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For the Excessive Heat Warning Saturday, dangerously hot conditions with heat index values of 110 to 112 degrees. For the Heat Advisory Sunday, heat index values up to 109 expected for North and ...
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.
Dangerously hot conditions with heat index values up to 111 degrees anticipated for portions of north and northeast Texas until 9 p.m. Saturday. ... The Today Show. 50 Valentine's Day dinner ideas ...
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 more urban areas like Hagerstown and in Martinsburg and Berkeley Springs in West Virginia the heat index is expected to be on the higher end, around 105 to 106 degrees. In Franklin and Fulton ...
A generalized view of the heat index showing how the perception of heat by the human body increases with temperature but more rapidly at higher humidity levels. The heat index of a given combination of temperature and humidity is defined as the dry-bulb temperature which would feel the same if the water vapor pressure were 1.6 kPa. Quoting ...
An updated excessive heat warning was issued by the NWS Fort Worth TX on Tuesday at 2:06 p.m. Dangerously hot conditions with heat index values up to 110 degrees anticipated for Johnson and Parker ...
Apparent temperature, also known as "feels like", [1] [2] is the temperature equivalent perceived by humans, caused by the combined effects of air temperature, relative humidity and wind speed.