Possible Development in the BOC (Is Invest 93L)

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gatorcane
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#81 Postby gatorcane » Sun Oct 19, 2014 1:38 pm

Down to 1002MB at 168 hours on the 12Z ECMWF - maybe subtropical?

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#82 Postby blp » Sun Oct 19, 2014 1:46 pm

gatorcane wrote:Down to 1002MB at 168 hours on the 12Z ECMWF - maybe subtropical?

[]http://i60.tinypic.com/24awz0m.jpg[/img]


Yes Gator different pattern has a stronger low over Nefoundland than 00z.
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#83 Postby gatorcane » Sun Oct 19, 2014 1:49 pm

The dry air over the BOC and southern Gulf that has been entrenched the past few days has moistened up considerably:

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Last edited by gatorcane on Sun Oct 19, 2014 1:50 pm, edited 1 time in total.
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Re: Possible Development in the BOC

#84 Postby boca » Sun Oct 19, 2014 1:50 pm

How would the low over Newfoundland cause the system to be stronger?
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Re: Possible Development in the BOC

#85 Postby blp » Sun Oct 19, 2014 1:52 pm

boca wrote:How would the low over Newfoundland cause the system to be stronger?


No it would cause it to get kicked out quicker. I was referring to it moving out faster not getting trapped.

EDIT: nevermind it gets trapped again.
Last edited by blp on Sun Oct 19, 2014 1:55 pm, edited 1 time in total.
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Re: Possible Development in the BOC

#86 Postby boca » Sun Oct 19, 2014 1:53 pm

Ok thanks I wasnt sure and it makes sense.
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Re: Possible Development in the BOC

#87 Postby gatorcane » Sun Oct 19, 2014 1:58 pm

blp wrote:The 12z UKmet has the low at 144hrs staying in the NW Carribean and left behind. I think the GFS is too quick ejecting it out. Let see what the King has to say.


I think that is yesterday's 12Z (check the image timestamp you are looking which I assume is from meteocentre site). I can't find the latest 12Z.
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#88 Postby gatorcane » Sun Oct 19, 2014 2:06 pm

The GEM model doesn't show much land interaction with Mexico or the Yucatan and makes it quite strong into South Florida at 150 hours which looks like a CAT 1 hurricane. Though usually the GEM is overbullish so not concerned yet.

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Last edited by gatorcane on Sun Oct 19, 2014 2:11 pm, edited 2 times in total.
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Re: Possible Development in the BOC

#89 Postby ronjon » Sun Oct 19, 2014 2:07 pm

Notice the mid-level low diving down from the northern gulf coast on the Euro run. Cowan had a good discussion of this yesterday at tidbits. It's likely to be subtropical with heavy rain threat for Florida.
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Re: Possible Development in the BOC

#90 Postby boca » Sun Oct 19, 2014 2:11 pm

Ronjon do you have the link to the discussion?
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#91 Postby gatorcane » Sun Oct 19, 2014 2:14 pm

12Z GFS ensembles 138 hours from now show a 1004MB low heading ENE, may be trying to eject the area too fast.

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Last edited by gatorcane on Sun Oct 19, 2014 2:18 pm, edited 2 times in total.
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Re: Possible Development in the BOC

#92 Postby blp » Sun Oct 19, 2014 2:15 pm

gatorcane wrote:
blp wrote:The 12z UKmet has the low at 144hrs staying in the NW Carribean and left behind. I think the GFS is too quick ejecting it out. Let see what the King has to say.


I think that is yesterday's 12Z (check the image timestamp you are looking which I assume is from meteocentre site). I can't find the latest 12Z.


You are right what threw me off is at the top on the site ot said 12z run for today. Thanks
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Re: Possible Development in the BOC

#93 Postby gatorcane » Sun Oct 19, 2014 2:21 pm

boca wrote:Ronjon do you have the link to the discussion?


http://www.tropicaltidbits.com/
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#94 Postby gatorcane » Sun Oct 19, 2014 2:27 pm

NWS Miami discussion snippet just released.

.LONG TERM...
THE FORECAST FOR THE MIDDLE TO END OF THE WORK WEEK FOR SOUTH
FLORIDA WILL DEPEND ON THE DISTURBANCE OVER THE SOUTHWEST GULF OF
MEXICO. AT THIS TIME...NHC IS SHOWING A 30 PERCENT CHANCE OF
DEVELOP OF THIS LOW INTO A TROPICAL SYSTEM IN THE NEXT 5 DAYS AS
IT MOVES SLOWLY TO THE EAST NORTHEAST. EVEN IF THIS LOW DOES NOT
DEVELOP INTO A TROPICAL SYSTEM...THE TROPICAL MOISTURE WILL
LIKELY INCREASE OVER THE AREA FROM THE SOUTH. THEREFORE...THE
POPS HAVE BEEN RAISED A LITTLE BIT FOR END OF THIS WEEK INTO
EARLY NEXT WEEK OVER SOUTH FLORIDA.

RESIDENTS AND VISITORS OF SOUTH FLORIDA NEED TO CONTINUE TO
MONITOR THE LATEST FORECAST FROM US AND THE NATIONAL HURRICANE
CENTER ON THE DISTURBANCE OVER SOUTHWEST GULF OF MEXICO THROUGH
THE WEEK


http://forecast.weather.gov/product.php ... glossary=1

NWS Tampa doesn't mention much yet:

AS FOR FORECAST DETAILS...WILL KEEP THE FORECAST RAIN FREE ON MONDAY
NIGHT...THEN SHOW SLIGHT CHANCE AND CHANCE POPS MAINLY FROM THE
TAMPA BAY AREA SOUTHWARD IN CLOSER PROXIMITY TO THE DEEPER MOISTURE
AND SURFACE TROUGH OF LOW PRESSURE TUESDAY THROUGH FRIDAY. WITH THE
POTENTIAL FOR THE DEEPER LAYER MOISTURE AND SURFACE TROUGH TO LIFT
NORTHWARD IN ADVANCE OF THE DIGGING UPPER LEVEL SHORTWAVE
TROUGH...WILL SHOW SLIGHT CHANCE/CHANCE POPS IN ALL AREAS SATURDAY
THROUGH SUNDAY.

http://forecast.weather.gov/product.php ... glossary=1
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Re: Possible Development in the BOC

#95 Postby Blown Away » Sun Oct 19, 2014 2:50 pm

Very rare track to have a TS/Hurricane move from BOC over SFL... Opal was Panhandle... Sheared elongated rainy mess is my guess...
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#96 Postby gatorcane » Sun Oct 19, 2014 3:55 pm

850MB vorticity elongated still but increasing (right along the Mexico coast in the extreme SW BOC):

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#97 Postby gatorcane » Sun Oct 19, 2014 5:08 pm

18Z GFS is stronger and slower than the 12Z. Look at 138 hours:

Time to get an invest tagged on this.

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weather statement

#98 Postby sammy126 » Sun Oct 19, 2014 5:08 pm

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#99 Postby Alyono » Sun Oct 19, 2014 5:19 pm

how tropical is this? That looks like a frontal low based upon the SLP depiction
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#100 Postby gatorcane » Sun Oct 19, 2014 5:19 pm

Down to 998MB heading NE:
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