wxguy25 wrote:wxguy25 wrote:adelphi_sky wrote:Any cold air damming scenarios playing out for the DC area?
Yes. The Low level Arctic Air isn't going anywhere w/ the high in position over Ontario. the WAA won't be able to take it out below ~950 or 960mb probably.
that as you know would result in an icing situation. A possibility that **IF** the Euro from this afternoon is on the right track---is an option we would have to really consider and explore in greater detail
I still have a problem WRT to the rollover effect on the HP in Eastern Canada, nosing down, that the clipper system is portraying with the dive to the SE, and furthermore, this again is arctic air with extremely dry TD's. I don't believe at all that the HP will scour out as readily as the guidance is portraying and furthermore, I believe a good portion of South Carolina has an icing problem by the time this all comes to fruitation ... (dry slot saves/screws many in the lower Carolinas, as usual) ...
with an immense 50/50 low or shall we say, a PV extension, so to speak ... I just don't see how SLP can move thru the "cold dome" so readily and easily, especially dealing w/TD's likely in the single digits or even BLO ZERO ... not only are we dealing with a wedge configuration, but evaporational cooling to only further enhance the wedge once the precip gets going ...
SF