I haven't seen much change in the 00Zs from what I looked at yesterday. A low pressure system will come on shore today in British Columbia. It will ride the northern stream across the plains creating a swath of snow along it's path with the mid-west getting a decent amount (8"+)
With a split stream the energy does not dive down, and simply rides across the US and exits on the east coast.
The question is path and if we can squeeze any snow out of it along the way. I'll update pics below after the 12Z runs today, but in looing at the 12Z NAM it looks fairly similar (minor differences, nothing to generate any excitement) to its predecessor runs, so for now it's pretty much the same picture. (early look at NAM has a broader area of snow, but less N&W than the 00Z run)
There are a couple of things tugging at the energy (upper levels in CA), including the fact that it has to cross the Applachians, which will carve it up a bit, so it loses steam as it travels.
For now it looks like a light event for Philly and surrounding burbs. Possibly more N&W depedning on the amount of steam it loses as it crosses the apps.
01-04-15 12Z NAM and GFS #s
|Location||12Z NAM||12Z GFS|