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The heat index (HI) is an index that combines air temperature and relative humidity, in shaded areas, to posit a human-perceived equivalent temperature, as how hot it would feel if the humidity were some other value in the shade. For example, when the temperature is 32 °C (90 °F) with 70% relative humidity, the heat index is 41 °C (106 °F ...
The heat index is what the actual temperature feels like when it's combined with ... An accompanying map illustrated the spread of the heat wave over a large cluster of midwestern states, with ...
A heat index of 95 degrees, for instance, can be reached in different combinations such as 86 degrees with 70% humidity or 90 degrees at 50% humidity. ... The HeatRisk map for the United States on ...
Minimum temperature map of the United States from 1871–1888 Maximum temperature map of the United States from 1871–1888. The following table lists the highest and lowest temperatures recorded in the 50 U.S. states, the District of Columbia, and the 5 inhabited U.S. territories during the past two centuries, in both Fahrenheit and Celsius. [1]
The Winkler Index, sometimes known as the Winkler Scale or Winkler Regions, is a technique for classifying the climate of wine growing regions based on heat summation or growing degree-days. In the system, geographical areas are divided into five climate regions based on temperature converted to growing degree-days, and is commonly known as ...
The heat index could reach 117 degrees in the Valley, while Corpus Christi can expect a heat index of 111 degrees on Tuesday. Hot and humid again today, with highs in the lower 90s to upper 100s.
Heat index and temperature map for Florida CDC maps heat-related illnesses by state, county. The Heat-Related Illness and Temperature map issued by the Centers for Disease Control shows the rate ...
An excessive heat warning is a notice issued by the National Weather Service of the United States within 12 hours of the heat index reaching one of two criteria levels. In most areas, a warning will be issued if there is a heat index of at least 105 °F (41 °C) for more than three hours per day for two consecutive days, or if the heat index is greater than 115 °F (46 °C) for any period of time.