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  2. List of weather records - Wikipedia

    en.wikipedia.org/wiki/List_of_weather_records

    Highest air pressure ever recorded [above 750 meters (2,461 feet)]: 1084.8 hPa (32.03 inHg); Tosontsengel, Zavkhan, Mongolia, 19 December 2001. [334] This is the equivalent sea-level pressure ; Tosontsengel is located at 1,300 metres (4,300 ft) above sea level.

  3. U.S. Standard Atmosphere - Wikipedia

    en.wikipedia.org/wiki/U.S._Standard_Atmosphere

    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 ...

  4. Atmospheric pressure - Wikipedia

    en.wikipedia.org/wiki/Atmospheric_pressure

    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 ]

  5. Records Shattered From Northern Plains To The South As Arctic ...

    www.aol.com/over-100-cold-temperature-records...

    An intense blast of cold air shattered records in the central United States this week with temperatures up to 50 degrees below average. The bitter cold is pushing into the South and East to end ...

  6. The Coldest and Warmest Cities in Each State

    www.aol.com/finance/coldest-warmest-cities-state...

    Warmest: Mobile, Alabama. The average high temperature in Mobile is a balmy 78 degrees. A few other cities, also on the Gulf in the southern part of the state, have the same average, so if you're ...

  7. National Weather Service - Wikipedia

    en.wikipedia.org/wiki/National_Weather_Service

    The stations measure wind speed, direction, and gust; barometric pressure; and air temperature. In addition, all buoy and some C-MAN stations measure sea surface temperature, and wave height and period. [44] Conductivity and water current are measured at selected stations. All stations report on an hourly basis.

  8. Weather forecasting - Wikipedia

    en.wikipedia.org/wiki/Weather_forecasting

    Measurements of barometric pressure and the pressure tendency (the change of pressure over time) have been used in forecasting since the late 19th century. [66] The larger the change in pressure, especially if more than 3.5 hPa (2.6 mmHg ), the larger the change in weather can be expected.

  9. Pressure system - Wikipedia

    en.wikipedia.org/wiki/Pressure_system

    Map of pressure systems across North America. A pressure system is a peak or lull in the sea level pressure distribution, a feature of synoptic-scale weather.The surface pressure at sea level varies minimally, with the lowest value measured 87 kilopascals (26 inHg) and the highest recorded 108.57 kilopascals (32.06 inHg).