A nor’easter dumped more than a foot of snow in parts of Maine by Monday afternoon, forcing government and school closures around the state and a reduced speed limit on parts of the Maine Turnpike, but few power outages.

The snow began to fall Sunday afternoon, picked up overnight and continued throughout the day Monday. Much of southern and central Maine is under a winter storm warning until 1 a.m. Tuesday.

According to the National Weather Service, snowfall totals will climb before the storm wraps. Forecasters predicted parts of southern Maine near the New Hampshire line would be hit hardest. Northern Maine will avoid the worst of it, with Jackman likely to get no more than a few inches.

“The bulk of the snow has fallen, but we’re technically not done yet,” Jerry Combs, a National Weather Service meteorologist stationed in Gray, said Monday morning. “We’ll see a few more inches before it’s done, so don’t let your guard down. It’s a fluffy snow that will blow around, so visibility could be limited.”

York County appeared to be the “bull’s-eye” of this winter storm, Combs said. According to a noontime snowfall tally, Kittery reported 20 inches, Ogunquit had 15.9 inches, and Kennebunkport measured 15.4 inches.

The weather service in Gray was still awaiting updated snowfall measurements from spotters at about 7:30 p.m., but a meteorologist said early reports from the southern Maine and New Hampshire coastline came in at over 20 inches, Monday evening, including an even 20 in Kittery.

Here are the National Weather Service’s other local snowfall tallies:

• Androscoggin County: from 7.9 inches in Greene to 17 inches in Turner
• Cumberland County: from 9.5 inches in Raymond to 15 inches in Cumberland
• Franklin County: from 9.8 inches in Phillips to 11.7 inches in Rangeley
• Kennebec County: from 8.6 inches in Winslow to 12 inches in Augusta
• Knox County: from 8 inches on Matinicus Isle to 13 inches in Rockport
• Lincoln County: from 9 inches in Jefferson to 12 inches in Boothbay
• Oxford County: from 10 inches in Porter to 14 inches in Bethel
• Somerset County: from 5 inches in Rockwood to 13 inches in Cornville
• Waldo County: from 7 inches in Prospect to 12 inches in Monroe
• York County: from 7 inches in North Berwick to 20 inches in Kittery

The snow in southern Maine slowed down Monday morning, but a second round of heavy snow was expected Monday evening, according to the forecast from the National Weather Service in Gray. Down East Maine was still getting heavy snow at times Monday, with up to 3 inches falling an hour.

The National Weather Service warned of the potential for “snowbands,” or smaller zones of intense snowfall within the larger winter snowstorm, that could lead to rapid accumulation and make travel conditions extremely dangerous.

Slippery conditions and limited visibility prompted Maine State Police to reduce speed limits along stretches of the Maine Turnpike to 45 mph at various times during the storm, with the precaution sometimes applying to the length of the 109-mile road.

The Portland International Jetport had to juggle a slew of weather-related delays. As of late Monday afternoon, half of the 28 originally scheduled arrivals had either been canceled or delayed, while seven out of 30 departing flights were canceled and two others delayed. Many flights that did make it in or out of the jetport were behind schedule.

Dozens of schools, town offices, libraries and courthouses closed Monday, ranging from Acton schools and Alfred town offices to York Judicial Center and York Public Library. All state offices were closed.

Almost no power outages occurred in Maine, according to utility providers Central Maine Power and Versant Power. Nationwide, more than 750,000 outages were reported Monday afternoon, mostly in the South, the Associated Press reported.

The National Weather Service office in Caribou identified the hardest hit areas in northern Maine: In Hancock County, Lamoine reported 12 inches at 7 a.m.; in Penobscot County, Hermon reported 14 inches at 11:15 a.m.; and in Washington County, Eastport reported 12.4 inches at 10:30 a.m.

According to the Maine Department of Health and Human Services, which tracks cold-related illnesses and injuries, 15 people were treated for cold-related medical conditions in weekend emergency room visits. The department recorded the statewide low temperature as 17.7 degrees below zero.

At least 25 deaths from the storm have been reported nationwide, including two people run over by snowplows in Massachusetts and Ohio, fatal sledding accidents in Arkansas and Texas, and eight people found dead outdoors across New York City, the AP reported.

This story contains reporting from the Associated Press.