RAH point forecast for Greensboro still calling for all snow (5.5" on the hourly graph). But the discussion acknowledges the ice threat:
Saturday night, little rain is expected. The bulk of the
precipitation will fall as snow overnight, with sleet/freezing rain
eventually mixing in across the south as warmer air begins to move
in aloft. The push of warm air begins in earnest after sunrise
Sunday, which should limit the areal extent of snow by Sunday
afternoon. Rain will eventually make its way in along the I-95
corridor, but farther to the west, sleet and/or freezing rain will
be the dominant precipitation types, depending on the depths of the
warm layer aloft and cold layer at the surface. The GFS and European
are now in better spatial agreement with the dry slot moving
directly across central NC, reducing the potential for wraparound
snowfall Sunday night, although the ECMWF is now about 6 hours
slower than the GFS.
A few days ago, this system looked as if it would simply be a
rain/snow event. Over the last 72 hours, the westward trend of the
surface low moving farther inland makes a widespread significant
icing event appear more and more likely west of I-95.