ATL: LAURA - Post-Tropical - Discussion

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rigbyrigz
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Re: ATL: LAURA - Tropical Storm - Discussion

#1941 Postby rigbyrigz » Fri Aug 21, 2020 11:44 pm

ConvergenceZone wrote:
CrazyC83 wrote:
Weather Dude wrote:wow NHC has it going right over the islands, yet still getting to hurricane strength in the gulf...interesting


As long as there is somewhat of a core when it leaves Cuba, the environment favors significant, possibly rapid, intensification. If a solid core exists there, look out.


Hey CrazyC83, I have a question, why is it that I've others as well mention that this could strengthen quickly in the Gulf, yet T14 will be entering the gulf and the NHC doesn't have that one strengthen very fast at all, even has it weakening prior to landfall? Just curious what the difference between the two are?

Don't want to answer for C83, but you might be interested to know that NHC and others mentioned the Western Gulf will have high shear associated with a strong upper level trough, which won't be what Laura runs into. Both have plenty of warm water (high 80's off the BigBend today) but thats the apparent difference.
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Re: ATL: LAURA - Tropical Storm - Discussion

#1942 Postby FLpanhandle91 » Fri Aug 21, 2020 11:46 pm

00z HWRF seems to be biting on the LLC Aric is pointing out east of St. Croix.
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Re: ATL: LAURA - Tropical Storm - Discussion

#1943 Postby Keldeo1997 » Fri Aug 21, 2020 11:49 pm

Image

:double:
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Re: ATL: LAURA - Tropical Storm - Discussion

#1944 Postby Cat5James » Fri Aug 21, 2020 11:53 pm

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Re: ATL: LAURA - Tropical Storm - Discussion

#1945 Postby Keldeo1997 » Fri Aug 21, 2020 11:55 pm



The LLC may have just reformed NNE of where it was before
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Re: ATL: LAURA - Tropical Storm - Discussion

#1946 Postby Cat5James » Fri Aug 21, 2020 11:57 pm

Keldeo1997 wrote:


The LLC may have just reformed N of where it was before

and I was just about to call it a night...
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Re: ATL: LAURA - Tropical Storm - Discussion

#1947 Postby Hammy » Fri Aug 21, 2020 11:59 pm

Laura's starting to look like a somewhat sheared tropical cyclone rather than a disjointed mess.

Image
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Re: ATL: LAURA - Tropical Storm - Discussion

#1948 Postby Cat5James » Fri Aug 21, 2020 11:59 pm

Keldeo1997 wrote:


The LLC may have just reformed NNE of where it was before

Theres a large burst of convection and very cold cloud tops in that area... interesting
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Re: ATL: LAURA - Tropical Storm - Discussion

#1949 Postby captainbarbossa19 » Sat Aug 22, 2020 12:01 am

Cat5James wrote:
Keldeo1997 wrote:
Cat5James wrote:What is the implication here?


The LLC may have just reformed N of where it was before

and I was just about to call it a night...


Based on the surface winds of this map, the center appears to be more towards the WNW of where it was at 0z.
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Re: ATL: LAURA - Tropical Storm - Discussion

#1950 Postby Aric Dunn » Sat Aug 22, 2020 12:04 am

Alrighty here we go..

St Croix has switched to NW/NNW .. we have a closed circ with deep convection building. heading just north of due west. probably will pop north of PR overnight from land interaction..

looks like finally models will have a good center to start with for 6 and 12z tomororw.

Image
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Re: ATL: LAURA - Tropical Storm - Discussion

#1951 Postby Hypercane_Kyle » Sat Aug 22, 2020 12:05 am

Looks like we've got another COC relocation on our hands.
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Re: ATL: LAURA - Tropical Storm - Discussion

#1952 Postby Cat5James » Sat Aug 22, 2020 12:07 am

Aric Dunn wrote:Alrighty here we go..

St Croix has switched to NW/NNW .. we have a closed circ with deep convection building. heading just north of due west. probably will pop north of PR overnight from land interaction..

looks like finally models will have a good center to start with for 6 and 12z tomororw.

https://i.ibb.co/CBZSgjz/Capture.png

The LLC could be starting to align with the mid level circulation
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Re: ATL: LAURA - Tropical Storm - Discussion

#1953 Postby rigbyrigz » Sat Aug 22, 2020 12:09 am

Even to the non-expert eye (here) the current San Juan radar sure looks like a huge and encircling blow-up underway right now... https://radar.weather.gov/radar.php?pro ... A&loop=yes
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Re: ATL: LAURA - Tropical Storm - Discussion

#1954 Postby CrazyC83 » Sat Aug 22, 2020 12:12 am

ConvergenceZone wrote:
CrazyC83 wrote:
Weather Dude wrote:wow NHC has it going right over the islands, yet still getting to hurricane strength in the gulf...interesting


As long as there is somewhat of a core when it leaves Cuba, the environment favors significant, possibly rapid, intensification. If a solid core exists there, look out.


Hey CrazyC83, I have a question, why is it that I've others as well mention that this could strengthen quickly in the Gulf, yet T14 will be entering the gulf and the NHC doesn't have that one strengthen very fast at all, even has it weakening prior to landfall? Just curious what the difference between the two are?


When Marco gets there, it is likely that the trough will be in the process of retreating. The trough adds shear. But by midweek, all indications are that the trough will be gone.
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Re: ATL: LAURA - Tropical Storm - Discussion

#1955 Postby Hurricane Mike » Sat Aug 22, 2020 12:19 am

Laura looks a tiny bit better.
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Re: ATL: LAURA - Tropical Storm - Discussion

#1956 Postby Hurricaneman » Sat Aug 22, 2020 12:25 am

Hammy wrote:Laura's starting to look like a somewhat sheared tropical cyclone rather than a disjointed mess.

https://i.imgur.com/chaIYia.png


Also looking at animated satellite maps, it’s on the SW edge of the convection and there seems to be convection growing on the SW side of the circulation based on cloud movement, starting to stack, could look quite different in the morning
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Re: ATL: LAURA - Tropical Storm - Discussion

#1957 Postby Keldeo1997 » Sat Aug 22, 2020 12:28 am

Image

Well look what we got here
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Re: ATL: LAURA - Tropical Storm - Discussion

#1958 Postby Hammy » Sat Aug 22, 2020 12:28 am

Hurricaneman wrote:
Hammy wrote:Laura's starting to look like a somewhat sheared tropical cyclone rather than a disjointed mess.

https://i.imgur.com/chaIYia.png


Also looking at animated satellite maps, it’s on the SW edge of the convection and there seems to be convection growing on the SW side of the circulation based on cloud movement, starting to stack, could look quite different in the morning


Last few frames show some degree of outflow building as well--relative to the center, the high clouds are now starting to blow out of the southeast rather than the south.
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Re: ATL: LAURA - Tropical Storm - Discussion

#1959 Postby FLpanhandle91 » Sat Aug 22, 2020 12:29 am

To my untrained eye I'd say center is around 17.5N 64.1W
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Re: ATL: LAURA - Tropical Storm - Discussion

#1960 Postby psyclone » Sat Aug 22, 2020 12:29 am

the system is looking....less bad. let's see if this is the start of a trend or another fake out. At least it's coming into PR radar view..
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