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February Pattern and Storm Discussion


POWERSTROKE

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^

 

We'll see a bomb during March Madness in Gator Country.

 

Dadgumit - snow in the Rowdy Reptiles.

 

In all seriousness -

 

2 days ago, GFS was back to several nights of below 30º; now seems to be backing off.

Euro still shows some well below numbers,showing some dp's 40 close to Miaimi,that should be well below norms

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^

 

We'll see a bomb during March Madness in Gator Country.

 

Dadgumit - snow in the Rowdy Reptiles.

 

In all seriousness -

 

2 days ago, GFS was back to several nights of below 30º; now seems to be backing off.

I'm betting pretty far down there will see  some flurries over the next few weeks if the weeklies are pretty good at sniffing things out.  I think by Wed we'll have a lot better idea of how cold we'll be seeing it, unless bizzaro's anti forecast works out for him, lol.  T

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Anything down here past 2/28 is a freak - but it has happened.

 

18Z isn't making me "freak out" (yet) - though at 2 M it is still warmer than 12Z, which was warmer than 6Z, which was warmer than 0Z .....

 

I hope you are correct: I'm betting pretty far down there will see  some flurries over the next few weeks if the weeklies are pretty good at sniffing things out.

 

Beer's on me if so!

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Have to admit its hard to complain after spending the entire day stuck on 34-35 degrees and watching it rain. I long for days like this during July and August, way better deal IMO. I've had 2 separate occasions in this past week of seeing frozen precip. Last Saturday it snowed for almost 7 straight hours and I have zero accumulation from both events. Next opportunity is all but about 65 hours away. 21 z sref basically has a redux of the current event, except it should yield better results for the mtns and northern foothills possibly. Font end mix , to freezing rain to cold rain. Then the big March in like a lion pattern should unfold. I have to admit the configuration of the axis that sets up is gonna be the deciding factor of cold/dry v/s big ticket storm. I just hope after waiting 2 years it produces. Been a fab feb temp wise as we will come in below normal at Greensboro for sure now and could have got our annual Feb snow if it would have stuck last Saturday.

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0ZNAM out to 72 right in line with 21z serf. Looks like it could put down a inch or 2 in mountains and northern foothills. I'd be a whole lot more interested in this event then the current one from last night. Watch the trends on 850 s over the weekend. Lot more qpf with this one if you can get the cold to work in your favor

Edit go check out the accumulated 84 hour snow map 1 foot plus in the mtns. They mix with ice at the end of the run.

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I can see the bust potential too but I can also see it verifying. 50/50...CFSV2 has been out to lunch this winter so not sure what to believe.

 

It has been super wet that even the hard struck drought areas are seeing major improvement. I can see it being dry for 2 weeks in March for some here.

 

602164_413784612047872_1735097317_n.jpg

 

Please specifically expound as to just HOW out to lunch the CFS has been...It's prog for the ending weeks of January weren't too far from reality, as I recall.

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The event early next week could be similar to this last one...maybe a touch warmer.  You want to see good confluence in the NE, a strong signal for cold HP, and a very cold air source from which cold, dry air can be advected in.  Most of those elements are not modeled to be in a state that would favor anything more than another nuisance event.  The way it looks now, it will be another cold rain event for most.

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Just don't see any strong signal on any of the models for a snow in March before the warm-up after the 15th which is likely to occur in a quick change scenario

 

Talk about long range...

 

Look for the signals that show up for 3-5 days out.  That's where your statistical money should be.  It shouldn't be a concern to not see signals almost 1 month from now.

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0ZNAM out to 72 right in line with 21z serf. Looks like it could put down a inch or 2 in mountains and northern foothills. I'd be a whole lot more interested in this event then the current one from last night. Watch the trends on 850 s over the weekend. Lot more qpf with this one if you can get the cold to work in your favor

Edit go check out the accumulated 84 hour snow map 1 foot plus in the mtns. They mix with ice at the end of the run.

 

The computer generated snowfall maps are based on some pre-set algorithms that are not really valid for this event.

 

Mixed precip should just cause light accumulations for mountains/foothills if it is cold enough.

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Yep nam crushes the northern mtns. I wish I could post the clown map for you guys. Worth a road trip if that verefies

 

 

 

NCSNOW, I'll help us out in this category, but you weren't kidding either.  Wowza!  There is a ton of precip progged on this latest run of the NAM, winter or otherwise.  I think this one actually has potential for the NW piedmont as well.  Time will tell...

 

Here's the snowfall map at 84 hours:

 

3Yx5oQT.gif

 

And here's the 72 hour precip at 84 hours:

 

LVuiUVm.gif

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Folks,

 Per the 18Z Goofy per MeteoStar, the average temp. for KATL for 3/1-5 will be 36 F. Now, I fully realize that the GFS has a cold bias. However, in this case, the blocking is so impressive and the models have been so consistent that I can believe this 36 as a legit.possibility. A 36 F would be a whopping 6 F colder than mid Jan! It is 15 F below normal. Also, KATL's coldest day to this point was 2/17's 36! Even if this run were 4 F too cold, it would still be a cold 40 F, which is 2 F colder than mid Jan.'s norm.

 

 How cold would 36 F be in relation to history at KATL?

 

- Since 1930, only one 3/1-5 was colder: the 28 F of 1960. 1960's 3/1-5 had a major ZR as well as 0.8" of S.

 

-Tied for 2nd were four cases of 37's: 1943, 1975, 1978, and 1980. An impressive two of those 3/1-5's produced measurable snows: 1943 (0.4") and 1980 (2.7"). 1978 produced a T. 1975 had no S.

 

-Tied for 6th at 38 were 1947 and 2002. 1947 had two days with T's. 2002 had none.

 

-Tied for 8th at 39 -were 1942 and 1962. 1942 had a major (3.7") whereas 1962 had two T's.

 

-Tied for 10th at 40 were 1930 (none), 1954 (none), and 2009 (major of 4.2").

 

 So, to summarize, the coldest eleven 3/1-5's since 1930 at KATL, whose values ranged from 29 to 40 F, had multiinch S 3 of the 11, measurable S 5 of the 11, at least a T of S 7 of the 11, and major ZR once. So, 4 of the 11 had either a major ZR or a multiinch S. Those are pretty respectable odds for just a five day period.

 

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