Western US Heat Wave Was 800 Times More Likely Due to Climate Change, Scientists Find
Scientists analyzing the recent western United States heat wave say its length and intensity made it an outlier, with the World Weather Attribution group finding the event 800 times more likely because of climate change.
Key Points
- World Weather Attribution group found the heat wave was 800 times more likely due to climate change
- Western heat waves have increased in intensity by more than 7 degrees Fahrenheit because of global warming
- The earliest portion of the March heat wave was statistically 'virtually impossible' without climate change
- Scientists believe climate change may be altering atmospheric circulation patterns like the jet stream
Full Details
The western United States experienced a heat wave so extreme that scientists say it would have been 'virtually impossible' without climate change. The World Weather Attribution group, a consortium of scientists that quantifies how much climate change influenced particular weather events, published a report on March 20 finding that heat waves in the West have increased in intensity by more than 7 degrees Fahrenheit because of global warming. Jennifer Brady, a senior data analyst at Climate Central, noted the heat wave's widespread footprint and duration made it an outlier even compared to current climate change expectations. Some scientists believe climate change is causing broad-scale changes to atmospheric circulation patterns that create heat domes, including alterations to the jet stream. This event adds to a growing body of evidence linking extreme heat events to human-caused global warming.
Why It Matters
This finding underscores the accelerating risk of extreme heat events in the western United States, suggesting that what was once considered abnormal is becoming the new baseline. Communities will need to adapt infrastructure, healthcare systems, and emergency response protocols to handle more frequent and intense heat waves.
Get stories like this delivered daily
AI-curated news, personalized to your interests. Zero noise.
Start 7-Day Free Trial →More in Global News
One Month Into Iran War: Global Economy Faces Major Disruptions
One month after the US and Israeli war on Iran began, the global economy is experiencing the largest supply disruption in oil market history, with cascading effects on inflation, air travel, food prices, and even semiconductor chip production.
AI Targeting Systems in Iran Conflict Raise 'Cold War' Concerns
Reports confirm Palantir's AI targeting systems used in Ukraine are now being integrated into Iranian drone operations, sparking concerns about an emerging AI arms race and ethical questions about autonomous warfare.
G7 Policymakers Hold Crisis Talks as Iran-Russia War Roils Global Economy
Top western G7 policymakers convened emergency discussions to address the economic turmoil caused by the ongoing Iran-Russia war, as the conflict continues to strain global supply chains and markets.
WTO E-Commerce Duties Moratorium Expires as Global Trade Talks Stall
The global moratorium on customs duties for digital downloads and streaming has expired after WTO ministers in Yaoundé, Cameroon failed to reach an extension agreement, with talks now moving to Geneva.