Video | Large hailstones fell in the United Arab Emirates

In the United Arab Emirates In the Middle East, it rained hailstones the size of thumbs on Monday, reports news agency Reuters. Eyewitness video shows what the ground looked like after a hailstorm in the city of Al Ain in the southeast of the country.

Hailstones are formed when the water vapor inside the clouds begins to condense and freeze. Their size can vary from a few millimeters to several centimeters. The largest hailstones observed in Finland have been 9 centimeters in diameter, he says weather Institute.

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