Waves, lows around the globe

[arkestra]

I've been watching the tropics in here for almost three years here on Storm2k. And for some months I have this question about waves having a nice time close to the equator: Is it possible that somehow we can find the same "system" crossing multiple basins. For example, a lot of Cape Verde waves cross Africa, and probably some of them come from the Indian ocean. Dolly is a good example for this: the system emerged late but we were tracking it for a long time.

As I see things, as long as the system manages to deal with the Coriolis effect, it can almost make it to cross the whole globe. Am I wrong?

[Chacor]

I'm assuming you're talking only about the northern hemisphere, since the South Atlantic and the South Pacific near the west coast of S.Am. are very hostile to tropical systems (and there is more land to contend with).

[RL3AO]

In theory, a tropical cyclone could go from the West Coast of Africa to the Middle East (Oman/Iran/Yemen) by crossing the Atlantic, Central America, Pacific, SE Asia, Bay of Bengal, India, Arabian Sea, and then to the Middle East.

Of course in reality, it will never happen because it would have to stay around 10N that entire trip.

I think the closest we will be able to get will be something like Felix surviving the trip across Central America and then making it a good way across the Pacific.

[Cyclone1]

In theory, a tropical cyclone could go from the West Coast of Africa to the Middle East (Oman/Iran/Yemen) by crossing the Atlantic, Central America, Pacific, SE Asia, Bay of Bengal, India, Arabian Sea, and then to the Middle East.

Of course in reality, it will never happen because it would have to stay around 10N that entire trip.

I think the closest we will be able to get will be something like Felix surviving the trip across Central America and then making it a good way across the Pacific.

I agree, I'd say Joan-Miriam, or maybe Cesar-Douglas would be a good example of as far as we can get.

[Cyclenall]

The OP is talking about just the tropical wave, not a tropical cyclone making it through all the basins. So can a tropical wave or similar make it across the planet is the question.

[Squarethecircle]

Here's the thing: each part of the necessary basin-connecting tracks has been made (from Africa as a tropical wave to the Atlantic, to the EPAC, and from there to the WPAC, from there to the BoB, and from there to the Arabian Sea). So it could be possible for it to happen. HOWEVER, it would have to find just the right crossing-spaces, it would have to avoid harsh conditions every step of the way, it would most likely have to hit in a short 3 week span that represented peaks of all of the basins, and it would have to do it without a single break in the plan. So, pretty much, no, it would never happen. Even a tropical wave would have to go through the same rigorous course and would also not survive. If a TC did make it, its ACE alone would be larger than the large majority of Atlantic seasons (probably EPAC seasons as well, and a good deal of WPAC seasons).

[RL3AO]

If a TC did make it, its ACE alone would be larger than the large majority of Atlantic seasons (probably EPAC seasons as well, and a good deal of WPAC seasons).

Probably not. To even have a 0.00000000000001% chance to do it, it would need to stay so weak to not get pulled north.

[Squarethecircle]

If a TC did make it, its ACE alone would be larger than the large majority of Atlantic seasons (probably EPAC seasons as well, and a good deal of WPAC seasons).

Probably not. To even have a 0.00000000000001% chance to do it, it would need to stay so weak to not get pulled north.

Are you complaining about the ACE thing? Because it would need to spend a good while longer than the record at major or higher to survive land. I also said it was impossible.

[Cyclone1]

If a TC did make it, its ACE alone would be larger than the large majority of Atlantic seasons (probably EPAC seasons as well, and a good deal of WPAC seasons).

Probably not. To even have a 0.00000000000001% chance to do it, it would need to stay so weak to not get pulled north.

Are you complaining about the ACE thing? Because it would need to spend a good while longer than the record at major or higher to survive land. I also said it was impossible.

Actually, while I see your point, I would calculate teh ACE of a tropical cyclone making it around the world (or from West Africa to East Africa) would be about maybe 40-50 honestly. It would have to remain a tropical depression for so long to keep from being pulled north that a lot of it's life wouldn't even contribute to it's ACE. Pretty much agreeing with what RL3AO is saying.

Although yeah, it's more-or less impossible.

[fasterdisaster]

I wouldn't call it impossible. Strange things have happened in the tropics, and I can pretty much guarantee it will happen one day. Maybe not in our lifetimes, but one day it will happen.

[arkestra]

I'm not only talking about a crazy hurricane/typhoon/cyclone. I was also talking about "what we don't see", like a low pressure which develops sometimes in some places, then become a remnant low (or even just some clouds), and deepens again. And it looks more credible to me if it's a small "system" (because such a "system" cannot develop very much as it must stay around 10N).

For example, a former invest in the Indian ocean can cross the Atlantic as a hurricane, become a remnant until the WPAC, and develop again there. CV hurricanes find their genesis well inside Africa.


(Actually, where in Africa these famous African waves form?)

[RL3AO]

(Actually, where in Africa these famous African waves form?)

I think they are just disturbances in the ITCZ over Eastern Africa, but I'm sure wxman57 (I see you in the who is online) can correct me if I'm wrong.

[arkestra]

I found Katrina, Victor and Cindy 1997-1998. The three are from the same "thing", and lasted 50 days in total, from North Australia to the Mauritius Island.

[Recurve]

I'd point out the obvious that lows at high latitudes can go a long way, I don't know about around the world, but of course the distance is shorter.