The prolonged heat poses a 'Major Heat Risk,' according to the NWS, affecting anyone without adequate cooling or hydration. Vulnerable groups, including the elderly, young children, and those with pre-existing health conditions, are at heightened risk. Health officials warn of heat-related illnesses such as heat cramps, heat exhaustion, and heat stroke, which can lead to severe health complications or even death if untreated. Additionally, the heat may strain health systems, infrastructure, and industries. Residents are also cautioned about the dangers of cold-water shock in rivers and lakes, as snowmelt-fed waterways remain dangerously cold despite high air temperatures.