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January 31-February 2 Historic Winter Storm part 7


Powerball

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this from KC discussion

FROM A MODEL PREFERENCE PERSPECTIVE...CONTINUE TO USE A BLEND OF THE

ENSEMBLES AND THEIR PLUMES WITH SOME GUIDANCE BY THE 12Z GFS. WHILE

IT MAY BE HELPFUL...FEEL THE HIGHER RESOLUTION NAM GUIDANCE IS

THROWING TOO MUCH CONVECTIVE INFLUENCE INTO ITS SOLNS TO BE OF USE.

THE GEM/EC REMAIN TROUBLING THOUGH WITH SUCH OVERDEVELOPED UPR JET

COUPLETS THAT THEY PULL THE UPR WAVE FURTHER NW AND DEVELOP AN

INCREDIBLE DEFORMATION SNOW BAND AND TROWAL WELL INTO NWRN MO. WHILE

THIS IS FEASIBLE...NOT A TON OF SUPPORT FROM ENSEMBLES.

HOWEVER...WILL LEAVE THE DOOR OPEN AND TREND QPF A BIT IN THAT

DIRECTION.

i dont understrand their reasoning here......wouldnt it be expected that the ensembles have lower res than the operationals?

or are they talking about short range modeling here?

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I can't believe what I am seeing--per latest WV and RUC PV maps--these individual PV maxes are nearly already phased. The southern stream has just begin to tilt negative too. I personally believe the most amped up models will be right.

Good stuff baroclinic I look forward toyour analysis when you really get dialed into this thing in the next few hours.

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http://blog.chicagoweathercenter.com/

Strong winds expected to whip up waves of 14 to 20 feet on Lake Michigan may result in lakeshore flooding Tuesday night and Wednesday. For that reason, the National Weather Service has issued a Lakeshore Flood Watch from Chicago to Sheboygan, Wisconsin. In addition to the extreme wave heights, northeast winds increasing to gale force will also raise the lake level by half a foot.

Sections of Lake Shore Drive and Sheridan Road may experience flooding.

I live between LSD and Sheridan

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I can't believe what I am seeing--per latest WV and RUC PV maps--these individual PV maxes are nearly already phased. The southern stream has just begin to tilt negative too. I personally believe the most amped up models will be right.

post-999-0-70904500-1296520475.gif

Fascinating stuff. This sounds like it could have implications for us here in the Southern Plains with regards to placement of heaviest axis of snow. Short-range models are shifting heavy snows further west into Oklahoma. Would you agree with this assessment?

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I can't believe what I am seeing--per latest WV and RUC PV maps--these individual PV maxes are nearly already phased. The southern stream has just begin to tilt negative too. I personally believe the most amped up models will be right.

post-999-0-70904500-1296520475.gif

quick question Baro

would an earlier phase and more amped solution result in a deeper storm or a faster occlusion or both?

i want those heights pumped up along the east coast, but at the same time i dont want this to occlude so far south.

a deeper storm with the same general area of occlusion would be ideal. do you think that is more likely than what the models are showing, or would you lean towards a further south occlusion?

its a delicate balancing act here with that menacing PV standing on my back deck.

appreciate your thoughts as always.

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Good stuff baroclinic I look forward toyour analysis when you really get dialed into this thing in the next few hours.

This is going to be exciting to watch unfold! When there is still such model discrepancy and such an unstable situation--the details matter and things can really change fast.

So probably on the western edge of the guidance as well?

I think so--typically these bombs track a tad farther W than modeled. I don't see a NAM coup happening.

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