It’s summer, which means the sun is out and temperatures are warming to the highest points of the year. For the Pacific Northwest this weekend, temperatures may reach record-breaking points. The region is expected to experience a historic heat wave that brings temperatures well over 100 degrees in some areas.
Is heat the leading weather-related killer in the U.S.?
Yes, historically, heat has led to the most weather-related deaths in the U.S.
WHAT WE FOUND
The CDC tracks heat-related deaths in the United States and says around 618 people are killed by extreme heat annually. It defines extreme heat as: “Summertime temperatures that are much hotter and/or humid than average. Because some places are hotter than others, this depends on what’s considered average for a particular location at that time of year.”
The number of heat-related deaths was even higher for a 15-year span from 2004-2018, according to a CDC morbidity and mortality report. During that time, there was an average of 702 heat-related deaths in the U.S. every year. In 59% of those deaths, heat was identified as the underlying cause of death and in 41% of those deaths, heat was identified as a contributing cause of death.
The CDC says floods are the second-deadliest weather-related hazard in the U.S., accounting for about 98 deaths per year. Most of those deaths are due to drowning.
Ready, the Federal Emergency Management Agency’s (FEMA) national public service campaign, says, “extreme heat is responsible for the highest number of annual deaths among all weather-related hazards.”
The National Weather Service (NWS) also tracks weather-related fatalities, although the agency notes the CDC is the official government source for weather-related causes of death. According to NWS data, heat has been the leading cause of death among weather-related fatalities over the past 30 years.
Over the last 10 years, heat, floods, and tornadoes have been the top weather-related killers in the U.S., according to NWS. In 2020, tornadoes led to the most weather-related deaths, NWS data shows.
The CDC expects more extreme heat events in the coming years due to climate change.
“Extreme heat events in the United States are already occurring and expected to become more common, more severe, and longer-lasting as our climate changes,” the agency says.
People most at risk to suffer a heat-related illness or death are older adults, young children, people with mental illness, and people with chronic diseases, according to the CDC. Although less likely, young and healthy people can still be affected.
The federal agency urges people to be aware of warning signs of heat stroke and heat exhaustion, such as a high body temperature, dizziness, and nausea.
To stay cool, people should drink cold beverages, rest, take a cold shower or bath, seek a place with air conditioning, and wear lightweight clothing.
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