I see Marco has been forecast to hit the gulf coast as Hurricane now with New Orleans in the firing line for Marco on Monday afternoon and then another Hurricane (Laura) on Wednesday. Crazing to think both tropical storms/hurricanes will make landfall in more or less exactly the same area (Louisiana/Mississippi) only 1 day apart!? hmm. 

Latest on Laura & it's track:

 

Latest on Marco & it's track:

---

I see Marco has been forecast to hit the gulf coast as Hurricane now with New Orleans in the firing line for Marco on Monday afternoon and then another Hurricane (Laura) on Wednesday. Crazing to think both tropical storms/hurricanes will make landfall in more or less exactly the same area (Louisiana/Mississippi) only 1 day apart!? hmm. 

Latest on Laura & it's track:

 

Latest on Marco & it's track:

Gavin P. has been saying in his most recent videos that it is probably very unusual for two different tropical storms/hurricanes to hit the Gulf coast in quick succession, in this fashion.

Because of that, I am wondering whether or not, anyone knows if that has happened before and if so, when that last happened.

 

---

Laura have conditions to be a Major Hurricane once passes Cuba

---

 

Gavin P. has been saying in his most recent videos that it is probably very unusual for two different tropical storms/hurricanes to hit the Gulf coast in quick succession, in this fashion.

Because of that, I am wondering whether or not, anyone knows if that has happened before and if so, when that last happened.

 

"The only other time in recorded history where two tropical systems made simultaneous landfall was September 5, 1933, according to researcher Philip Klotzbach in a tweet Thursday. One was a tropical storm and the other a hurricane."

https://www.wdbj7.com/2020/08/21/two-hurricane-landfalls-on-the-same-day-its-possible/

Weather map in the link - but in 1933 one was a TS and the other a hurricane, so if both Laura and Marco make landfall as hurricanes within 24 hours of each other it would be unprecedented. But latest forecast show landfalls about 48 hours apart - however both in the same place, the Mississippi delta, and that seems to be unique.

More records here
https://www.ksat.com/weather/2020/08/21/have-there-ever-been-two-hurricanes-in-the-gulf-of-mexico-at-the-same-time/

---

Laura have conditions to be a Major Hurricane once passes Cuba

Still only forecast to be a Cat 1

 

---

The forecast was yesterday's but thought I would share:

Looks like the two High pressure systems to the east of USA and to the north west would squeeze both Laura and Marco between them into the same route/direction like a sandwich.

---

Laura have conditions to be a Major Hurricane once passes Cuba

 

True only a day ago neither Tropical Storms were forecast to reach 'hurricane' status. Now as from late last night and today both Marco and LAURA are forecast to become hurricanes albeit weak cat 1 Hurricanes. But equally they may get down graded back to tropical storms or upgraded so who knows!? The track is still uncertain. However the SST's in the Gulf are very warm 32'c water temp!? - Ideal for these tropical storms to strengthen over warm waters esp if they slow down. 

Winds may not be an issue but flooding would especially given there will be one after another hitting the same part of the gulf coast within 2 days also many parts of Louisiana are underwater anyway so flooding will be a big issue there esp along the Mississippi river.

---

While Marco speeds toward the northern GoM coast, Laura's playing a longer and potentially much more dangerous game.

It was barely bothered by the high terrain of Haiti & Dominican Republic, likely due to having a broad circulation with enough of a flow into the mountains from the south side to sustain strong uplift. The deep thunderstorm coverage and intensity has been impressive today.

https://twitter.com/TheSteveCop/status/1297583110532542466

This radar loop shows the centre of Laura tracking WNW on a path that will soon take it on a close pass to eastern Cuba.

At that point, the exact path of the core will be critical. There are HUGE mountains along that distinctive straight section of eastern Cuba. If the core stays south of there, piling up of air near-surface should allow Laura to maintain intensity or even strengthen.

On the other hand, if it heads right onto the mountains, it will likely be destroyed, leaving Laura with the task of generating a new one somewhere within its broad circulation. Such a large system should be capable of that, so it's looking a tall order for Laura to be destroyed.

As it reaches the GoM, conditions are expected to be highly conducive to intensification, easily supportive of a major hurricane.

Storms that track south of Cuba and then into the GoM can be especially powerful, having had a lot of time to organise over the Caribbean before tapping into the broader waters of the Gulf, often benefiting from a cross over the Gulf Stream along the way.

This year, there looks to be a broad eddy loop to add to the equation. This being something that occasionally splits away from the Gulf Stream. Clearly visible in the Ocean Heat Content analysis - it's a big deal, even if it can't rival the extreme amounts that are being observed in the north-western Caribbean these days.

---

Sea temps in the GOM are in the mid to high 80's, plenty of fuel for Laura.

The NHC are saying Cat 2 when it makes landfall atm.

Thanks Stormchaser. Great analysis and always easy to follow. Have you seen the "Gathering Storm" series on National Geographic Channel? Great documentary series

Marco seems to be up to DK 4

https://www.ssd.noaa.gov/PS/TROP/storms/MARCO.html

 

 

---

Uh....welp. Recon just found flight-level winds of 72kt and SFMR winds around 56kt to the northeast of #Laura's center. pic.twitter.com/YCWUi9LifB

— Cody Fields 🥁 (@wxtrackercody) August 23, 2020

---

Forecast of track and intensity still varying and throwing up queries about unusual behaviour, never mind the unique feature of two hurricanes in the Gulf simultaneously.

Marco now expected to make landfall late Monday near Mississippi delta and to run westwards along Louisiana coast. Marco is now a hurricane but forecast to decline to TS or maybe just hang on to Cat 1 status (Why, with all that lovely warm water in the Gulf should it decline?)

Laura expected to escape from the clutches of Cuban mountains (I've read Stromchaser's excellent analysis above but it's the first TS/hurricane I can remember not to be broken up by such a direct contact with land) and make its way across the Gulf to make landfall just west of the Delta late Wednesday (but that track overlaps Marco's - won't Marco have used up the heat energy in that patch of ocean, to the detriment of Laura? It's happened before) after which Laura swings NE-ly up the Mississippi and Ohio valleys (If there's any steering effect, why are Marco and Laura going in different directions? A version of Fujiwara effect?)

Remnants of Laura should be out on the Atlantic next weekend, so watch for their effect on UK weather sometime in the first week of September

---

 

Still only forecast to be a Cat 1

 

That will Change soon the SST are favorable, the amount of moisture and the lack of dry air intrusion in the Laura's Path, should give a safe way to strenghning .

Satélite Laura

Notice that the cyclonic curveture is there despite the Cuba mountains Impact and its sllides just a few 100miles futher south the system Will organize quickly and keep up the Pace for a potential Cat 3 or Higher...

Let's wait...

---

Forecast of track and intensity still varying and throwing up queries about unusual behaviour, never mind the unique feature of two hurricanes in the Gulf simultaneously.

Marco now expected to make landfall late Monday near Mississippi delta and to run westwards along Louisiana coast. Marco is now a hurricane but forecast to decline to TS or maybe just hang on to Cat 1 status (Why, with all that lovely warm water in the Gulf should it decline?)

Laura expected to escape from the clutches of Cuban mountains (I've read Stromchaser's excellent analysis above but it's the first TS/hurricane I can remember not to be broken up by such a direct contact with land) and make its way across the Gulf to make landfall just west of the Delta late Wednesday (but that track overlaps Marco's - won't Marco have used up the heat energy in that patch of ocean, to the detriment of Laura? It's happened before) after which Laura swings NE-ly up the Mississippi and Ohio valleys (If there's any steering effect, why are Marco and Laura going in different directions? A version of Fujiwara effect?)

Remnants of Laura should be out on the Atlantic next weekend, so watch for their effect on UK weather sometime in the first week of September

Marco was expected to hit quite a high amount of shear at about 500mb and this was the reason it would not strengthen. In fact as it hits the gulf coast that shear should be seriously impacting the storm. I don’t think Laura is expected to have the same amount of shear, but it’s a fluid situation. 

Marco Has weakened to a TS I heard as Laura has strengthen and would reach a strong cat 2 before or when making landfall as it will slip to south of cuba instead of over cuba so it will be over warm water longer and then of course has the Gulf for it to strengthen. 

---

MArco being sheered to death but will still be a big rain maker

But should be less sheer when Laura gets in the same area

---

As forecast Laura has survived the interaction with Cuba relatively unscathed. With very warm water, light shear and a fairly slow forward velocity Laura will become a near major hurricane before landfall in the TX/LA border area Weds pm local.

---

As forecast Laura has survived the interaction with Cuba relatively unscathed. With very warm water, light shear and a fairly slow forward velocity Laura will become a near major hurricane before landfall in the TX/LA border area Weds pm local.

 

Yes - Just checked on NOAA, Laura is taking a more westerly tracked and has slowed down a few mph giving it more time to gain strength. It is now is forecast to make landfall as a cat 3 (Major) hurricane:

---

Laura now a hurricane 75mph, expected to bomb now with near perfect conditions

---

Brand new microwave pass shows an intense curved band wrapping into the center of #Laura with a possible "hot tower" developing near the core.

Starting to believe that we may see more robust intensification today than initially thought. pic.twitter.com/YUxeV6LEFj

— Steve Copertino (@TheSteveCop) August 25, 2020

---