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The Official 2014 Fall Discussion Thread


jburns

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Scratching my head on this one (seems to generally fly in the face of all we're seeing and reading):

 

attachicon.gifCFSv2.NaT2mProb.20141108.201412.gif

 

If the first part of December is above average that would be about right. A lot of mets feel that the cold air will truly start spilling in around late Dec and actually had Dec falling on the above average side. 

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I thought the Euro looked very cold at the end of it's run. You have a very dense cold airmass dropping in with 534 thickness dropping into Alabama. You're also seeing extremely cold 850's showing up near central Canada with -20 850's around Ohio. While these cold air masses may moderate by the time we get to them the fact is on the models it's looking like the middle of January. These look straight up like winter patterns. I think that's what's so exciting right now. What actually happens is a whole nother story. 

The polar vortex is displaced so far south due to some extreme blocking up by the poles.  Definitely a winter pattern...and the European looks quite stormy for the SE after about 144 hours.  

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If the first part of December is above average that would be about right. A lot of mets feel that the cold air will truly start spilling in around late Dec and actually had Dec falling on the above average side.

Bingo, there is a growing contingent of forecasters seeing a warm first half of Dec. Nothing to panic about imo because honestly early Dec isn't exactly prime time climo for the SE. It's better than November but still not a time where you normally thi k about lots of snowstorm potential for this region.

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Bingo, there is a growing contingent of forecasters seeing a warm first half of Dec. Nothing to panic about imo because honestly early Dec isn't exactly prime time climo for the SE. It's better than November but still not a time where you normally thi k about lots of snowstorm potential for this region.

 No panic. I just thougt it interesting given some of the below to well-below Dec maps posted here and elsewhere. Only tossed this out for observation ....

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To those of you guys without weatherbell maps (wish I could post those gorgeous things here), check out Ryan Maue's Twitter sometimes.  He posts a lot of it, especially important things.  10-day 850s on GFS are ridiculous in parts of the USA.

 

GFS parallel at 240 hrs.

 

 

1ichQoB.gif

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I thought the Euro looked very cold at the end of it's run. You have a very dense cold airmass dropping in with 534 thickness dropping into Alabama. You're also seeing extremely cold 850's showing up near central Canada with -20 850's around Ohio. While these cold air masses may moderate by the time we get to them the fact is on the models it's looking like the middle of January. These look straight up like winter patterns. I think that's what's so exciting right now. What actually happens is a whole nother story. 

 

Not to mention they will be hopefully allowing for the snow pack over the Midwest and GL to start building, this will help these airmasses stay colder for longer as the winter builds in.

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I'm still just amazed at how people are basically Pooping on this upcoming cold weather because it just isn't showing ridiculous temperatures.

I mean if this was January we would be talking about life-threatening cold if you compare the anomalies.

The one great thing us southerners always been able to say is that winter truly lasts about 4to 6 weeks. However given what the models are showing right now, we are going to be adding 2-3 more weeks to that

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Bingo, there is a growing contingent of forecasters seeing a pwarm first half of Dec. Nothing to panic about imo because honestly early Dec isn't exactly prime time climo for the SE. It's better than November but still not a time where you normally thi k about lots of snowstorm potential for this region.

there's nothing like warm weather to get you in the Christmas spirit. Honestly, if there's any winter month I dont want warmth its December. It would totally suck if December ended up warm and snowless and the cold and snow waited until January .
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there's nothing like warm weather to get you in the Christmas spirit. Honestly, if there's any winter month I dont want warmth its December. It would totally suck if December ended up warm and snowless and the cold and snow waited until January .

Reality is nobody has a crystal ball that will tell us what mid December will look like. It could be an icebox in the SE with a big snowstorm. I was just throwing out what I've seen from some forecasters recently, basically if they had to place their bets (some of them actually have to because they have energy clients) they are going with a cautious route regarding extreme cold toward the end of November and start of December. Personally I love cold from thanksgiving through New Years like you said for the spirit but what I want and like doesn't mean jack to what actually happens.

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RAH still keeping an eye open for late next week (they seem to have left out some details):

 

.LONG TERM /MONDAY THROUGH SATURDAY/...
AS OF 200 PM SATURDAY...

...TURNING MUCH COLDER LATE WEEK...

HIGH PRESSURE OVER THE EAST COAST WILL PRODUCE SUNNY SKIES AND
SEASONABLE TEMPERATURES ON MONDAY...WITH HIGHS FROM 65 TO 70 AND
MINS FALLING INTO THE LOWER 40S MONDAY NIGHT. AS THE HIGH EDGES EAST
ON TUESDAY...ENSUING SOUTHWEST FLOW AND INSOLATION WILL WARM TEMPS
UP A FEW DEGREES...WITH MOST AREAS REACHING THE LOWER 70S...AND THE
COOLER NORTHWEST REACHING THE UPPER 60S.

A COLD FRONT WILL BE SAGGING SOUTHEAST AND ACROSS THE AREA LATE
WEDNESDAY. DEEPER FLOW WILL BE PREDOMINANTLY WESTERLY...LIMITING
MOISTURE ADVECTION TO SMALL CHANCES AT BEST. THE LATE DAY FRONT
ARRIVAL AND LACK OF HEAVIER CLOUDINESS WILL ALLOW FOR A DECENT
WARMUP AHEAD OF FRONTAL PASSAGE AND HIGHS SHOULD REACH THE MID 60S
WITH PERHAPS SOME LOWER 70S IN THE EAST.

COLD AIR ADVECTION GETS UNDERWAY WEDNESDAY NIGHT AS HIGH PRESSURE
BUILDS EAST ACROSS THE OHIO VALLEY AND BEGINS TO FLOW SOUTH DOWN THE
COAST. MINS WILL BE IN THE UPPER 30S NORTHWEST TO LOWER 40S
SOUTHEAST. COLD AIRMASS WILL SETTLE ACROSS THE AREA...WITH HIGHS
MOSTLY IN THE UPPER 40S NORTHWEST TO LOWER 50S SOUTHEAST THROUGH
SATURDAY. FORECAST CONFIDENCE DOES FALL OFF DURING THE LATE WEEK
TIME FRAME...HOWEVER...THE POSITION OF THE HIGH WILL NOT BE IDEAL
FOR MAINTAINING A DAMMING SCENARIO...BUT THE GFS SHOWS POTENTIAL
DEVELOPMENT OF A SURFACE LOW ON THE FRONT AS IT LIES JUST OFFSHORE
WHICH COULD ENHANCE COLD AIR ADVECTION AS WELL AS POSSIBLY
ISENTROPICALLY INDUCED LIGHT PRECIP AND CLOUDINESS.
AT THIS EARLY
JUNCTURE...WILL LEAN TOWARDS INTRODUCTION OF SMALL CHANCE POPS FOR
LIGHT RAIN ON THURSDAY...SKEWED TOWARDS THE COAST AND HOLD OFF
MODIFICATIONS TO THE FRIDAY FORECAST TO SEE IF MODEL CONSENSUS
EMERGES.
 

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I'm still just amazed at how people are basically Pooping on this upcoming cold weather because it just isn't showing ridiculous temperatures.

I mean if this was January we would be talking about life-threatening cold if you compare the anomalies.

The one great thing us southerners always been able to say is that winter truly lasts about 4to 6 weeks. However given what the models are showing right now, we are going to be adding 2-3 more weeks to that

The forecast for Atlanta next Saturday is 52 and 32, big deal.

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18z GFS has a deepening of the central U.S. trough next weekend...wintry precip breaking out in Ark/La/Tx into N MS

As we've discussed before the models look to be having a very difficult time with this emerging pattern. I think there is definitely potential for somebody(possible many) in the SE to get a winter event during the next few weeks. It may take 72-96 hours time range before the models start homing in on the correct solution.

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Euro seasonal not on board for cold eastern half of US until late winter (after Nov. cold) per JB.  If I understood him correctly! Someone can correct me if I wrong.....

Didn't they also predict a warm November?  I wouldn't worry, we have an awesome pattern set up for the next week or 2.  

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