ATL: FOUR - Potential Tropical Cyclone - Discussion

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ATL: INVEST 99L - Discussion

#61 Postby skyline385 » Fri Aug 19, 2022 9:53 am

Special TWO issued

60/60

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Re: ATL: INVEST 99L - Discussion

#62 Postby InfernoFlameCat » Fri Aug 19, 2022 9:58 am

Looking good. It also looked good when it splashed into the BOC because the system was stacked. Now it has convection along with it. I wonder if it could rapidly deepen? Most likely not but maybe.
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Re: ATL: INVEST 99L - Discussion

#63 Postby SouthDadeFish » Fri Aug 19, 2022 10:00 am

Greetings, friends.

At this rate, I wouldn't be surprised if today's recon mission finds a TC. Small system + notoriously favorable genesis location = potential for quick spin-up. Thankfully, 99L probably doesn't have much time to strengthen too significantly. Very interesting that guidance has been awful with the current development so far.
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Re: ATL: INVEST 99L - Discussion

#64 Postby South Texas Storms » Fri Aug 19, 2022 10:04 am

SouthDadeFish wrote:Greetings, friends.

At this rate, I wouldn't be surprised if today's recon mission finds a TC. Small system + notoriously favorable genesis location = potential for quick spin-up. Thankfully, 99L probably doesn't have much time to strengthen too significantly. Very interesting that guidance has been awful with the current development so far.


Yep, not surprised at all. The Bay of Campeche is notorious for quick spin-up TCs. I would expect the NHC to upgrade it later today.
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Re: ATL: INVEST 99L - Discussion

#65 Postby SoupBone » Fri Aug 19, 2022 10:05 am

South Texas Storms wrote:
SouthDadeFish wrote:Greetings, friends.

At this rate, I wouldn't be surprised if today's recon mission finds a TC. Small system + notoriously favorable genesis location = potential for quick spin-up. Thankfully, 99L probably doesn't have much time to strengthen too significantly. Very interesting that guidance has been awful with the current development so far.


Yep, not surprised at all. The Bay of Campeche is notorious for quick spin-up TCs. I would expect the NHC to upgrade it later today.



Do you have two accounts or something? :lol:

You guys have similar names.
Last edited by SoupBone on Fri Aug 19, 2022 10:06 am, edited 1 time in total.
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Re: ATL: INVEST 99L - Discussion

#66 Postby Aric Dunn » Fri Aug 19, 2022 10:05 am

SouthDadeFish wrote:Greetings, friends.

At this rate, I wouldn't be surprised if today's recon mission finds a TC. Small system + notoriously favorable genesis location = potential for quick spin-up. Thankfully, 99L probably doesn't have much time to strengthen too significantly. Very interesting that guidance has been awful with the current development so far.


Does not help that for the last many days all the vorticity/surface analysis data was way off. everything kept showing it well to the south of the actual wave axis. Which barely scraped Honduras and was over water. All the while the models kept the vorticity well inland over the mountains.
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Re: ATL: INVEST 99L - Discussion

#67 Postby ScottNAtlanta » Fri Aug 19, 2022 10:06 am

I just want to stress that the shape of the coastline in the BOC promotes spin. We have many a storm spin up quickly here. I'm really puzzled by the models. They usually get somewhat better when there is actually something there. Obviously the NHC sees something since they raised the probabilities over 40% the last couple of days (from 20 to 60)
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Re: ATL: INVEST 99L - Discussion

#68 Postby Iceresistance » Fri Aug 19, 2022 10:07 am

SoupBone wrote:
South Texas Storms wrote:
SouthDadeFish wrote:Greetings, friends.

At this rate, I wouldn't be surprised if today's recon mission finds a TC. Small system + notoriously favorable genesis location = potential for quick spin-up. Thankfully, 99L probably doesn't have much time to strengthen too significantly. Very interesting that guidance has been awful with the current development so far.


Yep, not surprised at all. The Bay of Campeche is notorious for quick spin-up TCs. I would expect the NHC to upgrade it later today.



Do you have two accounts or something? :lol:

You guys have similar names.

Similar, but not the same

SouthDadeFish is in Miami, FL, while South Texas Storms is true to it's location; Southern Texas, in Houston.
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Re: ATL: INVEST 99L - Discussion

#69 Postby ScottNAtlanta » Fri Aug 19, 2022 10:08 am

Also, whether this develops or not, there will be a big slug of tropical moisture that gets trapped by the frontal boundary which will enhance the rain even more. There is some flooding potential that people need to be aware of.
Also just checked buoy data from the BOC and winds have shifted from the E to the NE which would be consistent to where 99L is located
Last edited by ScottNAtlanta on Fri Aug 19, 2022 10:16 am, edited 1 time in total.
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Re: ATL: INVEST 99L - Discussion

#70 Postby SoupBone » Fri Aug 19, 2022 10:08 am

Iceresistance wrote:
SoupBone wrote:
South Texas Storms wrote:
Yep, not surprised at all. The Bay of Campeche is notorious for quick spin-up TCs. I would expect the NHC to upgrade it later today.



Do you have two accounts or something? :lol:

You guys have similar names.

Similar, but not the same

SouthDadeFish is in Miami, FL, while South Texas Storms is true to it's location; Southern Texas, in Houston.


That was the joke.
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Re: ATL: INVEST 99L - Discussion

#71 Postby skyline385 » Fri Aug 19, 2022 10:11 am

Convection building up, pink towers incoming through the center in the last frame.

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Re: ATL: INVEST 99L - Discussion

#72 Postby Tailgater33 » Fri Aug 19, 2022 10:13 am

The buoy just NW of the invest is saying meh, pressure drops over the last 24hrs are minor. So no rapid deepening but it does look to be organizing with weak feeder bands visible
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Re: ATL: INVEST 99L - Discussion

#73 Postby weeniepatrol » Fri Aug 19, 2022 10:14 am

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Re: ATL: INVEST 99L - Discussion

#74 Postby ScottNAtlanta » Fri Aug 19, 2022 10:17 am

Tailgater33 wrote:The buoy just NW of the invest is saying meh, pressure drops over the last 24hrs are minor. So no rapid deepening but it does look to be organizing with weak feeder bands visible

Yes, but it has shown a wind shift from the E to the NE in the last hour
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Re: ATL: INVEST 99L - Discussion

#75 Postby Aric Dunn » Fri Aug 19, 2022 10:19 am

ScottNAtlanta wrote:
Tailgater33 wrote:The buoy just NW of the invest is saying meh, pressure drops over the last 24hrs are minor. So no rapid deepening but it does look to be organizing with weak feeder bands visible

Yes, but it has shown a wind shift from the E to the NE in the last hour


When pressures fall locally it takes a little time to propagate and be measured in the surrounding area.
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Re: ATL: INVEST 99L - Discussion

#76 Postby skyline385 » Fri Aug 19, 2022 10:22 am

Tailgater33 wrote:The buoy just NW of the invest is saying meh, pressure drops over the last 24hrs are minor. So no rapid deepening but it does look to be organizing with weak feeder bands visible

It’s pretty tiny and the core (if it were to form) would be very small as well, don’t think its going to be detected by buoys this early.


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Re: ATL: INVEST 99L - Discussion

#77 Postby ScottNAtlanta » Fri Aug 19, 2022 10:25 am

That ULL over Mexico has also been moving west. You can see the flow moving from the SW to S.
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Re: ATL: INVEST 99L - Discussion

#78 Postby weeniepatrol » Fri Aug 19, 2022 10:27 am

Signs of weak surface westerly inflow
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Re: ATL: INVEST 99L - Discussion

#79 Postby BobHarlem » Fri Aug 19, 2022 10:30 am

Current Visible
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Re: ATL: INVEST 99L - Discussion

#80 Postby tropicwatch » Fri Aug 19, 2022 10:31 am

Hurricane Hunters were supposed to take off about 15 minutes ago. Haven't seen any indication that they have yet.
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