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This is not the same as the astronomical equator because Earth reaches perihelion (the minimum distance from the Sun in its orbit) in early January and is at aphelion (maximum distance) in early July. Therefore, insolation is somewhat higher at 0° latitude in January than in July even though the height of the Sun (at noon) and the length of ...
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 ...
Highest heat index: In the observation above at Dhahran, Saudi Arabia, the heat index ("feels like" temperature) was 81.1 °C (178.0 °F). [ 200 ] Highest temperature with 100% relative humidity : A temperature of 34 °C (93 °F) with 100% relative humidity in Jask , Iran , on 21 July 2012.
Get the latest information on the current heat advisory with our updates. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. Sign in ...
Global warming affects all parts of Earth's climate system. [19] Global surface temperatures have risen by 1.1 °C (2.0 °F). Scientists say they will rise further in the future. [20] [21] The changes in climate are not uniform across the Earth. In particular, most land areas have warmed faster than most ocean areas.
The National Weather Service Tallahassee warned "dangerously hot conditions with heat index values up to 115 expected" today. The warning remains in effect until 7 p.m. CDT or 8 p.m. EDT Thursday ...
In Florida, except for Miami-Dade County, the National Weather Services offices around the state would issue a heat advisory if the heat index is expected to reach 108 to 112 degrees.
Data in the table above is given for water–steam equilibria at various temperatures over the entire temperature range at which liquid water can exist. Pressure of the equilibrium is given in the second column in kPa. The third column is the heat content of each gram of the liquid phase relative to water at 0 °C.