Heat wave

From Academic Kids

A heat wave is a prolonged period of excessively hot weather, which may be accompanied by excessive humidity. The term is relative to the usual weather in the area, so temperatures that people from a hotter climate find normal can be a heat wave if they are outside the normal pattern for a cooler area. The term is applied both to "ordinary" weather variations and to extraordinary spells of heat which may only occur once a century.

Some regions of the globe are more susceptible to heat waves than others, such Mediterranean-type climates with a summer dry spell which on certain years becomes much hotter than usual.

Severe heat waves can lead to deaths from hyperthermia, especially among elderly people. If accompanied by drought which dries out vegetation, heat waves can lead to wildfires.

To remain safe during heat waves, see Hot Weather Tips (http://chicago.about.com/library/blank/bl_hot_weather_tips.htm)

Major Heat Waves

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