
Suptropical Storm 1 (Upgraded in Pre-season Reanalysis)
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- cycloneye
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Re: ATL: INVEST 90L - Discussion
Yikes, what a core.


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Re: ATL: INVEST 90L - Discussion
CrazyC83 wrote:This does remind me somewhat as well of the Nor'easter of January 1992 that curled back into the Mid-Atlantic. I do think that one will be added to HURDAT when reanalysis gets to the early 1990s.
Reminds me of Alex of 2016
https://en.wikipedia.org/wiki/Hurricane_Alex_(2016)
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Re: ATL: INVEST 90L - Discussion
cycloneye wrote:https://i.imgur.com/5DQ1Cpe.png
I'd pull the trigger on it and give it advisories for Tropical Storm Arlene there personally.
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- cycloneye
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Re: ATL: INVEST 90L - Discussion
They have been tracking it since Sunday at 12z.
AL, 90, 2023011512, , BEST, 0, 373N, 697W, 45, 989, LO, 0, , 0, 0, 0, 0, 0, 0, 0, 0, 0, L, 0, , 0, 0, GENESIS001, , 0, , 0, 0, 0, 0, genesis-num, 001,
AL, 90, 2023011518, , BEST, 0, 376N, 689W, 45, 989, LO, 0, , 0, 0, 0, 0, 0, 0, 0, 0, 0, L, 0, , 0, 0, GENESIS001, , 0, , 0, 0, 0, 0, genesis-num, 001,
AL, 90, 2023011600, , BEST, 0, 376N, 683W, 45, 989, LO, 0, , 0, 0, 0, 0, 0, 0, 0, 0, 0, L, 0, , 0, 0, GENESIS001, , 0, , 0, 0, 0, 0, genesis-num, 001,
AL, 90, 2023011606, , BEST, 0, 373N, 673W, 50, 986, LO, 0, , 0, 0, 0, 0, 0, 0, 0, 0, 0, L, 0, , 0, 0, GENESIS001, , 0, , 0, 0, 0, 0, genesis-num, 001,
AL, 90, 2023011612, , BEST, 0, 370N, 657W, 50, 986, LO, 34, NEQ, 120, 240, 240, 120, 1012, 500, 50, 0, 0, L, 0, , 0, 0, INVEST, S, 0, , 0, 0, 0, 0, genesis-num, 001, SPAWNINVEST, al712023 to al902023,
AL, 90, 2023011612, , BEST, 0, 370N, 657W, 50, 986, LO, 50, NEQ, 0, 60, 60, 0, 1012, 500, 50, 0, 0, L, 0, , 0, 0, INVEST, S, 0, , 0, 0, 0, 0, genesis-num, 001, SPAWNINVEST, al712023 to al902023,
AL, 90, 2023011618, , BEST, 0, 378N, 636W, 50, 986, LO, 34, NEQ, 120, 240, 240, 120, 1012, 500, 50, 0, 0, L, 0, , 0, 0, INVEST, S, 0, , 0, 0, 0, 0, genesis-num, 001,
AL, 90, 2023011618, , BEST, 0, 378N, 636W, 50, 986, LO, 50, NEQ, 0, 60, 60, 0, 1012, 500, 50, 0, 0, L, 0, , 0, 0, INVEST, S, 0, , 0, 0, 0, 0, genesis-num, 001,
AL, 90, 2023011518, , BEST, 0, 376N, 689W, 45, 989, LO, 0, , 0, 0, 0, 0, 0, 0, 0, 0, 0, L, 0, , 0, 0, GENESIS001, , 0, , 0, 0, 0, 0, genesis-num, 001,
AL, 90, 2023011600, , BEST, 0, 376N, 683W, 45, 989, LO, 0, , 0, 0, 0, 0, 0, 0, 0, 0, 0, L, 0, , 0, 0, GENESIS001, , 0, , 0, 0, 0, 0, genesis-num, 001,
AL, 90, 2023011606, , BEST, 0, 373N, 673W, 50, 986, LO, 0, , 0, 0, 0, 0, 0, 0, 0, 0, 0, L, 0, , 0, 0, GENESIS001, , 0, , 0, 0, 0, 0, genesis-num, 001,
AL, 90, 2023011612, , BEST, 0, 370N, 657W, 50, 986, LO, 34, NEQ, 120, 240, 240, 120, 1012, 500, 50, 0, 0, L, 0, , 0, 0, INVEST, S, 0, , 0, 0, 0, 0, genesis-num, 001, SPAWNINVEST, al712023 to al902023,
AL, 90, 2023011612, , BEST, 0, 370N, 657W, 50, 986, LO, 50, NEQ, 0, 60, 60, 0, 1012, 500, 50, 0, 0, L, 0, , 0, 0, INVEST, S, 0, , 0, 0, 0, 0, genesis-num, 001, SPAWNINVEST, al712023 to al902023,
AL, 90, 2023011618, , BEST, 0, 378N, 636W, 50, 986, LO, 34, NEQ, 120, 240, 240, 120, 1012, 500, 50, 0, 0, L, 0, , 0, 0, INVEST, S, 0, , 0, 0, 0, 0, genesis-num, 001,
AL, 90, 2023011618, , BEST, 0, 378N, 636W, 50, 986, LO, 50, NEQ, 0, 60, 60, 0, 1012, 500, 50, 0, 0, L, 0, , 0, 0, INVEST, S, 0, , 0, 0, 0, 0, genesis-num, 001,
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- InfernoFlameCat
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Re: ATL: INVEST 90L - Discussion
Looks fully tropical with a closed eyewall. I do not understand why this is not named. More than any other storm ever.
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Re: ATL: INVEST 90L - Discussion
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Sorry for the bad English sometimes...!
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- Category5Kaiju
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Re: ATL: INVEST 90L - Discussion
InfernoFlameCat wrote:Looks fully tropical with a closed eyewall. I do not understand why this is not named. More than any other storm ever.
It would be almost a criminal injustice for Colin 2022 to get a name and this one to not. Like, yes, Colin 2022 did meet the raw requirements for a TS, but this thing looks so much healthier and more bona fide than Colin 2022 haha
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Re: ATL: INVEST 90L - Discussion
From the NHC site, the official definition of a tropical cyclone:
A warm-core non-frontal synoptic-scale cyclone, originating over tropical or subtropical waters, with organized deep convection and a closed surface wind circulation about a well-defined center. Once formed, a tropical cyclone is maintained by the extraction of heat energy from the ocean at high temperature and heat export at the low temperatures of the upper troposphere. In this they differ from extratropical cyclones, which derive their energy from horizontal temperature contrasts in the atmosphere (baroclinic effects).
I would argue it checks all the boxes. It's warm core, non-frontal, over subtropical waters, solid core and convection.
A warm-core non-frontal synoptic-scale cyclone, originating over tropical or subtropical waters, with organized deep convection and a closed surface wind circulation about a well-defined center. Once formed, a tropical cyclone is maintained by the extraction of heat energy from the ocean at high temperature and heat export at the low temperatures of the upper troposphere. In this they differ from extratropical cyclones, which derive their energy from horizontal temperature contrasts in the atmosphere (baroclinic effects).
I would argue it checks all the boxes. It's warm core, non-frontal, over subtropical waters, solid core and convection.
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- Hurricane2022
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Re: ATL: INVEST 90L - Discussion
Category5Kaiju wrote:InfernoFlameCat wrote:Looks fully tropical with a closed eyewall. I do not understand why this is not named. More than any other storm ever.
It would be almost a criminal injustice for Teresa 2021 to get a name and this one to not. Like, yes, Teresa 2021 did meet the raw requirements for a TS, but this thing looks so much healthier and more bona fide than Teresa 2021haha
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Sorry for the bad English sometimes...!
For reliable and detailed information for any meteorological phenomenon, please consult the National Hurricane Center, Joint Typhoon Warning Center , or your local Meteo Center.
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Una cvm Christo, pro Christo, et in Christo. Sit nomen Domini benedictvm.
For reliable and detailed information for any meteorological phenomenon, please consult the National Hurricane Center, Joint Typhoon Warning Center , or your local Meteo Center.
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Una cvm Christo, pro Christo, et in Christo. Sit nomen Domini benedictvm.
Re: ATL: INVEST 90L - Discussion
It looks like an actual hurricane. Curious as to how this system has managed to appear nearly fully tropical over marginal SSTs.
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Re: ATL: INVEST 90L - Discussion
Patrick99 wrote:It looks like an actual hurricane. Curious as to how this system has managed to appear nearly fully tropical over marginal SSTs.
At the very least this is a 50kt-60kt cyclone. I don't see why they're dragging their feet on naming this.
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Re: ATL: INVEST 90L - Discussion
Patrick99 wrote:It looks like an actual hurricane. Curious as to how this system has managed to appear nearly fully tropical over marginal SSTs.
Very cold upper levels allowing for a vertical temperature differeration, which allows for air to "rise" leading to condensation leading to convection.
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- cycloneye
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Re: ATL: INVEST 90L - Discussion
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- cycloneye
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Re: ATL: INVEST 90L - Discussion
Good thread by Tyler.
https://twitter.com/TylerJStanfield/status/1615061733256663068
https://twitter.com/TylerJStanfield/status/1615082911773982720
https://twitter.com/TylerJStanfield/status/1615061733256663068
https://twitter.com/TylerJStanfield/status/1615082911773982720
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- JetFuel_SE
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Re: ATL: INVEST 90L - Discussion
CrazyC83 wrote:This does remind me somewhat as well of the Nor'easter of January 1992 that curled back into the Mid-Atlantic. I do think that one will be added to HURDAT when reanalysis gets to the early 1990s.
Sooo... like in the 2040s?
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Re: ATL: INVEST 90L - Discussion
JetFuel_SE wrote:CrazyC83 wrote:This does remind me somewhat as well of the Nor'easter of January 1992 that curled back into the Mid-Atlantic. I do think that one will be added to HURDAT when reanalysis gets to the early 1990s.
Sooo... like in the 2040s?
There are likely 4 more reanalyses before then, so I suspect about 10 years away at the current rate unless things get expedited. The next one is 1971-75 (hopefully late this year).
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- cycloneye
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Re: ATL: INVEST 90L - Discussion
Meso sector loop impressive.


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Re: ATL: INVEST 90L - Discussion
CrazyC83 wrote:JetFuel_SE wrote:CrazyC83 wrote:This does remind me somewhat as well of the Nor'easter of January 1992 that curled back into the Mid-Atlantic. I do think that one will be added to HURDAT when reanalysis gets to the early 1990s.
Sooo... like in the 2040s?
There are likely 4 more reanalyses before then, so I suspect about 10 years away at the current rate unless things get expedited. The next one is 1971-75 (hopefully late this year).
NHC does perform a post-analysis after every season, so there's a decent chance that this could get added to the database this winter.
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Re: ATL: INVEST 90L - Discussion
As a reminder, questioning and criticism of NHC in cases like this are fine, just as long as you do it in a respectful manner.
Think about your choices of words before you hit the 'Submit" key.
Think about your choices of words before you hit the 'Submit" key.
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Re: ATL: INVEST 90L - Discussion
IMO this is 100% sub-tropical and nameable. May be any inconsequential system but I would name it
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