This won't be an in-depth post. Kendra & Alex have kept you up-to-date with what could be one of the most powerful storms in U.S. history. We are talking about a RARE occurrence. The event of a strong tropical system becoming post-tropical and then merging with a strong, negatively tilted upper-level system cruising along in the polar jet stream. This interaction or phasing with both systems coming together looks like it will produce a damaging storm over the northeastern U.S. close to halloween and send gusty winds/chilly air into our area.
For us, I will go over the cooler air mass expected here, the wind and what will probably be high mountain snow in a few sections north and northeast of Asheville near Boone, NC.
Latest on Sandy: As of early afternoon Thursday, Sandy has regained some organization after moving off of the coast of Cuba and looks very healthy. Click http://www.nhc.noaa.gov/ for the latest on storm position, pressure and the top winds within the center of circulation. A satellite image of the storm is posted to the right along with a map of a projected landfall somewhere close to Long Island, New York.
Impacts for Us: The bottom line is that our "comfortable conditions party" is going to come to an ABRUPT conclusion sometime late Sunday or Monday. The timing depends on the movement of the storm and how quickly it makes landfall across the northeastern US.
Day-time temperatures in the 50s for Upstate towns and 40s for Western NC will be common Monday, Tuesday and Wednesday with breezy weather all three days. Overnight lows in the Mountains will dip into the upper 20s and low 30s while Upstate lows will fall into the middle-upper 30s, but should stay above the freezing mark because of a sustained breeze. Also, I think overnight lows will get to 32° across the Upstate early Thursday morning and possibly early Friday morning once the breeze goes silent under a clear sky.
NC High Mountain Snow Likely: As the powerhouse storm moves inland, the circulation around it will deliver north to NNE winds over the high mountains of Western NC to the north of Asheville mainly close to Boone, NC and also near Mt. Mitchell. These are will likely see some snow squalls or snow showers around late Monday and Tuesday as 5000ft temperatures drop several degrees below freezing and the air is forced to rice to the top of northward-facing slopes.