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Get the Tucson, AZ local weather forecast by the hour and the next 10 days. ... 29.93 in Pressure--UV Index. 5:36PM Sunset. ... USA TODAY 11 minutes ago Pacific Palisades wildfire rages as tens of ...
Get the Tucson, AZ local weather forecast by the hour and the next 10 days.
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 ]
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30.33 in Pressure--UV Index. 4:29PM Sunset. 4 mph F 6 km/h C Wind. 30 ... USA TODAY 3 minutes ago 10 dead, 10K structures destroyed as LA fires turn neighborhoods into ash: Live updates.
at each geopotential altitude, where g is the standard acceleration of gravity, and R specific is the specific gas constant for dry air (287.0528J⋅kg −1 ⋅K −1). The solution is given by the barometric formula. Air density must be calculated in order to solve for the pressure, and is used in calculating dynamic pressure for moving vehicles.
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.
The general synopsis follows, giving the position, pressure (in millibars) and track of pressure areas (e.g., "Low, Rockall, 987, deepening rapidly, expected Fair Isle 964 by 0700 tomorrow"). With the information provided in the Shipping Forecast it is possible to compile a pressure chart for the coasts of northwestern Europe.