A cold front stalled north of the region on March 1st. Meanwhile, a wave of low pressure developed along this front in the Ohio Valley and move eastward,  explosively deepening just Southeast of Long Island on March 2nd. This large and very deep area of low pressure moved slowly just south of due East over the open waters of the North Atlantic Ocean through Sunday March 4th. This lead to a variety of weather hazards during this time frame.
Strong Northwest winds with gusts up to around 60 mph occurred on March 2nd and 3rd. This lead to widespread damage to trees and power lines, leading to extensive power outages across the region.
Minor coastal flooding over multiple tide cycles occurred along the Delaware coast March 2nd through 4th. Moderate coastal flooding occurred during the high tide on Sunday morning the 4th in Sussex County. Conversely, blowout tides occurred in portions of Delaware Bay late on March 2nd into the 3rd.
Heavy rainfall occurred over the Northern third of Delaware on March 1st and 2nd, with widespread rainfall amounts of 1 to 2 inches. Areal and minor small stream flooding occurred.
As the rain changed to snow on the 2nd, up to 2 inches of snowfall was observed in New Castle County Delaware.
The Delaware Emergency Management Agency (DEMA) placed its Emergency Operations Center at an Enhanced Activation Level due to weather conditions.

High Wind in KENT, DELAWARE
From 02-MAR-18 15:49:00 to 02-MAR-18 15:49:00 (EST-5)
Magnitude: 54.00 MG
Reported by: AWOS

A wind gust of 62 mph was recorded by the AWOS unit at Dover Air Force Base at 1549EST. Numerous downed trees were reported in the city of Dover as a result of strong winds.  A large tree fell across Horsepond Road, closing that street for several hours.

High Wind in NEW CASTLE, DELAWARE
From 02-MAR-18 15:00:00 to 02-MAR-18 15:00:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Newspaper

A wind gust of 58 mph was recorded by the ASOS unit at New Castle County Airport at 1454EST. Centerville Road was closed between Hillside Road and Barley Mill Road due to multiple trees down.  Delaware Rt. 1 exit ramp to Delaware Rt. 299 was closed due to downed trees and wires. The speed limit on I-495 was reduced from 65 to 55 mph due to the strong winds.

Coastal Flood in INLAND SUSSEX, DELAWARE
From 04-MAR-18 07:00:00 to 04-MAR-18 14:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Moderate coastal flooding with a number of road closures in the coastal communities of Sussex County.  The peak tide was 7.00 feet MLLW at Lewes and 5.38 feet MLLW at Indian River Inlet.

Coastal Flood in DELAWARE BEACHES, DELAWARE
From 04-MAR-18 07:00:00 to 04-MAR-18 14:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Moderate coastal flooding with a number of road closures in the coastal communities of Sussex County.  The peak tide was 7.00 feet MLLW at Lewes and 5.38 feet MLLW at Indian River Inlet.

High Wind in INLAND SUSSEX, DELAWARE
From 02-MAR-18 15:00:00 to 02-MAR-18 15:00:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Emergency Manager

Downed trees were reported throughout the county.  A wind gust of 54 mph was reported Greenwood at 1516EST by a mesonet station. A wind gust of 49 mph was reported by the ASOS unit at Sussex County Airport in Georgetown at 1203EST on March 2nd.

High Wind in DELAWARE BEACHES, DELAWARE
From 02-MAR-18 07:49:00 to 02-MAR-18 07:49:00 (EST-5)
Magnitude: 57.00 MG
Reported by: River/Stream Gage

A 66 MPH wind gust was measured at the NOS tide gage at Lewes at 0800EST. Delaware's Department of Natural Resources  and Environmental Control's Division of Watershed Stewardship reported that beach and dune erosion was more serious along the bay shore than along the Ocean front.  A 5 foot loss along the sand dunes in Lewes.