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Hurricane Sandy - LIVE - Meteorological Discussion


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Agreed-- it could be a 'cane in the Bahamas. But the motion isn't that fast-- maybe 12 kt-- and the NHC doesn't show a lot of acceleration.

Re: impacts further N, I would see more potential in this if it was going to be blasting N. Forward speed is what killed Irene and kept it from being a hurricane in the Northeast-- it didn't accelerate. I know that the transition to extratropical might give it a boost, but that factor isn't magic-- it doesn't turn a so-so 'cane into a mega-whopper storm of the century. (This second paragraph is not really addressed to you, Tony-- just a general comment.)

I believe this is true if the concern is direct wind impacts around the system core. I'd suspect the slower motion and ET transition could increase the flooding from both fresh and salt water?

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I'm finding it really interesting that Sandy is actually looking a bit better as Sandy passes over the highest mountain in Jamaica... which does not compute to me. Slightly clearer/smaller eye, and now major convective increases in the eyewall.

Possible that due to the core being large enough and the eastern semi-circle of the circulation remaining off the eastern tip of Jamaica, the range of the Blue Mountains simply don't cover a large enough area to hamper inflow. The southern eyewall is going to be back over water in just a few more hours. Forward speed is fast enough and this may be aiding the core here. The call this wouldn't weaken back to TS status due to Jamaica was right on... eastern Cuba may be different; however, the core will be over land a good 10 to 12 hours and that has some high terrain as well.

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Based upon the expanding upper-level diffluence and the increased ascent provided by the expanding jet-entrance region between the retrograding upper low and the weak ridge, plus the fact that Sandy will retain an inner core when it moves off northern Jamaica, I think there is a better-than-not chance (>50%) that Sandy could intensify fairly quickly on its approach to Cuba. I would not be shocked to see a 10-, even 15-, kt increase before landfall. The outflow pattern, which is rapidly expanding in the NW quadrant, is becoming more reminiscent of what one would expect in a stronger hurricane.

Also, the substantial southerly 700-mb inflow jet on the E side of Sandy is advecting unstable parcels and higher relative humidity from the southern Caribbean basin. This type of pattern was seen in cases like Camille 1969. This could well allow Sandy to strengthen quickly as it leaves Jamaica and also provide a significant reservoir of conditionally unstable, mT air from the Caribbean even as Sandy enters the Bahamas. This type of mix could not only mean a system stronger than 65 kt off the east coast of FL, but potentially form a more potent hybrid system as Sandy accelerates off the East Coast.

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I'm finding it really interesting that Sandy is actually looking a bit better as Sandy passes over the highest mountain in Jamaica... which does not compute to me. Slightly clearer/smaller eye, and now major convective increases in the eyewall.

I'm glad you posted this. I was thinking the same as a layman looking at images and was afraid I misinterpreted.

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Most impressive hurricane below 20N this year IMO

Not sure I agree. Look at the pics of Ernie from near and just after landfall. It looked really awesome.

Who knows? Sandy might get stronger before hitting Cuba-- but for now, I think Ernie still wins. (And it certainly wins in terms of operational intensity-- it was 75 kt vs. Sandy's 70 kt.)

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Not sure I agree. Look at the pics of Ernie from near and just after landfall. It looked really awesome.

Who knows? Sandy might get stronger before hitting Cuba-- bt for now, I think Ernie still wins. (And it certainly wins in terms of operational intensity-- it was 75 kt vs. Sandy's 70 kt.)

Sandy looks stronger than 75kt at the moment.

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Not sure I agree. Look at the pics of Ernie from near and just after landfall. It looked really awesome.

Who knows? Sandy might get stronger before hitting Cuba-- bt for now, I think Ernie still wins. (And it certainly wins in terms of operational intensity-- it was 75 kt vs. Sandy's 70 kt.)

I don't think so. I think the organization of the CDO is solidly more impressive right now with Sandy.

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