ATL INVEST 91L: Discussion

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gatorcane
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Re: ATL INVEST 91L: Discussion

#121 Postby gatorcane » Fri Sep 12, 2008 1:21 pm

AJC3 wrote:
jlauderdal wrote:we need to get ajc3 on board with this system, he had a good call on hanna surviving when it looked like it could collapse at any minute.



LOL...thx, however like I said earlier, I just don't like the look of the upper air pattern near this system with an upper trough to it's west providing quite a bit of upper tropospheric shear over and around the wave axis, and another upper low to the NW dropping southward.

http://www.ssd.noaa.gov/goes/east/nwatl/loop-wv.html

I'll take a better look at it, and some of the high res model data when I get into work (3 PM) to see if upper conditions look like they might improve. But for now, count me as still saying 'nyet' as far as development into a TC is concerned.


I see what you mean but the NHC is giving it a shot of development but only slow development. The models that develop it (CMC and NAM, not the most reliable I have to admit) wait about 2-3 days. I imagine by then the shear will relax as the ULLs move far enough out of the picture. Of course by then it may not matter as it may be getting close to land by then.

Still development it appears possible but low and slow at best :)
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Re: ATL INVEST 91L: Discussion

#122 Postby CourierPR » Fri Sep 12, 2008 1:39 pm

The NHC seems semi-bullish on this with the call for possible slow development. The bears will be occupied.
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#123 Postby HURAKAN » Fri Sep 12, 2008 1:39 pm

12/1745 UTC 23.0N 70.5W TOO WEAK 91L
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#124 Postby gatorcane » Fri Sep 12, 2008 1:46 pm

To me it looks like the shear may be relaxing a tad as the high clouds are starting to fan out ...the UL to the west is the main player for the shear at the moment:

Image
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Re: ATL INVEST 91L: Discussion

#125 Postby jlauderdal » Fri Sep 12, 2008 1:57 pm

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MIAMI FL
234 PM EDT FRI SEP 12 2008

SYNOPSIS
HIGH PRESS RIDGE OVR WRN ATLANTIC/EASTERN SEABOARD
RIDGING SW THROUGH THE PENINSULA. AREA OF DISTURBED WEATHER EAST
OF THE SOUTHERN BAHAMAS MOVING SLOWLY WESTWARD.



SHORT TERM...TONIGHT THROUGH SATURDAY NIGHT
THE HIGH PRESS
RIDGE WILL BE THE MAIN FEATURE DICTATING THE WEATHER CONDS ACROSS
MAINLAND S. FLORIDA. AS SUCH, MOSTLY EAST WINDS WILL PREVAIL
ACROSS THE AREA. AIRMASS IS ALSO EXPECTED TO BE SLIGHTLY DRIER
THAN IN PREVIOUS DAYS WITH PWAT DECREASING TO ARND 1.55 INCHES BY
SAT NIGHT. WL INDICATE ONLY A SLIGHT CHANCE FOR PRECIP DURING THIS
PERIOD AND WILL BE MAINLY IN THE FORM OF INLAND/WEST SECTIONS
AFTERNOON CONVECTION AND NIGHTTIME EAST COAST. HIGH RISK OF RIP
CURRENTS LIKELY TO CONTINUE THROUGH THIS PERIOD.

SUNDAY THROUGH SUNDAY NIGHT
BOTH GFS AND ECMWF DEVELOP A WEAK
SFC LOW WITHIN THE AREA OF DISTURBED WEATHER MENTIONED ABOVE AND
MOVE IT WEST TO JUST WEST OF ANDROS SUNDAY MORNING AND THEN NWWD
ACROSS SOUTH FLORIDA THROUGH SUNDAY NIGHT. THIS SYSTEM IS BEING
MONITOR BY NHC IN CASE ANY DEVELOPMENT OCCURS, HOWEVER, NEITHER
GFS NOR ECMWF DOES THAT AND SO HERE IT WILL BE TREATED AS A WEAK
DISTURBANCE FOR THE TIME BEING. IN DOING SO, WL INCREASE POPS TO
SCT SHWRS/TSTMS STARTING SUNDAY AND THROUGH SUNDAY NIGHT.
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#126 Postby HurricaneFreak » Fri Sep 12, 2008 2:46 pm

Friday, September 12, 2008



"Some slow development in possible over the next couple of days as it moves slowly west-northwestward," forecasters wrote in an 8 a.m. advisory.


Sound familiar? It should - the blob includes "some of the remnants of Tropical Storm Josephine," forecasters said.

The area of disturbance is not a named storm and is not listed as a weather pattern with an immediate high risk of forming a tropical storm or hurricane, according to NHC officials.

The chance of forming a cyclone in the next 48 hours is considered to be less than 20 percent.

It would likely be three or four days before it affects weather in South Florida. NHC officials plan to send an aircraft over it on Sunday.

~'charles_elmore@pbpost.com
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Re: ATL INVEST 91L: Discussion

#127 Postby Sabanic » Fri Sep 12, 2008 2:57 pm

Seems like just yesterday when Ike was in a similar spot :eek:
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Re: ATL INVEST 91L: Discussion

#128 Postby gtalum » Fri Sep 12, 2008 3:01 pm

Sabanic wrote:Seems like just yesterday when Ike was in a similar spot :eek:


True, but he was a bit more significant, even back then. ;)
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#129 Postby CajunMama » Fri Sep 12, 2008 3:02 pm

NO NO NO NO NO! I'm putting my foot down! No more storms for a couple of weeks. We need some time to regroup!
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Re:

#130 Postby gatorcane » Fri Sep 12, 2008 3:15 pm

CajunMama wrote:NO NO NO NO NO! I'm putting my foot down! No more storms for a couple of weeks. We need some time to regroup!


I hear you...no more for the rest of the season!!! :eek:

Stay safe in LA with Ike

Though I highly doubt this invest ever gets to the size or magnitude of Ike or Hanna for that matter....maybe a depression or sheared TS at best.
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#131 Postby DESTRUCTION5 » Fri Sep 12, 2008 3:25 pm

Our buddy JB..
"
The system now north of Hispaniola does have some potential for development, as it drifts west toward south FLorida"
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Re:

#132 Postby gtalum » Fri Sep 12, 2008 3:26 pm

DESTRUCTION5 wrote:Our buddy JB..
"
The system now north of Hispaniola does have some potential for development, as it drifts west toward south FLorida"


I'm surprised he hasn't forecast a cat 5 into Tampa Bay yet. :lol:
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Re: Re:

#133 Postby DESTRUCTION5 » Fri Sep 12, 2008 3:29 pm

gtalum wrote:
DESTRUCTION5 wrote:Our buddy JB..
"
The system now north of Hispaniola does have some potential for development, as it drifts west toward south FLorida"


I'm surprised he hasn't forecast a cat 5 into Tampa Bay yet. :lol:



LOL.true...From reading him the last two days I can tell he is backing off the craziness because of the natrual Disaster that is about to happen..He is very concerened..
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#134 Postby HURAKAN » Fri Sep 12, 2008 5:12 pm

Image

It's trying to develop at the low levels.
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Re: ATL INVEST 91L: Discussion

#135 Postby blp » Fri Sep 12, 2008 5:25 pm

:uarrow: Indeed. We also have good convergence and divergence. Looks like the ULL is going to keep this in check for now, but it is interesting that a few dynamics are in place.


Image


Image
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Re:

#136 Postby fci » Fri Sep 12, 2008 5:32 pm

gatorcane wrote:To me it looks like the shear may be relaxing a tad as the high clouds are starting to fan out ...the UL to the west is the main player for the shear at the moment:

Image


Looks more like a "Torch" than a "Tropical System". :D

Or maybe a flower in a vase? :P
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Re: Re:

#137 Postby jlauderdal » Fri Sep 12, 2008 5:33 pm

fci wrote:
gatorcane wrote:To me it looks like the shear may be relaxing a tad as the high clouds are starting to fan out ...the UL to the west is the main player for the shear at the moment:

Image


Looks more like a "Torch" than a "Tropical System". :D


more like a bic lighter but maybe a blow torch down the road, :lol:
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Re: ATL INVEST 91L: Discussion

#138 Postby Nimbus » Sat Sep 13, 2008 5:09 am

There is a wave axis about 72W but little convection near the apex this morning.
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Re: ATL INVEST 91L: Discussion

#139 Postby cycloneye » Sat Sep 13, 2008 6:47 am

603
ABNT20 KNHC 131125
TWOAT
TROPICAL WEATHER OUTLOOK
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
800 AM EDT SAT SEP 13 2008

FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO...

THE NATIONAL HURRICANE CENTER IS ISSUING ADVISORIES ON HURRICANE
IKE...LOCATED NEAR HOUSTON TEXAS.

:rarrow: AN AREA OF DISTURBED WEATHER...INCLUDING SOME OF THE REMNANTS OF
TROPICAL STORM JOSEPHINE...IS LOCATED A COUPLE HUNDRED MILES
NORTHEAST OF THE SOUTHEASTERN BAHAMAS. ASSOCIATED SHOWER ACTIVITY
IS LIMITED AND DEVELOPMENT OF THIS SYSTEM...IF ANY...IS EXPECTED TO
BE SLOW TO OCCUR AS IT MOVES WEST-NORTHWESTWARD AT 10 MPH.

SHOWERS AND THUNDERSTORMS ASSOCIATED WITH A TROPICAL WAVE LOCATED
ABOUT 1300 MILES EAST OF THE LEEWARD ISLANDS REMAIN DISORGANIZED.
WHILE UPPER-LEVEL WINDS ARE CURRENTLY UNFAVORABLE FOR
DEVELOPMENT...THEY COULD BECOME A LITTLE MORE FAVORABLE OVER THE
NEXT DAY OR TWO AS THE SYSTEM MOVES WEST-NORTHWESTWARD AT ABOUT 10
MPH.

ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE
NEXT 48 HOURS.

$$
FORECASTER RHOME
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#140 Postby DESTRUCTION5 » Sat Sep 13, 2008 8:15 am

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