BE PREPARED FOR AN
EXTREME HEAT
Extreme heat often results in the highest annual number of deaths among all weather-related disasters.
In most of the U.S., extreme heat is a long period (2 to 3 days) of high heat and humidity with temperatures above 90 degrees.
Greater risk
Can happen anywhere
Humidity increases the feeling of heat as measured by a heat index.
IF YOU ARE UNDER AN EXTREME HEAT WAVE
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Find air conditioning, if possible.
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Check on family members and neighbors.
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Avoid strenuous activities.
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Drink plenty of fluids.
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Watch for heat illness.
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Watch for heat cramps, heat exhaustion, and heat stroke.
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Wear light clothing.
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Never leave people or pets in a closed car.
Hazard Scope and Impact
Relation to the temperature ranges and relative humidity of the region determines the definition of extreme heat. Typically, a heat wave lasts two or more days.
Death and Injuries Impact
Dehydration; heat-related illnesses including sunburn, heat cramps, heat exhaustion, and heat stroke due to lack of sufficient indoor cooling from air conditioning (A/C) or outdoor over-exposure.
Effective Protective Action Timeframes
Before for community readiness, during for individuals. While knowledge and planning to be able to get to a cool location is important, the critical Protective Action is to be in a location with A/C for effective cooling.