The potential for significant snowfall accumulations across the triangle is increasing. A moderately strong low pressure system will develop along the gulf coast and transition off the southeast Atlantic coast Wednesday night. In the mean time the arrival of cold arctic air today, currently in place and the cause of the today's accumulating snowfall, will remain in the area, albeit dampended, overnight Wednesday. Models are now converging on a wetter solution. The potential for heavy snow exists within the triangle area with an isothermal layer potentially developing near the surface. An isothermal layer is a vertical column of at freezing air caused by the dynamics of the falling snow. It's still too early to tell where any heavy banding will set up. But the presence of an isothermal layer along with the presence of strong snow flake growth in the upper levels of the atmosphere often equates to large snow totals.
So right now I think it's safe to go with 3-5 inches of snow for the triangle. Sleet and rain mixing in with the snow could certainly be an issue and I've included that possibility in my accumulation forecast. If the precip does stay all snow and if the wetter trend continues then the triangle could potentially get close to ten inches.
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