ATL: CRISTOBAL - Models

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Re: ATL: CRISTOBAL - Models

#461 Postby SoupBone » Wed Jun 03, 2020 9:07 pm

NDG wrote:
Aric Dunn wrote:does anyone want to actually see the entire 18z euro ??

well Ill show you anyway..

also what did I say earlier??? only a matter of time before it just stays going to the NE... spent too much time wandering around and the trough has moved in.. :p

https://i.ibb.co/X5sXJDJ/modezrpd-20200607-1200-animation.gif


As if it gets resurrected by the Mayans lol.


Wow! IF, and I obviously say that with some skepticism, this were to happen, then 2020 continues to live up to the hype. Unreal.
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ATL: CRISTOBAL - Tropical Storm - Discussion

#462 Postby NDG » Wed Jun 03, 2020 9:10 pm

This is how bad the Euro from just 24 hrs is tonight.
12z Euro is also already off.

Image
Image
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Re: ATL: CRISTOBAL - Tropical Storm - Discussion

#463 Postby Ubuntwo » Wed Jun 03, 2020 9:19 pm

NDG wrote:12z Euro is also already off.

Image
Took your 12z euro pic & added rough position of the center, just approximate
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Re: ATL: CRISTOBAL - Models

#464 Postby Wx_Warrior » Wed Jun 03, 2020 9:55 pm

NHC 10pm track update

"After that time, some additional strengthening is forecast while Cristobal moves northward toward the northern Gulf coast, but
the overall environment is not expected to be particularly conducive for intensification. The updated NHC intensity forecast shows a slightly lower peak intensity than the previous advisory,
and it is in best agreement with the HFIP corrected consensus model and the IVCN intensity consensus aid."

Image
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Re: ATL: CRISTOBAL - Models

#465 Postby Wx_Warrior » Wed Jun 03, 2020 10:56 pm

0z GFS...big shift east

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Re: ATL: CRISTOBAL - Models

#466 Postby PTrackerLA » Wed Jun 03, 2020 11:54 pm

00z UKMet similar track as 12z with that strange bend NE and then sharp hook west and then NNW into south central LA. A few mb's weaker than 12z run too.

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Re: ATL: CRISTOBAL - Models

#467 Postby Steve » Thu Jun 04, 2020 12:06 am

CMC at 90 hours is right along the coast at Grand Isle, LA at 1000mb. You can see the expanded wind field the NHC noted. I was wondering myself when I was running some of the early models if that might be the case. Along with other models that sniffed out the landfall and likely run up the Yucatan (or develop a new circulation east of there), this tells me the center is sufficiently disrupted that instead of tightening up it will blow out - angular momentum or whatever. So that means that even though it won't be able to strengthen to a higher potential peak, area of winds should be larger and affect more people. Hopefully if the winds inland are 25-30, it's not that big of a deal. But if you have widespread gale or TS+, you already know limbs come down and lots of power goes out. So we'll have to see if the CMC is right. HMON and HWRF are running now.

https://www.tropicaltidbits.com/analysi ... 0400&fh=90

^^ The above post is just a discussion of what the CMC is showing, not necessarily what I think will happen.

Also, CMC has the heaviest rainfall aligned in two bands - one pointing toward south Walton/30-A and the other into around Cross City which has about a foot of water expected by the Canadian.

https://www.tropicaltidbits.com/analysi ... 400&fh=120
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Re: ATL: CRISTOBAL - Models

#468 Postby Steve » Thu Jun 04, 2020 12:28 am

HWRF is out to 72 hours and has a diffused low @ 25.5/94 @1001mb; update it's at 81 hours and 1000 at 24.8 / 93.4 so an eastern component on its track in those 9 hours at least.

Meanwhile, HMON at 72 hours is at 24.7 / 92.76 @ 996mb. So it's a little stronger and a little further east probably more in line with the globals at that point. We'll see where they go in the next few minutes.
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Re: ATL: CRISTOBAL - Models

#469 Postby Steve » Thu Jun 04, 2020 12:52 am

Outcome is that it looks like HWRF-P wants to hit around Morgan City @ 984 Monday Morning.
https://www.tropicaltidbits.com/analysi ... 318&fh=114

Furthest west of the Hurricane Models is the HWRF which weakens it into not much of anything. It's still a gale storm at 1003mb probably, but it doesn't have much associated rain. If it's right, then it's got the coup. If it's wrong, it was completely out to lunch at 4 days. It looks to landfall west of Pecan Island around the Rockefeller Wildlife Refuge.
https://www.tropicaltidbits.com/analysi ... 400&fh=105

HMON landfalls Monday morning around 993mb a bit east of the HWRF near Marsh Island/Vermilion Bay. It's a North and Northeast weighted storm at that point.
https://www.tropicaltidbits.com/analysi ... 400&fh=108
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Re: ATL: CRISTOBAL - Models

#470 Postby Steve » Thu Jun 04, 2020 1:23 am

Last post until I go to bed. Last couple models on TT (didn't check UST) are ECMWF and JMA. Following up on the comparison with the Hurricane Models at 72 hours, let's compare the JMA and ECMWF (low res obviously).

Both of these models have reasonable forward speed after 2 days.

72 Hours
Japanese Model - 27.5N / 90.3W @ 999mb and kind of an elongated center

European - 24.75N / 90.55W @ 991mb so borderline TS/H1. European barely intensifies on the way to Grand Isle/Port Fouchon at 989mb Sunday evening.

We'll see what the GFS and EU ensembles say later. I'll get back around 8 and look at the 06z runs and see if there is a further trend eastward or if things will continue to aim for the LA Coast.
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Re: ATL: CRISTOBAL - Models

#471 Postby NDG » Thu Jun 04, 2020 5:23 am

Yesterday's 12z Euro did a good job of forecasting Cristobal to move further inland during the night after stalling out during the day. It keeps trending to the right so it shows it to stay inland over the YP as it starts heading north late tonight and get out over the southern GOM until late tomorrow night.
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Re: ATL: CRISTOBAL - Models

#472 Postby SFLcane » Thu Jun 04, 2020 5:50 am

06z gfs doesn’t even look tropical on approach to the gulf coast. Plenty of drier air entrained into circulation. Look at the moisture streaming into FL. :eek:

Image

Image
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Re: ATL: CRISTOBAL - Models

#473 Postby NDG » Thu Jun 04, 2020 6:00 am

SFLcane wrote:06z gfs doesn’t even look tropical on approach to the gulf coast. Plenty of drier air entrained into circulation. Look at the moisture streaming into FL. :eek:

https://i.imgur.com/tccwspy.png

https://i.imgur.com/Ln9HMmp.png


Typical early storm when it interacts with an UL trough & dry air as it gains latitude.
I remember TS Alberto in '18, we were at Venice beach that weekend as it track just to the west of us dry air wrapped around it over us and it actually turned out to be a very nice day.

Image
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Re: ATL: CRISTOBAL - Models

#474 Postby TheStormExpert » Thu Jun 04, 2020 6:19 am

NDG wrote:
SFLcane wrote:06z gfs doesn’t even look tropical on approach to the gulf coast. Plenty of drier air entrained into circulation. Look at the moisture streaming into FL. :eek:

https://i.imgur.com/tccwspy.png

https://i.imgur.com/Ln9HMmp.png


Typical early storm when it interacts with an UL trough & dry air as it gains latitude.
I remember TS Alberto in '18, we were at Venice beach that weekend as it track just to the west of us dry air wrapped around it over us and it actually turned out to be a very nice day.

https://i.imgur.com/ja7JIr4.gif

Do you think they’ll go with Subtropical Storm Cristobal? How’s that work.
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Re: ATL: CRISTOBAL - Models

#475 Postby NDG » Thu Jun 04, 2020 6:35 am

TheStormExpert wrote:
NDG wrote:
SFLcane wrote:06z gfs doesn’t even look tropical on approach to the gulf coast. Plenty of drier air entrained into circulation. Look at the moisture streaming into FL. :eek:

https://i.imgur.com/tccwspy.png

https://i.imgur.com/Ln9HMmp.png


Typical early storm when it interacts with an UL trough & dry air as it gains latitude.
I remember TS Alberto in '18, we were at Venice beach that weekend as it track just to the west of us dry air wrapped around it over us and it actually turned out to be a very nice day.

https://i.imgur.com/ja7JIr4.gif

Do you think they’ll go with Subtropical Storm Cristobal? How’s that work.


I doubt it will become a subtropical system since it is fully tropical of origin unless the strongest winds are well away from the CoC like the GFS forecasts.
The Euro still has the strongest winds close to it.

Image
Image
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Re: ATL: CRISTOBAL - Models

#476 Postby NDG » Thu Jun 04, 2020 6:59 am

The difference between the "stronger" Euro and "weaker, broader" GFS is that the Euro is develops a more potent circulation and stacks it up to at least H30 and is able to wrap moisture around its CoC while the GFS does not.
People questioning current shear and dry air over the central GOM, as the heights rise over the Bahamas, Cuba and eventually FL it will push the trough axis westward over the next few days as Cristobal starts its track northward, shown on the image loop below by both models.

Image
Image
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Re: ATL: CRISTOBAL - Models

#477 Postby TheStormExpert » Thu Jun 04, 2020 7:03 am

What's the furthest south a TC transitioned to extratropical? Maybe Cristobal could break that record as well.

 https://twitter.com/DerekOrtt/status/1268481232461062145


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Re: ATL: CRISTOBAL - Models

#478 Postby TheStormExpert » Thu Jun 04, 2020 7:04 am

NDG wrote:
TheStormExpert wrote:
NDG wrote:
Typical early storm when it interacts with an UL trough & dry air as it gains latitude.
I remember TS Alberto in '18, we were at Venice beach that weekend as it track just to the west of us dry air wrapped around it over us and it actually turned out to be a very nice day.

https://i.imgur.com/ja7JIr4.gif

Do you think they’ll go with Subtropical Storm Cristobal? How’s that work.


I doubt it will become a subtropical system since it is fully tropical of origin unless the strongest winds are well away from the CoC like the GFS forecasts.
The Euro still has the strongest winds close to it.

https://i.imgur.com/dBqJ4Nh.png
https://i.imgur.com/8XHrtWw.png

Meanwhile the GFS does look Subtropical if not Extratropical with effects being felt as far as the FL peninsula.
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Re: ATL: CRISTOBAL - Models

#479 Postby Aric Dunn » Thu Jun 04, 2020 7:07 am

6z Euro 30 hours still over southern Yucatan... it just keeps getting pushed out farther and farther..
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Re: ATL: CRISTOBAL - Models

#480 Postby dantonlsu » Thu Jun 04, 2020 7:11 am

Aric Dunn wrote:6z Euro 30 hours still over southern Yucatan... it just keeps getting pushed out farther and farther..


Will be interesting if this results in more of a westward track, or if it hooks to the right.
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