high pressure center
Terms for using data resources. CD-ROM available.
Credits and Acknowledgments for WW2010.
Department of Atmospheric Sciences (DAS) at
the University of Illinois at Urbana-Champaign.
Southern Oscillation A large-scale atmospheric and hydrospheric fluctuation centered in the equatorial Pacific Ocean. It exhibits a nearly annual pressure anomaly, alternatively high over the Indian Ocean and high over the South Pacific.
Aleutian low - The low pressure center located near the Aleutian Islands on mean charts of sea level pressure. It represents one of the main centers of action in the atmospheric circulation of the Northern Hemisphere.
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cyclone- a rotating mass of air with minimum pressure in its center. In the Northern Hemisphere, such winds move counterclockwise, and in the Southern Hemisphere, clockwise.
Deepening: In synoptic meteorology, it means to reduce the pressure in the center of a cyclone in time.
Dew: Water droplets condensed over the grass or any other surface next to the soil.
center of action"1. Any one of the semi-permanent highs and lows that appear on mean charts of sea level pressure. As originally used by L. Teissenenc de Bort in 1881, this term was applied to maxima and minima of pressure on daily charts.
Center/Vortex Fix
The location of the center of a tropical or subtropical cyclone obtained by reconnaissance aircraft penetration, satellite, radar, or synoptic data.
Center
Generally speaking, the vertical axis of a tropical cyclone, usually defined by the location of minimum wind or minimum pressure. The cyclone center position can vary with altitude.
NASA Centers The ten major NASA Centers are: (1) Ames Research Center (ARC) Located at Moffett Field, California. ARC is active in aeronautical research, life sciences, space science, and technology research.
[edit] Centers of research
In the UK, atmospheric studies are underpinned by the Met Office, the Natural Environment Research Council and the Science and Technology Facilities Council. Divisions of the U.S.
CENTER OF GRAVITY (CG) - The point where the total mass of the pilot and aircraft balances.
CENTER OF LIFT - The aerodynamic point where the force of lift is focused along the wing's chord line.
Center for Analysis and Prediction of Storms
NOAA National Weather Service - Cite This Source - This Definition ...
Centers that serve groups of Weather Service Forecast offices and Weather Forecast offices, in providing hydrologic guidance and is the first echelon office for the preparation of river and flood forecasts and warnings.
River Gage ...
A center, or maximum, in the vorticity field of a fluid; sometimes shortened to vort max.
Weather Glossary Search Page
Weather Glossary Source List ...
The Center, which produces numerous climate publications and responds to requests from all over the world, provides historical perspectives on climate which are vital to studies on global climate change, the greenhouse effect, ...
The Center trains forecasters in the latest meteorological theories, develops and improves forecast techniques and evaluates data source and technology.
The center of a tropical storm or hurricane, characterized by a roughly circular area of light winds and rain-free skies. An eye will usually develop when the maximum sustained wind speeds exceed 78 mph.
News Center, National Forecast, Storm Watch, Hurricane Central, TWC Blog, Storm Stories, Road Crew
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EYE - The center of an intense storm system, usually applied to severe tropical cyclones such as hurricanes, characterized by light winds, no rain, and a break on the clouds. Sinking air in the storm center causes a hurricane eye.
NATIONAL CENTERS FOR ENVIRONMENTAL PREDICTION (NCEP)
As part of the National Weather Service, the centers provide timely, accurate, and continually improving worldwide forecast guidance products.
UTAH Climate Center
Easy to read site with lots of information about weather in Utah and weather and climate in general. Contains links to various other sites concerning weather and meteorology.
LOW: The center of an area of low pressure, usually accompanied by cyclonic and inward wind flow. Also known as a cyclone.
MARITIME AIR MASS: Moist air mass originating over the ocean.
LOW- The center of an area of low pressure, accompanied by cyclonic and inward wind flow in the northern hemisphere. Also known as a cyclone.
M ...
5. Eye - The center of the hurricane where winds are light and skies are clear to partly cloudy. The eye is rimmed by massive thunderstorms producing torrential rains and extreme winds.
6. Eye wall - A wall of thunderstorms around the eye.
ECMWF (European Center for Medium-Range Weather Forecasts) - Operational references in forecast discussions typically refer to the ECMWF's medium-range numerical forecast model, which runs out to 10 days.
Cyclone-A swirling center of low air pressure.
Density-The amount of mass of a substance to a given volume.
Dew point- The temperature at which condensation begins.
National Hurricane Center - They issue watches, warnings, forecasts, and analyses of hazardous tropical weather.
National Weather Service - The federal agency that provides weather, hydrologic, and climate forecasts and warnings for the United States.
Multivortex tornadoA tornado in which two or more condensation funnels or debris clouds are present at the same time, often rotating about a common center or about each other. Multiple-vortex tornadoes can be especially damaging.
SAFFIR-SIMPSON SCALE DAMAGE-POTENTIAL SCALE Developed in the early 1970s by Herbert Saffir, a consulting engineer, and Robert Simpson, then Director of the National Hurricane Center, it is a measure of hurricane intensity on a scale of 1 to 5.
Radius of Maximum WindsThe distance from the center of a tropical cyclone to the location of the cyclone's maximum winds. In well-developed hurricanes, the radius of maximum winds is generally found at the inner edge of the eyewall.
nuclear accident, toxic chemical spill, etcCenterGenerally speaking, the vertical axis of a tropical cyclone, usually defined by the location of minimum wind or minimum pressure. The cyclone center position can vary with altitude.
A Tornado Watch is issued by the Storm Prediction Center (SPC) in Norman, Oklahoma.
that collect, store, and forward data hourly via satellite to a computer system located at the National Interagency Fire Center in Boise, Idaho. RDF Radio Direction Finder.
Convective outlook issued by the Storm Prediction Center. Abbreviation for Anticipated Convection; the term originates from the header coding [ACUS1] of the transmitted product.
centrifugal forceA force directed outward, away from the center of a rotating object; equal in magnitude to the centripetal force but in the opposite direction.
EDC - EROS Data Center
EM - ElectroMagnetic
ENSO - El Niño/Southern Oscillation
EOS - Earth Observing System
EOSDIS - Earth Observing System Data and Information System
EPA - Environmental Protection Agency (U.S.) ...
For example, if an airplane is flying in a perfect circle around a radar site at the center, ...
ECMWF - European Center for Medium-Range Weather Forecasting. Operational references in forecast discussions typically refer to the ECMWF's medium-range forecast model. See MRF, UKMET.
Coriolis Effect - In synoptic scale weather systems (hurricanes and large mid-latitude storms), the Coriolis force causes the air to rotate around a low pressure center in a cyclonic direction.
The amount of dispersion is usually described statistically by the standard deviation (σx, σy and σz) of pollutant particle locations (x, y, z) from the pollutant puff center-of-mass for isolated short releases such as ...
The center post of of a sundial is called a gnomon, because it casts a shadow to show what time it is. Thus gnomonists are people in the know who tell time and direction by reading the size and shapes of shadows.
Cyclone movement The spatial displacement of a center of low pressure caused by the local redistribution of mass in the atmosphere. The trajectory of the center is often altered by heating or cooling on the air column.
Scientists at NASA's Goddard Space Flight Center recently used a computer model and satellite data to examine climate over the past century.
Closed Low - A low pressure area with a distinct center of cyclonic circulation which can be completely encircled by one or more isobars or height contour lines.
SPC - Storm Prediction Center. A national forecast center in Norman, Oklahoma, which is part of NCEP.
DOUBLE-BARRELLED LOW PRESSURE SYSTEM- Ideally a low pressure system will have one distinct center where the surface pressure and height aloft are lowest at one point.
Beam Width - the angle between the center of the radar beam and the point in the beam where the power of the transmitted energy is one-half of the power at the center's maximum. A WSR-88D radar's beam width is approximately 1 degree.
When it is displaced westward, during the Northern Hemispheric summer and fall, the center is located in the western North Atlantic, near Bermuda.
Halo: any of a variety of bright circles or arcs centered on the sun or moon, ...
Forms outside the tropics.
Center of storm is colder than the surrounding air.
Has fronts.
Strongest winds in the upper atmosphere.
A USA TODAY online weather graphic and text gives more details on these big weather makers. ...
corona—A prismatically colored circle or arcs of a circle with the sun or moon at its center; coloration is from blue inside to red outside (opposite that of a halo); ...
Aleutian Low - A large cell of low' pressure centered over the Aleutian Islands of the North Pacific during the winter.
Altimeter - An aneroid barometer calibrated to indicate altitude instead of pressure.
RFC - River Forecast Center. The Northeast River Forecast Center is located in Taunton, MA..
Ridge - An elongated area of high pressure in the atmosphere. Opposite of a trough.
NCDC: National Climatic Data Center. The archive center for climate, observational and forecast data from the National Weather Service (NWS).
A person appointed by a County Emergency Operations Center to be responsible for the formulating and coordinating of the dissemination of emergency public information with both the electronic and written media, ...
Emergency Operations Center (EOC)
The county facility that serves as a central location for the coordinaton and control of all emergency preparedness and response.
Eye- The roughly circular area of relatively calm weather at the center of a hurricane.
Fahrenheit Temperature Scale- A temperature scale that uses 32 degrees as the melting point of ice and 212 degrees as the boiling point of water.
National Hurricane Center (NHC) Agency, located in south Florida, that is responsible for forecasting tropical storms and hurricanes along the East and Gulf coasts and the eastern Pacific Ocean.
 See also: High, Radiation, Air, Weather, Surface
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