At a heat index of over 90 degrees F, what is a possible health concern for firefighters?

A heat index over 90 degrees Fahrenheit indicates that the combination of temperature and humidity can create an environment conducive to heat-related illnesses. In this scenario, for firefighters who operate in such conditions, heat cramps and heat exhaustion are strong concerns when exposure to high temperatures is prolonged.

Heat cramps are painful spasms that occur in the muscles due to an imbalance of fluids and electrolytes, often exacerbated by intense physical activity in hot weather. Heat exhaustion, on the other hand, can develop when the body loses a significant amount of water and salt, leading to symptoms such as heavy sweating, weakness, dizziness, and possibly fainting.

While heat stroke becomes a severe concern when temperatures rise significantly and symptoms continue to progress, it is not as immediate a risk as heat cramps or heat exhaustion, which are more common in situations where firefighters are active for extended periods under high heat and humidity. Thus, understanding the symptoms and risks of heat cramps and heat exhaustion at this heat index is crucial for maintaining safety and health in such conditions.