Do you know what a heat advisory means?

In regions of low humidity, the most common human response to extreme heat is dehydration. Exposed to direct sunlight and temperatures in excess of 90 degrees, a human can lose as much as half a gallon of water every ten minutes, and this dehydration can seriously interfere with one's internal thermostat.

Heat Index Chart

Heat Index Chart

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1. Do you know what a heat advisory means?
2. How will you be warned?