Scientists are warning that a major heatwave in Greenland could lead to a whole lot of melted glacier ice this summer – 440 billion tons, to be exact.

A new report by the Associated Press took a detailed look at the dire situation in Greenland, and noted that the record-shattering heat from July 31 to Aug. 3 melted 58 billion tons of ice.

The National Snow & Ice Data Center notes that that figure is about 40 billion tons more than the 1981 to 2010 average for the same time period.

By the end of the summer, 440 billion tons are expected to have vanished, reportedly enough to flood Pennsylvania or the entire country of Greece about one foot deep.

“There’s every reason to believe that years that look like this will become more common,” University of Georgia ice scientist Tom Mote told the outlet.

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