A Heat Advisory 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 but less than 115°F for less than 3 hours per day or if nighttime low temperatures are above 80°F for 2 consecutive days. 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.
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Famous quotes containing the words heat and/or advisory:
“I have a blood bolt
and I have made it mine.
With this man I take in hand
his destiny and with this gun
I take in hand the newspapers and
with my heat I will take him.”
—Anne Sexton (1928–1974)
“At the heart of the educational process lies the child. No advances in policy, no acquisition of new equipment have their desired effect unless they are in harmony with the child, unless they are fundamentally acceptable to him.”
—Central Advisory Council for Education. Children and Their Primary Schools (Plowden Report)