ATL: SAM - Remnants - Discussion

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InfernoFlameCat
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Re: ATL: SAM - Tropical Storm - Discussion

#301 Postby InfernoFlameCat » Thu Sep 23, 2021 1:05 pm

Also, with the band to its north and east, Sam kind of looks like what Haiyan would look like if Haiyan got stepped on by a Giant boot and was smushed. It’s just a funny observation that I saw.
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Re: ATL: SAM - Tropical Storm - Discussion

#302 Postby Shell Mound » Thu Sep 23, 2021 1:08 pm

Zonacane wrote:
AutoPenalti wrote:
Zonacane wrote:Sam is vertically stacked, so that's an eyewall.

It's close.

Microwaves showed the curved band wrapping up earlier. I would say that's an eyewall

Visible imagery suggests that the low-level centre is currently located northwest of the mid-level centre, based on the rotation of low-level clouds between convective bands. There is quite a bit of low-level stability being entrained from the northeast, so the “eye” is almost certainly a dry spot, given that Sam’s LL and MLCs are not yet vertically stacked, though getting closer over time. Currently, I would place the LLC at 11.4°N 39.2°W, just west of the dry spot.
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Re: ATL: SAM - Tropical Storm - Discussion

#303 Postby Zonacane » Thu Sep 23, 2021 1:11 pm

Shell Mound wrote:
Zonacane wrote:
AutoPenalti wrote:It's close.

Microwaves showed the curved band wrapping up earlier. I would say that's an eyewall

Visible imagery suggests that the low-level centre is currently located northwest of the mid-level centre, based on the rotation of low-level clouds between convective bands. There is quite a bit of low-level stability being entrained from the northeast, so the “eye” is almost certainly a dry spot, given that Sam’s LL and MLCs are not yet vertically stacked, though getting closer over time. Currently, I would place the LLC at 11.4°N 39.2°W, just west of the dry spot.

Microwave and the NHC say you are objectively wrong. Visually attempting to estimate the location of the low level center is not how it works.
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Re: ATL: SAM - Tropical Storm - Discussion

#304 Postby grapealcoholic » Thu Sep 23, 2021 1:12 pm

Shell Mound wrote:
Zonacane wrote:
AutoPenalti wrote:It's close.

Microwaves showed the curved band wrapping up earlier. I would say that's an eyewall

Visible imagery suggests that the low-level centre is currently located northwest of the mid-level centre, based on the rotation of low-level clouds between convective bands. There is quite a bit of low-level stability being entrained from the northeast, so the “eye” is almost certainly a dry spot, given that Sam’s LL and MLCs are not yet vertically stacked, though getting closer over time. Currently, I would place the LLC at 11.4°N 39.2°W, just west of the dry spot.

This is wrong lol
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Re: ATL: SAM - Tropical Storm - Discussion

#305 Postby Shell Mound » Thu Sep 23, 2021 1:13 pm

Zonacane wrote:
Shell Mound wrote:
Zonacane wrote:Microwaves showed the curved band wrapping up earlier. I would say that's an eyewall

Visible imagery suggests that the low-level centre is currently located northwest of the mid-level centre, based on the rotation of low-level clouds between convective bands. There is quite a bit of low-level stability being entrained from the northeast, so the “eye” is almost certainly a dry spot, given that Sam’s LL and MLCs are not yet vertically stacked, though getting closer over time. Currently, I would place the LLC at 11.4°N 39.2°W, just west of the dry spot.

Microwave and the NHC say you are objectively wrong. Visually attempting to estimate the location of the low level center is not how it works.

MW doesn’t always capture LL centres. You already think that this is a hurricane. :) To me convection still appears to be rather shallow.
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Re: ATL: SAM - Tropical Storm - Discussion

#306 Postby ElectricStorm » Thu Sep 23, 2021 1:15 pm

Looks great to me. Should be a hurricane soon and a major shortly after that in the next couple of days. Will likely challenge Ida for the strongest storm of the season so far.
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Re: ATL: SAM - Tropical Storm - Discussion

#307 Postby grapealcoholic » Thu Sep 23, 2021 1:20 pm

We should see some real deep towers pop up going into sunset
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Re: ATL: SAM - Tropical Storm - Discussion

#308 Postby aspen » Thu Sep 23, 2021 1:27 pm

This looks a little too ragged to be a hurricane already. 50-55 kt seems good for 5pm IMO.
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Re: ATL: SAM - Tropical Storm - Discussion

#309 Postby zzh » Thu Sep 23, 2021 1:47 pm

Image
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Re: ATL: SAM - Tropical Storm - Discussion

#310 Postby cheezyWXguy » Thu Sep 23, 2021 1:52 pm

Not an eye yet. I get what shell is saying, but I don’t think it’s so much a misalignment of the center, but more just that convection isn’t all that deep or well organized yet. The center is clearly not under the dry spot, and is instead under that recent relatively deep burst of convection. I’d put this at 50kt.
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Re: ATL: SAM - Tropical Storm - Discussion

#311 Postby zzh » Thu Sep 23, 2021 2:02 pm

AL, 18, 2021092318, , BEST, 0, 110N, 391W, 50, 1000, TS,
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Re: ATL: SAM - Tropical Storm - Discussion

#312 Postby Teban54 » Thu Sep 23, 2021 2:05 pm

cheezyWXguy wrote:Not an eye yet. I get what shell is saying, but I don’t think it’s so much a misalignment of the center, but more just that convection isn’t all that deep or well organized yet. The center is clearly not under the dry spot, and is instead under that recent relatively deep burst of convection. I’d put this at 50kt.

You nailed it!
Last edited by Teban54 on Thu Sep 23, 2021 2:09 pm, edited 1 time in total.
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Re: ATL: SAM - Tropical Storm - Discussion

#313 Postby Zonacane » Thu Sep 23, 2021 2:08 pm

cheezyWXguy wrote:Not an eye yet. I get what shell is saying, but I don’t think it’s so much a misalignment of the center, but more just that convection isn’t all that deep or well organized yet. The center is clearly not under the dry spot, and is instead under that recent relatively deep burst of convection. I’d put this at 50kt.

Pretty clearly an eyewall
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Re: ATL: SAM - Tropical Storm - Discussion

#314 Postby grapealcoholic » Thu Sep 23, 2021 2:14 pm


Pinhole developing
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Re: ATL: SAM - Tropical Storm - Discussion

#315 Postby Nimbus » Thu Sep 23, 2021 2:35 pm

If you slow down the visible loop you can see the northern semi circle of the low level cloud rotation looking down through the dry spot. That is moistening up with a convective burst at sunset. Convection in a slow spinning storm can disrupt a symmetric eyewall formation, RI is often delayed till a clear category 2 eyewall forms due to this issue.
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Re: ATL: SAM - Tropical Storm - Discussion

#316 Postby Blown Away » Thu Sep 23, 2021 2:37 pm

Image
Sam chugging away to the W...
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Re: ATL: SAM - Tropical Storm - Discussion

#317 Postby Stormybajan » Thu Sep 23, 2021 2:43 pm

Blown Away wrote:https://i.imgur.com/Bnvw1wU.gif
Sam chugging away to the W...

if it gets to 50W under 14N then alarm bells might start ringing for us in the islands but thankfully not many models are showing that ..yet
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Re: ATL: SAM - Tropical Storm - Discussion

#318 Postby cheezyWXguy » Thu Sep 23, 2021 3:03 pm

grapealcoholic wrote:

Pinhole developing

Lol what. MW imagery does not suggest a convective structure anywhere near well formed enough for a pinhole eye at this time. If anything, you’re seeing that overshooting top directly above the llc. Sam is strengthening, but I think we are getting ahead of ourselves a bit
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Re: ATL: SAM - Tropical Storm - Discussion

#319 Postby aspen » Thu Sep 23, 2021 3:18 pm

There’s a big hot tower going off over the LLC, maybe a tad bit to the N. Maybe this helps to close off the developing eyewall.
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Re: ATL: SAM - Tropical Storm - Discussion

#320 Postby cycloneye » Thu Sep 23, 2021 3:34 pm

FYI= Recon will go on Monday morning with the first of I am sure many missions.

viewtopic.php?f=59&t=122337&p=2946700#p2946700
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