Trees are covered with hoar-frost on a cold day in Gulmarg, northwest of Srinagar, Indian controlled Kashmir, Monday, Jan. 11, 2021. Snow this winter has brought along with it thousands of locals and tourists to Indian-controlled Kashmir's high plateau, pastoral Gulmarg, which translates as “meadow of flowers." (AP Photo/ Dar Yasin)

A woman with a dog walks through a snow covered street in Belgrade, Serbia, Sunday, Jan. 17, 2021. MMeteorologists predict sub zero temperatures in Serbia throughout the coming week. (AP Photo/Darko Vojinovic)

A roe deer moves across a snowy village road, as temperatures dipped to minus 21 degrees Celsius (minus 5.8 degrees Fahrenheit) near the town of Ignalina, some 120km (74,5 miles) north of the capital Vilnius, Lithuania, Sunday, Jan. 17, 2021. (AP Photo/Mindaugas Kulbis)

People wearing a face mask to protect against coronavirus walk through a snow covered street in Belgrade, Serbia, Sunday, Jan. 17, 2021. Meteorologists predict sub zero temperatures in Serbia throughout the coming week. (AP Photo/Darko Vojinovic)

A woman walks through a snow covered street in Belgrade, Serbia, Sunday, Jan. 17, 2021. Meteorologists predict sub zero temperatures in Serbia throughout the coming week. (AP Photo/Darko Vojinovic)

A couple walk along a snow covered path in Belgrade, Serbia, Sunday, Jan. 17, 2021. Meteorologists predict sub zero temperatures in Serbia throughout the coming week. (AP Photo/Darko Vojinovic)

Freshly fallen snow covers the Roemerberg square in Frankfurt, Germany, Sunday, Jan. 17, 2021. (AP Photo/Michael Probst)

A woman takes pictures of the Old Opera in Frankfurt, Germany, after snow falls on Sunday, Jan. 17, 2021. (AP Photo/Michael Probst)