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WidreMann told us it was gonna snow thread


LithiaWx

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DEEP CYCLONE DEVELOPING IN THE NORTHEAST...
PREFERENCE: TOWARDS A 12Z CANADIAN/12Z UKMET/12Z GFS COMPROMISE
WITH LOW CONFIDENCE

THE MAIN BRANCH OF THE WESTERLIES ACROSS WESTERN NORTH AMERICA IS
EXPECTED TO DROP IN LATITUDE WITH TIME, WHICH SHOULD ALLOW A
DEVELOPING DEEP CYCLONE JUST NORTH OF THE GREAT LAKES TO LOSE SOME
LATITUDE IN TANDEM, WITH ENERGY COMING AROUND THE EASTERN SIDE OF
THE UPSTREAM RIDGE ALLOWING THE SYSTEM TO DEEPEN WITH TIME. THE
GUIDANCE AGREES ON THESE IDEAS, BUT DETAIL ISSUES RIDDLE THE
GUIDANCE. THE 12Z ECMWF AND ITS 00Z ENSEMBLE MEAN ARE NOW THE
WEAK OUTLIERS WITH THE VORTEX NEAR THE NORTHEAST/ATLANTIC CANADA,
RATHER THAN SHIFTING THEIR UPPER LOW TO THE SOUTHERN STREAM ENERGY
MOVING UP THE EAST COAST, WHICH ALLOWS FOR A WEAKER AND MORE
STRUNG OUT CYCLONE FARTHER OUT TO SEA, WITH LESS PRECIPITATION
POTENTIAL ACROSS THE MID-ATLANTIC STATES/NEW ENGLAND THAN THE
OTHER GUIDANCE. WITH TRENDS IN THE CANADIAN SWINGING TOWARDS A
STRONGER SOLUTION (AS ADVERTISED BY THE UKMET FOR OVER A DAY NOW),
AND THE MODEL CONSENSUS CURRENTLY LYING WITH THE NON-ECMWF RELATED
GUIDANCE, THE 00Z GLOBAL ENSEMBLE GUIDANCE AND 00Z ECMWF ARE BEING
GIVEN MINIMAL WEIGHT. THE PREFERENCE REMAINS A 12Z UKMET/12Z
CANADIAN/12Z GFS COMPROMISE, WHICH IS PREFERRED WITH LOW
CONFIDENCE CONSIDERING THE STREAM INTERACTION/PHASING INVOLVED
WITH THIS SYSTEM, WHICH TENDS TO BE A LOW CONFIDENCE FORECAST IN
ITSELF, AND SINCE THEIR SOLUTION OCCASIONALLY BREACHES THE 00Z
GLOBAL ENSEMBLE GUIDANCE ENVELOPE WITH THE SURFACE LOW TRACK (TO
THE WEST). THIS SYSTEM HAS BEEN MARKED AS A CANDIDATE FOR
ATLANTIC TARGETED OBSERVATIONS/SHORT RANGE WINTER WEATHER
RECONNAISSANCE. SEE OUR QPF AND WINTER WEATHER
PRODUCTS/DISCUSSIONS FOR MORE DETAILS ON THE PRECIPITATION
POTENTIAL OF THIS SYSTEM.

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DEEP CYCLONE DEVELOPING IN THE NORTHEAST...

PREFERENCE: TOWARDS A 12Z CANADIAN/12Z UKMET/12Z GFS COMPROMISE

WITH LOW CONFIDENCE

THE MAIN BRANCH OF THE WESTERLIES ACROSS WESTERN NORTH AMERICA IS

EXPECTED TO DROP IN LATITUDE WITH TIME, WHICH SHOULD ALLOW A

DEVELOPING DEEP CYCLONE JUST NORTH OF THE GREAT LAKES TO LOSE SOME

LATITUDE IN TANDEM, WITH ENERGY COMING AROUND THE EASTERN SIDE OF

THE UPSTREAM RIDGE ALLOWING THE SYSTEM TO DEEPEN WITH TIME. THE

GUIDANCE AGREES ON THESE IDEAS, BUT DETAIL ISSUES RIDDLE THE

GUIDANCE. THE 12Z ECMWF AND ITS 00Z ENSEMBLE MEAN ARE NOW THE

WEAK OUTLIERS WITH THE VORTEX NEAR THE NORTHEAST/ATLANTIC CANADA,

RATHER THAN SHIFTING THEIR UPPER LOW TO THE SOUTHERN STREAM ENERGY

MOVING UP THE EAST COAST, WHICH ALLOWS FOR A WEAKER AND MORE

STRUNG OUT CYCLONE FARTHER OUT TO SEA, WITH LESS PRECIPITATION

POTENTIAL ACROSS THE MID-ATLANTIC STATES/NEW ENGLAND THAN THE

OTHER GUIDANCE. WITH TRENDS IN THE CANADIAN SWINGING TOWARDS A

STRONGER SOLUTION (AS ADVERTISED BY THE UKMET FOR OVER A DAY NOW),

AND THE MODEL CONSENSUS CURRENTLY LYING WITH THE NON-ECMWF RELATED

GUIDANCE, THE 00Z GLOBAL ENSEMBLE GUIDANCE AND 00Z ECMWF ARE BEING

GIVEN MINIMAL WEIGHT. THE PREFERENCE REMAINS A 12Z UKMET/12Z

CANADIAN/12Z GFS COMPROMISE, WHICH IS PREFERRED WITH LOW

CONFIDENCE CONSIDERING THE STREAM INTERACTION/PHASING INVOLVED

WITH THIS SYSTEM, WHICH TENDS TO BE A LOW CONFIDENCE FORECAST IN

ITSELF, AND SINCE THEIR SOLUTION OCCASIONALLY BREACHES THE 00Z

GLOBAL ENSEMBLE GUIDANCE ENVELOPE WITH THE SURFACE LOW TRACK (TO

THE WEST). THIS SYSTEM HAS BEEN MARKED AS A CANDIDATE FOR

ATLANTIC TARGETED OBSERVATIONS/SHORT RANGE WINTER WEATHER

RECONNAISSANCE. SEE OUR QPF AND WINTER WEATHER

PRODUCTS/DISCUSSIONS FOR MORE DETAILS ON THE PRECIPITATION

POTENTIAL OF THIS SYSTEM.

 

So basically they know about as much as we do. This is how imagine they feel when someone says, "so what do you think this one does?".

Unsure-Larry-David.gif

 

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I'm confused with the 5h setup at 33 Burger 18z has 2 areas of vorticities showing up around the plains area. Which one are we looking for to take over?

 

 

I only see one over the plains and then there is another in TX, we want both of these to phase. @39 it's phased but still positively tilted now it more resembles the 12z NAM to me. We'll see where it goes. 

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I only see one over the plains and then there is another in TX, we want both of these to phase. @39 it's phased but still positively tilted now it more resembles the 12z NAM to me. We'll see where it goes. 

Well at 36 it's gone but at 33 it had one in NE One in SW KS and then obviously the one over the southwest U.S. o well lol moving on..

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NAM just looks to me like it is too neutral to positively tilted it ends up not being far off from the GFS with the placement of the energy. 

I was just about to say the same thing. NAM is to positively tilted to make the turn in time. We would have a nice storm if it would just make that turn faster.

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