Read through this thread has tons of information in there, also the link below that may help out some too.
I think you’re referring to the February 12, 2010 storm. That one was supposed to be completely an I-20 and south and then coastal sections of the Carolinas, then starting about 36 hours out the models really started expanding the snow back to the north and west to the point that about 18 hours out GSP issued WWAs for the SC upstate and southern NC Piedmont and then kept expanding them throughout the day before upgrading a large portion to WSW. I ended with just over 5” after not having anything forecasted 30 hours before. The funny thing is that I remember Frank Strait at Accuweather had been adamant all week that the snow would extend up to the I-40 corridor even though the models weren’t showing it
Yea, people get this confused sometimes, imo.
Likely tomorrow with the afternoon products.
The thing is even though there was less phasing on the Euro, the GFS is still trending more NW with the low and the precip and that is gaining support on the GEFS. More than likely we’re probably headed towards a blend of the Euro/GFS/CMC where there is still plenty of moisture back here to the west from overrunning to put down a decent snow with temperatures in the 20s, but the heaviest QPF is east of Hwy 1 where things are aided by the phase. The big question whether or the WAR plays nice and stays backed off to keep the warm nose at bay more
Yep, and precip shield is almost always more expansive to the NW than what is depicted on the models. Seent it many times.
Finally someone with some prestige said it. The term "nw trend" is so over used but rarely explained. More times than not it's only the precip field has expanded nw not the Low itself, although that does happen. Robert did a real good job explaining this back in the day when he hung out in these lowly forums before going big time. Thanks Burrel!