As had been typical through much of the later half of the winter season across the eastern U.S., unseasonably cold air was in place across the region once again.  Morning low temperatures on this day were in the 20s across the northwest North Carolina mountains and in the low to mid 30s across the Piedmont. Meanwhile, a strong upper-level low pressure area in the southern stream was moving toward the region from the Mid-South.  A cold front was stalled along the Georgia and South Carolina Coast with a wave of surface low pressure tracking northeastward along the front near the Georgia Coast.  Precipitation spread into the area from the south during the mid-afternoon.  Dynamic cooling associated with the strong upper low caused rain at the onset of the event to quickly change to sleet and snow in the mountains and to a rain, sleet, snow mixture across the Piedmont.  The precipitation was quite heavy during the evening rush hour.  Thus, even though surface temperatures were right at the freezing mark, sleet began to accumulate on roads enough to cause travel problems in the hours around sunset.  Here are the winter precipitation accumulations reported across northwest and north central North Carolina during this event.
Alleghany County - 1.0 inch of snow just east-northeast of Glade Valley to 3.0 inches in Twin Oaks,
Ashe County - 1/2 inch in Glendale Springs to 2.0 inches just east-southeast of Jefferson,
Caswell County - 1.0 inch of sleet/snow mixture around Covington,
Rockingham County - 1/2 inch of sleet/snow mixture around Reidsville,
Surry County - a little over an inch of sleet/snow mixture around Ladonia,
Watauga County - 1/3 to 1/2 inch of snow around Sugar Grove,
Wilkes County - 1/2 inch of snow/sleet mixture in North Wilkesboro.

Winter Weather in WATAUGA, NORTH CAROLINA
From 04-APR-13 12:30:00 to 04-APR-13 17:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public observed 1/3 inch of snow/sleet mixture in the Sugar Grove area.

Winter Weather in WILKES, NORTH CAROLINA
From 04-APR-13 13:00:00 to 04-APR-13 17:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public observed around 1/2 inch of snow/sleet mixture in the North Wilkesboro area.

Winter Weather in ALLEGHANY, NORTH CAROLINA
From 04-APR-13 14:00:00 to 04-APR-13 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter observed 3.0 inches of snow in Twin Oaks.  The public reported 1 to 2 inches of snow from the Glade Valley area.

Winter Weather in SURRY, NORTH CAROLINA
From 04-APR-13 14:30:00 to 04-APR-13 20:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public observed a little over an inch of snow/sleet mixture around Ladonia.

Winter Weather in CASWELL, NORTH CAROLINA
From 04-APR-13 16:00:00 to 04-APR-13 20:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The Caswell County Sheriff's Office reported 1.0 inch of sleet/snow mixture in the Covington area.

Winter Weather in ASHE, NORTH CAROLINA
From 04-APR-13 12:30:00 to 04-APR-13 18:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public observed from 1/2 inch of snow in the Glendale Springs area to 1.0 inch in Fleetwood, to 2.0 inches just east-northeast of Jefferson.

Winter Weather in ROCKINGHAM, NORTH CAROLINA
From 04-APR-13 15:00:00 to 04-APR-13 20:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public observed just about 1/2 inch snow/sleet mixture in the Reidsville area.