ATL: IOTA - Remnants - Discussion
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Re: ATL: IOTA - Hurricane - Discussion
Now 916.7 mbar with 20 kt SFMR at the lowest pressure measurement, next update should give data on the NW eyewall.
Last edited by kevin on Mon Nov 16, 2020 2:14 pm, edited 1 time in total.
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Re: ATL: IOTA - Hurricane - Discussion
The eye is getting smaller
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Re: ATL: IOTA - Hurricane - Discussion
Looks like Iota is still deepening, albeit very slowly. Extrapolated pressures have dropped around 2 mbar between the first and third passes.
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Re: ATL: IOTA - Hurricane - Discussion
SFMR readings in the SW eyewall are pretty impressive. upper-CAT4 sustained winds in all quadrants
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Re: ATL: IOTA - Hurricane - Discussion
aspen wrote:Looks like Iota is still deepening, albeit very slowly. Extrapolated pressures have dropped around 2 mbar between the first and third passes.
Weren’t they ~914 on this morning’s mission? I believe it’s just been holding station for a few hours.
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Re: ATL: IOTA - Hurricane - Discussion
AF305 is on the runway.
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Irene '11 Sandy '12 Hermine '16 5/15/2018 Derecho Fay '20 Isaias '20 Elsa '21 Henri '21 Ida '21
I am only a meteorology enthusiast who knows a decent amount about tropical cyclones. Look to the professional mets, the NHC, or your local weather office for the best information.
I am only a meteorology enthusiast who knows a decent amount about tropical cyclones. Look to the professional mets, the NHC, or your local weather office for the best information.
Re: ATL: IOTA - Hurricane - Discussion
wx98 wrote:aspen wrote:Looks like Iota is still deepening, albeit very slowly. Extrapolated pressures have dropped around 2 mbar between the first and third passes.
Weren’t they ~914 on this morning’s mission? I believe it’s just been holding station for a few hours.
Extrapolated pressures were down to 913 mbar, although dropsondes only got down to 917-918 mbar.
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Re: ATL: IOTA - Hurricane - Discussion
Iceresistance wrote:The eye is getting smaller
Based on what?
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Re: ATL: IOTA - Hurricane - Discussion
I believe the storm weakened between the 2recon flights before restrenghtening again. The ir suggested a kind of structural issue or small change with a gap on the southern part of the cdo before showing the compact - cold cdo we are looking at right now.
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Re: ATL: IOTA - Hurricane - Discussion
Increasingly impressive appearance but can't imagine it gets too much stronger; it's already at unprecedented intensity for this late in the season and still feels absolutely surreal lol
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Re: ATL: IOTA - Hurricane - Discussion
aspen wrote:wx98 wrote:aspen wrote:Looks like Iota is still deepening, albeit very slowly. Extrapolated pressures have dropped around 2 mbar between the first and third passes.
Weren’t they ~914 on this morning’s mission? I believe it’s just been holding station for a few hours.
Extrapolated pressures were down to 913 mbar, although dropsondes only got down to 917-918 mbar.
Yes, so about the same as now...
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Re: ATL: IOTA - Hurricane - Discussion

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Very useful information on the Dvorak Technique --
https://severe.worldweather.wmo.int/TCF ... kBeven.pdf
https://severe.worldweather.wmo.int/TCF ... kBeven.pdf
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Re: ATL: IOTA - Hurricane - Discussion
tolakram wrote:Iceresistance wrote:The eye is getting smaller
Based on what?
I forgot the image!
Only 1 wind barb is below 10 knots

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Bill 2015 & Beta 2020
Winter 2020-2021
All observations are in Tecumseh, OK unless otherwise noted.
Winter posts are focused mainly for Oklahoma & Texas.
Take any of my forecasts with a grain of salt, refer to the NWS, SPC, and NHC for official information
Never say Never with weather! Because ANYTHING is possible!
Winter 2020-2021

All observations are in Tecumseh, OK unless otherwise noted.
Winter posts are focused mainly for Oklahoma & Texas.
Take any of my forecasts with a grain of salt, refer to the NWS, SPC, and NHC for official information
Never say Never with weather! Because ANYTHING is possible!
Re: ATL: IOTA - Hurricane - Discussion
Seems like recon missed the NW/WNW quad.
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Irene '11 Sandy '12 Hermine '16 5/15/2018 Derecho Fay '20 Isaias '20 Elsa '21 Henri '21 Ida '21
I am only a meteorology enthusiast who knows a decent amount about tropical cyclones. Look to the professional mets, the NHC, or your local weather office for the best information.
I am only a meteorology enthusiast who knows a decent amount about tropical cyclones. Look to the professional mets, the NHC, or your local weather office for the best information.
Re: ATL: IOTA - Hurricane - Discussion
Lack of SFMR or FL wind data to support 140 kts would indicate this is no longer Cat 5. Still an incredibly intense high-end Category 4.
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Re: ATL: IOTA - Hurricane - Discussion
aspen wrote:Seems like recon missed the NW/WNW quad.
They literally went NW from the eye...
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Re: ATL: IOTA - Hurricane - Discussion
Somehow the strongest winds have all been found in the southern side of the eyewall. Interesting for a west moving system.
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Re: ATL: IOTA - Hurricane - Discussion
wx98 wrote:Lack of SFMR or FL wind data to support 140 kts would indicate this is no longer Cat 5. Still an incredibly intense high-end Category 4.
Good. We got a crazy, record breaking storm... now I hope it implodes before landfall. They need a break down there.
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Re: ATL: IOTA - Hurricane - Discussion
Iceresistance wrote:tolakram wrote:Iceresistance wrote:The eye is getting smaller
Based on what?
I forgot the image!
Only 1 wind barb is below 10 knots
https://s8.gifyu.com/images/Really-tiny-eye.png
How does that indicate anything about the eye getting smaller? It’s already on the small side anyway.
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Re: ATL: IOTA - Hurricane - Discussion
wx98 wrote:Iceresistance wrote:tolakram wrote:
Based on what?
I forgot the image!
Only 1 wind barb is below 10 knots
https://s8.gifyu.com/images/Really-tiny-eye.png
How does that indicate anything about the eye getting smaller? It’s already on the small side anyway.
It can get slightly smaller or larger over time right now.
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Bill 2015 & Beta 2020
Winter 2020-2021
All observations are in Tecumseh, OK unless otherwise noted.
Winter posts are focused mainly for Oklahoma & Texas.
Take any of my forecasts with a grain of salt, refer to the NWS, SPC, and NHC for official information
Never say Never with weather! Because ANYTHING is possible!
Winter 2020-2021

All observations are in Tecumseh, OK unless otherwise noted.
Winter posts are focused mainly for Oklahoma & Texas.
Take any of my forecasts with a grain of salt, refer to the NWS, SPC, and NHC for official information
Never say Never with weather! Because ANYTHING is possible!
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