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Feb 17/18 Storm Threat - Discussion


mahk_webstah

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Congrats to SNE again I guess. This is evolving into an epic period for you all.

 

Whenever I get down in the dumps this winter of missing the snows to the tropics of CT and the tropics of CC, I ground myself as I recognize that Rick's missing things even worse.

 

I think I'll take missing 2-5" here at the Pit this weekend for perhaps cashing in on a little bit more in Jackson.  At least hoping so.

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For what it is worth ... from NCEP's diagnostic desk:

 

 

DEEP CYCLONE DEVELOPING IN THE NORTHEAST...PREFERENCE:  TOWARDS A 12Z CANADIAN/12Z UKMET/12Z GFS COMPROMISEWITH LOW CONFIDENCETHE MAIN BRANCH OF THE WESTERLIES ACROSS WESTERN NORTH AMERICA ISEXPECTED TO DROP IN LATITUDE WITH TIME, WHICH SHOULD ALLOW ADEVELOPING DEEP CYCLONE JUST NORTH OF THE GREAT LAKES TO LOSE SOMELATITUDE IN TANDEM, WITH ENERGY COMING AROUND THE EASTERN SIDE OFTHE UPSTREAM RIDGE ALLOWING THE SYSTEM TO DEEPEN WITH TIME.  THEGUIDANCE AGREES ON THESE IDEAS, BUT DETAIL ISSUES RIDDLE THEGUIDANCE.  THE 12Z ECMWF AND ITS 00Z ENSEMBLE MEAN ARE NOW THEWEAK OUTLIERS WITH THE VORTEX NEAR THE NORTHEAST/ATLANTIC CANADA,RATHER THAN SHIFTING THEIR UPPER LOW TO THE SOUTHERN STREAM ENERGYMOVING UP THE EAST COAST, WHICH ALLOWS FOR A WEAKER AND MORESTRUNG OUT CYCLONE FARTHER OUT TO SEA, WITH LESS PRECIPITATIONPOTENTIAL ACROSS THE MID-ATLANTIC STATES/NEW ENGLAND THAN THEOTHER GUIDANCE.  WITH TRENDS IN THE CANADIAN SWINGING TOWARDS ASTRONGER SOLUTION (AS ADVERTISED BY THE UKMET FOR OVER A DAY NOW),AND THE MODEL CONSENSUS CURRENTLY LYING WITH THE NON-ECMWF RELATEDGUIDANCE, THE 00Z GLOBAL ENSEMBLE GUIDANCE AND 00Z ECMWF ARE BEINGGIVEN MINIMAL WEIGHT.  THE PREFERENCE REMAINS A 12Z UKMET/12ZCANADIAN/12Z GFS COMPROMISE, WHICH IS PREFERRED WITH LOWCONFIDENCE CONSIDERING THE STREAM INTERACTION/PHASING INVOLVEDWITH THIS SYSTEM, WHICH TENDS TO BE A LOW CONFIDENCE FORECAST INITSELF, AND SINCE THEIR SOLUTION OCCASIONALLY BREACHES THE 00ZGLOBAL ENSEMBLE GUIDANCE ENVELOPE WITH THE SURFACE LOW TRACK (TOTHE WEST).  THIS SYSTEM HAS BEEN MARKED AS A CANDIDATE FORATLANTIC TARGETED OBSERVATIONS/SHORT RANGE WINTER WEATHERRECONNAISSANCE.  SEE OUR QPF AND WINTER WEATHERPRODUCTS/DISCUSSIONS FOR MORE DETAILS ON THE PRECIPITATIONPOTENTIAL OF THIS SYSTEM.
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How could you not buy the Euro after the last few events? 

 

Euro = Albert Einstein of weather models.  I still love that comparison, lol. 

 

 

"few events"    not even close.    

 

ONE event - and that was the blizzard... for about a month before hand it really was pretty bad.  

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For what it is worth ... from NCEP's diagnostic desk:

 

 

DEEP CYCLONE DEVELOPING IN THE NORTHEAST...PREFERENCE:  TOWARDS A 12Z CANADIAN/12Z UKMET/12Z GFS COMPROMISEWITH LOW CONFIDENCETHE MAIN BRANCH OF THE WESTERLIES ACROSS WESTERN NORTH AMERICA ISEXPECTED TO DROP IN LATITUDE WITH TIME, WHICH SHOULD ALLOW ADEVELOPING DEEP CYCLONE JUST NORTH OF THE GREAT LAKES TO LOSE SOMELATITUDE IN TANDEM, WITH ENERGY COMING AROUND THE EASTERN SIDE OFTHE UPSTREAM RIDGE ALLOWING THE SYSTEM TO DEEPEN WITH TIME.  THEGUIDANCE AGREES ON THESE IDEAS, BUT DETAIL ISSUES RIDDLE THEGUIDANCE.  THE 12Z ECMWF AND ITS 00Z ENSEMBLE MEAN ARE NOW THEWEAK OUTLIERS WITH THE VORTEX NEAR THE NORTHEAST/ATLANTIC CANADA,RATHER THAN SHIFTING THEIR UPPER LOW TO THE SOUTHERN STREAM ENERGYMOVING UP THE EAST COAST, WHICH ALLOWS FOR A WEAKER AND MORESTRUNG OUT CYCLONE FARTHER OUT TO SEA, WITH LESS PRECIPITATIONPOTENTIAL ACROSS THE MID-ATLANTIC STATES/NEW ENGLAND THAN THEOTHER GUIDANCE.  WITH TRENDS IN THE CANADIAN SWINGING TOWARDS ASTRONGER SOLUTION (AS ADVERTISED BY THE UKMET FOR OVER A DAY NOW),AND THE MODEL CONSENSUS CURRENTLY LYING WITH THE NON-ECMWF RELATEDGUIDANCE, THE 00Z GLOBAL ENSEMBLE GUIDANCE AND 00Z ECMWF ARE BEINGGIVEN MINIMAL WEIGHT.  THE PREFERENCE REMAINS A 12Z UKMET/12ZCANADIAN/12Z GFS COMPROMISE, WHICH IS PREFERRED WITH LOWCONFIDENCE CONSIDERING THE STREAM INTERACTION/PHASING INVOLVEDWITH THIS SYSTEM, WHICH TENDS TO BE A LOW CONFIDENCE FORECAST INITSELF, AND SINCE THEIR SOLUTION OCCASIONALLY BREACHES THE 00ZGLOBAL ENSEMBLE GUIDANCE ENVELOPE WITH THE SURFACE LOW TRACK (TOTHE WEST).  THIS SYSTEM HAS BEEN MARKED AS A CANDIDATE FORATLANTIC TARGETED OBSERVATIONS/SHORT RANGE WINTER WEATHERRECONNAISSANCE.  SEE OUR QPF AND WINTER WEATHERPRODUCTS/DISCUSSIONS FOR MORE DETAILS ON THE PRECIPITATIONPOTENTIAL OF THIS SYSTEM.

metfan beat you 

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EURO trended at H5 for the better while the 12z NAM trended towards an earlier capture at H5, it still went eastward with the surface low.  Future runs will bring this solution westward on the NAM.  GFS seems to favor a highly dynamic situation in which the H5 closes off earlier and dives southeastward over New England and ventures NEward towards Nova Scotia.  Another H5 close off and we are game for a potential monster storm part 2.  Still 72 hours out from anything happening over the region so plenty of time to make changes on the EURO enough to favor a major snowstorm for Eastern SNE.

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EURO trended at H5 for the better while the 12z NAM trended towards an earlier capture at H5, it still went eastward with the surface low. Future runs will bring this solution westward on the NAM. GFS seems to favor a highly dynamic situation in which the H5 closes off earlier and dives southeastward over New England and ventures NEward towards Nova Scotia. Another H5 close off and we are game for a potential monster storm part 2. Still 72 hours out from anything happening over the region so plenty of time to make changes on the EURO enough to favor a major snowstorm for Eastern SNE.

What area?
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Next 7-10 days could possibly make you forget about Dec and Jan

 

After the last 4-5 days I've already forgotten.  We string together another storm or two, this winter moves into the good category between the cold and categorical size of a few events.

 

AFA the Euro, it's just as fallible as the rest in this pattern/winter. 

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After the last 4-5 days I've already forgotten.  We string together another storm or two, this winter moves into the good category between the cold and categorical size of a few events.

 

 

Yup, Still not at climo avg here, But could change rather quickly after saturday, If not by next weekend

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For what it is worth ... from NCEP's diagnostic desk:

 

 

DEEP CYCLONE DEVELOPING IN THE NORTHEAST...PREFERENCE:  TOWARDS A 12Z CANADIAN/12Z UKMET/12Z GFS COMPROMISEWITH LOW CONFIDENCETHE MAIN BRANCH OF THE WESTERLIES ACROSS WESTERN NORTH AMERICA ISEXPECTED TO DROP IN LATITUDE WITH TIME, WHICH SHOULD ALLOW ADEVELOPING DEEP CYCLONE JUST NORTH OF THE GREAT LAKES TO LOSE SOMELATITUDE IN TANDEM, WITH ENERGY COMING AROUND THE EASTERN SIDE OFTHE UPSTREAM RIDGE ALLOWING THE SYSTEM TO DEEPEN WITH TIME.  THEGUIDANCE AGREES ON THESE IDEAS, BUT DETAIL ISSUES RIDDLE THEGUIDANCE.  THE 12Z ECMWF AND ITS 00Z ENSEMBLE MEAN ARE NOW THEWEAK OUTLIERS WITH THE VORTEX NEAR THE NORTHEAST/ATLANTIC CANADA,RATHER THAN SHIFTING THEIR UPPER LOW TO THE SOUTHERN STREAM ENERGYMOVING UP THE EAST COAST, WHICH ALLOWS FOR A WEAKER AND MORESTRUNG OUT CYCLONE FARTHER OUT TO SEA, WITH LESS PRECIPITATIONPOTENTIAL ACROSS THE MID-ATLANTIC STATES/NEW ENGLAND THAN THEOTHER GUIDANCE.  WITH TRENDS IN THE CANADIAN SWINGING TOWARDS ASTRONGER SOLUTION (AS ADVERTISED BY THE UKMET FOR OVER A DAY NOW),AND THE MODEL CONSENSUS CURRENTLY LYING WITH THE NON-ECMWF RELATEDGUIDANCE, THE 00Z GLOBAL ENSEMBLE GUIDANCE AND 00Z ECMWF ARE BEINGGIVEN MINIMAL WEIGHT.  THE PREFERENCE REMAINS A 12Z UKMET/12ZCANADIAN/12Z GFS COMPROMISE, WHICH IS PREFERRED WITH LOWCONFIDENCE CONSIDERING THE STREAM INTERACTION/PHASING INVOLVEDWITH THIS SYSTEM, WHICH TENDS TO BE A LOW CONFIDENCE FORECAST INITSELF, AND SINCE THEIR SOLUTION OCCASIONALLY BREACHES THE 00ZGLOBAL ENSEMBLE GUIDANCE ENVELOPE WITH THE SURFACE LOW TRACK (TOTHE WEST).  THIS SYSTEM HAS BEEN MARKED AS A CANDIDATE FORATLANTIC TARGETED OBSERVATIONS/SHORT RANGE WINTER WEATHERRECONNAISSANCE.  SEE OUR QPF AND WINTER WEATHERPRODUCTS/DISCUSSIONS FOR MORE DETAILS ON THE PRECIPITATIONPOTENTIAL OF THIS SYSTEM.

A terrible post indeed, Tip.:)

 

I'm not sure if I've ever seen the bolded combo as the  'models of choice'.

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After the last 4-5 days I've already forgotten.  We string together another storm or two, this winter moves into the good category between the cold and categorical size of a few events.

 

AFA the Euro, it's just as fallible as the rest in this pattern/winter. 

 

Hmmm...sounds like what a certain met has been saying to you.

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