Precipitation began as light snow early in the evening across northern portions of the Upstate. By late evening, snow had mostly changed to sleet, except in areas along the North Carolina border. By the pre-dawn hours, total accumulations ranged from trace amounts of sleet near the I-85 corridor, to as much as 4 inches of snow along the North Carolina border.
The wintry mix persisted across northern portions of the Upstate overnight. In most areas, accumulations of 1-2 inches of sleet and snow (mainly sleet) occurred, with a tenth to a quarter inch glaze of ice occurring on top of the sleet and snow.  However, a small area of northern Spartanburg County saw more in the way of snow, generally 4-6 inches. Also, a small area of heavy ice accumulation occurred over the mountains of Greenville County, resulting in numerous downed trees and power outages.
Farther to the south, mixture of rain, snow, and sleet developed over the southern part of the Upstate and the northwest Piedmont of South Carolina. The precipitation continued off and on through the overnight, before changing to light rain or freezing rain during the morning of the 30th. Total sleet and snowfall accumulation ranged from trace amounts over the lower piedmont to a half inch closer to I-85. Light ice accretion occurred on the 30th, mainly on elevated surfaces.

Winter Storm in OCONEE MOUNTAINS, SOUTH CAROLINA
From 29-JAN-10 19:00:00 to 30-JAN-10 10:00:00 (EST-5)
Reported by: County Official

Winter Storm in GREATER GREENVILLE, SOUTH CAROLINA
From 29-JAN-10 18:00:00 to 30-JAN-10 10:00:00 (EST-5)
Reported by: County Official

Winter Storm in SPARTANBURG, SOUTH CAROLINA
From 29-JAN-10 18:00:00 to 30-JAN-10 10:00:00 (EST-5)
Reported by: County Official

Winter Storm in PICKENS MOUNTAINS, SOUTH CAROLINA
From 29-JAN-10 19:00:00 to 30-JAN-10 10:00:00 (EST-5)
Reported by: County Official

Winter Storm in GREENVILLE MOUNTAINS, SOUTH CAROLINA
From 29-JAN-10 17:00:00 to 30-JAN-10 09:00:00 (EST-5)
Reported by: County Official

Winter Weather in GREATER OCONEE, SOUTH CAROLINA
From 29-JAN-10 18:00:00 to 30-JAN-10 12:00:00 (EST-5)
Reported by: County Official

Winter Weather in GREATER PICKENS, SOUTH CAROLINA
From 29-JAN-10 18:00:00 to 30-JAN-10 12:00:00 (EST-5)
Reported by: County Official

Winter Weather in LAURENS, SOUTH CAROLINA
From 29-JAN-10 18:00:00 to 30-JAN-10 12:00:00 (EST-5)
Reported by: County Official

Winter Weather in UNION, SOUTH CAROLINA
From 29-JAN-10 18:00:00 to 30-JAN-10 12:00:00 (EST-5)
Reported by: County Official

Winter Storm in CHEROKEE, SOUTH CAROLINA
From 29-JAN-10 18:00:00 to 30-JAN-10 10:00:00 (EST-5)
Reported by: County Official

Winter Storm in YORK, SOUTH CAROLINA
From 29-JAN-10 18:00:00 to 30-JAN-10 10:00:00 (EST-5)
Reported by: County Official

Winter Weather in ANDERSON, SOUTH CAROLINA
From 29-JAN-10 18:00:00 to 30-JAN-10 12:00:00 (EST-5)
Reported by: County Official

Winter Weather in ABBEVILLE, SOUTH CAROLINA
From 29-JAN-10 18:00:00 to 30-JAN-10 12:00:00 (EST-5)
Reported by: County Official

Winter Weather in CHESTER, SOUTH CAROLINA
From 29-JAN-10 18:00:00 to 30-JAN-10 12:00:00 (EST-5)
Reported by: County Official

Winter Weather in GREENWOOD, SOUTH CAROLINA
From 29-JAN-10 18:00:00 to 30-JAN-10 12:00:00 (EST-5)
Reported by: County Official