The first major storm of the winter season dropped more than a foot of snow in parts of the Northeast on Jan. 8, creating treacherous travel conditions in some areas while also bringing an end to a mostly snowless winter so far.

Heavy to moderate snow was expected to continue to fall over New York and New England on Jan. 7, before dwindling by Monday morning, forecasters said.

More than nine million people from the northeastern United States to Northern Arizona were under winter storm warnings on Sunday evening.

Preliminary snowfall totals through Sunday evening were above six inches in many areas of the Northeast and reached or exceeded a foot in parts of Massachusetts, New York and Pennsylvania.

The National Weather Service warned that the “rapidly strengthening” storm would continue to disrupt travel. Forecasters warned of low visibility and dangerous driving conditions during the heaviest snowfall, which could reach one to two inches per hour.

More than 820 flights were canceled in the United States as of Sunday evening, according to FlightAware, a flight tracking service. As of Jan. 7-8,  3:30 p.m., more than 160 flights to and from Boston Logan International Airport had been canceled.

Amtrak service was modified on the Northeast Regional and Acela routes.

Power outages affected a few thousand residents across the Northeast. As of Jan. 7, more than 12,000 customers were without power in Massachusetts, according to PowerOutage.us, which tracks the utility industry.

More than 70 million people were under winter weather alerts spread over 1,400 miles from parts of the Texas-Mexico border to southern New York.

Ahead of the storm, residents scrambled for snow-removal supplies and officials discouraged travel. For several days, officials and forecasters in the Northeast had warned of dangerous conditions, with the region getting either heavy snow, freezing rain or a mix of the two.

As of Jan. 6, the National Weather Service office in New York reported two-tenths of an inch of snow had fallen in Central Park, though some outlying suburbs got four or more inches. It has been almost 700 days since Central Park last received an inch of snow on a single day.

The massive snowstorm left a breathtaking winter landscape in its wake, blanketing everything in a serene layer of snow. As communities grapple with the aftermath, the resilience of individuals and the beauty of nature amidst the wintry chaos become evident.