Definition of heat wave Heat wave

We found 5 definitions of heat wave from 4 different sources.

What does heat wave mean?

Noun
heat wave - a wave of unusually hot weather

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heat wave (Noun)
A period of exceptionally hot weather.
heat wave (Noun)
Three consecutive days with daytime high temperature of 90 degrees Fahrenheit or higher.

A heat wave is a long period of extremely hot weather, which may be followed by high humidity. There is no definition of a heat wave that everyone agrees on; the term depends on the usual weather in the area. Temperatures that people from a hotter climate consider normal can be called a heat wave in a cooler area if they are outside the normal climate pattern for that area. The term is used on both common weather changes and to very hot spells which may occur only once a century.

heat wave in sign language