Tropical waves (also called easterly waves) are areas of thunderstorms and cloudiness that originate in the intertropical convergence zone (ITCZ), a belt of low pressure girdling Earth at the equator.
Tropical wave: A kink or bend in the normally straight flow of surface air in the tropics which forms a low pressure trough, or pressure boundary, and showers and thunderstorms. Can develop into a tropical cyclone. ...
TROPICAL WAVE Another name for an easterly wave, it is an area of relatively low pressure moving westward through the trade wind easterlies.
Tropical Wave
A trough or cyclonic curvature maximum in the trade wind easterlies and it is not classified as a tropical cyclone. The wave may reach maximum amplitude in the lower middle troposphere.
Tropical Weather Discussion ...
Tropical Wave
A trough or cyclonic curvature maximum in the trade-wind easterlies. The wave may reach maximum amplitude in the lower middle troposphere.
Trough
(Thalwet) An elongated area of relatively low atmospheric pressure.
TROPICAL WAVE - A wave, trough, or windshift line moving through the trade winds. The forcing effect of the wave often causes showers and thunderstorms to develop along the wave axis.
The cloudiness and showers may or may not be associated with a tropical wave, but the system is non-frontal in nature. It is often the first developmental stage of any subsequent tropical depression, tropical storm, or hurricane.
TROPICAL DEPRESSION: A tropical cyclone in which the maximum 1-minute sustained surface wind is 38 mph or less. They form from a tropical wave or tropical disturbance.
Normally, it moves slower than the atmospheric current in which it is embedded and is considered a weak trough of low pressure. It is often associated with possible tropical cyclone development and is also known as a tropical wave.
In the tropics, troughs (particularly over the ocean) are often driven by troughs or disturbances in the upper levels that causes convergence in the lower levels. These are also known are tropical waves and are often a precursor tropical cyclone ...
 See also: Tropical cyclone, Storm, Cyclone, Pressure, Air
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