An Excessive Heat Warning is issued by the National Weather Service of the United States within 12 hours of the heat index reaching one of two criteria levels. A warning will be issued if there is a heat index of at least 105°F for more than 3 hours per day for 2 consecutive days, or if the heat index is greater than 115°F for any period of time. 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, Heat exhaustion, and other heat-related illnesses.
Read more about Excessive Heat Warning: Example
Famous quotes containing the words excessive, heat and/or warning:
“There is, indeed a more mitigated scepticism or academical philosophy, which may be both durable and useful, and which may, in part, be the result of this Pyrrhonism, or excessive scepticism, when its undistinguished doubts are corrected by common sense and reflection.”
—David Hume (1711–1776)
“She knows the heat of a luxurious bed.
Her blush is guiltiness, not modesty.”
—William Shakespeare (1564–1616)
“An overturned cart is a warning to oncoming drivers.”
—Chinese proverb.