NATL: MELISSA - Aftermath - Discussion: Josh Morgerman video of Melissa is up

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Re: NATL: MELISSA - Hurricane - Discussion

#1261 Postby CrazyC83 » Mon Oct 27, 2025 1:15 am

I'd go with 135 kt for the intensity. Very little weight on the SFMR, but the FL winds and pressure drop support a higher intensity.
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Re: NATL: MELISSA - Hurricane - Discussion

#1262 Postby MarioProtVI » Mon Oct 27, 2025 1:15 am

Travorum wrote:
Teban54 wrote:With such a huge discrepancy in FL and SFMR winds, as well as continued skepticism of SFMR at higher ends... Will the 159 kt SFMR be thrown out completely?


I think maybe not completely disregarded but maybe weighted less; between the CI# 8.1 ADT, the T7.5 subjective fix that will probably come through at 06z, the FL winds, and the SFMR measurement, there's probably enough support for at least 140kts.

NHC has thrown out SFMRs beginning last year in high end hurricanes because of its faulty issues so they’re only going by the FL->surface reduction method. It doesn’t matter if satellite estimates think it’s a 5, recon weighs much more over that, and recon supports at most 135 kt. Basically this is just Eta 2.0.
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Re: NATL: MELISSA - Hurricane - Discussion

#1263 Postby ElectricStorm » Mon Oct 27, 2025 1:18 am

I also agree with 135kts being a good estimate, and with no double wind max this is well on its way to 140kts+ very soon unless something drastically changes.
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Re: NATL: MELISSA - Hurricane - Discussion

#1264 Postby mrbagyo » Mon Oct 27, 2025 1:18 am

MarioProtVI wrote:
Travorum wrote:
Teban54 wrote:With such a huge discrepancy in FL and SFMR winds, as well as continued skepticism of SFMR at higher ends... Will the 159 kt SFMR be thrown out completely?


I think maybe not completely disregarded but maybe weighted less; between the CI# 8.1 ADT, the T7.5 subjective fix that will probably come through at 06z, the FL winds, and the SFMR measurement, there's probably enough support for at least 140kts.

NHC has thrown out SFMRs beginning last year in high end hurricanes because of its faulty issues so they’re only going by the FL->surface reduction method. It doesn’t matter if satellite estimates think it’s a 5, recon weighs much more over that, and recon supports at most 135 kt. Basically this is just Eta 2.0.


They badly need to recalibrate the algorithm for the ADT.
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Re: NATL: MELISSA - Hurricane - Discussion

#1265 Postby CrazyC83 » Mon Oct 27, 2025 1:19 am

ElectricStorm wrote:I also agree with 135kts being a good estimate, and with no double wind max this is well on its way to 140kts+ very soon unless something drastically changes.


Pressure is likely around 922 mb from what I could see.
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Re: NATL: MELISSA - Hurricane - Discussion

#1266 Postby Fancy1002 » Mon Oct 27, 2025 1:19 am

CrazyC83 wrote:I'd go with 135 kt for the intensity. Very little weight on the SFMR, but the FL winds and pressure drop support a higher intensity.

So would it be correct to assume that it will be category five by morning, as long as there aren’t any additional surprises like an Eyewall replacement cycle.
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Re: NATL: MELISSA - Hurricane - Discussion

#1267 Postby CrazyC83 » Mon Oct 27, 2025 1:20 am

Fancy1002 wrote:
CrazyC83 wrote:I'd go with 135 kt for the intensity. Very little weight on the SFMR, but the FL winds and pressure drop support a higher intensity.

So would it be correct to assume that it will be category five by morning, as long as there aren’t any additional surprises like an Eyewall replacement cycle.


Most likely. The pressure seems to be falling again at a good rate.
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Re: NATL: MELISSA - Hurricane - Discussion

#1268 Postby WaveBreaking » Mon Oct 27, 2025 1:20 am

Eye’s been having some noticeable trochoidal oscillation recently
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Re: NATL: MELISSA - Hurricane - Discussion

#1269 Postby cheezyWXguy » Mon Oct 27, 2025 1:23 am

ElectricStorm wrote:I also agree with 135kts being a good estimate, and with no double wind max this is well on its way to 140kts+ very soon unless something drastically changes.

Since the northern quadrant hasn’t been sampled yet, there’s a chance it already does have 140kt winds.
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Re: NATL: MELISSA - Hurricane - Discussion

#1270 Postby mrbagyo » Mon Oct 27, 2025 1:24 am

-90 cloudtops are exploding on the eastern sector of the CDO.
could this be a precursor to EWRC?

Image
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Re: NATL: MELISSA - Hurricane - Discussion

#1271 Postby CrazyC83 » Mon Oct 27, 2025 1:26 am

mrbagyo wrote:-90 cloudtops are exploding on the eastern sector of the CDO.
could this be a precursor to EWRC?

https://s12.gifyu.com/images/b3Qu3.gif


Doubtful. It appeared to go through a pseudo-EWRC today and I don't think it has anything concentric?
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Re: NATL: MELISSA - Hurricane - Discussion

#1272 Postby CrazyC83 » Mon Oct 27, 2025 1:29 am

In general, the SFMR should have little weight around 130 kt and up, and thrown out completely around 150 kt and up. I'd want to see a flight-level wind of at least 150 kt before going cat 5, or a dropsonde suggesting such.
Last edited by CrazyC83 on Mon Oct 27, 2025 1:30 am, edited 1 time in total.
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Re: NATL: MELISSA - Hurricane - Discussion

#1273 Postby WaveBreaking » Mon Oct 27, 2025 1:30 am

Latest dropsonde shows RH is still high in the eye, so if there is any EWRC trying to start, then it probably won’t happen anytime soon.
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Re: NATL: MELISSA - Hurricane - Discussion

#1274 Postby Teban54 » Mon Oct 27, 2025 1:33 am

The last frame has the eye entirely filled with thunderstorms...

Image
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Re: NATL: MELISSA - Hurricane - Discussion

#1275 Postby Chris_in_Tampa » Mon Oct 27, 2025 1:35 am

Teban54 wrote:The last frame has the eye entirely filled with thunderstorms...

https://i.imgur.com/tvw7XOs.gif

Those are lightning flashes. (It means it's really strengthening basically)
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Re: NATL: MELISSA - Hurricane - Discussion

#1276 Postby chaser1 » Mon Oct 27, 2025 1:49 am

Chris_in_Tampa wrote:
Teban54 wrote:The last frame has the eye entirely filled with thunderstorms...

https://i.imgur.com/tvw7XOs.gif

Those are lightning flashes. (It means it's really strengthening basically)


That or, a dozen small ships and all of the drunk-off-their-ass passengers caught in the eye and throwing a Rave.
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Re: NATL: MELISSA - Hurricane - Discussion

#1277 Postby CrazyC83 » Mon Oct 27, 2025 1:54 am

chaser1 wrote:
Chris_in_Tampa wrote:
Teban54 wrote:The last frame has the eye entirely filled with thunderstorms...

https://i.imgur.com/tvw7XOs.gif

Those are lightning flashes. (It means it's really strengthening basically)


That or, a dozen small ships and all of the drunk-off-their-ass passengers caught in the eye and throwing a Rave.


Like the SS Phemius in the 1932 hurricane? (The one that measured 915 mb outside the eye in brutal winds and survived to tell about it)
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Re: NATL: MELISSA - Hurricane - Discussion

#1278 Postby chaser1 » Mon Oct 27, 2025 1:57 am

CrazyC83 wrote:
chaser1 wrote:
Chris_in_Tampa wrote:Those are lightning flashes. (It means it's really strengthening basically)


That or, a dozen small ships and all of the drunk-off-their-ass passengers caught in the eye and throwing a Rave.


Like the SS Phemius in the 1932 hurricane? (The one that measured 915 mb outside the eye in brutal winds and survived to tell about it)


Are you serious? I never heard of that event.
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Re: NATL: MELISSA - Hurricane - Discussion

#1279 Postby chaser1 » Mon Oct 27, 2025 2:02 am

There simply are NO amount of exotic mushrooms that could shake that level of PTSD which those folks developed following an experience like that :double:
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Re: NATL: MELISSA - Hurricane - Discussion

#1280 Postby abajan » Mon Oct 27, 2025 2:04 am

6z Best Track:
AL, 13, 2025102706, , BEST, 0, 163N, 777W, 130, 924, HU...
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