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Pattern Freezing Ferocious February

Even if this winter were to end right now, it really hasn't been all that bad in NC. We've seen virtually every type of winter storm here in NC, a classic "piedmont gradient" storm, an ice storm, a few token events, and a storm that clobbered the central-eastern piedmont bringing RDU ~6" of snow, and at least one significant storm (or more) has occurred in December, January, & February. Plus our temps thus far this winter have been below normal, can't really complain. I'd be content with us switching into tornado season right now. One more big dog in late February or early-mid March would turn this into a legendary winter for a good portion of east-central NC, the likes of which we haven't seen on a regular basis since the 1960s.
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One more storm here of a few inches pushes this winter into legendary status here.
 
I dug up some old pictures from February 2015.

Here’s the first storm of 3 inches on the 16th. Don’t let the grass in the yard showing fool you. I had a broken lawn mower and the grass got ridiculously long before winter started.

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Here’s 2 days later on the 18th after a super cold clipper dropped a few more inches.

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And then freezing rain on top of the snow 5 or 6 days later.

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And the final storm on March 5th

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HM injects some serious hope especially for Mid-Atlanic & NE US weenies. The upper south isn't out of the game in late February/early March if we get a legit -NAO triggered by this PV split in concert w/ extremely intense tropical forcing

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February 2015 was the greatest February I’ve ever experienced winter weather wise in my 12 years of living here. Leading up to the 16th we had nothing but a few dustings. That all changed in mid February as my backyard personally saw 3 snows of 2 plus inches with two of them at at least 4 inches and one freezing rain event all in a matter of 3 weeks time. I actually had 2 inches of snow fall on top of 3 inches of snow that had fallen 2 day’s earlier to give me my first 4 inch snow. Then we had freezing rain fall on top of that a few days later. We had a lot of sleet with the first storm which kept the snow on the ground for 2 weeks combined with the cold temps. When it was all almost gone we got dumped on with 4 more inches of snow on March 6th I believe. Portland Tennessee which is a ten minute drive north of me managed all snow for the first storm and pulled off 9 inches of it to my 3 because of so much sleet in my area. I’m also certain parts of north eastern Tennessee got a devastating ice storm during this time period.

February 2015 was pretty good for places in North AL/North GA (and yes, the caveat I mean North of Atlanta metro) and North Carolina but it seems like it was really epic north of there.
 
Even if this winter were to end right now, it really hasn't been all that bad in NC. We've seen virtually every type of winter storm here in NC, a classic "piedmont gradient" storm, an ice storm, a few token events, and a storm that clobbered the central-eastern piedmont bringing RDU ~6" of snow, and at least one significant storm (or more) has occurred in December, January, & February. Plus our temps thus far this winter have been below normal, can't really complain. I'd be content with us switching into tornado season right now. One more big dog in late February or early-mid March would turn this into a legendary winter for a good portion of east-central NC, the likes of which we haven't seen on a regular basis since the 1960s.
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If we get one more good storm. If not, it has really only been average for me with 6 inches of snow and only one good storm. I do not see me getting another one, either.
 
Feb 2015 was one of those month where you had to be north of I-20. Those of us south of I-20 didnt see a flake.

Uhhh really at least in Georgia try north of I-85 and with the big dog snow of the month, not in Atlanta proper or on a latitude. But of course I view that month differently as I was still someplace else and I may still have even if I wasn't due to close family that is there.
 
February 2015 was pretty good for places in North AL/North GA (and yes, the caveat I mean North of Atlanta metro) and North Carolina but it seems like it was really epic north of there.
Yes it was! I had just moved into my house in Cherokee at the beginning of that month and we had the snow come through. Come to think of it, it has snowed several times here every winter since I have been here. I love it here.
 
Tonight's temperature forecast, especially north of Atlanta has busted pretty bad already. Forecast low for me was 34, currently 29.2. Forecast high for tomorrow has also been lowered to 51 from near 60 earlier. Woohoo! lol
 
Chattanooga hasn't got squat this year, snow or rain. Well looks like we'll get some rain this week.

That early Dec. storm really had a sharp gradient that is striking in the Tennessee Valley which you can tell from the NOAA maps (and what I found when I was traveling). Like even sharper than 2/25/15. Some of the southern areas of it saw 2 maybe a little more inches of snow and then you could've driven 10 miles north...dusting...20-30 miles south, buried.
 
Tonight's temperature forecast, especially north of Atlanta has busted pretty bad already. Forecast low for me was 34, currently 29.2. Forecast high for tomorrow has also been lowered to 51 from near 60 earlier. Woohoo! lol

looks like its spread east lol

I'm still trying to figure out how we went from a Euro forecast of 80 degrees, talk of severe weather, to now possibly a winter storm(or at least a very cold rain) all for tomorrow
 
looks like its spread east lol

I'm still trying to figure out how we went from a Euro forecast of 80 degrees, talk of severe weather, to now possibly a winter storm(or at least a very cold rain) all for tomorrow

Right! I have a funny feeling someone’s gonna be in for a surprise in the next few weeks. Looks like you may be the first one lol.


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Right! I have a funny feeling someone’s gonna be in for a surprise in the next few weeks. Looks like you may be the first one lol.


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the first surprise was when I walked out at work last night and it felt like I was back in Chicago after being 65 and sunny 3 hours earlier :eek:
 
I would rather snow or ice delay my house getting built than rain rain rain... I'm dying here.
 
That early Dec. storm really had a sharp gradient that is striking in the Tennessee Valley which you can tell from the NOAA maps (and what I found when I was traveling). Like even sharper than 2/25/15. Some of the southern areas of it saw 2 maybe a little more inches of snow and then you could've driven 10 miles north...dusting...20-30 miles south, buried.
We were in ATL on the southeast edge of that gradient. Cold rain with a few flakes that didn't accummulate. Drove a few miles NE of our location and the snow was falling. That was so incredibly disappointing.
 
Low predicted for today was 37, nope actually 30. May still hit 68 but it's going to have to haul butt to get there (and it can as I've seen it do it).

And GFS 2 meter air temperature had me at 45 with early in the morning, hahahaha 45 in what world.
 
We were in ATL on the southeast edge of that gradient. Cold rain with a few flakes that didn't accummulate. Drove a few miles NE of our location and the snow was falling. That was so incredibly disappointing.
Yeh I think a lot of people assume the whole city got hit with that early Dec storm but a lot of people were disappointed from what I hear.
 
The model consensus is predicting nearly an all out torch for much of the SE US over the next 15 days averaged out. MDA mets for the next 15 days have Birmingham averaging +3, ATL and RDU averaging +4, and SAV/GNV averaging +6 to +7! Get ready for early bugs and pollen, especially more SE/E parts of the SE.
Meanwhile, Brent in Dallas is forecasted to be nearly 2 colder than normal averaged out over the next 15 days. Memphis is right at normal.
 
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The model consensus is predicting nearly an all out torch for much of the SE US over the next 15 days averaged out. MDA mets for the next 15 days have Birmingham averaging +3, ATL and RDU averaging +4, and SAV/GNV averaging +6 to +7! Get ready for early bugs and pollen, especially more SE/E parts of the SE.
Meanwhile, Brent in Dallas is forecasted to be nearly 2 colder than normal averaged out over the next 15 days. Memphis is right at normal.
I liked, but really don't ... ;)
BTW - pollen here has gone insane already ... :(
 
Waiting for the Judah Cohen PV split. The split should be complete by this weekend . We shall see if it has any downstream impacts

Is it possible that the SE tends to be warmer than normal just in advance, near, and just after a PV split regardless of the final downstream effects? I don't know but I'm just throwing this out there for discussion.
 
The model consensus is predicting nearly an all out torch for much of the SE US over the next 15 days averaged out. MDA mets for the next 15 days have Birmingham averaging +3, ATL and RDU averaging +4, and SAV/GNV averaging +6 to +7! Get ready for early bugs and pollen, especially more SE/E parts of the SE.
Meanwhile, Brent in Dallas is forecasted to be nearly 2 colder than normal averaged out over the next 15 days. Memphis is right at normal.

Pretty classic late-winter NINA response but winter may not be done quite yet, we'll be headed towards the canonical cold phases of the MJO late in the month and March and we'll see blocking begin to appear over the far North Atlantic (-NAO) in response to the PV split's generation of equatorward propagating -AAM and very intense tropical forcing from the Pacific which will create a Rossby Wave train that will shut off the tap on the downward WAFz from the NP that's been reinforcing the +NAO of late.
NINA climatology also is generally more conducive to cold & snow for the upper south in March than February at least vs normals. All of these events listed below occurred in a La Nina event (1967-68 met the CPC criteria using my ENS ONI index table).
March 11-12 2017 NC Snowmap.png
March 1-2 2009 NC Snowmap.gif
March 21 2001 NC Snowmap.gif

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March 25-26 1972 NC Snowmap.png
March 25-26 1971 NC Snow map.png
February 29-March 1 1968 NC Snowmap.png
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March 10-11 1934 NC Snowmap.png

March 17-19 1893
Raleigh 2.1"
Norfolk, VA 1.0"
Charlotte T
Asheville T

March 7-8 1890
Raleigh 1.2"
Asheville 1.1"
Charlotte 1.0"
Wilmington 0.3"

 
From MDA mets this morning (these folks don't hype):

"Stratospheric Warming And –AO Trends In Models

A stratospheric warming event will commence in the upcoming weekend, and models are allowing for that warming to transport downward from the stratosphere and into the troposphere. The results are increasing upper air heights over the Arctic and associated negative trends in the Arctic Oscillation (AO) during the 11-15 Day period (see maps above for evolution at the 500mb level and graph below for stratospheric temperature trends). This is a factor worth watching for the current 11-15 day period and especially in the periods beyond (i.e. 16-20 day period) for North American pattern implications. A –AO correlates colder in the Eastern Half this time of year, and a subset of dates from 1958, 1973, 1979, 1984-85, 1989, 2003, 2007, 2009 and 2013, which are best fit analogs for the upcoming modeled event, also highlight this as a colder signal for the Eastern Half. It should be noted, however, that recent research has events like this being more impactful in Europe versus North America, but it remains a factor worth watching heading into the final third of February."
 
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