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Wildfires used to 'go to sleep' at night. Climate change has them burning overtime
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Wildfires used to 'go to sleep' at night. Climate change has them burning overtime

  • By SETH BORENSTEIN AP Science Writer

Wildfires used to die down and even stop at night with cooler temperatures and increased humidity. But a study released Friday says climate change is making burning weather more around the clock in North America because night is becoming warmer and drier. Canadian fire scientists say potential burning hours for fires have increased 36% in the last 50 years. California now has about 550 more fire-friendly hours a year than it did in the 1970s. North American summer nights are warming faster than days, evening relief is evaporating for forests and that means the area of land burned is soaring.

March smashes record as most abnormally hot month for continental US, federal meteorologists say
National

March smashes record as most abnormally hot month for continental US, federal meteorologists say

  • By SETH BORENSTEIN AP Science Writer

March has been the hottest month on record for the continental United States in 132 years, according to federal weather data. The National Oceanic and Atmospheric Administration reports that March's average temperature was 50.85 degrees Fahrenheit, which is 9.35 degrees above the 20th-century norm. This surpasses the previous record set in March 2012. Climate Central meteorologist Shel Winkley highlights the unprecedented nature of this heat, noting the sheer volume of records broken. More than 19,800 daily temperature records were shattered, and 2,200 places set monthly highs. Experts predict that a brewing El Nino could intensify global warmth.

Records shattered as summer heat hits Southwest in March; 'This is what climate change looks like'
National

Records shattered as summer heat hits Southwest in March; 'This is what climate change looks like'

  • By SETH BORENSTEIN AP Science Writer

Scientists say a record-smashing March heat wave in the U.S. Southwest shows climate change is already driving more dangerous weather extremes. World Weather Attribution said Friday that the heat would have been virtually impossible without human-caused warming. Experts say extremes now hit more often, in odd seasons, and in unusual places. NOAA data shows a much larger share of the country sees extreme conditions than decades ago. An analysis by The Associated Press finds the U.S. breaks far more heat records than in past decades. One former FEMA official said disasters now fall outside old planning models and noted insurers pulling back.