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Pattern December to Remember

Larry, save this reply because it may be used later. If the alutian ridge dont shift east, if we dont get a -nao that more central or west based, and dont get the mjo orbit, we will get glancing blows and no real cold that lasts more than what we have seen. It will be chasing unicorns unfortunately

The fact that there are always “what ifs” is what imo makes for great forecast discussion threads.
 
Very frustrating storm for the Triangle. Snow just fizzled and died as it moved east like it hit a wall. I would still take that pattern in a heartbeat and take my chances the second time.
If I remember correctly, the short term models… mainly the NAM and SREF did horrible with that storm up your way. It kept showing that the heavy bands that had come across north GA, SC upstate and southern NC Piedmont and Foothills would hold together… instead the energy was transferring to a coastal low and it just ended up being too far offshore to help you guys.
 
Stepping away from pattern discussion to an observation from earlier today which was cool, at least to me.

Traveled from Cherokee, NC to Cades Cove this morning … 7 to 9:15 or so. Temps in Cherokee ranged anywhere from 28-31 or so with very heavy frost. Across New Found Gap, temps were up to 40-41 - no frost- and heading into Cove, back down into low 30s with very heavy frost.

Great illustration how colder, heavier air sinks or seeps into valleys. I know it is not unusual, just cool to note.

Hoping we see some winter weather soon!
 
JB mentioned in a tweet earlier that similar to 13 14 could be on the way. I would go streaking in front of his house singing Feliz navidad if that came close to happening this winter. That's how confident I wont have to do that

That means he is suggesting that a PV disruption could happen, which is true. A PV disruption could be imminent sometime in early/mid Jan.

The fact that there are always “what ifs” is what imo makes for great forecast discussion threads.

Exactly, the "what if's" layout endless possibilities, in depth discussions and can help determine the best possible outcomes.


I like it - it's getting better. We won't know how exactly this will turn out until it's in the 5 day window or less. CAD events can be very difficult to forecast in advance because of mesoscale features (particularly temp. profiles) that can't really be narrowed down precisely on non-mesoscale models. Mesoscale models are on a much higher resolution, so the CAD can be underestimated on the non-mesoscale models in advance.
 
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