Under high pressure, the air subsides (sinks) toward the surface, warming and drying adiabatically, inhibiting convection and preventing the formation of clouds. heat wave meaning: a period of days during which the weather is much hotter than usual. Typically a heat wave lasts two or more days. Heating Degree Days (abbrev. Definition of heat wave written for English Language Learners from the Merriam-Webster Learner's Dictionary with audio pronunciations, usage examples, and count/noncount noun labels.  High end farmlands have irrigation systems to back up crops with. Heat waves and a late rain season resulted in significant leaf scorching of tea leaves in Malawi, leading to reduced yields. heat wave definition: a period of days during which the weather is much hotter than usual. According to another prior heat wave definition (i.e., Perkins & Alexander, 2012) this would constitute two 3‐day‐long heat waves. cold wave; Translations . Although the definition of heat implicitly means the transfer of energy, the term heat transfer encompasses this traditional usage in many engineering disciplines and laymen language. Prevention is the best therapy. In 1900, A. T. Burrows more rigidly defined a "hot wave" as a spell of three or more days on each of which the maximum shade temperature reaches or exceeds 90°F. Heat waves can and do cause roads and highways to buckle and melt, water lines to burst, and power transformers to detonate, causing fires. If this advice is not followed it may then lead to heat stroke. Typically a heat wave lasts two or more days. Heat wave definition is - a period of unusually hot weather. Heat syncope is related to heat exposure that produces orthostatic hypotension. Definition of heatwave noun in Oxford Advanced Learner's Dictionary. [ 6 ] A futuristic version of Heat Wave, calling himself Heatstroke, appears as part of the 25th Century cops known as The Renegades . A Relative Term However, there exist no universal definitions for a heat wave as it is relative to a specific area and to a certain time of year. Daily Temperature and Income in the United States", "Heat Eases, but Thousands of Southern Californians Still Lack Power", "Heat and drought extremes likely to stress ecosystem productivity equally or more in a warmer, CO 2 rich future", "Extreme Heat Resilience Alliance: Reducing Extreme Heat Risk for Vulnerable People", "The world's getting hotter. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. A definition based on Frich et al. Which word describes a musical performance marked by the absence of instrumental accompaniment. See the 2006 North American heat wave article about heat waves causing physical damage. Heat transfer is generally described as including the mechanisms of heat conduction , heat convection , thermal radiation , but may include mass transfer and heat in processes of phase changes . It may even resemble heat stroke, with the difference being that the neurologic function remains intact. In parts of the world where summer conditions often exceed the physiologic threshold—the point at which adequate removal of heat from the body is impeded—behavior… NWS definition of heat wave. Sun kinking can be a serious problem in hotter climates like Southern USA, parts of Canada, the Middle East, etc. heat wave A period of time in which the weather is unusually and persistently hot. Heat wave definition, an air mass of high temperature covering an extended area and moving relatively slowly. 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.. Heat cramps are painful, often severe, involuntary spasms of the large muscle groups used in strenuous exercise.  The average annual number of fatalities directly attributed to heat in the United States is about 400. Heat exhaustion is considered by experts to be the forerunner of heat stroke (hyperthermia). Like this video? People who experience heat syncope should avoid standing in the heat for long periods of time. 2016). Typically a heat wave lasts two or more days. Meaning of heat wave.  High temperatures are associated with increased conflict both at the interpersonal level and at the societal level. The many sport drinks on the market are a good source of electrolytes and are readily accessible. Level 3 is triggered when the temperature has been above the threshold for the preceding day and night, and there is a 90% or higher chance that it will stay above the threshold in the following day. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. The World Meteorological Organization is specific in its definition by stating that a heat wave is when the daily maximum temperature for more than five consecutive days exceeds the average maximum temperature by 9 degrees. Rehydration with salt-containing fluids provides rapid relief. 'Nip it in the butt' or 'Nip it in the bud'? The National Weather Service issues heat advisories and excessive heat warnings when unusual periods of hot weather are expected. Symptoms may include diarrhea, headache, nausea and vomiting, dizziness, tachycardia, malaise, and myalgia. What is the definition for a UK heatwave? June 2019 was the hottest month on record worldwide, the effects of this were especially prominent in Europe. See more. ", According to the Agency for Health care Research and Quality, about 6,200 Americans are hospitalized each summer due to excessive heat, and those at highest risk are poor, uninsured or elderly. The World Meteorological Organization (WMO) defines a heat wave as five or more consecutive days in which the average daily maximum temperature is exceeded by at least 5°C, the normal period being 1961-1990. In every society, crime rates go up when temperatures go up, particularly violent crimes such as assault, murder, and rape. A heat wave is a prolonged period of extremely high temperatures for a particular region. Heat rash, also known as prickly heat, is a maculopapular rash accompanied by acute inflammation and blocked sweat ducts. It is also advised to wear loose-fitting clothing in the heat. What made you want to look up heat wave? How to use cold wave in a sentence. A heat wave is a period of abnormally and uncomfortably hot and usually humid weather. A marine heatwave is defined a when seawater temperatures exceed a seasonally-varying threshold (usually the 90th percentile) for at least 5 consecutive days. All Free. In Denmark, a national heat wave (hedebølge) is defined as a period of at least 3 consecutive days of which period the average maximum temperature across more than fifty percent of the country exceeds 28 °C (82.4 °F) – the Danish Meteorological Institute further defines a "warmth wave" (varmebølge) when the same criteria are met for a 25 °C (77.0 °F) temperature, while in Sweden, a heat wave is defined as at least 5 days in a row with a daily high exceeding 25 °C (77.0 °F).. Cherchez heat wave et beaucoup d’autres mots dans le dictionnaire de définitions en anglais de Reverso. , Prolonged period of excessively hot weather, The examples and perspective in this section, Learn how and when to remove this template message, "More Intense, More Frequent, and Longer Lasting Heat Waves in the 21st Century", 10.1175/1520-0450(2001)040<0762:OTDOAH>2.0.CO;2, "Observed coherent changes in climatic extremes during the second half of the twentieth century", "Värmebölja | Klimat | Kunskapsbanken | SMHI", "Glossary - NOAA's National Weather Service", "Half the country wilts under unrelenting heat", "Extreme Heat Services for South Australia", "Top ten European heatwaves since 1950 and their occurrence in the coming decades", "Has global warming brought an early summer to the US? Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.  Model results show that areas associated with the severe heat waves in Chicago in 1995 and Paris in 2003 will experience more intense, more frequent, and longer-lasting heat waves in the second half of the 21st century.  Rory is still on the run with The Rogues. A heat wave is usually defined as a period of 3 or more consecutive days with temperatures of 32° C or higher.  Rory is still on the run with The Rogues. They usually develop in people performing heavy exercise while sweating profusely and replenishing fluid loss with non-electrolyte containing water. This definition of a heat wave is also used in Belgium and Luxembourg. Find more ways to say heat wave, along with related words, antonyms and example phrases at Thesaurus.com, the world's most trusted free thesaurus. 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