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Winter 2013-14 Pattern Discussion III


Marion_NC_WX

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The 00z Euro takes a substantial jog south with the 3/3 storm and delivers a substantial snow-to-ice storm for much of NC.  It's close to staying all-snow for N NC, but it's a hair too warm (not that it matters much 8+ days out).

 

It's actually a big ice storm, verbatim.  The surface low tracks from the FL panhandle up to around Myrtle Beach.  It was another 100 miles further inland at 12z, so the trend is our friend here. ;) It actually might stay all-snow for places like Mt. Airy and Boone.  Even the icy areas might change back over to snow again as it moves out.

 

The clown nicely puts down 7-8" here, but a lot of that is likely IP and/or ZR.  It is a decent 6-10" hit for DC and most of VA.  Shift the track another 50-100 miles east and a lot of us are making snow angels and snowmen in a winter wonderland, though.

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12z NAM still looks interesting at hour 75. Not a lot of precip but it looks like snow fro at least northern and western NC/SC:

http://mag.ncep.noaa.gov/data/nam/12/nam_namer_075_850_temp_mslp_precip.gif

RAH also keeping the door open for something wintery in this time period and also for Friday.

THERE CONTINUES TO BE AT LEAST A MINIMAL THREAT OF WINTERY

PRECIPITATION TUE NIGHT/WEDNESDAY (MAINLY NW)... AND THEN AGAIN IN

THE CLIMO PREFERRED AREAS OF THE NW ZONES LATE FRI-SAT. HOWEVER...

IT APPEARS THAT OUR REGION WILL CONTINUE TO BE ON THE SOUTHERN EDGE

OF THE ARCTIC AIR INTRUSIONS AND POSSIBLY THE NORTHWEST EDGE OF THE

BEST MOISTURE (OR PRECIPIATION SHIELD) WITH BOTH POTENTIAL SYSTEMS.

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Euro ensembles actually support the OP this time. More snow members for the 2/26 event. Euro is trying to figure it out.

 

For March 1st at RDU, mean is 2.4" OP is 3.5" or so. 6 events over 6" and 1 big dog. Contrast that with the last run, 3 events over 6" and 1 big dog. And the 00z run before that, 3 events over 6" no big dog.

 

Euro still having trouble with how cold it's going to get after 144 hours, which obviously is an important time period.

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Looks bleak, every run of the GFS the HP coming down from Canada is slower and further NW, 12z run is a coastal for NE. It's been a solid winter.

Maybe the cold is slowing down to make 3/3 the "one" part duh! If the cold keeps getting pushed back and less impressive, we are in big trouble if we want wintry weather
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FWIW Euro ensemble mean showing pretty impressive sig for east coast trough, west coast ridge building valid March 10th. I know it's an infinite days out, but it's been showing up for several runs now and it's an ensemble mean. So, pattern repeat? It's been the the trend all winter. Maybe one of these perfect timing systems will work out.

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Surprised not to see 12z Euro talk on here -- Day 6 map looked great for I-40 folks and just 2C away from I85 -- upper features improved. The surface high that had been stuck in Canada was down in northern U.S.

 

It's not bad for folks west of say GSO/INT, to warm for everyone east of that.  Hopefully this can trend into a stronger coastal and at least give the foothills/mtns a nice event.

 

The 3/3 potential looks the same as the 3/1 event, nice MA to NE coastal snow storm.

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00z Euro - Major snow to ice storm on 3/3 for NC.  Great snowstorm for S VA-northwards... fairly close to the 00z run.  Nice CAD.

 

There might be an inch or two of snow for some on the front end before a changeover to ~0.50" liquid equivalent of ZR/IP.  Surface temperatures are in the 20s for GSO verbatim and stay below freezing for RDU.  CLT looks a little too warm.

 

A 1044 mb HP is working its way into southern Iowa at the end of the run...  Winter isn't done yet, per the Euro.  Three chances for snow over the next 10 days.  Surely, we can get lucky and connect with one of those for at least a few flakes.

 

EDIT: Actually, it looks like the Euro might be about to destroy NC/TN at around D11 and D12 if you could extrapolate it.  Wow.  K/U storm.  I'm all-in for the 3/3 storm and the 3/6 storm.  :yikes:

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00z Euro - Major snow to ice storm on 3/3 for NC.  Great snowstorm for S VA-northwards... fairly close to the 00z run.  Nice CAD.

 

There might be an inch or two of snow for some on the front end before a changeover to ~0.50" liquid equivalent of ZR/IP.  Surface temperatures are in the 20s for GSO verbatim and stay below freezing for RDU.  CLT looks a little too warm.

 

A 1044 mb HP is working its way into southern Iowa at the end of the run...  Winter isn't done yet, per the Euro.  Three chances for snow over the next 10 days.  Surely, we can get lucky and connect with one of those for at least a few flakes.

 

EDIT: Actually, it looks like the Euro might be about to destroy NC/TN at around D11 and D12 if you could extrapolate it.  Wow.  K/U storm.  I'm all-in for the 3/3 storm and the 3/6 storm.  :yikes:

these storms keep sucking us in 9 and 10 days out like 2-28 and 3-1 storms and then nothing.  then we start over again with another 9-10 days,  don't get me wrong its fun tracking these storms but I'm hoping we can cash in before our chances are gone due to the sun angle and the modifying cold air from the north.    :axe:

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these storms keep sucking us in 9 and 10 days out like 2-28 and 3-1 storms and then nothing.  then we start over again with another 9-10 days,  don't get me wrong its fun tracking these storms but I'm hoping we can cash in before our chances are gone due to the sun angle and the modifying cold air from the north.    :axe:

 

Don't worry about the day 10. Even though the models are not picture perfect as far as the details right now the grand scheme of things is supportive of snowfall this week into next weekend.

Not going to say for the whole SE but most of NC espcially the mountains.

 

What does look certain

Cold suppressed flow

Over running begins Monday night/Tues

2 waves of LP one Tues night/Wednesday and one again around the 3/1 timeframe.

 

GFS,Euro,CMC,Nam all point to snow imo Tues night judging by the temps aloft and RH fields suggesting larger precip shields and heavier qpf potential then what is being shown.

 

The 0c 850 line is making slow progress SE. The front tomorrow night should push the line south along the NC/SC border then should see a slight rebound in warmer temps aloft into NE NC as the wave Tuesday night pushes through and eventually clears the coast. Once the storm clears the coast  colder air will push back south before the next one... which its still too far out to pay much attention too. But its coming together slowly but surely.

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Don't worry about the day 10. Even though the models are not picture perfect as far as the details right now the grand scheme of things is supportive of snowfall this week into next weekend.

Not going to say for the whole SE but most of NC espcially the mountains.

 

What does look certain

Cold suppressed flow

Over running begins Monday night/Tues

2 waves of LP one Tues night/Wednesday and one again around the 3/1 timeframe.

 

GFS,Euro,CMC,Nam all point to snow imo Tues night judging by the temps aloft and RH fields suggesting larger precip shields and heavier qpf potential then what is being shown.

 

The 0c 850 line is making slow progress SE. The front tomorrow night should push the line south along the NC/SC border then should see a slight rebound in warmer temps aloft into NE NC as the wave Tuesday night pushes through and eventually clears the coast. Once the storm clears the coast  colder air will push back south before the next one... which its still too far out to pay much attention too. But its coming together slowly but surely.

hope your right ncweather.  I read GSP before I wrote that and it didn't sound promising unless GSP is staying on the light end of the precip. and doesn't want to go to the high end possibilities.   I know GSP was saying could be a winter weather advisory event tuesday night for the nc mtns.  

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Don't dismiss April for snow. I found this in the notes on Van Denton's Facebook page:

 

April 2-3, 1915    (2 days before Easter)    6-8 inches of snow in the Triad    Raleigh had 10 inches (this still stands as the 8th heaviest snowfall on record for Raleigh)

 

April 18, 1983  (my 18th birthday :-)  )    Dusting of snow over much of the Piedmont.   RDU had more than 1 inch

 

April 11, 1989....no snow over the Triad....but in Eastern NC, there was a good 2-4 inch snow from near Little Washington up into Martin and Bertie counties  (just east of Greenville where 1-2 inches fell).

 

April 6, 2007.....Dusting of snow over the Piedmont on a Friday night...similar to 1915, this was only days before Easter

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these storms keep sucking us in 9 and 10 days out like 2-28 and 3-1 storms and then nothing. then we start over again with another 9-10 days, don't get me wrong its fun tracking these storms but I'm hoping we can cash in before our chances are gone due to the sun angle and the modifying cold air from the north. :axe:

I guess we will find out if winter is hanging on or if the models are crying wolf. One thing is it seems they have not cried wolf as often this winter as in other recent winters.

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Personally after these model runs lately.. I'm not really feeling any Winter storms of any signifigance anymore.  There's a couple runs that are hit and miss, but down in the deep South; we are probably going to remain rain.

This is usually the case here  :P    The end of Feb, first of Mar, is when I start looking for signs that will point to an extended spring :lol: 

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Don't dismiss April for snow. I found this in the notes on Van Denton's Facebook page:

 

April 2-3, 1915    (2 days before Easter)    6-8 inches of snow in the Triad    Raleigh had 10 inches (this still stands as the 8th heaviest snowfall on record for Raleigh)

 

April 18, 1983  (my 18th birthday :-)  )    Dusting of snow over much of the Piedmont.   RDU had more than 1 inch

 

April 11, 1989....no snow over the Triad....but in Eastern NC, there was a good 2-4 inch snow from near Little Washington up into Martin and Bertie counties  (just east of Greenville where 1-2 inches fell).

 

April 6, 2007.....Dusting of snow over the Piedmont on a Friday night...similar to 1915, this was only days before Easter

 

Lets look at that. For us in the Triad that describes 2 dustings, one nothing, and one good snow 99 years ago.  I'm going to go out on a limb here and say it will not snow in the Triad in April.  

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The 00z Euro is a whiff on 2/26 with no interaction between the southern and northern streams (but it appears to be cold enough for N NC).

 

The 00z Euro drops ~1" of snow across a good portion of NC on the morning of 3/1.  Temperatures look alright for the northern half of the state, but precip is on the light side.  The storm kind of falls apart as it heads eastward.

 

3/3 is a massive ice storm for NC's CAD regions (too warm for GA/SC).  1"+ of ZR/IP... nasty.  The low tracks from C AL to C GA to around Elizabeth City, NC.  It is a 12"+ K/U snow event for the Mid-Atlantic.  The kind Euro clown shows 10.4" here... too bad it's really ZR and IP. :(

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The 00z Euro is a whiff on 2/26 with no interaction between the southern and northern streams (but it appears to be cold enough for N NC).

The 00z Euro drops ~1" of snow across a good portion of NC on the morning of 3/1. Temperatures look alright for the northern half of the state, but precip is on the light side. The storm kind of falls apart as it heads eastward.

3/3 is a massive ice storm for NC's CAD regions (too warm for GA/SC). 1"+ of ZR/IP... nasty. The low tracks from C AL to C GA to around Elizabeth City, NC. It is a 12"+ K/U snow event for the Mid-Atlantic. The kind Euro clown shows 10.4" here... too bad it's really ZR and IP. :(

Is that not another ice setup at 240 as well. Cheap maps show a prominent cad signature.

TW

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