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What is heat stroke?

Heat stroke is a serious medical emergency in which the body's cooling systems stop working and the core temperature can rise to dangerous levels.

Heat stroke occurs when the body is exposed to an excessive amount of heat and becomes unable dissipate the heat through sweating.

When heat stroke happens, the body’s temperature rises rapidly, the body loses its ability to sweat, and it is unable to cool down.

Body temperature can rise to 106°F or higher within 10 to 15 minutes, and at 106°F brain death begins.

If emergency treatment is not provided, heat stroke can cause death or permanent disability in humans and animals

Symptoms of heat stroke include hot, dry skin, lack of sweating, a very fast pulse, confusion and perhaps seizures or coma. If untreated, heat stroke can be fatal.

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Historical Averages

High Low
Current 46°F 19°F
Average 41°F 25°F
Record 63°F December 12, 1931 2°F December 12, 1988