An area of high pressure early on the 10th gave way to an advancing low pressure system which traveled up the Ohio Valley. This system moved across the region during the nighttime hours of the 10th and then tracked to the northeast during the morning of the 11th. Moisture in the form of snow and rain overspread the area from southwest to northeast during the day on the 10th. Some of the snow was moderate to heavy for a time across the northern regions. There was actually a break in the precipitation for a time during the day on the 10th across central and into southern New Jersey. As milder air worked its way into the area, the snow and rain mixed with sleet and then changed over to some freezing rain and plain rain. The precipitation ended from west to east during the morning hours of the 11th.
Minor accidents were reported on Interstate 78 in Warren County on the 10th due to snow that produced slippery conditions. Many local roads were also slippery which resulted in car accidents, some of which involved minor injuries. Snow caused slippery roadways in Morris County on the 10th. The State Police reported that conditions on the highways were slippery during the afternoon, particularly on the ramps. During the evening, it was reported that the conditions worsened quite a bit, especially on Route 80. Jersey Central Power and Light reported a few outages in Morris County. The snowy conditions prompted cancellations of several community events or some changed their scheduled times. Jersey Central Power and Light reported a few outages in Sussex County on the 10th. There was just enough icing that produced slippery conditions in other areas, particularly on bridges, overpasses and other elevated structures.
Some snowfall totals included; 3.3 inches in Blairstown (Warren County), 3.1 inches in Oak Ridge (Morris County), 3.0 inches in Wantage (Sussex County), 2.8 inches in Califon (Hunterdon County), 2.8 inches in Hopatcong (Sussex County), 2.3 inches in Butler (Morris County), 2.1 inches in Hackettstown (Warren County), 2.0 inches in Metuchen (Middlesex County), 2.0 inches in Whitehouse (Hunterdon County), 1.9 inches in Neshanic (Somerset County), 1.5 inches in Hillsborough (Somerset County), 1.3 inches in Edison (Middlesex County), 1.0 inch in Belle Mead (Somerset County), 1.0 inch in Old Bridge (Middlesex County), 0.8 of an inch in Holmdel (Monmouth County), 0.7 of an inch in Ewing (Mercer County), 0.5 of an inch in Colts Neck (Monmouth County), 0.2 of an inch in Edgewater Park (Burlington County), 0.1 of an inch in Mount Holly (Burlington County) and 0.1 of an inch in National Park (Gloucester County). Ice accumulations were generally less than one tenth of an inch.

Winter Weather in CAMDEN, NEW JERSEY
From 10-JAN-09 17:00:00 to 11-JAN-09 02:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A few periods of snow which mixed with rain and sleet and even some freezing rain moved in during the early evening hours of the 10th. While there were some breaks in the precipitation, temperatures were right around freezing which resulted in some icy spots.

Winter Weather in NORTHWESTERN BURLINGTON, NEW JERSEY
From 10-JAN-09 17:30:00 to 11-JAN-09 02:45:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A few periods of snow which mixed with rain and sleet and even some freezing rain moved in during the early evening hours of the 10th. While there were some breaks in the precipitation, temperatures were right around freezing which resulted in some icy spots.

Winter Weather in MIDDLESEX, NEW JERSEY
From 10-JAN-09 07:30:00 to 11-JAN-09 03:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A period of snow which mixed with some sleet moved in during the morning hours of the 10th. There was a fairly brief break in the precipitation during the midday hours, then another round moved in and ended during the early morning hours of the 11th. There was actually a burst of snow during the afternoon of the 10th. Temperatures were at or just below freezing for awhile, which resulted in some icy spots.

Winter Weather in SOMERSET, NEW JERSEY
From 10-JAN-09 07:30:00 to 11-JAN-09 03:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A period of snow which mixed with some sleet moved in during the morning hours of the 10th. There was a fairly brief break in the precipitation during the midday hours, then another round moved in and ended during the early morning hours of the 11th. There was actually a burst of snow during the afternoon of the 10th. Temperatures were at or just below freezing for awhile, which resulted in some icy spots.

Winter Weather in HUNTERDON, NEW JERSEY
From 10-JAN-09 07:45:00 to 11-JAN-09 03:45:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A period of snow which mixed with some sleet moved in during the morning hours of the 10th. There was a fairly brief break in the precipitation during the midday hours, then another round moved in and ended during the early morning hours of the 11th. There was actually a burst of snow during the afternoon of the 10th. Temperatures were at or just below freezing for awhile, which resulted in some icy spots.

Winter Weather in WARREN, NEW JERSEY
From 10-JAN-09 08:00:00 to 11-JAN-09 04:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A period of snow which mixed with some sleet moved in during the morning hours of the 10th. There was a fairly brief break in the precipitation during the midday hours, then another round moved in and ended during the early morning hours of the 11th. There was actually a burst of snow during the afternoon of the 10th. Temperatures were at or just below freezing for awhile, which resulted in some icy spots.

Winter Weather in MORRIS, NEW JERSEY
From 10-JAN-09 08:00:00 to 11-JAN-09 04:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A period of snow which mixed with some sleet moved in during the morning hours of the 10th. There was a fairly brief break in the precipitation during the midday hours, then another round moved in and ended during the early morning hours of the 11th. There was actually a burst of snow during the afternoon of the 10th. Temperatures were at or just below freezing for awhile, which resulted in some icy spots.

Winter Weather in SUSSEX, NEW JERSEY
From 10-JAN-09 11:00:00 to 11-JAN-09 05:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snow overspread the area toward midday on the 10th and even fell moderate at times. The snow mixed with sleet then changed over to freezing rain during the night of the 10th, then ended early in the morning on the 11th. Temperatures were below freezing, which resulted in icy conditions.

Winter Weather in WESTERN OCEAN, NEW JERSEY
From 10-JAN-09 07:00:00 to 11-JAN-09 03:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A period of snow which mixed with rain and sleet and even some freezing rain moved in during the morning hours of the 10th. There was a break in the precipitation during the midday and afternoon hours, another light round moved in during the evening and ended during the early morning of the 11th. Temperatures were at or just below freezing for awhile, which resulted in some icy spots.

Winter Weather in WESTERN MONMOUTH, NEW JERSEY
From 10-JAN-09 07:00:00 to 11-JAN-09 03:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A period of snow which mixed with rain and sleet and even some freezing rain moved in during the morning hours of the 10th. There was a break in the precipitation during the midday and afternoon hours, another light round moved in during the evening and ended during the early morning of the 11th. Temperatures were at or just below freezing for awhile, which resulted in some icy spots.

Winter Weather in MERCER, NEW JERSEY
From 10-JAN-09 07:00:00 to 11-JAN-09 03:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A period of snow which mixed with rain and sleet and even some freezing rain moved in during the morning hours of the 10th. There was a break in the precipitation during the midday and afternoon hours, another light round moved in during the evening and ended during the early morning of the 11th. Temperatures were at or just below freezing for awhile, which resulted in some icy spots.

Winter Weather in GLOUCESTER, NEW JERSEY
From 10-JAN-09 17:00:00 to 11-JAN-09 02:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A few periods of snow which mixed with rain and sleet and even some freezing rain moved in during the early evening hours of the 10th. While there were some breaks in the precipitation, temperatures were right around freezing which resulted in some icy spots.