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Hottest March temperature in US history recorded in Arizona
Hottest March temperature in US history recorded in Arizona
18 minutes ago
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Brandon Drenon
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Record-breaking heatwave hits the US West
A desert community in Arizona has broken the record for the highest temperature ever recorded in March in the US.
Temperatures reached 43C (110F) in the area, located just outside Martinez Lake in the Yuma Desert on Thursday, according to the National Weather Service (NWS).
The record-breaking temperature was part of an unusually intense heatwave that blanketed much of the US southwest this week during the final days of winter.
The previous March temperature record of 42C (108F) had been around for more than 60 years and was first set in Rio Grande, Texas, in 1964.
Records for earlier-than-usual high temperatures were broken in multiple states by the heatwave, including in California, Arizona and Nevada.
A town near North Shore, California, matched the previous March record this week, hitting 42C (108F), on 18 March, according to the NWS.
Phoenix also recorded its hottest March day ever on Thursday, climbing to 40C (105F), past the previous record of 39C (102F) which was set on Wednesday.
Las Vegas reached 95F (35C), surpassing the previous record of 34C (94F) on Wednesday.
“Extreme early-season heat coupled with high tourism rates will make this heat very dangerous,” the Las Vegas, Nevada NWS office warned earlier this week.
Typically, the average first 105F degree day of the year does not occur until the end of May, the NWS said.
But those norms were shattered this week.
The intense heat was the result of a strong, slow-moving high-pressure system (often called a heat dome) trapping hot air over the region, pushing temperatures 20–30F above normal.
Heatwaves have become more frequent, more intense, and last longer because of human-induced climate change.
The world has already warmed by about 1.1C since the industrial era began and temperatures will keep rising unless governments around the world make steep cuts to emissions.
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Climate
United States
Severe weather
Heatwaves