit weather station recorded a low pressure of 784.7 hPa (at high altitude (above 750 m) and not reduced to sea level) this is proposed as being almost certainly the lowest surface pressure ever recorded in the UK, [66] though due to altitude and not being a value reduced to sea ...
Toronto pressure fell to 28.40 inches, breaking its record by 0.17. The 956.0 mb (28.23 inHg) barometric pressure measurement recorded in Mount Clemens, Michigan, was the third-lowest non-tropical atmospheric pressure recorded in the mainland United States [6] and the lowest in the Central United States. [2]
At the time, this was the lowest pressure ever recorded in the United States. [4] Using this measurement, the Atlantic reanalysis project calculated that the hurricane struck Louisiana with a lower pressure: 944 mbar (944 hPa; 27.9 inHg). Analysis of onshore observations also suggested that the storm made landfall with concentric eyewalls. [1]
This is the lowest central pressure on record for any Atlantic hurricane, [2] breaking the previous record of 888 mbar (26.2 inHg) set by Hurricane Gilbert in 1988. [4] Wilma's intensification rate broke all records in the basin, with a 24–hour pressure drop of 97 mbar (2.9 inHg); this also broke the record set by Gilbert.
The lowest confirmed barometric pressure reading, 955.0 mb (28.20 inHg), for a non-tropical system in the continental United States (CONUS) was recorded during this storm at Canton, New York. [2] [3] This broke the record low of this type set by the January 1886 Blizzard. The lowest pressure reading of this type was later equalled on March 7 ...