There was snow last year, CNN reported, but before that the last recorded snowfall was almost 40 years ago. Cold air that caused heavy snowfall on the East Coast crossed the Atlantic, making temperatures drop in unexpected places, like the Sahara.
This is the second year in a row that snow fell on the sands of the Sahara desert. That weird weather wasn't isolated, either, says atmospheric scientist Mike Kaplan at the Desert Research Institute in Nevada.
Snowfall is something which we usually see in hilly areas but this winter a thick coat of white snow can be seen in Sahara Dessert, the largest hot desert in the world.
Photographer Karim Bouchetata said: "We were really surprised when we woke up to see snow again".
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While this week's Saharan snowstorm was unusual, "it's not like it's never happened before, Kaplan says".
Images taken by Nasa's Landsat 8, an Earth observation satellite, showed snowfall near the northern Algerian town of Ain Sefra, which sits between the Atlas Mountains and the northern edge of the Sahara.
Ain Sefra is known as the gateway to the Sahara desert, where temperatures regularly reach 35 degrees Celsius in July and August.
It just means if there were fast-melting flurries in the Sahara's vast 3.6 million square mile range, no one spotted or recorded them. "A year seems like a long time to you and me, but it's not a long time for the atmosphere".