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Increasingly extreme heat is contributing to more deaths in California. Why getting data is so slow
A man drinks water under a tree in shade during excessive heat at Lincoln Park.
(
Damian Dovarganes
/
AP
)
July’s record-breaking heat is suspected to have contributed to dozens of deaths across California, and likely far more, but it could be months before we know the heat’s true death toll.
The background
July was California’s hottest month in at least 130 years, a sign of how the pollution spewed by human society is rapidly changing our climate and making heat waves more dangerous.
Why it matters
Public health experts say long lags in data on how increasingly extreme heat waves affect health and mortality can hurt timely and effective prevention efforts.
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Why it takes so long
It can take months to assess all the factors that may have contributed to a person’s death before authorities can determine the likely cause in a coroner’s report. Public health departments can also conduct “excess mortality” analyses, which compare the number of total deaths that occurred during a period of extreme heat with the number of deaths that occur under normal conditions.
When will we have the numbers?
The L.A. County Medical Examiner’s Office said it expects to have heat-related death data by October. It can take six to 18 months for the California Department of Public Health to compile data for heat-related deaths statewide.
The most recent data
The state’s last “excess mortality” report was published nearly a year after a record long and hot September heat wave in 2022. In it, they determined at least 395 additional deaths occurred as a result of that heat wave. Research from UCLA has found that between 2009 and 2018, there are on average 1,177 additional emergency room visits on days that are 90 degrees or hotter.
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What’s next
UCLA is expected to publish an update on its heat-related emergency room visit data later this year. The state is working to launch a centralized data system that tracks real-time heat related emergencies.
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But the game has changed: Congress voted to eliminate funding for public media across the country. Here at LAist that means a loss of $1.7 million in our budget every year. We want to assure you that despite growing threats to free press and free speech, LAist will remain a voice you know and trust. Speaking frankly, the amount of reader support we receive will help determine how strong of a newsroom we are going forward to cover the important news in our community.
We’re asking you to stand up for independent reporting that will not be silenced. With more individuals like you supporting this public service, we can continue to provide essential coverage for Southern Californians that you can’t find anywhere else. Become a monthly member today to help sustain this mission.
Thank you for your generous support and belief in the value of independent news.
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