Cold Wedge Affects Nasty Storm
The Southern Appalachians and adjoining Piedmonts could be in for a significant ice storm Thursday into Friday. Moisture will ride up and over a wedge of cold air (shown below). At the narrow end of the wedge, the rain will not have enough time to freeze when it falls through the shallow layer of cold air, but it will freeze on contact with the ground in areas where the temperature is below 32. Further north, where there is a deep enough layer of cold air to freeze the precipitation, most of it will fall in the form of snow.
Ice Explainer Dec. 15, 2005
Some previous incredible ice storms include:
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The forecast for this week's storm is particularly tricky because it actually involves two storms. One is forming over Texas today and another is moving in from the Great Lakes. How these two interact will ultimately determine precipitation types and accumulations. More information is available in our Weather Headlines (PREMIUM | PRO) and Breaking Weather News Page.
Forecast Dec. 15, 2005
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