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East Coast Threat/Sandy Part III


free_man

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The worst track for highest impact overall in the Northeast would probably be something into C/N NJ...you'd probably get an inner core still at least partially intact to flood NYC from the S and then the outer windfield which should be very strong will hammer Narragansett and LI sound.

Worst case for just SNE would probably be an accelerating storm over W LI before it does its pinwheel act.

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The worst track for highest impact overall in the Northeast would probably be something into C/N NJ...you'd probably get an inner core still at least partially intact to flood NYC from the S and then the outer windfield which should be very strong will hammer Narragansett and LI sound.

Worst case for just SNE would probably be an accelerating storm over W LI before it does its pinwheel act.

Tough go ahead for many though south of NE in that case. That would leave the remainder of New England--or at least the southern areas--to deal with some rain? Kevin will be so relieved.

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That would be a GFS-Euro middle ground, really.

Somewhere between the GFS and euro seems to be the most likely landfall but I certainly wouldn't yet rule out farther to the north. The storm is still not in the time range when the models are at their best. The strong block puts more constraints on cone of uncertainty but we're still a couple of days away from being able to get down to specifics for who will be impacted most.

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Local met on TV is saying max wind of 40MPH if it make LF in CNJ. Would that be true for SNE?

I think it would depend somewhat on the forward speed and the angle of attack too...if it is moving like due W when it hits NJ, we won't see very impressive winds across most of SNE...but if it is accelerating NNW, then I think the winds would be more impressive.

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Somewhere between the GFS and euro seems to be the most likely landfall but I certainly wouldn't yet rule out farther to the north. The storm is still not in the time range when the models are at their best. The strong block puts more constraints on cone of uncertainty but we're still a couple of days away from being able to get down to specifics for who will be impacted most.

The only reason I think the east/north solutions are coming off the table is the Euro was the frontrunner of sorts with the overall idea that seems to be panning out, and it's the furthest south of the bunch at this stage.

The storm hound in me would love to believe otherwise.

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I think it would depend somewhat on the forward speed and the angle of attack too...if it is moving like due W when it hits NJ, we won't see very impressive winds across most of SNE...but if it is accelerating NNW, then I think the winds would be more impressive.

Yeah the further south it strikes though, the less the wind threat although coastal flooding would still be massive.

At least at this point a lot of the model QPF values aren't even close to Irene in central/northern New England. Not sure how it compares further south. The bulk of the heaviest rain appears to be heading for the mid-Atlantic on the western side of the storm.

I think CT_Blizz will lose it if this tracks into southern NJ, leaving New England with a "meh" 1-2" of rainfall and gusts of advisory level, maybe barely reaching high wind warning criteria.

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I doubt it...usually later in season the 'cane or tropical makes landfall the lower the CAPE.

I was looking exclusively at the push to the WSW that was being hinted at.

Reminded me of the south turn by Beulah which caused a lot of twisters, if my memory serves me correctly:

http://weather.unisys.com/hurricane/atlantic/1967/BEULAH/track.gif

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The only reason I think the east/north solutions are coming off the table is the Euro was the frontrunner of sorts with the overall idea that seems to be panning out, and it's the furthest south of the bunch at this stage.

The storm hound in me would love to believe otherwise.

I think the euro to nyc cone is by far the most likely. I personally do not want the euro solution as I'd be screwed where I live. The derecho in June knocked my power out for 7 days. I'm too old to root for another outage. Tomorrrow I am going to fill my gas tanks for the generator and probably will also get propane so I have some to cook stuff on the grill. My guess for a solution is near the euro ens mean but wouldn't be surprised if the operational was right since it has been the big leader and has kept shifting south.

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What type of winds and surge are we talking about in areas of highest impact?. Are far as winds obviously the normal wind/pressure relationship in TC's is not going to apply but it will have a tighter wind field that a 960 ET low i the plains. Surge will be location and angle of approach specific for sure. Anything moving NW into NJ is going to cause problems for NYC.

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Yeah the further south it strikes though, the less the wind threat although coastal flooding would still be massive.

At least at this point a lot of the model QPF values aren't even close to Irene in central/northern New England. Not sure how it compares further south. The bulk of the heaviest rain appears to be heading for the mid-Atlantic on the western side of the storm.

I think CT_Blizz will lose it if this tracks into southern NJ, leaving New England with a "meh" 1-2" of rainfall and gusts of advisory level, maybe barely reaching high wind warning criteria.

Yeah I do not see Irene-type rainfall amounts for western NE at this point. Doesn't mean there won't be some heavy rain totals...esp if we get some orographic enhancement...but 8-10 inch amounts like in Irene are not looking very likely around here. The best chance for that will be near the front which would be well west of us in NY State and PA.

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Yeah I do not see Irene-type rainfall amounts for western NE at this point. Doesn't mean there won't be some heavy rain totals...esp if we get some orographic enhancement...but 8-10 inch amounts like in Irene are not looking very likely around here. The best chance for that will be near the front which would be well west of us in NY State and PA.

Yeah I agree. Someone will get clobbered with rain west of the track but I doubt it will be in NE.

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Oh, yeah. You aren't kidding. This could be like a prolonged Irene, except with much stronger winds to boot. If Sandy comes in south of us, the enhancement on the east slopes will be tremendous with that type of easterly low-level jet and tropical moisture getting wrapped in.

Picture a quasi-stationary firehose from the E and SE with unrelenting torrential rains and gusty winds. Worst case scenarios would be 10"+ of rain for MPM and MRG's area. Will Route 2 get washed out again?

The potential is also there for downsloping to increase wind speeds on the west facing slopes of these mountain ranges as well.

Also shadowing across the Hudson and Ct River valleys less rain these spots.

Euro also was farther SW and stronger with the block by NewFoundland.

CNJ

post-110-0-62259900-1351200246_thumb.png

Here are the GFDL ensembles

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