A major winter storm dropped about 5 to 10 inches of snow across Kent and Sussex Counties and about 2 to 4 inches of snow in New Castle County. Intermittent light snow fell overnight on the 25th, but the storm related snow began around 7 a.m EST in southern Delaware, between 9 a.m. and 10 a.m. EST in central Delaware and reached northern Delaware between Noon EST and 1 p.m. EST. The heaviest snow in central and southern Delaware occurred during the late morning into the middle of the afternoon on the 26th. The snow ended just before sunrise on the 27th.  State Police reported that the winter storm caused about 75 vehicular accidents and around 30 disabled vehicles. There were six reported injuries. Vehicles were abandoned in Sussex County where drifting and blowing snow closed many roadways and made it difficult to keep them open.
Representative snowfall included 11.3 inches in Selbyville (Sussex County), 9.0 inches in Dover (Kent County), 8.5 inches in Delmar (Sussex County), 8.2 inches in Felton (Kent County), 8.0 inches in Woodside (Kent County), 4.8 inches in Laurel (Sussex County), 4.0 inches in Blackbird (New Castle County), 3.5 inches at the New Castle County Airport and 2.2 inches in Newark (New Castle County).
The onshore flow preceding the passage of the low pressure system caused minor tidal flooding around the time of the early afternoon high tide on the 26th in Sussex County. At Lewes, the high tide reached 6.12 feet above mean lower low water. Minor tidal flooding starts at 6.0 feet above mean lower low water.
The low pressure system responsible for the winter storm entered the United States in southern California on December 22nd. It moved across the southern Rockies and reached the northern Gulf of Mexico on Christmas Day. It was still a relatively weak low pressure system, but as it moved across the Gulf of Mexico, it started to strengthen. At 7 p.m. EST on the 25th, the low had deepened to 1004 millibars in the eastern Gulf of Mexico. From there, the low made a turn to the northeast while the intensification process increased. At 1 a.m. EST on the 26th, it was a 1001 millibar low, just east of Georgia, at 7 a.m. EST on the 26th a 992 millibar low just east of Wilmington, North Carolina and at 1 p.m. EST on the 26th a 986 millibar low about 100 miles east of Virginia Beach, Virginia. During the next six hours as the upper level support neared, the low's intensification rate peaked and at 7 p.m. EST on the 26th, the surface pressure fell to 972 millibars as it passed about 100 miles east of Long Beach Island, New Jersey. Overnight, the surface low was captured by the upper level low and this slowed its forward progress. The capturing phase occurred too late to bring more bands of heavy snow back into Delaware. At 1 a.m. EST on the 27th, the 970 millibar surface low was located about 50 miles southeast of Montauk Point, New York and at 7 a.m. EST, the 962 millibar low was located just southeast of Cape Cod, Massachusetts. The surface pressure bottomed at 961 millibars at 10 a.m. EST on the 27th and from there it slowly weakened as it passed south of Nova Scotia. The surface pressure of this winter storm dropped 31 millibars from 1 a.m. EST on the 26th to 1 a.m. EST on the 27th, well exceeding the meteorological definition of a bombing low pressure system (24 millibar drop in 24 hours).

Winter Weather in NEW CASTLE, DELAWARE
From 26-DEC-10 12:00:00 to 27-DEC-10 07:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in DELAWARE BEACHES, DELAWARE
From 26-DEC-10 07:00:00 to 27-DEC-10 06:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Heavy Snow in INLAND SUSSEX, DELAWARE
From 26-DEC-10 07:00:00 to 27-DEC-10 06:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Heavy Snow in KENT, DELAWARE
From 26-DEC-10 09:00:00 to 27-DEC-10 06:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS