Glossary |
Select a letter from the index given below,
to be shown those glossary items which begin with the same letter.
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H |
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Hail |
Precipitation (falling) of particles of ice (hailstones). Usually spheroid,
conical or irregular in form and with a diameter varying generally between
5 and 50 millimetres.
Hail falls from clouds either separately or collected into irregular lumps. |
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Heat wave |
A period of abnormally hot weather lasting several days. |
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High pressure |
Atmospheric circulations that rotate anti-clockwise in the Southern Hemisphere.
Anticyclones are areas of higher pressure and are generally associated with lighter
winds and fine and settled conditions. |
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Humidity |
A measure of water vapour in the air. See the
Humidity calculator
to calculate relative humidity and for more detailed information. |
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Hurricane Force Wind Warning |
A Hurricane Force Wind Warning is a statement which warns of winds averaging 64 knots or more in coastal waters and high seas areas. |
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Hydrology |
An earth science concerned with the occurrence, distribution and circulation of waters
on and under the earth's surface, both in time and space, their biological,
chemical and physical properties, their reaction with the environment,
including their relation to living beings. |
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Hydrometeorology |
The study of the atmospheric processes that affect the water resources of the
earth, including the study of the atmospheric and land phases of the
hydrological cycle with emphasis on the interrelationships involved. |
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