Observed Sea Level Pressure station reporting symbol
The value highlighted in yellow located in the upper right corner (in the diagram above) represents the last three digits of the observed pressure reading in millibars (mb).
Sea Level Pressure - the atmospheric pressure computed from the station pressure for the given elevation of the station above mean sea level ...
sea level - The level of the sea after averaging out the short-term variations due to wind waves. It is used loosely as a synonym for mean sea level.
SEA LEVEL
The height or level of the sea surface at any time. It is used as a reference for elevations above and below.
SEA LEVEL PRESSURE
The atmospheric pressure at mean sea level, usually determined from the observed station pressure.
Sea Level Pressure The pressure value obtained by the theoretical reduction or increase of barometric pressure to sea-level.
SEA LEVEL PRESSURE The atmospheric pressure at mean sea level, usually determined from the observed station pressure.
SEA MILE A unit of length distinguished from a nautical mile. One sea mile is equivalent to 1,000 fathoms (6,000 feet).
sea level: the imaginary line from which sea depth and land elevation are measured.
stratosphere: region between the troposphere and mesosphere, extending from 10 to 30 miles above the Earth's surface.
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sea level: the height or level of the sea, used as a reference for elevation. "Above" or "below" sea level.
Sea level pressure The atmospheric pressure at mean sea level.
Secondary air pollutants Pollutants that form when a chemical reaction occurs between a primary air pollutant and some other component of air.
Sea level pressure The atmospheric pressure at mean sea level.
Semiarid See Steppe.
Sensible heat transfer Movement of heat from one place to another as a consequence of conduction or convection or both.
Sea Level The datum against which land elevation and sea depth are measured. Mean sea level is the average of high and low tides.
Mean Sea Level - the height of the sea surface midway between its average high and low water positions ...
Mean Sea Level (MSL): The average height of the surface of the sea at a particular location for all stages of the tide over a 19-year period. This is usually determined from the hourly height readings of the tide gage at that site.
Mean Sea Level
(MSL) (1) The average sea surface level for all stages of the tide over a 19-year period, usually determined from the hourly heights observed above a fixed reference level. (2) In aerology, the reference surface for all altitudes.
mean sea level—The average height of the surface of the sea for all stages of tide; used as reference for elevations throughout the U.S.
Mean Sea Level (MSL)- The average height of the sea surface, based upon hourly observation of the tide height on the open coast or in adjacent waters that have free access to the sea.
sea level atmospheric pressure p0 = 101325 Pa = 1013.25 mbar or hPa = 101.325 kPa (= 101325 kg/m·s2)
sea level standard temperature T0 = 288.15 K
Earth-surface gravitational acceleration g = 9.80665 m/s2.
dry adiabatic lapse rate L = âˆ'0.
SEA LEVEL - The average height of the earth's oceans. Often referred to as mean sea level, or MSL. Elevation and altitude is often measured relative to sea level. Normal mean sea-level pressure, or MSLP, is 1016 mb, or 30" of mercury (14.
Mean Sea Level. It is necessary to convert the pressure readings to equivalent mean sea level pressures, ...
MEAN SEA LEVEL (MSL) - The average height of the sea which is used as a reference for elevations in aviation.
MECHANICAL TURBULANCE - Turbulance created by obstacles near the ground as air passes close to them.
Lowest sea level pressure recorded. 870 mb. 25.70" Typhoon Tip. Oct. 1979.
The actual sea level resulting from astronomical tide combined with the storm surge. This term is used interchangeably with "hurricane tide."
Storm Total Precipitation ...
ASL- Above Sea Level
ATTM- AT The Moment
AVN- Aviation Model. One of the short term synoptic forecast models ...
MSL- Mean sea level.
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NOAA- Natural Oceanic and Atmospheric Administration; parent agency of the National Weather Service in the Department of Commerce.
MSLP: Mean sea level pressure.
NCDC: National Climatic Data Center. Located in Asheville, North Carolina, the agency that archives climatic and forecast data from the National Weather Service.
Mean Sea Level(MSL) - The arithmetic mean of hourly water elevations observed over a specific 19-year tidal epoch.
Air pressure at sea level fluctuates around 1,013 hectopascals (hPa). It can drop to 970 hPa during severe storms. In a high pressure system it can reach 1040 hPa.
MSLP - Mean sea level pressure.
N
NCEP - National Centers for Environmental Prediction. Central computer and communications facility of the National Weather Service; located in Washington, DC.
Quasi-nonhydrostatic (QNH) Pilots, air traffic control (ATC) and low frequency weather beacons use this pressure setting to refer to the barometric altimeter setting that causes the altimeter to read altitude above mean sea level within a certain ...
Geopotential HeightThe height above sea level of a pressure level. For example, if a station reports that the 500 mb height at its location is 5600 m, ...
ASLAbove Sea LevelASOSAutomated Surface Observing System. A list of stations currently active and available through the NWS website can be found here.
HeightIn meteorology, usually a reference to Geopotential Height; roughly the height above sea level of a pressure level.
Field elevation The officially designated elevation of an airport above mean sea level, taken as the highest point on any of the runways of the airport. Same as airport elevation.
A trough on a mean sea level pressure chart, (or an upper air contour chart) can be picked out by an arrangement of isobars (contours) which are concave towards an area of low pressure (low contour height) along a particular axis, ...
This "zero" can be referenced (usually within ten feet of the bottom of the channel) to mean sea level, or to any other recognized datum.
weather observing, this is the usually conception of horizon. Nearby prominences are said to obscure the horizon and are not considered to be a part of it. The minimum desirable horizon distance should be of the order of three miles. 3) Sea level ...
NAO Index - This index measures the anomalies in sea level pressure between the Icelandic low pressure system and the Azores high pressure system.
An abnormal rise in sea level accompanying a hurricane or other intense storm, and whose height is the difference between the observed level of the sea surface and the level that would have occurred in the absence of the cyclone.
CELSIUS TEMPERATURE SCALE A temperature scale where water at sea level has a freezing point of 0°C (Celsius) and a boiling point of +100°C. More commonly used in areas that observe the metric system of measurement.
A column of air in cross section, measured from sea level to the top of the atmosphere, would weigh approximately 14.7 pounds per square inch (psi). The standard value for atmospheric pressure at sea level is: 29.92 inches or 760mm of mercury; 1013.
When it reaches the top, it diverges radially, as the characteristic bands of cloudiness, that curve to the right in response to Coriolis forces, to return to sea level at a distance of 500 to 1000 km.
Storm Surge: An abnormal rise local rise in sea level accompanying an intense storm system, either tropical or extratropical caused by the storm pushing a wall of water ahead of it.
Storm surge A rise in sea level along a shore caused primarily by strong onshore winds and, to a lesser extent, low air pressure associated with a storm (often a hurricane); may be responsible for considerable coastal erosion and flooding.
Coastal Flooding - It's when winds and/or tides cause a rise in the sea level that floods coastal areas.
Cold Front - A boundary between two air masses, one cold and the other warm, moving so that the colder air replaces the warmer air.
The increase in mean sea level caused by the "piling up" of water on the coastline by wind.
Windward
Upwind, or the direction from which the wind is blowing: the opposite of leeward.
Altitude - Height expressed as the distance above a reference point, which is normally sea level or ground level.
Altocumulus - Mid-altitude clouds with a cumuliform shape.
Altostratus - Mid-altitude clouds with a flat sheet-like shape.
Aleutian Low The low pressure center located near the Aleutian Islands on mean charts of sea level pressure during the winter. It represents one of the main centers of action in the atmospheric circulation of the Northern Hemisphere.
Altitude- Elevation above sea level.
Anemometer- An instrument used to measure wind speed.
Vertical distance of a point on or affixed to the surface of the ground, measured from mean sea level; contrast with altitude (1), which is a vertical distance of a point not necessarily affixed to the ground.
FAHRENHEIT: A temperature scale having the freezing point of pure water at 32° and the boiling point at 212° under standard sea level pressure.
FIRMWARE: Programs or instructions which are stored in read-only memory.
Celsius Scale - A temperature scale (at one time called the centigrade scale) devised by Anders Celsius in 1742 and used where the metric system is in use. For water at sea level, 0° is designated the ice point and 100° the steam point.
Coastal Flooding - Prolonged strong onshore flow of wind and/or high astronomical tides causing a rise in sea level that floods coastal areas.
Mountain meteorology: meteorology of a mountainous or topographically complex area.MSL: above mean sea level.
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Cloud - A visible collection of very fine water droplets or ice crystals suspended in the atmosphere at altitudes from just above the ground to several miles above sea level.
This is one of the most important formulas in meteorology and has been used for generations to standardize barometric pressure readings taken from all kinds of landscape elevations to mean sea level values.
 See also: Pressure, Weather, Surface, Temperature, Water
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