2020 Global Model Runs Discussion (Out thru day 16)

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Ubuntwo
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Re: 2020 Global Model Runs Discussion (Out thru day 16)

#1381 Postby Ubuntwo » Sat Aug 15, 2020 3:33 pm

gfsperpendicular wrote:
Kingarabian wrote:
SFLcane wrote:Long range cmc portraying a Irma type track. :eek:

[url]https://cdn1.bbcode0.com/uploads/2020/8/15/6d9f90de70bc82980298ea0a5f611666-full.gif[url]


Pretty believable IMO. Atlantic "switch" usually flips to "On" in that time frame. Even if the GFS and Euro don't show it, the CMC has become a solid model and I think the GFS and Euro will eventually show it.


This happened with Gonzalo, right? I definitely hesitate to throw away the CMC this year.

The 12z CMC corroborates pretty well with the 12z EPS, so it's 100% something to watch.
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Re: 2020 Global Model Runs Discussion (Out thru day 16)

#1382 Postby NDG » Sat Aug 15, 2020 4:03 pm

gfsperpendicular wrote:
Kingarabian wrote:
SFLcane wrote:Long range cmc portraying a Irma type track. :eek:

[url]https://cdn1.bbcode0.com/uploads/2020/8/15/6d9f90de70bc82980298ea0a5f611666-full.gif[url]


Pretty believable IMO. Atlantic "switch" usually flips to "On" in that time frame. Even if the GFS and Euro don't show it, the CMC has become a solid model and I think the GFS and Euro will eventually show it.


This happened with Gonzalo, right? I definitely hesitate to throw away the CMC this year.


The CMC is not the joke it used to be with its ghost storms it used to be develop from every little thunderstorm out there.
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Re: 2020 Global Model Runs Discussion (Out thru day 16)

#1383 Postby EquusStorm » Sat Aug 15, 2020 4:15 pm

The CMC consistently beating out the Euro/GFS in the tropics is something I did NOT have on my 2020 apocalypse checklist
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Re: 2020 Global Model Runs Discussion (Out thru day 16)

#1384 Postby eastcoastFL » Sat Aug 15, 2020 4:20 pm

Ubuntwo wrote:
gfsperpendicular wrote:
Kingarabian wrote:
Pretty believable IMO. Atlantic "switch" usually flips to "On" in that time frame. Even if the GFS and Euro don't show it, the CMC has become a solid model and I think the GFS and Euro will eventually show it.


This happened with Gonzalo, right? I definitely hesitate to throw away the CMC this year.

The 12z CMC corroborates pretty well with the 12z EPS, so it's 100% something to watch.


Is it me or does the CMC seem to bring everything further west?
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Re: 2020 Global Model Runs Discussion (Out thru day 16)

#1385 Postby TheProfessor » Sat Aug 15, 2020 5:14 pm

eastcoastFL wrote:
Ubuntwo wrote:
gfsperpendicular wrote:
This happened with Gonzalo, right? I definitely hesitate to throw away the CMC this year.

The 12z CMC corroborates pretty well with the 12z EPS, so it's 100% something to watch.


Is it me or does the CMC seem to bring everything further west?


I've seen a bit of a west bias show up on the CMC this year, though I've found it to be more in the middle between the east biased GFS and west biased Euro/Ukie. This was pretty evident during tornado season.
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Re: 2020 Global Model Runs Discussion (Out thru day 16)

#1386 Postby DorkyMcDorkface » Sat Aug 15, 2020 7:37 pm

Another look at the 12z EPS, this time out to tau 360 (from weathermodels.com). Quite an active look, particularly in the western part of the basin. I'm not posting this to fear monger or anything, just to show you that things do appear to be picking up. 12z operational Euro had a couple of areas and the 12z CMC had two full-blown TCs. Wonder if this is gonna be another case of the GFS playing catch-up like we've seen repeatedly this year.

Image
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Re: 2020 Global Model Runs Discussion (Out thru day 16)

#1387 Postby aspen » Sat Aug 15, 2020 8:02 pm

DorkyMcDorkface wrote:Another look at the 12z EPS, this time out to tau 360 (from weathermodels.com). Quite an active look, particularly in the western part of the basin. I'm not posting this to fear monger or anything, just to show you that things do appear to be picking up. 12z operational Euro had a couple of areas and the 12z CMC had two full-blown TCs. Wonder if this is gonna be another case of the GFS playing catch-up like we've seen repeatedly this year.

https://i.ibb.co/7NFmL22/eps-cyclones-atlantic-360-2020081512.png

Talk about an active look.

If I were to make any reasonable guesses based off of that, I would bet we’ll see 2 hurricanes and 1 major before the end of August. The phrase “it’s way too early to determine track and intensity” is an understatement when dealing with an ensemble run going out 15 days.
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Re: 2020 Global Model Runs Discussion (Out thru day 16)

#1388 Postby St0rmTh0r » Sat Aug 15, 2020 8:21 pm

CMC has been the best model picking out cyclogenis this year. The active phase is fast approaching.
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Re: 2020 Global Model Runs Discussion (Out thru day 16)

#1389 Postby TheProfessor » Sat Aug 15, 2020 8:23 pm

DorkyMcDorkface wrote:Another look at the 12z EPS, this time out to tau 360 (from weathermodels.com). Quite an active look, particularly in the western part of the basin. I'm not posting this to fear monger or anything, just to show you that things do appear to be picking up. 12z operational Euro had a couple of areas and the 12z CMC had two full-blown TCs. Wonder if this is gonna be another case of the GFS playing catch-up like we've seen repeatedly this year.

https://i.ibb.co/7NFmL22/eps-cyclones-atlantic-360-2020081512.png


That one member that has a likely major passing through the keys and into the Gulf as a sub 950 storm. :eek:
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Re: 2020 Global Model Runs Discussion (Out thru day 16)

#1390 Postby GeneratorPower » Sat Aug 15, 2020 8:26 pm

TheProfessor wrote:
DorkyMcDorkface wrote:Another look at the 12z EPS, this time out to tau 360 (from weathermodels.com). Quite an active look, particularly in the western part of the basin. I'm not posting this to fear monger or anything, just to show you that things do appear to be picking up. 12z operational Euro had a couple of areas and the 12z CMC had two full-blown TCs. Wonder if this is gonna be another case of the GFS playing catch-up like we've seen repeatedly this year.

https://i.ibb.co/7NFmL22/eps-cyclones-atlantic-360-2020081512.png


That one member that has a likely major passing through the keys and into the Gulf as a sub 950 storm. :eek:


That's a Kat***a redux. (Censored for the young folk.)
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Re: 2020 Global Model Runs Discussion (Out thru day 16)

#1391 Postby toad strangler » Sat Aug 15, 2020 8:27 pm

Sooooo, let's not lose sight of the fact that we were still supposed to be in a LULL for another week at least.
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Re: 2020 Global Model Runs Discussion (Out thru day 16)

#1392 Postby aspen » Sat Aug 15, 2020 8:43 pm

toad strangler wrote:Sooooo, let's not lose sight of the fact that we were still supposed to be in a LULL for another week at least.

The background state is so favorable that the Atlantic is able to muster out two SIMULTANEOUS TCs during a suppressive MJO phase. It seems to be impossible to keep the Atlantic in a true lull lasting more than a week or two.
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Re: 2020 Global Model Runs Discussion (Out thru day 16)

#1393 Postby lsuhurricane » Sat Aug 15, 2020 10:35 pm

As mentioned in the Central Atlantic Wave thread, the ICON shows a hurricane entering the GOM next Sunday near the tip of Cuba
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Re: 2020 Global Model Runs Discussion (Out thru day 16)

#1394 Postby Steve » Sat Aug 15, 2020 10:43 pm

We'll get to see what the models think from 7.5 days (ICON) through 16 (GFS) and what they end up saying. I'll probably stay up for a while, but as usual, I'll let someone else post about the ECMWF. What we know coming into tonight is that we're starting from just inside the circle at Phase 7 (some models had us crossing the top of the circle to get back to 8-1 from early last week). But we knew we'd be in 8 by Sunday or Monday. What's a little off to me is that almost none of the MJO aspects of the globals do much more than just get tied up close to enhanced phases. I'm not sure why. The CMC does sort of bleed toward Phases 2 and 3 ( https://www.cpc.ncep.noaa.gov/products/ ... cmet.shtml ). The rest either get tied up, rotate or sort of just stay like they are or end up doubling back. Even on Dr. Ventrice's site, the MJO does now move into the W ATL basin in week 2. But it's losing punch. That's not irregular for MJO as it moves eastward, but just based on its strength, you don't expect to see it that much less enhanced in week 2. We were discussing early this week that the GFS should begin to trend toward weaker EPAC systems overall than it had been advertising as well as adjust the MJO toward the western Atlantic from where it was concentrating that. It still isn't right - I don't think. But with it and all the other models getting tangled up (mostly except the CMC and JMA), I guess they will have telegraphed it if activity toward the end of next week and the week after isn't up yet. I'll repeat that I don't personally agree. But again, we can continue to see if the models are sometimes flipped on their heads this year. Who would ever take a bet that you'd want to maybe see what the ICON and CMC say and give that similar weight as to what you might ordinarily afford the GFS or ECMWF. IDK. We'll see. ICON shoudl be mostly in by now, so I'll go run it and see if I feel it's got anything of note.
Last edited by Steve on Sat Aug 15, 2020 11:02 pm, edited 4 times in total.
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Re: 2020 Global Model Runs Discussion (Out thru day 16)

#1395 Postby AxaltaRacing24 » Sat Aug 15, 2020 10:45 pm

lsuhurricane wrote:As mentioned in the Central Atlantic Wave thread, the ICON shows a hurricane entering the GOM next Sunday near the tip of Cuba

the run is similar to the cmc, including the wave behind it.
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Re: 2020 Global Model Runs Discussion (Out thru day 16)

#1396 Postby Steve » Sat Aug 15, 2020 11:00 pm

Image

Here is the ICON at 180 hours (valid 7.5 days so 7am next Sunday morning). Note that it still has the remnants of Josephine in the central Atlantic. It has been pioneering that whereas several other globals have been kicking it out toward the EU and UK. But it's been getting weaker on the runs the last couple of days. It appears to be emphasizing the central Atlantic wave in the Gulf. You still can't tell what the name will be because though above is the 180 hour plot, there's a chance the low coming off the Carolinas could get named if it's right earlier in the run.
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Re: 2020 Global Model Runs Discussion (Out thru day 16)

#1397 Postby Steve » Sat Aug 15, 2020 11:24 pm

GFS @ 180 hours (compare to ICON, not really close)
Image
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Re: 2020 Global Model Runs Discussion (Out thru day 16)

#1398 Postby TheProfessor » Sat Aug 15, 2020 11:34 pm

The GFS does some interesting things with the wave that just came off of Africa, but it looks like the wave it develops actually comes from South America.
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Re: 2020 Global Model Runs Discussion (Out thru day 16)

#1399 Postby Hurricaneman » Sat Aug 15, 2020 11:38 pm

TheProfessor wrote:The GFS does some interesting things with the wave that just came off of Africa, but it looks like the wave it develops actually comes from South America.

Which is the southern part of the wave coming off of Africa, details will be ironed out in a few days in regards to location and strength
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Re: 2020 Global Model Runs Discussion (Out thru day 16)

#1400 Postby Steve » Sat Aug 15, 2020 11:51 pm

Here is the CMC which looks a lot more like the GFS than the ICON. Generally I'd trust these two more, but I wouldn't want to have to make that call.

Image

CMC ultimately doesn't do much with the first low and sort of spins it around southern Mexico. The next one bumps into the Yucatan
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