Rain, snow and fog posed challenges for cities across the globe this week.
On Tuesday, heavy rain fell over Johannesburg, South Africa, creating a sea of umbrellas at Nelson Mandela's memorial service.
On Wednesday, dense fog set an eerie scene throughout London, resulting in near-zero visibility and canceling hundreds of flights.
Thursday brought early-season snow to Jerusalem and parts of the Middle East. Though not unusual, snow events only occur every few years for the region.
On several days this week, lake-effect snow piled up across parts of New York. As of Friday afternoon, some cities had as much as 3 feet.
Finally, skygazers caught a glimpse of the Geminid meteor shower this week. The celestial show peaks this weekend.
Photogs across the globe have attempted to catch a good photo of the Geminid meteor shower this week. The shower, one of the most active celestial events of the year, will peak Friday, Dec. 13, until dawn on Saturday but may be hidden beneath clouds in much of the United States. (Photo/ James Yule)
Dense fog hovered over London on Wednesday morning, creating near-zero visibility for nearly 5 hours and resulting in have traffic delays across the city. By Wednesday afternoon, more than 800 arriving and departing flights were cancelled from London Heathrow International Airport. (Photo/London Metropolitan Police Service)
After the passing of Nelson Mandela last week, thousands gathered at his memorial on Tuesday, Dec. 10, despite heavy rain in Johannesburg, South Africa. (AP Photo/Tsvangirayi Mukwazhi)
A winter storm walloped parts of the Middle East, bringing early snow to Jerusalem Thursday, Dec. 12. (AP Photo/Mahmoud Illean)
Lake-effect snow has buried parts of the Northeast this week, bringing more than 70 inches to parts to upstate New York. More will fall for the area through Sunday from a system stretching from Kansas City to Boston. (Photo/Julie Wysocki)
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