After a near record high for Christmas Day around WNC, another front will bring rainfall to the area late this weekend and into early next week. The next threes days though (Thursday, Friday & Saturday) should be beautiful days with highs in the upper 50’s & low 60’s, so get out and enjoy them because a pattern change is coming. Below you can see the most recent Nam 3km temperature depiction for this afternoon (Thursday) and temps could push close to 60 degrees or even higher in some locations! The next two days will be choice days to take down Christmas lights!!
With highs expected in the upper 50’s and low 60’s it will feel very unseasonable around WNC! This theme will continue through Saturday. Then a strong low pressure will get its act together moving across the Midwest. As the pressure drops over the Great Lakes, severe weather could be possible late Sunday evening. In fact I wouldn’t be surprised to hear a few rumbles of thunder around WNC late Sunday. That will soon be followed by several individuals proclaiming that snow will follow in the next 10 days.
Heavy Rain Expected Sunday Night
As this low pressure deepens around the Great Lakes, the chances for severe weather around WNC will increase. Below you can see a depiction of what the most recent GFS shows timing wise when the system moves in. As you can see, this model shows the heaviest of rain moving in late Sunday evening and persisting through the early hours of Monday around WNC.
How Much Rainfall Is Expected?
Around an inch for most areas looks possible through Monday morning, but isolated locations in SW WNC like Murphy could see higher totals. As this front approaches from the Southwest, excesses moisture will be strained out along those SW WNC locations in the tip of NC. Below you can compare both the Euro and GFS precipitation totals through Tuesday. Both indicate around 1” of precipitation is possible.
From the images you can see that the GFS is somewhat more bullish on the amount of precipitation that will fall. The Euro orients the heaviest band of precipitation along the Blue Ridge Escarpment whereas the GFS orients the precipitation to move over the Murphy/Franklin area. Depending on where this strong banding sets up will determine who gets the most rainfall.
High Winds/Snow Showers Likely Above 3500’ on Backside
After this front passes, winds will really pick up and gust over 30mph in many locations around WNC. As the low pressure continues to strengthen over the Great Lakes, Northwest Flow moisture will begin to move into the higher elevations of WNC. This appears to occur late Monday night and into Tuesday Morning. There are still several details that will need to be hammered down to determine how much snow is expected for the higher elevations. I will also have to dive a bit more into the details over the next few days to identify if snowflakes will indeed make it to Asheville with this flow. Check back near the end of the weekend for another update!