A complex area of low pressure over the middle Atlantic, which involved several individual centers, slowly consolidated off the Virginia Capes Tuesday morning, March 20th into Wednesday March 21st along a frontal boundary. This primary low, the fourth nor'easter of March, gradually moved northeast Wednesday night, to a position southeast of the 40 North/70 West ���Benchmark��� coordinates on Thursday morning.
Rain developed across far southern New Jersey on Tuesday morning, March 20th. As this precipitation moved northward into a colder air mass, snow and sleet developed across the remainder of southern New Jersey during the afternoon hours.
Northeast winds increased throughout Tuesday, and gusted 40 to 50 mph along the Atlantic coast from Tuesday afternoon into Wednesday morning.
Minor coastal flooding occurred along the New Jersey oceanfront around the times of high tide Tuesday night, Wednesday morning, and again Wednesday night.
During Tuesday evening, a mixed bag of precipitation developed, with freezing rain, sleet, and snow, except rain closer to the coast.
Freezing rain lead to ice accretion up to 0.20��� across portions of southern New Jersey, causing downed trees and limbs, which impacted power lines, and led to power outages.
Meanwhile, higher elevations of eastern Pennsylvania and northwest New Jersey remained dry through the overnight hours of Tuesday into Wednesday. A change over to snow progressed southeast across New Jersey by late morning on Wednesday, March 21st, with the exception of Cape May County NJ, where it did not occur until the early to mid-afternoon. Meanwhile, snow began in the higher elevations of northwest New Jersey during the mid to late morning hours of Wednesday.
Moderate to heavy snowfall developed, and gradually overspread New Jersey, from Wednesday morning into the evening. Snowfall rates, particularly outside of the higher elevations of northern New Jersey were around one inch per hour at times. The snow gradually ended from west to east around midnight, except late night closer to the New Jersey shore.
Across New Jersey, snowfall amounts varied from less than 3 inches in portions of northern Sussex County and Cape May County, with a general 6 to 12 inches elsewhere, with the exception of portions of Monmouth, Ocean, and Burlington Counties, where some areas received 12 to 15 inches.
The weight of the heavy, wet snow brought down trees, limbs, and power lines across portions of southern New Jersey, which led to power outages. In fact, portions of Monmouth, southeast Burlington, Ocean, and Atlantic Counties in New Jersey were particularly hard hit with numerous trees and power lines down.

Winter Storm in EASTERN ATLANTIC, NEW JERSEY
From 21-MAR-18 14:00:00 to 22-MAR-18 02:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation began as rain during the evening hours on March 20th. After a lull during the overnight hours, rain mixed with snow during the morning and early afternoon hours of the 21st before changing over to all snow later in the afternoon, falling heavy at times through the evening hours. Some reported snowfall amounts include: 6.1 inches at Atlantic City Int'l Airport, 6.0 inches in Atlantic City, and 5.0 inches in Galloway Township.

Winter Storm in WESTERN CAPE MAY, NEW JERSEY
From 21-MAR-18 14:00:00 to 21-MAR-18 23:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation began as rain during the evening hours on March 20th. After a lull during the overnight hours, rain mixed with snow during the morning and early afternoon hours of the 21st before changing over to all snow later in the afternoon, falling heavy at times through the evening hours. Some reported snowfall amounts include: 10.0 inches at Greenfield, 6.2 inches at Woodbine, 4.5 inches at Eldora, 4.0 inches at Goshen, and 3.3 inches south of Cape May Court House.

Winter Storm in WARREN, NEW JERSEY
From 21-MAR-18 07:00:00 to 22-MAR-18 02:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation began as a wet, heavy snow during the evening hours on March 20th. After a lull during the overnight hours, a drier snow began falling, heavy at times, during the afternoon and evening hours on March 21st.  The heaviest snow from this event fell in the southern two-thirds of the county, generally south of I-80. Some snowfall reports include:  10.5 inches in Hackettstown, 10.4 inches in both Alpha and Stewartsville, 9.3 inches in Oxford, 8.5 inches in both Hope and Allamuchy, 7.5 inches in Blairstown Township, 7.5 inches in Columbia, and 7.3 inches in both Hope and Marksboro.

Winter Storm in CUMBERLAND, NEW JERSEY
From 21-MAR-18 09:00:00 to 22-MAR-18 01:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation began as rain during the evening hours on March 20th. After a lull during the overnight hours, rain mixed with snow during the morning and early afternoon hours of the 21st before changing over to all snow later in the afternoon, falling heavy at times through the evening hours. Some reported snowfall amounts include: 8.0 inches at Newport, 7.5 inches at Upper Deerfield Township, 6.5 inches at Newport Landing, and 6.0 inches at Seabrook.

Winter Weather in EASTERN CAPE MAY, NEW JERSEY
From 21-MAR-18 14:00:00 to 21-MAR-18 23:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation began as rain during the evening hours on March 20th. After a lull during the overnight hours, snow mixed with rain at times during the morning and afternoon hours of the 21st before changing over to all snow later in the evening, falling heavy at times. 6.0 inches of snow was reported in Ocean City, 3.5 inches in Sea Isle City, 3.0 inches in Stone Harbor and 0.8 inches in Wildwood Crest. Winds gusts of 40 MPH were reported along the coast, along with minor tidal flooding around the times of high tide Tuesday night March 20th and both high tides on Wednesday, March 21st.

Winter Storm in SOMERSET, NEW JERSEY
From 21-MAR-18 06:00:00 to 22-MAR-18 04:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation began as a wet, heavy snow during the evening hours on March 20th. After a lull during the overnight hours, snow continued, heavy at times, during the afternoon and evening hours on March 21st. Some reported snowfall amounts include: 8.5 inches in both Bedminster and Franklin Townships, 8.0 inches in both Somerset and Hillsborough, 7.8 inches in both Martinsville and Bernards Township, 7.5 inches in both Bridgewater and Manville, 7.0 inches in both Basking Ridge and Somerville, and 5.6 inches in Watchung.

Winter Storm in MORRIS, NEW JERSEY
From 21-MAR-18 08:00:00 to 22-MAR-18 03:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation began as a wet, heavy snow during the evening hours on March 20th. After a lull during the overnight hours, a drier snow began falling, heavy at times, during the afternoon and evening hours on March 21st. Snowfall totals were lower in the eastern portions of the county were mixing took place. Some snowfall reports include: 12.0 inches in Netcong, Green Pond, and Mine Hill Township, 11.2 inches in Jefferson Township, 11.0 inches in Marcella, 10.5 inches in both Rockaway and Mine Hill Township, 10.0 inches in Succasunna, 9.5 inches in Butler, 9.3 inches in Denville, 9.2 inches in both Budd Lake and Washington Township, 8.8 inches in both Mount Arlington and Randolph Township, 8.4 inches in Morristown, 8.2 inches at Charlottesburg Reservoir, 8.0 inches in Dover, 7.5 inches in Parsippany, 7.0 inches at Boonton Reservoir, 7.0 inches in Millington, 6.5 inches in Pine Brook, 4.0 inches in Beach Glen, and 3.7 inches in Pleasantville.

Winter Storm in MIDDLESEX, NEW JERSEY
From 21-MAR-18 08:00:00 to 22-MAR-18 02:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation began as a wet, heavy snow during the evening hours on March 20th. After a lull during the overnight hours, snow continued, heavy at times, during the afternoon and evening hours on March 21st. Some reported snowfall amounts include: 12.5 inches in Cheesequake, 11.6 inches in Old Bridge, 11.5 inches in both Port Reading and Metuchen, 11.0 inches in Hopelawn, 10.5 inches in both South Brunswick and Woodbridge Township, 10.0 inches in both Spotswood and Sayreville, 9.7 inches in Cranbury, 9.2 inches in Edison, 9.0 inches in Perth Amboy, South River, and Monroe Township, 8.8 inches in New Brunswick, 7.6 inches in Morristown, 6.8 inches in South Plainfield, and 4.5 inches in Plainsboro.

Winter Storm in GLOUCESTER, NEW JERSEY
From 21-MAR-18 09:00:00 to 21-MAR-18 23:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation began as rain during the evening hours on March 20th. After a lull during the overnight hours, rain mixed with snow during the morning and early afternoon hours of the 21st before changing over to all snow around noon, falling heavy at times through the evening hours. Some reported snowfall amounts include: 12.0 inches at West Deptford, 9.1 inches at Pitman, 8.0 inches at Sewell, and 7.8 inches near Turnersville.

Winter Storm in SALEM, NEW JERSEY
From 21-MAR-18 09:00:00 to 21-MAR-18 23:00:00 (EST-5)
Reported by: CoCoRaHS

Precipitation began as rain during the evening hours on March 20th. After a lull during the overnight hours, rain mixed with snow during the morning and early afternoon hours of the 21st before changing over to all snow around noon, falling heavy at times through the evening hours. Some reported snowfall amounts include: 5.8 inches near Alloway, 4.6 inches in Woodstown, and 3.5 inches near Bear.

Winter Storm in CAMDEN, NEW JERSEY
From 21-MAR-18 10:00:00 to 22-MAR-18 00:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation began as rain during the evening hours on March 20th. After a lull during the overnight hours, rain mixed with snow during the morning and early afternoon hours of the 21st before changing over to all snow around noon, falling heavy at times through the evening hours. Some reported snowfall amounts include:10.0 inches in Lindenwold, 9.5 inches in Somerdale, 9.3 inches in Bellmawr, and 7.0 inches in Jackson and Mt. Ephraim. Winds gusts of 40 MPH were reported along the coast, along with minor tidal flooding around the times of high tide Tuesday night March 20th and both high tides on Wednesday, March 21st.

Winter Storm in HUNTERDON, NEW JERSEY
From 21-MAR-18 06:00:00 to 22-MAR-18 02:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation began as a wet, heavy snow during the evening hours on March 20th. After a lull during the overnight hours, a drier snow began falling, heavy at times, during the afternoon and evening hours on March 21st.  Banding provided the mechanism for snowfall totals exceeding one foot in some locations.  Some reported snowfall amounts include: 14.0 inches in Byram, 13.1 inches in Stockton, 11.5 inches in Alpha, 11.3 inches in Hampton, 11.0 inches in Frenchtown, 10.4 inches in Hampton, 9.7 inches in Flemington, 9.3 inches in Cloverhill, 9.1 inches in Lebanon, 9.0 inches in Annandale, 9.0 inches in White House Station, 8.6 inches in Readington Township, 8.2 inches in Three Bridges, 8.1 inches in High Bridge, 8.0 inches in Clinton Township, and 6.7 inches in Wertsville.

Winter Storm in WESTERN MONMOUTH, NEW JERSEY
From 21-MAR-18 10:00:00 to 22-MAR-18 04:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation began as a rain-snow mix during the evening hours on March 20th. After a lull during the overnight hours, a mixture of rain and snow fell during the late morning and early afternoon hours.  As colder air moved in, precipitation changed to all snow, falling heavy at times during the late during the late afternoon and evening hours on March 21st. Some reported snowfall amounts include: 14.0 inches in Clarksburg, 13.6 inches in Marlboro, 13.0 inches in Freehold, Howell, and Lincroft, 12.7 inches in Colts Neck, 12.5 inches in Lakehurst, 12.1 inches in Shrewsbury, 12.0 inches in Manalapan, Tinton Falls, and Roosevelt, 11.5 inches in Strathmore, 11.0 inches in Matawan, 10.0 inches in Freehold and Hazlet, and 8.5 inches in Keyport.

Winter Storm in NORTHWESTERN BURLINGTON, NEW JERSEY
From 21-MAR-18 10:00:00 to 22-MAR-18 02:00:00 (EST-5)
Reported by: Official NWS Observations

Precipitation began as rain during the evening hours on March 20th. After a lull during the overnight hours, rain mixed with snow during the morning and early afternoon hours of the 21st before changing over to all snow around noon, falling heavy at times through the evening hours. Some reported snowfall amounts include: 12.0 inches at Mt. Laurel, 11.9 inches at WFO Mt. Holly, 10.5 inches at Lumberton, and 10.2 inches at Burlington.

Winter Storm in SUSSEX, NEW JERSEY
From 21-MAR-18 11:00:00 to 22-MAR-18 02:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation began as a wet, heavy snow during the evening hours on March 20th. After a lull during the overnight hours, a drier snow began falling, heavy at times, during the afternoon and evening hours on March 21st.  The heaviest snow from this event fell in the southern one-half of the county, with a sharp drop off in the far north. Some snowfall reports include:  10.0 inches in both Stockholm and Byram Township, 9.5 inches in Fredon, 8.5 inches in both Hardyston Township and Newton, 7.0 inches in Ogdensburg, 7.0 inches in Andover, Sparta, and Franklin, 2.5 inches in Vernon Valley, 1.3 inches in Sussex, 1.1 inches in Wantage, and 0.2 inches in Montague.

Winter Storm in SOUTHEASTERN BURLINGTON, NEW JERSEY
From 21-MAR-18 11:00:00 to 22-MAR-18 02:00:00 (EST-5)
Reported by: CoCoRaHS

Precipitation began as mainly rain during the evening hours on March 20th. After a lull during the overnight hours, rain mixed with snow during the morning and early afternoon hours of the 21st before changing over to all snow later in the afternoon, falling heavy at times through the evening hours. Some reported snowfall amounts include: 13.5 inches at Tabernacle and 8.1 inches south of Tabernacle Township.

Winter Storm in WESTERN ATLANTIC, NEW JERSEY
From 21-MAR-18 12:00:00 to 22-MAR-18 02:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation began as rain during the evening hours on March 20th. After a lull during the overnight hours, rain mixed with snow during the morning and early afternoon hours of the 21st before changing over to all snow later in the afternoon, falling heavy at times through the evening hours. Some reported snowfall amounts include: 10.5 inches at Hamilton Township, 9.3 inches at Estell Manor, 8.1 inches at Buena Vista Township, 8.0 inches at Egg Harbor, 7.9 inches at Northfield, 7.5 inches near Hammonton, 6.0 inches at Port Republic, and 5.8 inches in Galloway Township.

Winter Storm in MERCER, NEW JERSEY
From 21-MAR-18 07:00:00 to 22-MAR-18 03:00:00 (EST-5)
Reported by: COOP Observer

Precipitation began as a wet, heavy snow during the evening hours on March 20th. After a lull during the overnight hours, a drier snow began falling. The main winter storm snowfall began in the early morning hours of the 21st and continued into the early morning hours on the 22nd.  Some reported snowfall amounts include: 10.2 inches in Hamilton Township, 9.1 inches near Hightstown, 9.0 inches near Washington Crossing, 8.8 inches near Hopewell Township, 7.8 inches in Ewing Township, and 7.3 inches just north of Trenton.

Winter Storm in WESTERN OCEAN, NEW JERSEY
From 21-MAR-18 13:00:00 to 22-MAR-18 04:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation began as rain during the evening hours on March 20th. After a lull during the overnight hours, rain mixed with snow during the morning and early afternoon hours of the 21st before changing over to all snow later in the afternoon, falling heavy at times through the evening hours. Some reported snowfall amounts include: 15 inches in Lacey, 14.7 inches in Brick Township, 15.5 inches in Bayville and Berkeley Township, 14 inches in Pinewald, 13 inches in Holiday City and Waretown, 12.5 inches in Whiting, 12.0 inches in Toms River, 10 inches in Lakewood and Lakehurst, and 9.5 inches in Tuckerton.

Winter Storm in EASTERN MONMOUTH, NEW JERSEY
From 21-MAR-18 14:00:00 to 22-MAR-18 04:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation began as rain during the evening hours on March 20th. After a lull during the overnight hours, rain mixed with snow during the morning and early afternoon hours of the 21st before changing over to all snow later in the afternoon, falling heavy at times through the evening hours. More snow fell in the northern portions of the county. Some reported snowfall amounts include: 11.5 inches in Neptune Township and Wall Township, 10.0 inches in Long Branch, 9.5 inches in Manasquan, 9.0 inches in Wayside, and 8.0 inches in Spring Lake.
Winds gusts of 40 MPH were reported, along with minor tidal flooding around the times of high tide Tuesday night March 20th and both high tides on Wednesday, March 21st.

Winter Storm in EASTERN OCEAN, NEW JERSEY
From 21-MAR-18 14:00:00 to 22-MAR-18 04:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation began as rain during the evening hours on March 20th. After a lull during the overnight hours, rain mixed with snow during the morning and early afternoon hours of the 21st before changing over to all snow later in the afternoon, falling heavy at times through the evening hours. Some reported snowfall amounts include:12.0 inches in Toms River, 9.5 inches in both Point Pleasant Beach and Tuckerton, 9.0 inches in Barnegat, 8.0 inches in both South Seaside Park and Glen Cove, and 6.0 inches in Mantoloking.
Winds gusts of 40 MPH were reported along the coast, along with minor tidal flooding around the times of high tide Tuesday night March 20th and both high tides on Wednesday, March 21st.