A new safety graphic from federal agencies highlights the critical differences between heat exhaustion and heat stroke, emphasizing that quick action can save lives. According to the guidance, heat exhaustion often begins with symptoms such as dizziness, intense thirst, heavy sweating, nausea, and general weakness. AdvertisementThe warning becomes more severe with heat stroke, a life‑threatening emergency marked by confusion, loss of consciousness, or severe dizziness. Federal agencies note that untreated heat exhaustion can progress to heat stroke, which can cause permanent disability or death. With temperatures expected to remain high, residents are encouraged to stay cool, stay hydrated, and stay informed.