ATL: FIONA - Post-Tropical - Discussion
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Re: ATL: FIONA - Hurricane - Discussion
Has anyone heard about AF307? No data since 6z
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Bill 2015 & Beta 2020
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Re: ATL: FIONA - Hurricane - Discussion
ADT now up to 6.5
UW - CIMSS
ADVANCED DVORAK TECHNIQUE
ADT-Version 9.0
Tropical Cyclone Intensity Algorithm
----- Current Analysis -----
Date : 21 SEP 2022 Time : 072020 UTC
Lat : 23:38:59 N Lon : 71:45:00 W
CI# /Pressure/ Vmax
6.7 / 927mb / 132kts
Final T# Adj T# Raw T#
6.5 6.5 6.5
Estimated radius of max. wind based on IR : 26 km
Center Temp : +18.0C Cloud Region Temp : -68.7C
Scene Type : EYE
ADVANCED DVORAK TECHNIQUE
ADT-Version 9.0
Tropical Cyclone Intensity Algorithm
----- Current Analysis -----
Date : 21 SEP 2022 Time : 072020 UTC
Lat : 23:38:59 N Lon : 71:45:00 W
CI# /Pressure/ Vmax
6.7 / 927mb / 132kts
Final T# Adj T# Raw T#
6.5 6.5 6.5
Estimated radius of max. wind based on IR : 26 km
Center Temp : +18.0C Cloud Region Temp : -68.7C
Scene Type : EYE
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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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Re: ATL: FIONA - Hurricane - Discussion
TheDreamTraveler wrote:May not be the prettiest cat 4 but can't really complain given this entire season so far lol
She looks to be battling some shear/dry air on the NE side, but looks like an absolute beauty outside of that.
Yeah, I give up trying to post an image.
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Re: ATL: FIONA - Hurricane - Discussion
PavelGaborik10 wrote:TheDreamTraveler wrote:May not be the prettiest cat 4 but can't really complain given this entire season so far lol
She looks to be battling some shear/dry air on the NE side, but looks like an absolute beauty outside of that.
Yeah, I give up trying to post an image.
If you're using imgur it takes about a minute after it uploads to generate a usable link
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Re: ATL: FIONA - Hurricane - Discussion
Hammy wrote:PavelGaborik10 wrote:TheDreamTraveler wrote:May not be the prettiest cat 4 but can't really complain given this entire season so far lol
She looks to be battling some shear/dry air on the NE side, but looks like an absolute beauty outside of that.
Yeah, I give up trying to post an image.
If you're using imgur it takes about a minute after it uploads to generate a usable link
Merci.
Beautiful looking cane as far as I'm concerned.

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Re: ATL: FIONA - Hurricane - Discussion
First the recon data went out on TT and now there are no new advisories on the NHC site. Fiona and Gaston are both late.
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Re: ATL: FIONA - Hurricane - Discussion
wx98 wrote:First the recon data went out on TT and now there are no new advisories on the NHC site. Fiona and Gaston are both late.
Appears like some kind of NOAA wide issue. Model data, ATCF data, recon data aren't going out, and NOAA sites are having issues
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This post was probably an opinion of mine, and in no way is official. Please refer to http://www.hurricanes.gov for official tropical analysis and advisories.
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My website, with lots of tropical wx graphics, including satellite and recon: http://cyclonicwx.com
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Re: ATL: FIONA - Hurricane - Discussion
Very strange. I don't think I've ever seen them miss an advisory for any issue.
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Re: ATL: FIONA - Hurricane - Discussion
Hurricane Mike wrote:Very strange. I don't think I've ever seen them miss an advisory for any issue.
They probably didn't miss it, we just can't see anything
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My website, with lots of tropical wx graphics, including satellite and recon: http://cyclonicwx.com
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Re: ATL: FIONA - Hurricane - Discussion
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Re: ATL: FIONA - Hurricane - Discussion
Pressure down to 939 mb.
BULLETIN
Hurricane Fiona Advisory Number 28
NWS National Hurricane Center Miami FL AL072022
500 AM EDT Wed Sep 21 2022
...FIONA MOVING NORTHWARD AT CATEGORY 4 STRENGTH...
SUMMARY OF 500 AM EDT...0900 UTC...INFORMATION
----------------------------------------------
LOCATION...23.9N 71.8W
ABOUT 170 MI...275 KM NNW OF GRAND TURK ISLAND
ABOUT 720 MI...1160 KM SW OF BERMUDA
MAXIMUM SUSTAINED WINDS...130 MPH...215 KM/H
PRESENT MOVEMENT...N OR 360 DEGREES AT 8 MPH...13 KM/H
MINIMUM CENTRAL PRESSURE...939 MB...27.73 INCHES
Hurricane Fiona Advisory Number 28
NWS National Hurricane Center Miami FL AL072022
500 AM EDT Wed Sep 21 2022
...FIONA MOVING NORTHWARD AT CATEGORY 4 STRENGTH...
SUMMARY OF 500 AM EDT...0900 UTC...INFORMATION
----------------------------------------------
LOCATION...23.9N 71.8W
ABOUT 170 MI...275 KM NNW OF GRAND TURK ISLAND
ABOUT 720 MI...1160 KM SW OF BERMUDA
MAXIMUM SUSTAINED WINDS...130 MPH...215 KM/H
PRESENT MOVEMENT...N OR 360 DEGREES AT 8 MPH...13 KM/H
MINIMUM CENTRAL PRESSURE...939 MB...27.73 INCHES
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Re: ATL: FIONA - Hurricane - Discussion
NotSparta wrote:wx98 wrote:First the recon data went out on TT and now there are no new advisories on the NHC site. Fiona and Gaston are both late.
Appears like some kind of NOAA wide issue. Model data, ATCF data, recon data aren't going out, and NOAA sites are having issues
All has been fixed now.
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Visit the Caribbean-Central America Weather Thread where you can find at first post web cams,radars
and observations from Caribbean basin members Click Here
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Re: ATL: FIONA - Hurricane - Discussion
Landy wrote:Wonder what's causing the eye to be squished.
https://cdn.discordapp.com/attachments/716215692617187328/1022073848805470248/429006b9-acef-495d-b0dc-bdb2051ca842.jpeg
Maybe a tiny bit of shear or yet another EWRC. Recon data is slowly loading in and so far doesn’t show any super obvious double wind maxima. The data that has loaded includes a dropsonde with 119 kt surface wind in the SE eyewall, and a 937/9 eye drop supporting 935-936mb, so Fiona might be 120 kt and 937 mbar now.
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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: FIONA - Hurricane - Discussion
Note that these are instantaneous winds, but still. 120 kt at the surface and cat 5 winds as the mean in the lowest 150 m. Combined with the 116 kt SFMR it might soon be enough for an upgrade to 120 kt if the next pass finds even stronger winds.


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Re: ATL: FIONA - Hurricane - Discussion
PavelGaborik10 wrote:cheezyWXguy wrote:PavelGaborik10 wrote:
Why do you keep insisting an EWRC is currently underway? Recon doesn't suggest this and neither does satellite.
While an EWRC doesn’t appear to have occurred there was some reason to believe one might start, back when Aspen made that post. Outside of the current eyewall, there were up to two additional bands where local wind maxima were observed (one just outside the eyewall, one associated with the band to the NE), though neither was especially prominent. When storms take on a structure like that, it’s kind of a luck of the draw as to whether a cycle would eventually occur, or whether it would fail, and we’ve seen plenty of storms do each.
I understand the process, what I don't understand is that when the post was made the satellite appearance did not match the post he made, nor was there a significant enough double wind maxima that would suggest an EWRC was actively underway.
This has been an ongoing theme for 24 hours or so for that particular poster, and it's yet to hold any weight.
There WAS a double or triple wind maxima and aspen's discussion was the theory of an EWRC that is more of a meld than a traditional weaken / replacement. I had no issues following along, and the last post made was theorizing that in fact a meld would happen. We don't clearly understand all the inner workings of hurricanes, we still don't clearly understand why some go annular for example.
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Re: ATL: FIONA - Hurricane - Discussion
All the recon data just disappeared from Tropical Tidbits, but before that, they recorded an extrapolated pressure down to 933 mbar.
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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: FIONA - Hurricane - Discussion
This sure looks like another EWRC or meld on satellite imagery. The 00z HWRF shows this resolving by later this afternoon or early evening, and Fiona strengthening again until another EWRC starts late Thursday morning.
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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.
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Re: ATL: FIONA - Hurricane - Discussion
aspen wrote:All the recon data just disappeared from Tropical Tidbits, but before that, they recorded an extrapolated pressure down to 933 mbar.
Not on my screen, it completely came back with all the data!
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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!
- Iceresistance
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Re: ATL: FIONA - Hurricane - Discussion
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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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