Computer models are in good agreement that a storm system will develop in the Tennessee Valley Thursday and track towards the Washington, D.C. region Friday.

Next chance of accumulating snow: Friday

Probability of at least 1 inch: 30 percent

With cold air in place, snow and/or a frozen mix of precipitation appear to be a strong possibility, although there is a slight chance the storm cuts to the north, which would favor rain.

The European model shows sub-freezing temperatures and over 0.5” liquid equivalent precipitation falling Friday afternoon. That would equate to substantial snow accumulations if it’s right. (StormVistaWxModels.com)

But today’s models, compared to Sunday’s, track the storm farther south, which is more for favorable for snow. Today’s European model, for example, simulates a substantial amount of snow (over 4 inches if it were to verify).

Even in the rainy scenario (a track near or just to the north of us), at least a period of snow, sleet and/or freezing raining would be difficult to avoid at the onset of precipitation.

It’s too early to project snow and/or ice amounts, but stay tuned to future forecasts.

CWG’s winter weather expert Wes Junker will provide detailed analysis tomorrow.

(The Snow Lover’s Crystal Ball appears when there is at least a 30 percent chance of more than 1 inch of snow beyond 24-36 hours into the future.)