WASHINGTON (AP)— Earth’s heat is stuck on high.

Thanks to a combination of global warming and an El Nino, the planet shattered monthly heat records for an unprecedented 12th straight month, as April smashed the old record by half a degree, according to federal scientists.

The National Oceanic and Atmospheric Administration’s monthly climate calculation said Earth’s average temperature in April was 58.7 degrees. That’s 2 degrees warmer than the 20th century average and well past the old record set in 2010. The Southern Hemisphere led the way, with Africa, South America and Asia all having their warmest Aprils on record, NOAA climate scientist Ahira Sanchez-Lugo said. NASA was among other organizations that said April was the hottest on record.

The last month that wasn’t record hot was April 2015. The last month Earth wasn’t hotter than the 20th-century average was December 1984, and the last time Earth set a monthly cold record was almost a hundred years ago, in December 1916, according to NOAA records.

“These kinds of records may not be that interesting, but so many in a row that break the previous records by so much indicates that we’re entering uncharted climatic territory (for modern human society),” Texas A&M University climate scientist Andrew Dessler said in an email.

At NOAA’s climate monitoring headquarters in Asheville, North Carolina, “we are feeling like broken records stating the same thing” each month, Sanchez-Lugo said.

And more heat meant record low snow for the Northern Hemisphere in April, according to NOAA and the Rutgers Global Snow Lab. Snow coverage in April was 890,000 square miles below the 30- year average.