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The 3/3 30 degree temp change sleet/ice event for NC


mackerel_sky

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Problem is RDU only get's 0.10" of precip frozen, hard to tell with GSO. NAM is pretty good with temps, not ready to completely give up hope, will wait for RGEM to do that, it's been the most consistent along with UK. NAM has been bouncing around but considering we are 18 hours out it should be able to nail this now.

Meh, it's not a big deal, was hoping to see some sleet but not the end of the world, spring starts for us on Saturday after this soaking rain we get from the coastal.

The MA is having another historic winter, top 5 was what I read for DC.

The road to truth takes many turns...sometimes north, sometimes south. There's still some road left yet to travel. :)

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I still have sleet piles in my front flower beds (north side) from the 2/12-13 event. So, I really hold sleet in very high regard due to its staying power. Record for snow/ice in my yard is 30 days. If we can get a decent hit Thursday, maybe I can make a run at it?

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The road to truth takes many turns...sometimes north, sometimes south. There's still some road left yet to travel. :)

 

LOL, we will see.  I like where Brick is better than we are, the NAM's get the freezing line right down I-40 for a couple of hours and than finally drops.  If RGEM goes north I am out  :axe:

 

Verbatim on the 4km NAM we ping for 4-5 hours, not sure how much precip that is though.

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The Ridge in the immediate SE has basically been in control all winter. This is a classic example currently.

KATL has already received 250% of its annual average SN/IP in addition to a significant amount of ZR. Actually, the ridge being nearby and allowing for a battleground between warm and cold has resulted in the well above average wintry precip. in Atlanta and much of the SE US. I'd obviously take that any winter !

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LOL, we will see.  I like where Brick is better than we are, the NAM's get the freezing line right down I-40 for a couple of hours and than finally drops.  If RGEM goes north I am out  :axe:

 

Verbatim on the 4km NAM we ping for 4-5 hours, not sure how much precip that is though.

 

On the Hi-Res, RDU is around 0.3" QPF.  GSO is 0.5-0.6" QPF.  Roxboro is ~0.5" QPF.  That's actually a big uptick from last run, when GSO was around 0.3" and RDU was 0.2", I believe.

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On the Hi-Res, RDU is around 0.3" QPF.  GSO is 0.5-0.6" QPF.  Roxboro is ~0.5" QPF.  That's actually a big uptick from last run, when GSO was around 0.3" and RDU was 0.2", I believe.

 

0z HRRR blows chunks, warmer than the NAM's and actually brings in the precip to us much earlier thus would be mostly rain.  It has the freezing line well into VA at the same time the NAM has it almost to GSO/Wake County at 10am tomorrow.  Though the HRRR is still a little outside it's range.

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I really don't have much invested in this storm so whatever frozen precip I end up w/ will be great.  This was one of them storms I saw on the models but always thought it would end up north of me until a couple of days ago.

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This run is still enough to cause significant travel problems for GSO, RDU, etc.  The surface freezing line is all the way down to the NC/SC border by tomorrow afternoon.  The foothills stay quite balmy.  The leeside areas are still above freezing by evening.

 

No snow this run for anyone south of the NC/VA border.  It's all IP/ZR.  It's showing 19 here at 7 PM tomorrow night.  Brrr.

 

I'd guess DCA is around 9-12" per this run.  CHO is the jackpot area, it seems.

Thing is I'm headed to Greensboro in the morning to work! So I may get to see frozen precip anyway. lol

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Thing is I'm headed to Greensboro in the morning to work! So I may get to see frozen precip anyway. lol

I know SJ is just telling us what the models are saying, but no way it's right we will go below freezing rather early. The cold air loves to bank up against the mountains and funnel down the App Chain. into our foothills region maybe south toward asheville region but i doubt it stays above freezing  here. 

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Woah, the 00z RGEM looks south compared to 12z, I think.  Looking at the B&W maps, it's a little south, but precip looks more meager up towards the Mid-Atlantic at hr 12-24.  I can't really compare it with 18z since the panels are only every 12 hours.  (Better maps will be out eventually)

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Woah, the 00z RGEM looks south compared to 12z, I think.  Looking at the B&W maps, it's a little south, but precip looks more meager up towards the Mid-Atlantic at hr 12-24.  I can't really compare it with 18z since the panels are only every 12 hours.  (Better maps will be out eventually)

RGEM held, looks a tick colder, although not 100% sure. Will know for sure in 10 mins.

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RGEM has about 5mm of frozen for RDU, roughly 3 for sleet and 2 for snow, roughly same as 18z. Big deal was the drop off in precip for the MA, not sure why that happened, only has 12 mm of snow for DC, all previous runs had 18-20mm. Probably a fluke I guess.

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RGEM has about 5mm of frozen for RDU, roughly 3 for sleet and 2 for snow, roughly same as 18z. Big deal was the drop off in precip for the MA, not sure why that happened, only has 12 mm of snow for DC, all previous runs had 18-20mm. Probably a fluke I guess.

 

Yeah, that's the main thing I noticed with the run.  It might provide nice meltdown material when someone mentions it in there.

 

Doesn't the RGEM run a little warm sometimes?  I know it was too warm leading up to the 2/12-2/13 event, at least.

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RGEM has about 5mm of frozen for RDU, roughly 3 for sleet and 2 for snow, roughly same as 18z. Big deal was the drop off in precip for the MA, not sure why that happened, only has 12 mm of snow for DC, all previous runs had 18-20mm. Probably a fluke I guess.

5 mm doesn't sound like much at all. But I don't know. I can't remember how that translates to inches, and I'm too lazy to try and look it up on a Blackberry that barely connects to the net anyway.

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Yeah, that's the main thing I noticed with the run.  It might provide nice meltdown material when someone mentions it in there.

 

Doesn't the RGEM run a little warm sometimes?  I know it was too warm leading up to the 2/12-2/13 event, at least.

yes it does James
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Here is the current surface map for you record keepers. 

 

Cold air is building waiting to spill over the mountains. Shall be interesting in a several hours. A strong CAD is on the way.

 

The cold air is coming down from the north, and even northeast.  There's not going to be any cold air "spilling over the mountains" in this situation.

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The cold air is coming down from the north, and even northeast. There's not going to be any cold air "spilling over the mountains" in this situation.

I think it has to get over mountains at some point, even if up in PA, because the MA weenies are still waiting on there temps to drop to the lower 30s, then it will funnel S/SW
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