After a period of record warmth in late February, weather patterns across the continent abruptly became much more active in March.
 Four powerful nor'easters affected the United States and eastern Canada in that month alone, each dropping more than a foot of snow in the areas affected.

First nor'easter - March 1–3
The first nor'easter began to take shape over the Mid-Atlantic states at the transition of February and March.
 As an area of low pressure moved into the interior Northeast late on March 1, snowfall fell in areas close to the Canada–United States border, while precipitation in coastal areas was rain due to slightly warmer air.
Overnight into the early morning hours of March 2, a new area of low pressure formed and rapidly strengthened off the coast of New Jersey, while snow began to slowly increase in coverage near Pennsylvania and southern New York.
Wet bulbing helped bring snow to areas closer on the coast, such as New York City.
 Although the most severe damage was caused by flooding as well as snow, unusually high tides and storm surges along the coast, wind and downed trees caused massive inland power outages, with the number of outages as high as 1.6 million at one point.
As of March 2, at least 15 people are known to have been killed as a result of the storm, five from falling trees or branches.

Second nor'easter - March 6–8
As the first nor'easter occurred, a smaller, but significant blizzard struck the Sierra Nevada mountains and then tracked across the continent as a large weather front, dropping snow across the Midwestern United States and interior Canada.
 As it reached the Great Lakes on March 6, another low pressure area formed off the Outer Banks of North Carolina.
 By mid-afternoon the next day, the two systems had merged into a second nor'easter, which rapidly intensified off the New Jersey coastline and dropped up to over 3 feet (36 in) or more of wet snow across much of the Northeast, which hampered the recovery efforts from the first nor'easter.
The storm caused up to 1 million people to lose power, and at least 1 person has been confirmed dead due to the storm as of March 7.
Hundreds of flights were cancelled across the region, and many schools closed due to the nor'easter, although some opted to remain open.
Many freeways were also closed in the regions, and several states were put under state of emergencies.
In Pennsylvania, Governor Tom Wolf declared a state of emergency for several counties in the eastern part of the state.
A snow emergency went into effect for the city of Philadelphia on the morning of March 7.
Several municipalities in the Philadelphia area declared snow emergencies and many schools and government offices were closed on March 7.
Many attractions in the Philadelphia area either closed early or were closed for the entire day on March 7.
 The nor'easter had moved off by the morning of March 9, but its remnants stalled over Maritime Canada and persisted throughout the weekend.

Third nor'easter - March 12–14
On the night of March 11, several areas of low pressure developed over the American Southeast and merged into a third nor'easter within 24 hours.
 On March 13, the storm produced blizzard conditions and a swath of 1–3 feet of snow in New England as it moved northeast into the Gulf of Maine.
The storm brought heavy snow blizzard conditions to Rhode Island on March 13.
Blizzard conditions were reported in Newport.
Most of the state received at least one foot of snow, peaking at 25.1 inches (64 cm) in Foster.
The storm brought heavy snow and blizzard conditions to Massachusetts on March 13.
Blizzard conditions were reported in several locations including Boston, Hyannis, Falmouth, Plymouth, Marshfield, and Martha's Vineyard.
Over two feet of snow were reported in portions of the state, peaking at 28.3 inches (72 cm) in Methuen.
Wind gusts of 47 mph (76 km/h) were reported at Logan International Airport in Boston while gusts reached 77 mph (124 km/h) on Nantucket Island, 79 mph (127 km/h) in Hyannis, and 81 mph (130 km/h) in East Falmouth.
A storm surge of 3 feet (0.91 m)
After a period of record warmth in late February, weather patterns across the continent abruptly became much more active in March.  Four powerful nor'easters affected the United States and eastern Canada in that month alone, each dropping more than a foot of snow in the areas affected.
First nor'easter - March 1–3
The first nor'easter began to take shape over the Mid-Atlantic states at the transition of February and March.  As an area of low pressure moved into the interior Northeast late on March 1, snowfall fell in areas close to the Canada–United States border, while precipitation in coastal areas was rain due to slightly warmer air. Overnight into the early morning hours of March 2, a new area of low pressure formed and rapidly strengthened off the coast of New Jersey, while snow began to slowly increase in coverage near Pennsylvania and southern New York. Wet bulbing helped bring snow to areas closer on the coast, such as New York City.  Although the most severe damage was caused by flooding as well as snow, unusually high tides and storm surges along the coast, wind and downed trees caused massive inland power outages, with the number of outages as high as 1.6 million at one point. As of March 2, at least 15 people are known to have been killed as a result of the storm, five from falling trees or branches.
Second nor'easter - March 6–8
As the first nor'easter occurred, a smaller, but significant blizzard struck the Sierra Nevada mountains and then tracked across the continent as a large weather front, dropping snow across the Midwestern United States and interior Canada.  As it reached the Great Lakes on March 6, another low pressure area formed off the Outer Banks of North Carolina.  By mid-afternoon the next day, the two systems had merged into a second nor'easter, which rapidly intensified off the New Jersey coastline and dropped up to over 3 feet (36 in) or more of wet snow across much of the Northeast, which hampered the recovery efforts from the first nor'easter. The storm caused up to 1 million people to lose power, and at least 1 person has been confirmed dead due to the storm as of March 7. Hundreds of flights were cancelled across the region, and many schools closed due to the nor'easter, although some opted to remain open. Many freeways were also closed in the regions, and several states were put under state of emergencies. In Pennsylvania, Governor Tom Wolf declared a state of emergency for several counties in the eastern part of the state. A snow emergency went into effect for the city of Philadelphia on the morning of March 7. Several municipalities in the Philadelphia area declared snow emergencies and many schools and government offices were closed on March 7. Many attractions in the Philadelphia area either closed early or were closed for the entire day on March 7.  The nor'easter had moved off by the morning of March 9, but its remnants stalled over Maritime Canada and persisted throughout the weekend.
Third nor'easter - March 12–14
On the night of March 11, several areas of low pressure developed over the American Southeast and merged into a third nor'easter within 24 hours.  On March 13, the storm produced blizzard conditions and a swath of 1–3 feet of snow in New England as it moved northeast into the Gulf of Maine. The storm brought heavy snow blizzard conditions to Rhode Island on March 13. Blizzard conditions were reported in Newport. Most of the state received at least one foot of snow, peaking at 25.1 inches (64 cm) in Foster. The storm brought heavy snow and blizzard conditions to Massachusetts on March 13. Blizzard conditions were reported in several locations including Boston, Hyannis, Falmouth, Plymouth, Marshfield, and Martha's Vineyard. Over two feet of snow were reported in portions of the state, peaking at 28.3 inches (72 cm) in Methuen. Wind gusts of 47 mph (76 km/h) were reported at Logan International Airport in Boston while gusts reached 77 mph (124 km/h) on Nantucket Island, 79 mph (127 km/h) in Hyannis, and 81 mph (130 km/h) in East Falmouth. A storm surge of 3 feet (0.91 m) 
2017–18 North American winter