Sweater weather is coming to the North Pole Wednesday.

Not exactly. But a storm in the North Atlantic has drawn warm air up to the North Pole, pushing temperatures above the freezing point. That’s 50 degrees above normal, experts said Wednesday.

This is only the fourth time since records have been kept that temperatures have gotten above freezing on the North Pole in the period between November and March, said Bob Henson, a meteorologist for The Weather Underground.

For some reason, it’s always been in December, he said, occurring in 1959, 1990 and 2014. The fact that it has occurred in the last two years is due to the warmer atmosphere. Global temperatures in the past two years are the warmest in the last 100 years.

El Niño spreads warm water in the Pacific, which tends to warm the global atmosphere. The weather pattern is forecast to continue well into 2016.

“The second year of El Niño tends to be warmer,” Henson said.

Earlier this month, the National Oceanic and Atmospheric Administration, or NOAA, issued a report that concluded the Arctic is warming twice as fast as other parts of the planet.

A warmer North Pole around holidays seems to have captured the public’s attention, Henson said.

“It taps into people’s anxiety about Santa,” he said.