Excessive Heat Warning

Excessive Heat Warning : Stay Cool and Safe

What is an Excessive Heat Warning?

An Excessive Heat Warning is issued by the National Weather Service (NWS) when the heat index value is expected to reach or exceed 105 degrees Fahrenheit (40.6 degrees Celsius) within the next 12 to 24 hours. The heat index is a measure of how hot it feels when relative humidity is combined with the air temperature.

Who is Most at Risk?

Extreme heat can be dangerous for everyone, but some people are more at risk than others. These include:

• Older adults (65 years and older)
• Children under the age of 2
• People with chronic health conditions, such as heart disease, diabetes, or obesity
• People who work or exercise outdoors

How to Stay Safe During an Excessive Heat Warning

There are a number of things you can do to stay safe during an Excessive Heat Warning, including:

• Stay indoors in air-conditioned areas. If you don't have air conditioning, spend time in public places that are air-conditioned, such as libraries, shopping malls, or community centers.
• Drink plenty of fluids, even if you don't feel thirsty. Avoid sugary drinks and alcohol, which can dehydrate you.
• Wear loose-fitting, light-colored clothing. Dark-colored clothing absorbs more heat than light-colored clothing.
• Take cool showers or baths. This can help lower your body temperature.
• Avoid strenuous activity during the hottest hours of the day. If you must go outside, take breaks in the shade and drink plenty of fluids.
• Check on elderly neighbors and relatives. Make sure they are staying cool and hydrated.

What to do if you Experience Heat-Related Illness

If you experience any of the following symptoms of heat-related illness, seek medical help immediately:

• Heat cramps: Muscle cramps, usually in the legs or abdomen
• Heat exhaustion: Headache, nausea, vomiting, dizziness, weakness
• Heatstroke: High body temperature (103 degrees Fahrenheit or higher), confusion, seizures, loss of consciousness

Additional Resources

For more information on excessive heat warnings and how to stay safe, visit the NWS website:
https://www.weather.gov/safety/heat