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Falling trees killed two in the area—one in Chesterfield County and one in the city of Richmond. [7] The downed trees snapped many power lines, leaving about 365,000 Dominion Virginia Power customers in the Richmond area without power. [13] A portion of the roof of The Diamond, home of the Richmond Braves, was damaged by the winds. [26]
Atmospheric pressure, also known as air pressure or barometric pressure (after the barometer), is the pressure within the atmosphere of Earth. The standard atmosphere (symbol: atm) is a unit of pressure defined as 101,325 Pa (1,013.25 hPa ), which is equivalent to 1,013.25 millibars , [ 1 ] 760 mm Hg , 29.9212 inches Hg , or 14.696 psi . [ 2 ]
This was also its landfalling pressure; the only hurricane to hit the United States with a lower pressure at landfall was the Labor Day Hurricane of 1935. [ 7 ] [ 46 ] A reconnaissance flight indicated a pressure of 901 millibars (26.6 inHg), [ 47 ] but this pressure was later corrected in 1969 by researchers to 919 mb (27.14 inHg). [ 7 ]
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]
Inch of mercury (inHg and ″Hg) is a non-SI unit of measurement for pressure. It is used for barometric pressure in weather reports, refrigeration and aviation in the United States. It is the pressure exerted by a column of mercury 1 inch (25.4 mm) in height at the standard acceleration of gravity.
Pressure as a function of the height above the sea level. There are two equations for computing pressure as a function of height. The first equation is applicable to the atmospheric layers in which the temperature is assumed to vary with altitude at a non null lapse rate of : = [,, ()] ′, The second equation is applicable to the atmospheric layers in which the temperature is assumed not to ...
Comparison of the 1962 US Standard Atmosphere graph of geometric altitude against air density, pressure, the speed of sound and temperature with approximate altitudes of various objects. [ 1 ] The U.S. Standard Atmosphere is a static atmospheric model of how the pressure , temperature , density , and viscosity of the Earth's atmosphere change ...
Although the Hurricane Hunters observed hurricane-force winds, the storm had a small eye 5 mi (8.0 km) in diameter and a central barometric pressure of 1,002 mbar (29.6 inHg). The 100 mph (160 km/h) winds were therefore revised downward to 65 mph (105 km/h) late on October 5, though it was estimated that the storm attained hurricane status at ...
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