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  2. January 1913 Atlantic coast storm - Wikipedia

    en.wikipedia.org/wiki/January_1913_Atlantic...

    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 .

  3. Altimeter setting - Wikipedia

    en.wikipedia.org/wiki/Altimeter_setting

    SPS/STD - 'Standard Pressure Setting' or just 'Standard' refers to the altimeter being set to the standard pressure of 1013.25 hPa. It is the setting that causes an altimeter to read the aircraft's flight level (FL). Flight levels are given in hundreds of feet (for example: FL100 = 10 000 ft). Atmospheric pressure changes over time and position.

  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. METAR - Wikipedia

    en.wikipedia.org/wiki/METAR

    SLP176 indicates the current barometric pressure extrapolated to sea level is 1,017.6 hPa (30.05 inHg). P0002 indicates that 0.02 inches (0.5 mm) of liquid-equivalent precipitation accumulated during the last hour. T10171017 is a breakdown of the temperature and dew point in eight digits separated into two groups of four. The first four digits ...

  6. List of atmospheric pressure records in Europe - Wikipedia

    en.wikipedia.org/wiki/List_of_atmospheric...

    The Danish Meteorological Institute report record barometric pressure for Denmark (since 1874) as: Highest air pressure: 23 January 1907, Skagen and Copenhagen 1062.2 hPa. [107] [108] Lowest air pressure: 20 February 1907, Skagen 943.5 hPa. [107] Danish records both occurred within a month during the same winter, and same winter as Norwegian ...

  7. Station model - Wikipedia

    en.wikipedia.org/wiki/Station_model

    On the top right corner of the model for a surface weather map is the pressure, showing the last two integer digits of the pressure in millibars, or hectopascals, along with the first decimal. For instance, if the pressure at a certain location is 999.7 hPa, the pressure portion of the station model will read 997.

  8. Barometric pressure - Wikipedia

    en.wikipedia.org/?title=Barometric_pressure&...

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  9. Ridge (meteorology) - Wikipedia

    en.wikipedia.org/wiki/Ridge_(meteorology)

    Ridge line extending to the left of the high pressure center (H). In meteorology a ridge or barometric ridge is an elongated area of relatively high atmospheric pressure compared to the surrounding environment, without being a closed circulation. [1] It is associated with an area of maximum anticyclonic curvature of wind flow.