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Post Tropical Storm Ophelia-Last advisory


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Perhaps, but looking at the visible satellite imagery, it looks like there is a new, robust at least mid-level circulation developing much more under the convection, say around 18N, 59W.

Yep, it's trying, though it will take at least one more day to get it's act together and start strengthening. I'm now in the Euro camp, peaking it at hurricane (cat 1) in around 3 days.

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000

WTNT41 KNHC 272034

TCDAT1

TROPICAL DEPRESSION OPHELIA DISCUSSION NUMBER 21

NWS NATIONAL HURRICANE CENTER MIAMI FL AL162011

500 PM AST TUE SEP 27 2011

A HURRICANE HUNTER AIRCRAFT INVESTIGATING THE REMNANTS OF OPHELIA

HAS FOUND THAT THE LOW-LEVEL CIRCULATION...ALTHOUGH SLIGHTLY

ELONGATED...HAS A SUFFICIENTLY WELL-DEFINED CENTER TO BE CONSIDERED

AS A TROPICAL CYCLONE AGAIN. BASED ON THE AIRCRAFT DATA...THE

INITIAL INTENSITY IS SET TO 25 KT. ONLY MODERATE SOUTHWESTERLY

SHEAR IS ANTICIPATED TO AFFECT THE CYCLONE FOR THE NEXT FEW

DAYS...SO GRADUAL STRENGTHENING IS FORECAST THROUGH 36-48 HOURS.

LATER IN THE FORECAST PERIOD...THE SHEAR IS EXPECTED TO DIMINISH AS

OPHELIA MOVES THROUGH AN UPPER-LEVEL RIDGE AT SUBTROPICAL

LATITUDES. THIS...ALONG WITH SUFFICIENTLY WARM SEA SURFACE

TEMPERATURES...SHOULD ALLOW OPHELIA TO EVENTUALLY BECOME A

HURRICANE. THE OFFICIAL NHC WIND SPEED FORECAST IS A BLEND OF THE

STATISTICAL-DYNAMICAL DSHIPS AND LGEM GUIDANCE.

THE INITIAL MOTION IS A HIGHLY UNCERTAIN 285/4. OPHELIA IS EXPECTED

TO MOVE AROUND THE SOUTHWESTERN PERIPHERY OF A MID-LEVEL ANTICYCLONE

FOR THE NEXT COUPLE OF DAYS. BY 72 HOURS OR SO...THE FLOW ON THE

SOUTHEAST SIDE OF A LARGE TROUGH NEARING THE U.S. EAST COAST SHOULD

TURN THE TROPICAL CYCLONE TO THE NORTH. THE TRACK OFFICIAL

FORECAST IS QUITE CLOSE TO THE MULTI-MODEL CONSENSUS...TVCN.

FORECAST POSITIONS AND MAX WINDS

INIT 27/2100Z 17.6N 60.5W 25 KT 30 MPH

12H 28/0600Z 18.0N 61.0W 30 KT 35 MPH

24H 28/1800Z 18.7N 61.4W 35 KT 40 MPH

36H 29/0600Z 19.5N 61.6W 40 KT 45 MPH

48H 29/1800Z 21.0N 62.0W 50 KT 60 MPH

72H 30/1800Z 25.0N 63.0W 65 KT 75 MPH

96H 01/1800Z 29.5N 62.5W 75 KT 85 MPH

120H 02/1800Z 37.5N 59.0W 75 KT 85 MPH

$$

FORECASTER PASCH

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Ophelia looks much better organized tonight... The outflow is starting to fight the upper level low to its northwest, and it seems like the outflow is winning as the upper level low is losing definition are starting to open up into a trough. Thus, I think there is an excellent chance Ophelia will become a hurricane at this point. Convectively it doesn't look super impressive right now, and it will have to mix out the dry air in the next 24 hours if it wants to become anything stronger than a category one. If it does, then an ECWMF like solution where the storm intensifies into the 970's is certainly possible.

This storm really is Maria part 2, except its her bigger sister. smile.gif This might seem strange to say, but Ophelia's low level circulation dissipating was the best thing that could have happened to the storm so the mid-level circulation no longer had to fight the low level vortex for convective forcing. It essentially allowed the storm to "reset" and reform under the mid-level circulation and become more vertically stacked again. Had the original llc persisted for maybe another 24 hours, it would have continued to run further into the shear and we wouldn't be talking about "an excellent chance" of hurricane formation.

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Ophelia looks much better organized tonight... The outflow is starting to fight the upper level low to its northwest, and it seems like the outflow is winning as the upper level low is losing definition are starting to open up into a trough. Thus, I think there is an excellent chance Ophelia will become a hurricane at this point. Convectively it doesn't look super impressive right now, and it will have to mix out the dry air in the next 24 hours if it wants to become anything stronger than a category one. If it does, then an ECWMF like solution where the storm intensifies into the 970's is certainly possible.

This storm really is Maria part 2, except its her bigger sister. smile.gif This might seem strange to say, but Ophelia's low level circulation dissipating was the best thing that could have happened to the storm so the mid-level circulation no longer had to fight the low level vortex for convective forcing. It essentially allowed the storm to "reset" and reform under the mid-level circulation and become more vertically stacked again. Had the original llc persisted for maybe another 24 hours, it would have continued to run further into the shear and we wouldn't be talking about "an excellent chance" of hurricane formation.

fascinating system. I find this one far more interesting than most others just because of the processes you described and how poorly the models handled it. Looks like an eye may be about to try to form.

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Outside chance of Cat 3 like the ECWMF is suggesting as well. Who would have thought!

Yep, that would make a few (everyone) in the tropical contest happy, and would promote cheering for your namesake... it would be a Tampa Rays like comeback for September if the extreme verify.

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Ophelia is even stronger now-- 80 kt-- and the forecast track still brings a hurricane into Newfoundland.

How sad is it that Canada is getting more hurricane landfalls this year than the USA and MX combined? Ugh-- just nauseating.

lolz

Expand your horizon more? :D

I want this to be a major now just for the contest.......:arrowhead:

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Ophelia is even stronger now-- 80 kt-- and the forecast track still brings a hurricane into Newfoundland.

How sad is it that Canada is getting more hurricane landfalls this year than the USA and MX combined? Ugh-- just nauseating.

lolz

Newfoundland landfalls FTW!

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Nice... Major #3

INIT  30/1500Z 23.5N  62.8W  100 KT 115 MPH
12H  01/0000Z 25.2N  63.1W  100 KT 115 MPH
24H  01/1200Z 28.5N  63.0W   95 KT 110 MPH
36H  02/0000Z 32.1N  62.2W   90 KT 105 MPH
48H  02/1200Z 37.0N  60.5W   85 KT 100 MPH
72H  03/1200Z 46.0N  52.0W   60 KT  70 MPH...POST-TROP/EXTRATROP
96H  04/1200Z 52.0N  32.0W   40 KT  45 MPH...POST-TROP/EXTRATROP
120H  05/1200Z...DISSIPATED

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