ATL: ISAIAS - Post-Tropical - Discussion

[sma10]

There is such a huge plume of Moisture wrapping around to the east and North side of this throughout the day. SAL does not stand a chance.

Are the storms that are forming to the east and SE, actually the beginning of feeder bands?

[GCANE]

There is such a huge plume of Moisture wrapping around to the east and North side of this throughout the day. SAL does not stand a chance.

I don't think I have seen such a deep infeed before.
Coming all the way from the Amazon River.

[SFLcane]

Consolidating nicely throughout the day. Convection gradually building around the center. looks to be setting up a good convective burst overnight. https://re.ssec.wisc.edu/s/P1uEpG

https://i.ibb.co/mtm8W2j/LABELS-19700101-000000-7.gif

I am with you... let’s see what it does.

[Aric Dunn]

Here is how it will play out.. over the next several hour's convection continues to build. we wake up in the morning and there is a huge blob of convection. we already know the wind field is closed. but everyone is waiting and refreshing the ASCAT images..

then come noon we are all going be saying "this is soo a TD".. then the 2pm TWO says if trends continue advisories will be initiated later today.

Or sooner.. who knows lol

[Evil Jeremy]

It is looking notably more consolidated by the hour.

[tiger_deF]

Is there any precedent for a system forming from such a massive tropical wave? I can't remember seeing anything like this

[aspen]

What an absolute Chungus of an Invest. Convection is looking more centralized today, but I only anticipate slow development and strengthening for the next 3-4 days.

[abajan]

Is there any precedent for a system forming from such a massive tropical wave? I can't remember seeing anything like this

I think Hurricane Gustav in 1990 formed from a pretty massive wave. But I could be wrong.

[alan1961]

LLC just about in the centre of this large circulation.

[St0rmTh0r]

There is such a huge plume of Moisture wrapping around to the east and North side of this throughout the day. SAL does not stand a chance.

I don't think I have seen such a deep infeed before.
Coming all the way from the Amazon River.

Wow that's amazing! The circulation is soooooo massive it's like a giant vaccum sucking up moisture.

[St0rmTh0r]

[quote="alan1961"]LLC just about in the centre of this large circulation.

https://img.techpowerup.org/200727/92l.jpg[/quote
I just cant get over the size of this it's like something out of a disaster movie brewing together.

[AnnularCane]

Not much convection, but 92L is looking beautiful right now.

[cycloneye]

Here is how it will play out.. over the next several hour's convection continues to build. we wake up in the morning and there is a huge blob of convection. we already know the wind field is closed. but everyone is waiting and refreshing the ASCAT images..

then come noon we are all going be saying "this is soo a TD".. then the 2pm TWO says if trends continue advisories will be initiated later today.

Or sooner.. who knows lol

You forgot the recon for Tuesday afternoon.

[SouthDadeFish]

Not much convection, but 92L is looking beautiful right now.

Actually not too bad for diurnal minimum:

 https://twitter.com/MikeFischerWx/status/1287855139647356929

[HurricaneAndre2008]

92L crossing the magical 50W line. That's what's going to get things started.

[Aric Dunn]

Here is how it will play out.. over the next several hour's convection continues to build. we wake up in the morning and there is a huge blob of convection. we already know the wind field is closed. but everyone is waiting and refreshing the ASCAT images..

then come noon we are all going be saying "this is soo a TD".. then the 2pm TWO says if trends continue advisories will be initiated later today.

Or sooner.. who knows lol

You forgot the recon for Tuesday afternoon.

We have recon ?? sweet well then we are al set.. lol

[St0rmTh0r]

Not much convection, but 92L is looking beautiful right now.

Can anyone chime in and really give us a breakdown of what to expect? This circulation of this is so large it ca. Create it's own environment. Obviously if it does t develop good but what if it blows up? Surely it would have an effect on the ridge not to mention influence other environmental factors around it.

[EquusStorm]

Just really still reeling over how ridiculously massive this is, along with Hanna apparently WPac storms have lost their way and think this is that basin and that's why the WPac has been so quiet

Does seem as though with a circulation that big it would take time to coalesce and tighten. Also, I wonder if the moisture envelope from a wave this big will help the wave following it, maybe putting a small dent in the massive SAL plume if that wave stays south

[hurricanes1234]

An interesting question about diurnal maximum and minimum: I've read that diurnal minimum over the ocean is during the hours of peak insolation when the temperature difference between the sea and the atmosphere is the least, and diurnal maximum is during the dark hours when the temperature difference between the sea and the atmosphere is the highest (due to the sea remaining warm at night because of how slowly water cools). But I've also seen that diurnal minimum is around sunset and diurnal maximum is around sunrise.

I noticed the former with Gonzalo specifically, during the morning hours, its convection began to decrease somewhat whereas during the evening hours after dark, it would flare up again till sunrise.

Which one is true? It's possible I may have confused the two a bit so apologies if they're way off.

[Aric Dunn]

This is the type of system that will change the flow in the carrib.. so no need to worry about the graveyard... this is the type of system that would barrel over Hispaniola and say "that tickled" ( i.e Hurricane Georges).

The type of system the would dominate and do some serious ridge pumping.... would take a large scale synoptic system to really move it.

If it becomes a Hurricane we are talking possible Typhoon Tip size..