Winter Weather Briefing 12/08/17 0700 (Sponsored By Me, You, and Some Glue

Good morning.  This forecast continues to evolve and we have made a slight uptick in forecast totals.  These are as high as we are willing to go with this storm because there will be rain mixed in below 1500ft.  However, overnight models have prompted a Winter Storm Warning for the Mountains of McDowell and Rutherford Counties.  All others are under an advisory.  Warning criteria in our area is 4 inches of snowfall.  While there are some signs we exceed that number there are also signs the boundary layer of warmer air may be stubborn to break down.  This process is going to have to be done through dynamic cooling.  Cold air aloft will be brought down to the surface thus cooling the column of air.  Right now wet bulb temps are above freezing area wide.  Wet bulb temp is a temperature where the air temp and dewpoint will meet and create 100% humidity.  The temperatures can never fall below the dewpoint.  As we go through the day our eyes will be on the wet bulb temps and this is now becoming a nowcasting event instead of a forecasting event.  Light precipitation is already developing.  The mountains have a coating to 2 inchs of snow already from Asheville and SW from there. 

 

Here are the 6:00am graphics

STORM OVERVIEW 0600.png
WWA 0600.png
 Cold front advancing a little quicker than earlier forecast. Low pressure tracking along the coast instead of out to sea.

Cold front advancing a little quicker than earlier forecast. Low pressure tracking along the coast instead of out to sea.

 Confidence of seeing snow.

Confidence of seeing snow.

 Didnt really see the need to move this to buy bread and milk because even though the roads will be bad tonight you will be able to get out by Saturday Afternoon.

Didnt really see the need to move this to buy bread and milk because even though the roads will be bad tonight you will be able to get out by Saturday Afternoon.

 Bumped totals up one inch.

Bumped totals up one inch.

Your next update will be 11:00am.

 

Chris White

Chief Meteorologist