Who is Heatwave?
A heat wave (or heatwave), sometimes described as extreme heat, is a period of abnormally hot weather.: 2911 High humidity often accompanies heat waves. This is especially the case in oceanic climate countries. Definitions vary but are similar. A heat wave is usually measured relative to the usual climate in the area and to normal temperatures for the season.: 2911 Temperatures that humans from a hotter climate consider normal, can be regarded as a heat wave in a cooler area. This would be the case if the warm temperatures are outside the normal climate pattern for that area. Heat waves have become more frequent, and more intense over land, across almost every area on Earth since the 1950s. This is due to climate change.Heat waves form when a high-pressure area in the upper atmosphere strengthens and remains over a region for several days up to several weeks. This traps heat near the earth's surface. It is usually possible to detect heat waves by using forecasting instruments...
