ATL: FOUR - Potential Tropical Cyclone - Discussion

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Re: ATL: FOUR - Potential Tropical Cyclone - Discussion

#201 Postby cycloneye » Fri Aug 19, 2022 7:47 pm

00z Best Track.

AL, 04, 2022082000, , BEST, 0, 213N, 949W, 30, 1009, DB


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Re: ATL: FOUR - Potential Tropical Cyclone - Discussion

#202 Postby ElectricStorm » Fri Aug 19, 2022 8:13 pm

Big pulse down in convection, but I'd assume that's due to DMIN. We'll see if it pulses up again
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Re: ATL: FOUR - Potential Tropical Cyclone - Discussion

#203 Postby AtlanticWind » Fri Aug 19, 2022 8:17 pm

Hammy wrote:NHC notes there is actually zero model support for development so I wonder if they jumped the gun a bit on the 70% chance. Still good to have watches/warnings up either way.



I have seen so many storms in the bay of campeche outperform the modeling so
I have to say I dont blame them for issuing warnings.
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Re: ATL: FOUR - Potential Tropical Cyclone - Discussion

#204 Postby Nimbus » Fri Aug 19, 2022 8:24 pm

ElectricStorm wrote:Big pulse down in convection, but I'd assume that's due to DMIN. We'll see if it pulses up again


The convection is displaced east of the wave axis, there are a lot of recent lightning strikes in a convective burst that will keep this alive overnight. Might even close off into a depression by the time recon gets back out there.
Still some shear from the south although that should change if the high builds southeast far enough.
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Re: ATL: FOUR - Potential Tropical Cyclone - Discussion

#205 Postby jasons2k » Fri Aug 19, 2022 9:23 pm

Not looking so hot tonight...would not be surprised if the center to get tugged NE. Still not stacked.
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Re: ATL: FOUR - Potential Tropical Cyclone - Discussion

#206 Postby Hurricane Mike » Fri Aug 19, 2022 10:31 pm

11pm Video Update on PTC 4 as well as long-range models
https://www.youtube.com/watch?v=NKeUyIBsNEA
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Re: ATL: FOUR - Potential Tropical Cyclone - Discussion

#207 Postby ROCK » Sat Aug 20, 2022 12:09 am

Reminds me of Humberto 07…mid level junk up until landfall… :lol:
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Re: ATL: FOUR - Potential Tropical Cyclone - Discussion

#208 Postby skyline385 » Sat Aug 20, 2022 12:43 am

Decreased to 70/70 now, probably from the lack of convection tonight
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Re: ATL: FOUR - Potential Tropical Cyclone - Discussion

#209 Postby ElectricStorm » Sat Aug 20, 2022 12:55 am

Starting to fire more convection now
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Re: ATL: FOUR - Potential Tropical Cyclone - Discussion

#210 Postby Hammy » Sat Aug 20, 2022 1:10 am

:uarrow: After watching that loop for about five minutes this seems to be the low cloud motion. Any low is well outside of the convection, and at this point I'd say 50% chance of developing. Seems to be mostly a very persistent MLC that for whatever reason is failing to work down to the surface, and it's likely that earlier today was probably the end of it's window.

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Re: ATL: FOUR - Potential Tropical Cyclone - Discussion

#211 Postby Aric Dunn » Sat Aug 20, 2022 2:12 am

Despite the MLC and rotation on satellite.. llc has formed farther east and north.. the MLC will quickly align with the surface reflection. landfall probably around brownsville.

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Re: ATL: FOUR - Potential Tropical Cyclone - Discussion

#212 Postby Aric Dunn » Sat Aug 20, 2022 2:21 am

Aric Dunn wrote:Despite the MLC and rotation on satellite.. llc has formed farther east and north.. the MLC will quickly align with the surface reflection. landfall probably around brownsville.

https://i.ibb.co/JRg1q1s/33333333.png


and just for some reference.. this was about 30 min before the previous image..

the bouy switched from ENE to SSW.

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Re: ATL: FOUR - Potential Tropical Cyclone - Discussion

#213 Postby Aric Dunn » Sat Aug 20, 2022 2:32 am

33mph
gusting to 47..

likely we have a TS now.

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Re: ATL: FOUR - Potential Tropical Cyclone - Discussion

#214 Postby Nimbus » Sat Aug 20, 2022 4:46 am

Aric Dunn wrote:33mph
gusting to 47..

likely we have a TS now.

https://i.ibb.co/SnZ13F5/555555.png


There was one gust of southerly shear to 40 knots on the east side of the system but I doubt its even 20 mph on the west side. Needs to be declared a TD if there is a circulation though.
Still don't know if it is a closed circulation but nice to see it hasn't deepened into something dangerous overnight.
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Re: ATL: FOUR - Potential Tropical Cyclone - Discussion

#215 Postby Hammy » Sat Aug 20, 2022 5:02 am

LLC trying to form on the western edge of the convection, but might be moving too fast to really close the western side. Depending on when the next recon mission is, the end of that mission may be the end of the window this has to get named.

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Re: ATL: FOUR - Potential Tropical Cyclone - Discussion

#216 Postby MHC Tracking » Sat Aug 20, 2022 5:18 am

Hammy wrote:LLC trying to form on the western edge of the convection, but might be moving too fast to really close the western side. Depending on when the next recon mission is, the end of that mission may be the end of the window this has to get named.

https://i.imgur.com/I7dzrRV.png

Strongly doubt this given ML rotation is nowhere near there, with little wind shear I see no reason why the LL rotation and ML rotation would be so far apart
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Re: ATL: FOUR - Potential Tropical Cyclone - Discussion

#217 Postby NDG » Sat Aug 20, 2022 6:33 am

It seems to me some dry light northerly shear is affecting the system this morning.
Tampico is reporting light NW winds this morning.
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Re: ATL: FOUR - Potential Tropical Cyclone - Discussion

#218 Postby NDG » Sat Aug 20, 2022 6:43 am

Hammy wrote:LLC trying to form on the western edge of the convection, but might be moving too fast to really close the western side. Depending on when the next recon mission is, the end of that mission may be the end of the window this has to get named.

https://i.imgur.com/I7dzrRV.png


Radar from Tampico shows it a little further south.

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Re: ATL: FOUR - Potential Tropical Cyclone - Discussion

#219 Postby Iceresistance » Sat Aug 20, 2022 7:54 am

MHC Tracking wrote:
Hammy wrote:LLC trying to form on the western edge of the convection, but might be moving too fast to really close the western side. Depending on when the next recon mission is, the end of that mission may be the end of the window this has to get named.

https://i.imgur.com/I7dzrRV.png

Strongly doubt this given ML rotation is nowhere near there, with little wind shear I see no reason why the LL rotation and ML rotation would be so far apart


The Vorticity appears to be displaced from the system.
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ATL: FOUR - Recon

#220 Postby MHC Tracking » Sat Aug 20, 2022 8:02 am

Not even a semblance of westerlies. I doubt further development.
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