A massive snowstorm in Moscow on Thursday caused delays to more than 150 flights and brought traffic to a standstill. According to AP, none of Moscow's three airports have been closed, but all three were hit with severe delays, including more than a hundred flights being delayed from Domodedovo south of the city. The snowstorm began early Thursday morning and the Russian Meteorological Office said it expects up to 4 inches of snow to fall in Moscow in a single day.