Quick Answer
Wet gear can cause hypothermia even in mild temperatures because it allows moisture to evaporate, cooling the body through the process of evaporative cooling. This can occur at temperatures as high as 50°F (10°C). In these conditions, the risk of hypothermia increases significantly if the individual is wet for an extended period.
Causes of Hypothermia in Wet Conditions
Wet gear can cause hypothermia through evaporative cooling, where the moisture on the skin evaporates, drawing heat away from the body. This process can occur even in mild temperatures. For example, if the air temperature is 50°F (10°C) and the individual is wearing wet clothing, the evaporative cooling effect can cause the body temperature to drop rapidly.
Preventing Hypothermia in Wet Conditions
To prevent hypothermia in wet conditions, it’s essential to remove excess moisture from the skin and clothing. This can be done by changing into dry clothes, using a towel to dry off, or using a handheld hair dryer on a low setting (avoiding direct heat on the skin). If the individual is unable to change into dry clothes, they can use a space blanket or emergency bivvy sack to retain body heat.
Treatment for Hypothermia
If an individual is experiencing hypothermia, it’s crucial to act quickly to restore body heat. Remove any wet clothing and replace it with dry, insulating layers. Use a space blanket or emergency bivvy sack to retain body heat. In severe cases, medical attention may be required. If possible, warm the individual with dry heat (not direct heat) and provide a warm beverage to help restore body temperature.
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