Terms in this set (15)
When a weather event is significantly different from the average or usual weather pattern, and is especially severe or unseasonal.
Moisture falling from the atmosphere - rain, sleet or snow.
A severe tropical storm, characterised by low pressure, heavy rainfall and winds of extreme strength.
Formed as air sinks towards the ground surface. Winds on the ground move outwards from these areas.
Formed as air rises up from the ground surface. Winds on the ground move towards these areas.
A large mass of air with uniform temperature and humidity.
An area of high pressure usually associated with settled weather.
The average weather conditions for a place taken over a period of time.
An area of low pressure in temperate latitudes usually associated with cloud, rain and strong winds.
The temperature at which air becomes saturated and water vapour within it condenses to form water droplets.
A prolonged period of dry weather leading to a water shortage.
The boundary between two air masses which have different temperature and humidity characteristics.
A rapid rise in sea-level caused by storms, especially tropical cyclones, forcing water into a narrowing sea area.
An extended period of hot weather relative to the expected conditions of the area at that time of year.
The effect of the Earth's rotation. The direction of winds are deflected to the right in the northern and to the left in the southern hemisphere.
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