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Pattern Jan 2025 Powered by Rheem AC

The upcoming pattern doesn’t look good for the interior southeast for winter weather with that much cold air coming down. Regardless, the cold is going to be brutal for a few days especially for folks that have to work outside like powerwashers and landscapers.
 
Yeah, why i don't like the very cold air. Seems we do better with snow when we're right on that line with it being cold or not cold enough.

Exactly. I'm actually tired of our setups being so cold here because yeah that's probably why we haven't had a good snow in 3 years. I think it's all connected

Give me marginal temps any day
 
We’ve got roughly 200+ hours, and about 90-100 model suites to sift through before we’re close to the favorable timeframe for something to happen. I for one am trying to be patient as possible. We’ve haven’t seen a pattern like this in quite awhile. My eyes are getting sore and need relief.


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I've heard for years get the cold in first but all that's ever give me is cold and dry. Give me a banana high that I can tap into and I'll take my chances all day long. It's always threading the needle. That's an understatement.

Yeah I mean I know Tulsas biggest snowstorm on record came after a heat wave.... I know the biggest snowstorm in Dallas was with temps at 33-34 degrees... In Alabama it was in Mid March!

I'm noticing a trend here
 
Yeah I mean I know Tulsas biggest snowstorm on record came after a heat wave.... I know the biggest snowstorm in Dallas was with temps at 33-34 degrees... In Alabama it was in Mid March!

I'm noticing a trend here
The 2 biggest snows I've seen in Georgia were in December and March. Seems like the heart of winter is less likely to have a big snowstorm.
 
With big arctic shots you have to correctly time a wave -- as the cold press is inbound or outbound or temporarily oscillating around the area. The exception to this is with an active STJ, which we don't have now.

The advantage we *appear* to have is a long period of cold to very cold and also a very well-placed ridge/block in the NAO space. This can slow the flow and allow more room for amplification of a wave or more time for two waves to interact or potentially phase. It's why a properly configured -NAO is so important for us.

In many of our cold and dry arctic outbreaks, we're missing something. Care to guess what that is? If you said a properly placed, strong -NAO, you'd be correct.

We're absolutely going to see some bangers show up at some point. Just wait for it.
 
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Almost half of the 20 member CMC suite shows the gulf to east coast system in 10 days, a couple of members wait a day or two later and develop a system. All that being said, ingredients are there.


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With big arctic shots you have to correctly time a wave -- as the cold press is inbound or outbound or temporarily oscillating around the area. The exception to this is with an active STJ, which we don't have now.

The advantage we *appear* to have is a long period of cold to very cold and also a very well-placed ridge/block in the NAO space. This can slow the flow and allow more room for amplification of a wave or more time for two waves to interact or potentially phase. It's why a properly configured -NAO is so important for us.

In many of our cold and dry arctic outbreaks, we're missing something. Care to guess what that is? If you said a properly placed, strong -NAO, you'd be correct.

We're absolutely going to see some bangers show up at some point. Just wait for it.

Yeah I will say one positive this year vs the last two winters is there's gonna be multiple windows

I mean it was so bad last winter if it didn't snow within 3 hours you were cooked for the entire event
 
Yeah, why i don't like the very cold air. Seems we do better with snow when we're right on that line with it being cold or not cold enough.

I agree to a point. I don't ever want to be on the line. But artic outbreaks and super blocks can crush systems and we end up dry. That's a possibility here. We do best IMO when we have solid cold to our NE and we CAD with a high in NY. That's been our mechanism forever to get frozen in the piedmont, and we end up Miller B.

Always run the risk of dry with Artic outbreaks.
 
With big arctic shots you have to correctly time a wave -- as the cold press is inbound or outbound or temporarily oscillating around the area. The exception to this is with an active STJ, which we don't have now.

The advantage we *appear* to have is a long period of cold to very cold and also a very well-placed ridge/block in the NAO space. This can slow the flow and allow more room for amplification of a wave or more time for two waves to interact or potentially phase. It's why a properly configured -NAO is so important for us.

In many of our cold and dry arctic outbreaks, we're missing something. Care to guess what that is? If you said a properly placed, strong -NAO, you'd be correct.

We're absolutely going to see some bangers show up at some point. Just wait for it.

One thing I love about the 200-300hr range of the Euro is how much upper level moisture is pooling right at the gulf coast. It may change, but most of the time in these massive cold blasts, the gulf is scoured. Not so here.
 
What a nightmare to forecast lol View attachment 157807
All that's needed is a little more energy rotating around the western periphery of the vortex during the period below to suppress the height field some. That in tandem with the continued further south trend of entry point into the western U.S. would do the trick. The surface low would then track along the Arctic front to the south near the Gulf at that point. It's one reason I've highlighted this period all along combined with the -NAO in place.
ecmwf-aifs-all-namer-vort500_z500-1735560000-1735992000-1736121600-20.gif
 
With big arctic shots you have to correctly time a wave -- as the cold press is inbound or outbound or temporarily oscillating around the area. The exception to this is with an active STJ, which we don't have now.

The advantage we *appear* to have is a long period of cold to very cold and also a very well-placed ridge/block in the NAO space. This can slow the flow and allow more room for amplification of a wave or more time for two waves to interact or potentially phase. It's why a properly configured -NAO is so important for us.

In many of our cold and dry arctic outbreaks, we're missing something. Care to guess what that is? If you said a properly placed, strong -NAO, you'd be correct.

We're absolutely going to see some bangers show up at some point. Just wait for it.
when all of your energy is coming from the northern stream it’s tough to get that high pressure to slide in place to the east and dam up beside that 50/50 low. It’s just a jumbled up mess of energy dropping in off the northern stream.. the tough part is that’s what’s bringing the cold down but it’s also what’s making it difficult. Double edged sword. We really need something to dive in and dig not just to our west but to our south and west. (Or getting some separation between waves could work) But with what we’re seeing modeled the odds are still very high for us relative to what we’ve seen over the last several years
 
All that's needed is a little more energy rotating around the western periphery of the vortex during the period below to suppress the height field some. That in tandem with the continued further south trend of entry point into the western U.S. would do the trick. The surface low would then track along the Arctic front to the south near the Gulf at that point. It's one reason I've highlighted this period all along combined with the -NAO in place.
View attachment 157808
There's plenty of time for that to occur but seemingly it has adjusted north now?
 
Just keeping it 💯 the Euro AI has been wanting to breakdown the Greenland Blocking out at range in recent runs. I bring it up because it was one of the first models to really latch on to the idea of a strong block. In addition, the Strat PV is quite strong right now. Having a long duration -AO / -NAO event is more challenging when the Strat PV is in that state

On the flip side, the Pac Jet on the AI shows no fading as it continues to pump out to Hawaii.

So maybe we go from +PNA/-AO/-NAO 2nd week in Jan to -EPO/+PNA/ Neutral AO & NAO mid-Jan. Both could offer opportunities, maybe great ones

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Got Raleigh attention in AFD ..

"Late Sunday night though Monday a deep trough will move through the
region, bringing the next chance for precipitation. It is currently
unclear how much/if any of the precipitation will be frozen as
models differ in timing and temperatures. However, this appears to
follow a Miller B type pattern, which can be conducive to frozen p-
types in our northern counties, so a chance of freezing rain and snow
were introduced mainly from 6-12Z early Monday morning, but as
models come to better agreement this is likely to change. Any frozen
precipitation that does fall is likely to be very short lived"
 
Got Raleigh attention in AFD ..

"Late Sunday night though Monday a deep trough will move through the
region, bringing the next chance for precipitation. It is currently
unclear how much/if any of the precipitation will be frozen as
models differ in timing and temperatures. However, this appears to
follow a Miller B type pattern, which can be conducive to frozen p-
types in our northern counties, so a chance of freezing rain and snow
were introduced mainly from 6-12Z early Monday morning, but as
models come to better agreement this is likely to change. Any frozen
precipitation that does fall is likely to be very short lived"

I agree with this last statement overall. The circulation pattern is pulling its weight here & is more than sufficient for a storm, but the low-level air mass & upstream surface high are dragging their feet.
 
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