From NWS RAH longer forecast...
Models have trended significantly slower with the trough, with a closed low even
developing and tracking to our south, helping a surface low deepen
off the NC coast. This would result in a wetter solution for our
region than previously thought, so bumped up POPs to chance during
this period. Northerly flow around the low and a weak high over New
England may result in temperatures cold enough for some snow or
mixed rain/snow. The 12z GFS is especially aggressive with depicting
this potential, but even the 12z ECMWF trended more in this
direction. Model soundings appear it would be more of question of
rain vs snow instead of ice. Almost half of 12z GEFS at least have
some measurable snow in some part of central NC, with less CMC
ensembles and only a small percentage of ECMWF ensembles showing it.
Uncertainty this far out is quite high, and would like to see more
consistency in the models. Even still, the latest model trends at
least justified introducing a chance of rain or snow in most places
Saturday night. Because of the uncertainty in the overall setup this
weekend, confidence in temperatures this weekend is low, but for now
forecast highs are slightly below normal.