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Heat Wave Safety
Read this page in Spanish - en Espanol
In recent years, excessive heat has caused more deaths than all other weather events, including floods. A heat wave is a prolonged period of excessive heat, generally 10 degrees or more abover the average high temperature for the region during summer months, often combined with excessive humidity.
Know what these terms mean
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Excessive Heat Watch—Conditions are favorable for an excessive heat event to meet or exceed local Excessive Heat Warning criteria in the next 24 to 72 hours.
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Excessive Heat Warning—Heat Index values are forecast to meet or exceed locally defined warning criteria for at least 2 days (daytime highs=105-110° Fahrenheit).
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Heat Advisory—Heat Index values are forecast to meet locally defined advisory criteria for 1 to 2 days (daytime highs=100-105° Fahrenheit).
How can I prepare?
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Listen to local weather forecasts and stay aware of upcoming temperature changes.
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The heat index is the temperature the body feels when the effects of heat and humidity are combined. Exposure to direct sunlight can increase the heat index by as much as 15° F.
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Discuss heat safety precautions with members of your household. Have a plan for wherever you spend time— home, work and school—and prepare for the possibility of power outages.
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Check the contents of your emergency preparedness kit in case a power outage occurs.
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Know those in your neighborhood who are elderly, young, sick or overweight. They are more likely to become victims of excessive heat and may need help.
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If you do not have air conditioning, choose places you could go to for relief from the heat during the warmest part of the day (schools, libraries, theaters, malls).
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Be aware that people living in urban areas may be at greater risk from the effects of a prolonged heat wave than are people living in rural areas.
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Get trained in first aid to learn how to treat heat-related emergencies.
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Ensure that your animals’ needs for water and shade are met.
What should I do during a heat wave?
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Listen to critical updates from the National Weather Service (NWS).
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Never leave children or pets alone in enclosed vehicles.
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Stay hydrated by drinking plenty of fluids even if you do not feel thirsty. Avoid drinks with caffeine or alcohol.
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Eat small meals and eat more often.
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Avoid extreme temperature changes.
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Wear loose-fitting, lightweight, light-colored clothing. Avoid dark colors because they absorb the sun’s rays.
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Slow down, stay indoors and avoid strenuous exercise during the hottest part of the day.
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Postpone outdoor games and activities.
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Use a buddy system when working in excessive heat.
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Take frequent breaks if you must work outdoors.
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Check on family, friends and neighbors who do not have air conditioning, who spend much of their time alone or who are more likely to be affected by the heat.
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Check on your animals frequently to ensure that they are not suffering from the heat.
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