A Winter Storm WARNING is in effect through Wednesday evening. The stage is set for a major winter storm to move through the Carolinas over the next 24 hours. Cold air is pouring in from the north while deep moisture is streaming in from the south and that means a mess for the Carolinas.
Precipitation will become more widespread and heavier through the evening. Tuesday night, snow, sleet and freezing rain across the Pee Dee, becomes all snow especially west of I-95. After 4am, freezing rain along the Grand Strand will change to snow before ending around daybreak.
While plenty of cold air will be in place at the surface, a layer of warm air a few thousand feet up will work inland off the ocean. As snow falls into the warm layer, it melts. Water drops then fall into cold air below and refreeze as sleet or freeze on contact with the ground (freezing rain). This layer of warm air is more pronounced and will move deeper inland than the models showed yesterday. That means less snow and more sleet and freezing rain.
SNOW AND SLEET ACCUMULATIONS will be highest along and west of I - 95.
4" - 6" Lumberton, Red Springs, Laurinburg, Bennettsville, Hartsville & Darlington - Mix of snow and sleet
2" - 4" Florence, Marion, Mullins, Dillon, Lake City & Johnsonville - Mix of snow, sleet and freezing rain
1" - 2" Kingstree, Conway, Aynor, Green Sea, Carolina Forest, North Myrtle Beach, Socastee & Surfside - Mainly freezing rain, sleet with some snow at the end
0" - 1" Murrells Inlet, Pawleys Island & Georgetown - Mainly freezing rain with some sleet and a little snow at the end
FREEZING RAIN ACCUMULATIONS will be highest along the Grand Strand.
.50" - Little River, North Myrtle Beach, Myrtle Beach, Socastee, Carolina Forest, Surfside, Murrells Inlet, Pawleys Island, Georgetown, Longs, Loris, Conway and Andrews
.25" - .50" Aynor, Kingstree, & Green Sea
.10" - .25" Florence, Lake City, Johnsonville, Aynor, Marion and Mullins.
.25" - .50" of ice will cause major icing issues on roads and especially overpasses. Additionally, the weight of that much ice on tree limbs and power lines will cause scattered to widespread power outages.
Regardless of whether you get ice or snow, this has the potential to be a crippling event. Keep in mind too that it will be windy and cold through Thursday. Temperatures at night will fall into the the teens and 20s with highs in the 20s and 30s. Whatever falls will stick and be around for quite some time.