SHORT TERM /6 AM MONDAY MORNING THROUGH MONDAY NIGHT/...
As of 348 PM Sunday...
By Monday morning, colder air will have moved into the region, and
the atmosphere will cool off enough to support snow in addition to
rain as the surface low and upper level low reach central North
Carolina and continue to push to the northeast. The hardest question
to answer will be determining where snowfall rates are high enough
to overcome the very warm ground temperatures in the 50s and 60s,
considering temperatures have not fallen below freezing in the last
week. While snow will melt on contact with a warm surface, a strong
enough snowfall rate would be able to overcome the warm surface and
allow for accumulation to begin. There is no good way to quantify
this. The current forecast calls for snow to fall as far south as US-
64 and as far east as I-95, although there will be many locations
that have a mix of rain and snow. The bulk of the accumulating snow
should be located north of I-85 and occur during the morning hours.
Considering the uncertainty of snow accumulation due to the warm
ground, have decided to be conservative with coverage of a Winter
Weather Advisory, and with the afternoon package will only issue an
advisory for Person and Granville Counties, climatologically favored
locations for snowfall. Later shifts will have the opportunity to
decide if they want to expand the advisory area.