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1/28-2/1: Multiple winter storm threats per models


GaWx

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Does the American Weather Models have access to the GFS ensemble mean like it did on Raleighwx's old site?  If so, does someone care to report if the 12z trended wetter further west...I think I'm signing up for the subscription this weekend!

 

GEFS are way west from last night.

 

3h9o.png

 

Last night: http://www.tropicaltidbits.com/analysis/models/gfs-ens/2014012400/gfs-ens_apcpn24_us_26.png

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 Obviously, it will likely be close on the 850's. If some of the areas getting 1.5" qpf on the model actually have 850's in the +1 to +5 range, it would be a massive IP/ZR storm of course. I'll be looking for the 850's once they're released. Either way, absent a large enough shift westward to bring the surface above 32, this would be a historic deep south and coastal storm whether snow, ZR, IP, or a combo. Maybe that happened already here and it is all plain rain?

Here is the 850s.

 

f108.giff114.giff126.gif

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Not sure if it was posted; but here is what the WPC/HPC said this morning.  AMAZING news!:

 

THERE IS GOOD CLUSTERING WITH A NERN US LOW THAT BRINGS A TRAILINGCOLD FRONT ACROSS THE EAST COAST ON DAY 3 MON...TO BE FOLLOWED BYCOLD HIGH PRESSURE SINKING INTO THE SOUTH AND EAST OVER THEFOLLOWING COUPLE DAYS.  HOWEVER IN THE MON-WED PERIOD DIFFERENCESEMERGE WITH THE EXACT HANDLING OF SHORTWAVE ENERGY ROTATINGTHROUGH MID-CONTINENT INTO THE ERN STATES.  ISSUES ALOFT LEAD TOMEANINGFUL DIFFERENCES WITH LOW DETAILS OFF THE SOUTHEAST/EASTCOAST.  RECENT ECMWF RUNS ARE ON THE SHARPER/AMPLIFIED SIDE OF THESPREAD WITH THEIR SHORTWAVE LEADING TO A SURFACE LOW ON THE WRNSIDE OF THE SPREAD INTO WED/THU.  THIS SOLTUION HAS INCREASINGLYFAVORABLE SUPPORT FROM RECENT ECMWF MEANS...AND GIVEN RECENTHISTORY IN THIS PATTERN RECENT GFS/GEFS ENSEMBLE MEANS SCENARIOSMAY BE TOO FAR OFFSHORE.  WPC GUIDANCE SHOWS AN INCREASEDPOTENTIAL FOR WINTERY PCPN OVER THE SOUTHEAST/SRN MID-ATLANTICCOMPARED TO CONTINUITY AS THE ECMWF ENSEMBLE MEAN NOW BRINGS A BITMORE MOISTURE AND PCPN ONSHORE COMPARED TO THE DETERMINISTICECMWF.  THIS SEEMS MORE CONSISTENT WITH SUCH AN AMPLIFIED MEANMID-UPPER LEVEL TROUGH POSITION.
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It's warmer based on thicknesses but sometimes that can be deceiving. Regardless, just inland would most certainly be cold enough.

 

 

I don't know if I would say it's unlikely..I think there is probably about a 50/50 shot it could go that way.

I think it's possible.  Winds would be in a favorable direction at the surface with the high centered back over the plains/lower ms valley with the low itself off shore. So winds would likely have a northern component. Plus  this is a true arctic airmass already in place and not one of these cases where locations have to wait on the cold air to arrive at the same time as the precip.  I think an area of freezing rain is a distinct possibility..especially in south ga given this type of airmass. I remember watching some old weather channel broadcasts on youtube and remember seeing a lot of freezing rain was happening in south ga  a few decades ago.

 

of course this is assuming it actually comes together and it's not dry.

I agree with this  ;) 

 

Off topic -- light sleet at my office in Ft. Walton Beach -- 37 degrees. Enjoying watching my old N.C. and SE peeps tracking a potential big dog -- good luck!

Congrats! :hug:

 

1.5 feet for south ga and how much for atl ?

Shush it with the mby questions   <_<

 

Does the American Weather Models have access to the GFS ensemble mean like it did on Raleighwx's old site?  If so, does someone care to report if the 12z trended wetter further west...I think I'm signing up for the subscription this weekend!

Yes....and you should sign up    :D  

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Not sure if it was posted; but here is what the WPC/HPC said this morning.  AMAZING news!:

 

Well that sounds good....now let's get the operationals to show it!

 

If I'm being truthful.....the best location for central NC would be about 100 miles west of what even the CMC is showing IMO. 

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Folks, enough with the "how much for" questions. Simply reading the thread and looking at the maps will tell you roughly how much.

Yeah. You can do it in like 3 steps:

 

1) Know where you are on a map. That's pretty important in general around here :)

2) For Euro and Canadian, be ready to type "x mm in in" into Google to get your QPF.

3) Multiply by 10 for a quick and dirty guess at snowfall amount. I'm not nearly knowledgeable enough to try to guess the ratio from the models - I'll leave that to the real mets.

 

Unless you're right on the coast, no worries about temps this time from what I can tell.

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None of the models are showing an actual phase as of right now, but yet things are still trending W. I think if we do see that phase then we could easily see a 100-200 mile shift west. This is reminding me so much of the Christmas 2010 scenario. Without the phase it was off the coast and with the phase it was a snowstorm for all of NC and a lot of SC

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Verbatim, the canadian looks to drop

 

 

I'M THE WEATHER BEST MODEL IN THE GAME. 

 

Looks like it drops close to 10-13MM IMBY, less in the metro as you head N&W.

with 850m temps close to -12c in charlotte. I'm sure surface temps are way down in the low 20s or even teens. So we wouldn't waste any precip

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None of the models are showing an actual phase as of right now, but yet things are still trending W. I think if we do see that phase then we could easily see a 100-200 mile shift west. This is reminding me so much of the Christmas 2010 scenario. Without the phase it was off the coast and with the phase it was a snowstorm for all of NC and a lot of SC

 

I was thinking the same thing... In my opinion, this storm is very similar to the Christmas 2010 scenario. The models, if I remember correctly, did not actually show anything inland until 36-48 hours out.

Its actually fun to track a storm in the winter time. This is something we have not done in a long time, and I am enjoying every minute of it.

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GEFS are way west from last night.

This is the 12z GFS ensembles correct? Just verifying

 

Hey buddy, when you go to delete an image out; just click the image itself in the quote and hit the delete key. :)  Might be harder to do on a phone etc though.  That should preserve the quote tags.

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I was thinking the same thing... In my opinion, this storm is very similar to the Christmas 2010 scenario. The models, if I remember correctly, did not actually show anything inland until 36-48 hours out.

Its actually fun to track a storm in the winter time. This is something we have not done in a long time, and I am enjoying every minute of it.

 

One big difference is this storm will be a lot colder.  The Christmas 2010 had marginal temps.  Having such cold air in place and after would make this storm a blast.  As others have mentioned 3/1980 was a cold storm.

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As I stated yesterday, I new at this and still learning. Looking at the Canadian out to 120 hrs it looks like the 850 temps at KECG are at -16 which is plenty cold when looking for snow. Being as that we are at least a few miles inland from the Atlantic, I still get worried with Lows tracking up the coast and bringing in warm air off the ocean and basically giving extreme coastal sections nothing but a cold rain.

I might be way off base here, but it looks to me (taking the models at face value) that the possibility remains that coastal sections see nothing more than a cold rain. Any input on these thoughts?

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