Make your own free website on
Meteorological Terms
Current Forecast
Seven Day Forecast
Map Room
Storm Alerts
Tropical Storm Report
Moon Outlook
Temperature Converter
Meteorological Terms
Contact Us
Related Sites
Global Support Links
Recycle Earth

Horizontal Divider 1

Absolute Zero- The temperature at which movement of molecules completely stops (-273C/-459F/0K)


Air MassA large body of air where the temperature and humidity are at distinct levels.


Air PressureAn measurement of force pushed down on the earth by air.


Anemometer- An instrument used to measure the speed of wind.


Atmosphere- The blanket of air that surrounds the earth. There are three main layers: the Troposphere, the Ionosphere and the Stratosphere.


BarometerAn instrument that measures the pressure in the air.


Climate- The weather for a specific area over a period of time.


Clouds- Large formations of water droplets, ice crystals and dust held together.


Cold Front- The boundary created when a cold air mass collides with a warm air mass.


Condensation- The process in which water vapor cools down and converts back into a liquid. Sometimes the water vapor freezes and creates tiny ice crystals that collide with one another over and over again, which produces snow.


Convection- The process in which warm air rises and cool air sinks.


Dew Point- The temperature at which condensation takes place.


Downdraft- The downward movement of cold air.


Evaporation- The process in which liquid water converts into water vapor. 


Front- The boundary between two air masses.


Funnel Cloud- A spinning funnel or cone-shaped cloud that slowly drops out of the sky, sometimes forming a tornado.


High-pressure System- A large air mass that spins counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere. This pressure system brings good weather.


Humidity- The amount of water vapor in the air.


Hurricane- A destructive tropical storm which brings extremely high winds.


Hygrometer-  An instrument that measures the humidity in the air.


Jet Stream- Fast-moving trails of air high in the atmosphere.


Low-pressure System- A large air mass that spins counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere. This pressure system brings precipitation.


Occluded Front- A composite front when colder air surrounds a mass of warm air and forces it aloft.


Ozone Layer- A form of oxygen, in the atmosphere, that filters out ultra violet rays that are produced by the sun.


Precipitation- Any form of water falling from the sky such as rain, snow, hail or freezing rain.


Radar- An instrument that sends out radio waves that bounce off ice crystals and water droplets.


Rain Gauge- An instrument that measures the amount of rainfall in an area.


Relative Humitity- The percentage of water vapor that the air can hold at any given time.


Satellite- An instrument that orbits the earth and receives data on the measurements of the upper atmosphere.


Stationary Front- The boundary in which a cold air mass and a warm air mass move along side by side.


Temperature- The measurement of the average kinetic energy of molecules in the air.


Thermometer- An instrument that measures the temperature of the air, usually in Celsius (C) or Fahrenheit (F).


Tornado- A funnel shaped cloud that touches the ground and creates massive destrucion.


Tropical Storm- A storm that forms over warm water and spins at high speeds.


Updraft- The upward movement of warm air.


Warm Front- The boundary created when a warm air mass collides with a cold air mass.


Water Vapor- Water in its gas form.


Wind- The horizontal movement of air across the surface of the earth.