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Several New Jersey counties including Passaic, Hudson, Bergen, Essex, Union and Morris will be under a heat advisory between 11 a.m. and 8 p.m. on Wednesday as heat index values of up to 104 ...
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 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.
A heat advisory remains in effect until 10 p.m. Tuesday, with heat index values expected to reach up to 104 degrees, according to the NWS.
The heat index in parts of Indiana, Ohio and Michigan, as well as New England, could touch triple digits, the NWS said. In New York City, a joint statement from the emergency management and health ...
A heat advisory is a notice issued by the National Weather Service of the United States.Local offices often have their own criteria. High values of the heat index are caused by temperatures being significantly above normal and high humidities, and such high levels can pose a threat to human life through conditions such as heat stroke.
Expect scattered showers and thunderstorms rolling through tonight between 8 p.m. and 4 a.m., according to the National Weather Service. There's a chance of some storms bringing heavy rain.
A heat advisory was in effect through Tuesday night for southeastern Michigan, where forecasters expected actual temperatures to exceed 90 degrees and push the heat index in some areas up to 100.