ATL: ETA - Post-Tropical - Discussion

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Re: ATL: ETA - Hurricane - Discussion

#1041 Postby ElectricStorm » Mon Nov 02, 2020 1:13 pm

tolakram wrote:
Weather Dude wrote:O come on NHC! No way this isn't at least a mid cat 4 right now


Based on what? As the season progresses we go from accusations the NHC is over predicting intensity to accusations the NHC is under predicting. It's getting old. How about everyone give reasoning for their prediction and move on rather than imply that somehow the NHC's prediction is worse than yours?

Sorry. Will refrain. I understand it's tough to estimate intensity without recon. I just know that most storms with a CMG ring and some CDG in there as well with clearing pinhole eye are stronger than a Cat 3. But I understand it's hard to know for sure without recon, especially since intensity estimates struggle with pinhole eyes.
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Re: ATL: ETA - Hurricane - Discussion

#1042 Postby GCANE » Mon Nov 02, 2020 1:14 pm

An approximate 5-mile wide tornado

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Re: ATL: ETA - Hurricane - Discussion

#1043 Postby Highteeld » Mon Nov 02, 2020 1:14 pm

Gilbert vibes... been a while since a T8 Atlantic system anyhow
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Very useful information on the Dvorak Technique --

https://severe.worldweather.wmo.int/TCF ... kBeven.pdf

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Re: ATL: ETA - Hurricane - Discussion

#1044 Postby NotoSans » Mon Nov 02, 2020 1:14 pm

SAB's Dvorak looks fine. Without recon, I would go with 120kt because (a) storms usually intensified faster than what 6-hr average indicates and (b) eye temperature may be slightly undersampled due to pinhole eye.
Last edited by NotoSans on Mon Nov 02, 2020 1:15 pm, edited 1 time in total.
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Re: ATL: ETA - Hurricane - Discussion

#1045 Postby Hurricaneman » Mon Nov 02, 2020 1:14 pm

tolakram wrote:
Weather Dude wrote:O come on NHC! No way this isn't at least a mid cat 4 right now


Based on what? As the season progresses we go from accusations the NHC is over predicting intensity to accusations the NHC is under predicting. It's getting old. How about everyone give reasoning for their prediction and move on rather than imply that somehow the NHC's prediction is worse than yours?


The thing is they can adjust up or down depending on what the 230 recon finds but satellite data shows cat 3 and maybe as high as 130mph so thats what we have to go by until recon arrives or a surface ob is shown
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Re: ATL: ETA - Hurricane - Discussion

#1046 Postby AutoPenalti » Mon Nov 02, 2020 1:16 pm

HurricaneEnzo wrote:
tolakram wrote:
Weather Dude wrote:O come on NHC! No way this isn't at least a mid cat 4 right now


Based on what? As the season progresses we go from accusations the NHC is over predicting intensity to accusations the NHC is under predicting. It's getting old. How about everyone give reasoning for their prediction and move on rather than imply that somehow the NHC's prediction is worse than yours?


Dvorak for starters. If you are going to have tools like this in place in the absence of recon at least use them. But at the end of the day they are the experts and it is their call.

Never use DVORAK for rapidly intensifying pinhole's like Eta.
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Re: ATL: ETA - Hurricane - Discussion

#1047 Postby GCANE » Mon Nov 02, 2020 1:18 pm

Structure illustrated well by rain rate

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Re: ATL: ETA - Hurricane - Discussion

#1048 Postby NotoSans » Mon Nov 02, 2020 1:19 pm

AutoPenalti wrote:
HurricaneEnzo wrote:
tolakram wrote:
Based on what? As the season progresses we go from accusations the NHC is over predicting intensity to accusations the NHC is under predicting. It's getting old. How about everyone give reasoning for their prediction and move on rather than imply that somehow the NHC's prediction is worse than yours?


Dvorak for starters. If you are going to have tools like this in place in the absence of recon at least use them. But at the end of the day they are the experts and it is their call.

Never use DVORAK for rapidly intensifying pinhole's like Eta.

But without recon Dvorak is the only tool we have. Objective aids like AMSU and SMAP are better but they are not frequently updated.
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Re: ATL: ETA - Hurricane - Discussion

#1049 Postby supercane4867 » Mon Nov 02, 2020 1:20 pm

Still a lot of room for improvement left for the eye. I hope recon gets there before ERC kicks in.

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Re: ATL: ETA - Hurricane - Discussion

#1050 Postby cycloneye » Mon Nov 02, 2020 1:21 pm

Let's see if we can get a good ASCAT pass before recon arrives late afternoon.
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Re: ATL: ETA - Hurricane - Discussion

#1051 Postby CrazyC83 » Mon Nov 02, 2020 1:23 pm

It looks to be moving almost due south in the last couple frames. Already starting to stall out perhaps?
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Re: ATL: ETA - Hurricane - Discussion

#1052 Postby CyclonicFury » Mon Nov 02, 2020 1:24 pm

cycloneye wrote:Let's see if we can get a good ASCAT pass before recon arrives late afternoon.

ASCAT won't be very helpful for a storm this intense.
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Re: ATL: ETA - Hurricane - Discussion

#1053 Postby Iceresistance » Mon Nov 02, 2020 1:25 pm

Is recon expected to be there this afternoon?
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Re: ATL: ETA - Hurricane - Discussion

#1054 Postby Iceresistance » Mon Nov 02, 2020 1:26 pm

CyclonicFury wrote:
cycloneye wrote:Let's see if we can get a good ASCAT pass before recon arrives late afternoon.

ASCAT won't be very helpful for a storm this intense.

ASCAT direct hit
Image
Image
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Re: ATL: ETA - Hurricane - Discussion

#1055 Postby AutoPenalti » Mon Nov 02, 2020 1:27 pm

CrazyC83 wrote:It looks to be moving almost due south in the last couple frames. Already starting to stall out perhaps?

South motion was expected. It's little wobbles within the eye.
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Re: ATL: ETA - Hurricane - Discussion

#1056 Postby us89 » Mon Nov 02, 2020 1:27 pm

CyclonicFury wrote:
cycloneye wrote:Let's see if we can get a good ASCAT pass before recon arrives late afternoon.

ASCAT won't be very helpful for a storm this intense.


Or one this small, either. For all the reasons Dvorak isn't great for strong systems like this with pinhole eyes, ASCAT is even worse.
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Re: ATL: ETA - Hurricane - Discussion

#1057 Postby ClarCari » Mon Nov 02, 2020 1:28 pm

Next Recon leaves in a little over an hour!! EST. 1:45PM CDT.

Fingers crossed!!
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Re: ATL: ETA - Hurricane - Discussion

#1058 Postby Cunxi Huang » Mon Nov 02, 2020 1:30 pm

Won't be very helpful either way. ASCAT resolution is LOW + not good for any storm > 65 kt in general.

Iceresistance wrote:
CyclonicFury wrote:
cycloneye wrote:Let's see if we can get a good ASCAT pass before recon arrives late afternoon.

ASCAT won't be very helpful for a storm this intense.

ASCAT direct hit
https://cyclonicwx.com/data/ascat/ascat_29L_barb_202011021629.png
https://cyclonicwx.com/data/ascat/ascat_29L_speed_202011021629.png
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Re: ATL: ETA - Hurricane - Discussion

#1059 Postby Iceresistance » Mon Nov 02, 2020 1:31 pm

Cunxi Huang wrote:Won't be very helpful either way. ASCAT resolution is LOW + not good for any storm > 65 kt in general.

Iceresistance wrote:
CyclonicFury wrote:ASCAT won't be very helpful for a storm this intense.

ASCAT direct hit
https://cyclonicwx.com/data/ascat/ascat_29L_barb_202011021629.png
https://cyclonicwx.com/data/ascat/ascat_29L_speed_202011021629.png

True, but it helps with the size of the storm.
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Re: ATL: ETA - Hurricane - Discussion

#1060 Postby ElectricStorm » Mon Nov 02, 2020 1:33 pm

Eye becoming obscured again on IR due to all that deep convection. Trying to wrap that pink around, what a monster :eek:

EDIT: And as soon as I post that the eye becomes clearer again :double:
Last edited by ElectricStorm on Mon Nov 02, 2020 1:37 pm, edited 1 time in total.
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