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Hurricane Sandy


Wonderdog

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Was trying to figure out what percent of the 950 mb winds will translate down. My guess was 80%, any other mets have rules of thumb. I know it depends on stability also.

edited for typo

I have found 70% momentum transfer for 850 mb winds and then cushion with a 5 mph bracket seems to be fairly accurate. So 80% from 950 mb seems reasonable.

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Yikes

RT @JimCantore I completely disagree with NHC not putting up Hurricane warnings for the northeast. #sandy

Yeah he disagrees as much as the nws does with a private company unilaterally deciding to name winter storms and blasting the public with headlines all winter. Sandy is going to paste wv with snow so why hasn't twc mentioned Athena yet?

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Yeah he disagrees as much as the nws does with a private company unilaterally deciding to name winter storms and blasting the public with headlines all winter. Sandy is going to paste wv with snow so why hasn't twc mentioned Athena yet?

Wx biz is cutthroat .. Gotta always be saying you're the best

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Yikes

RT @JimCantore I completely disagree with NHC not putting up Hurricane warnings for the northeast. #sandy

If one of the principal jobs of the NWS is to warn the average Joe of potential weather hazards, then this is a huge failure to communicate. The storm is called "HURRICANE Sandy" so people are waiting for HURRICANE watches and warnings. If they don't hear that they're under a hurricane warning, they're going to assume that it's not going to affect them and that it's not that big a deal. The choice to use high wind watches/warnings communicates to the average person that either the storm is going to miss them or that it is less than a hurricane - and it's not.

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Really seems that on the models we want a central NJ hit for max impact. Too far S and we get into the calmer "core" and too far N (like the 18z GFS) we get out of the main precip radius.

Are the models picking up on the timing of the transition of the storm from tropical to extratropical very well? Would the state of the cyclone have an impact on the size of the precipitation shield? Wouldn't an extratropical storm tend to have a much larger precip shield than just a straight up warm core hurricane?

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Well for those in the MA, the southern flank of this storm will have quite the deformation zone. 85kt LLJ despite some inversion means watch out imo.That rain may be enough to bring down very strong gusts.

Thank for occasionally posting in our forum! Great to have your opinion and analysis! :thumbsup:

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I for one do not believe conditions will be all that bad in the lower Susquehanna valley, especially with a nnj landfall. Less wind and haven gotten 5 inches of rain in less time do to training thunderstorms.

With a regular cat 1 statements like this can be made. Not this time. Safe than sorry and being well prepared is the only play.

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Well for those in the MA, the southern flank of this storm will have quite the deformation zone. 85kt LLJ despite some inversion means watch out imo.That rain may be enough to bring down very strong gusts.

Thank for occasionally posting in our forum! Great to have your opinion and analysis! thumbsupsmileyanim.gif

Agreed.

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I for one do not believe conditions will be all that bad in the lower Susquehanna valley, especially with a nnj landfall. Less wind and have recieved 5 inches of rain during a training thunderstorm

Totally different situation. A slow moving thunderstorms that last 2 hours versus a 12-24 hours duration with steady winds and heavy rainfall and plus you have all the water in Northern PA that will have to go down the susuquehanna river.

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"Hurricane Sandy is now the 2nd largest tropical cyclone in the Atlantic since 1988, tied with Hurricane Lili of 1996. Sandy's tropical storm-force winds now extend 450 nautical miles from the center on the northeast side of the hurricane."

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