RAH Disco
The next s/w projected to lift newd out of the l/w trough late
Thursday, crossing our region by Fri morning. After the relative
lull in precip Thursday, expect areas of precip to regenerate across
our region, especially overnight Thu night into early Fri. Precip
will initially start out as rain, but could see a transition to a
rain/snow mix after midnight over the NW Piedmont as the column
aloft continues to cool, and lift becomes stronger in the favored
dendrite growth zone. Where heavier precip rates occur, could see a
brief burst of snow, though warm ground temperatures will cause any
snow that accumulates to quickly melt. Appears the rain/snow mix
will remain confined primarily across the NW Piedmont through mid
morning Friday, afterwhich the boundary layer may warm enough to
cause the mixture to go back to all rain. As night approaches
Friday, and the s/w begins to exit our region, another surge of low
level cold air will overtake the region. This will lead to a
rain/snow mix to overspread central NC Friday night, with the precip
ending as a little light snow across the Piedmont. Precip rates at
this time appear too light and the ground temperatures relatively
too warm to support nothing more than a dusting, if that. Across the
coastal plain, light rain may end as a rain/snow mix late Friday
night. High temps Friday will only warm to near 40-lower 40s. It's
possible some locations across the Piedmont may stay in the 30s.