NATL: HUMBERTO - Remnants - Discussion

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Re: NATL: HUMBERTO - Hurricane - Discussion

#161 Postby MarioProtVI » Fri Sep 26, 2025 3:29 pm

USTropics wrote:
tolakram wrote:
aspen wrote:The lack of attention Humberto — and 94L, to a lesser extent — are getting is so odd. No posted recon plans for Humberto nor meso sectors for either yet. At least we had a low-level and an upper-level flight, but I’d expect much more recon activity than what we’re seeing.


Why? 94L is more important at the moment as it threatens landfall. These are exciting systems but recon doesn't run just to satisfy our curiosity. They will be VERY busy over the next few days, I would delay as long as possible.


Can confirm this is exactly what NHC is doing. There is an untasked recon flight for Humberto later this evening (per my sources). They will be flying into Humberto as the system approaches Bermuda, but for now 94L remains somewhat more of a mystery (how does it interact with the ULL over the Southeast, how does shear and dry air subsidence dump from Humberto impact development, etc.). A lot of uncertainty in the models, which is why we need moar data.

Is this going to be an untasked center pass? Because if so they could actually catch Humberto as it’s peaking.
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Re: NATL: HUMBERTO - Hurricane - Discussion

#162 Postby cycloneye » Fri Sep 26, 2025 3:36 pm

500 PM AST Fri Sep 26 2025

...HUMBERTO RAPIDLY STRENGTHENS TO A MAJOR HURRICANE...
...FURTHER INTENSIFICATION EXPECTED OVER THE CENTRAL ATLANTIC...
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Re: NATL: HUMBERTO - Hurricane - Discussion

#163 Postby Teban54 » Fri Sep 26, 2025 3:46 pm

Image
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Re: NATL: HUMBERTO - Hurricane - Discussion

#164 Postby Travorum » Fri Sep 26, 2025 3:47 pm

NHC is now forecasting 130kts.

FORECAST POSITIONS AND MAX WINDS

INIT 26/2100Z 22.3N 58.1W 100 KT 115 MPH
12H 27/0600Z 22.4N 59.0W 115 KT 130 MPH
24H 27/1800Z 22.8N 60.5W 125 KT 145 MPH
36H 28/0600Z 23.4N 62.4W 130 KT 150 MPH
48H 28/1800Z 24.6N 64.3W 125 KT 145 MPH
60H 29/0600Z 26.0N 66.0W 120 KT 140 MPH
72H 29/1800Z 27.7N 67.5W 115 KT 130 MPH
96H 30/1800Z 31.7N 68.8W 100 KT 115 MPH
120H 01/1800Z 35.5N 63.5W 90 KT 105 MPH
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Re: NATL: HUMBERTO - Hurricane - Discussion

#165 Postby StormWeather » Fri Sep 26, 2025 3:50 pm

Travorum wrote:NHC is now forecasting 130kts.

FORECAST POSITIONS AND MAX WINDS

INIT 26/2100Z 22.3N 58.1W 100 KT 115 MPH
12H 27/0600Z 22.4N 59.0W 115 KT 130 MPH
24H 27/1800Z 22.8N 60.5W 125 KT 145 MPH
36H 28/0600Z 23.4N 62.4W 130 KT 150 MPH
48H 28/1800Z 24.6N 64.3W 125 KT 145 MPH
60H 29/0600Z 26.0N 66.0W 120 KT 140 MPH
72H 29/1800Z 27.7N 67.5W 115 KT 130 MPH
96H 30/1800Z 31.7N 68.8W 100 KT 115 MPH
120H 01/1800Z 35.5N 63.5W 90 KT 105 MPH

I was expecting them to do this when the 18Z intensity guidance came out on CyclonicWx.
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Re: NATL: HUMBERTO - Hurricane - Discussion

#166 Postby Travorum » Fri Sep 26, 2025 4:50 pm

Sunset on Humberto:

Image
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Re: NATL: HUMBERTO - Hurricane - Discussion

#167 Postby sasha_B » Fri Sep 26, 2025 5:13 pm

Raw T#s for Humberto are up to 6.4 with the final CI approaching 6.0; it's likely at or near Category 4 despite officially just reaching Category 3 an hour ago. Either way, intensification has been rapid indeed: officially, 50 kts in 24 hours, plausibly closer to 60~65 kts, with the corresponding drop in pressure being somewhere between 38~50 hPa over the same 24h period. This season, despite its below-average ACE/storm count to date, is 3-for-3 on hurricanes dramatically overperforming their initial forecasts.
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Re: NATL: HUMBERTO - Hurricane - Discussion

#168 Postby abajan » Fri Sep 26, 2025 5:15 pm

Dr. Cowan's latest video:



Link: https://youtu.be/pjDQVhvT4Ms
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Re: NATL: HUMBERTO - Hurricane - Discussion

#169 Postby Teban54 » Fri Sep 26, 2025 5:26 pm

The eye is rapidly improving (again):

Image
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Re: NATL: HUMBERTO - Hurricane - Discussion

#170 Postby Travorum » Fri Sep 26, 2025 5:40 pm

There's CI# 6.0 on ADT:

UW - CIMSS
ADVANCED DVORAK TECHNIQUE
ADT-Version 9.1
Tropical Cyclone Intensity Algorithm

----- Current Analysis -----
Date : 26 SEP 2025 Time : 221019 UTC
Lat : 22:07:47 N Lon : 58:15:35 W


CI# /Pressure/ Vmax
6.0 / 947.4mb/115.0kt


Final T# Adj T# Raw T#
6.0 6.3 6.4

Estimated radius of max. wind based on IR : 15 km

Center Temp : +13.3C Cloud Region Temp : -68.5C
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Re: NATL: HUMBERTO - Hurricane - Discussion

#171 Postby StormWeather » Fri Sep 26, 2025 5:41 pm

Travorum wrote:There's CI# 6.0 on ADT:

UW - CIMSS
ADVANCED DVORAK TECHNIQUE
ADT-Version 9.1
Tropical Cyclone Intensity Algorithm

----- Current Analysis -----
Date : 26 SEP 2025 Time : 221019 UTC
Lat : 22:07:47 N Lon : 58:15:35 W


CI# /Pressure/ Vmax
6.0 / 947.4mb/115.0kt


Final T# Adj T# Raw T#
6.0 6.3 6.4

Estimated radius of max. wind based on IR : 15 km

Center Temp : +13.3C Cloud Region Temp : -68.5C

So pretty much a raw instantaneous Category 4 off of that?! It literally was just a Tropical Storm this morning!
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Re: NATL: HUMBERTO - Hurricane - Discussion

#172 Postby Travorum » Fri Sep 26, 2025 5:51 pm

StormWeather wrote:
Travorum wrote:There's CI# 6.0 on ADT:

UW - CIMSS
ADVANCED DVORAK TECHNIQUE
ADT-Version 9.1
Tropical Cyclone Intensity Algorithm

----- Current Analysis -----
Date : 26 SEP 2025 Time : 221019 UTC
Lat : 22:07:47 N Lon : 58:15:35 W


CI# /Pressure/ Vmax
6.0 / 947.4mb/115.0kt


Final T# Adj T# Raw T#
6.0 6.3 6.4

Estimated radius of max. wind based on IR : 15 km

Center Temp : +13.3C Cloud Region Temp : -68.5C

So pretty much a raw instantaneous Category 4 off of that?! It literally was just a Tropical Storm this morning!


Not even raw instantaneous, this is the sustained trend. Raw T# has been above 6.0 (115kts/Cat 4) for 2 hours. Quite the impressive intensification over the day!
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Re: NATL: HUMBERTO - Hurricane - Discussion

#173 Postby StormWeather » Fri Sep 26, 2025 5:54 pm

Travorum wrote:
StormWeather wrote:
Travorum wrote:There's CI# 6.0 on ADT:

UW - CIMSS
ADVANCED DVORAK TECHNIQUE
ADT-Version 9.1
Tropical Cyclone Intensity Algorithm

----- Current Analysis -----
Date : 26 SEP 2025 Time : 221019 UTC
Lat : 22:07:47 N Lon : 58:15:35 W


CI# /Pressure/ Vmax
6.0 / 947.4mb/115.0kt


Final T# Adj T# Raw T#
6.0 6.3 6.4

Estimated radius of max. wind based on IR : 15 km

Center Temp : +13.3C Cloud Region Temp : -68.5C

So pretty much a raw instantaneous Category 4 off of that?! It literally was just a Tropical Storm this morning!


Not even raw instantaneous, this is the sustained trend. Raw T# has been above 6.0 (115kts/Cat 4) for 2 hours. Quite the impressive intensification over the day!

So from 50 kts this morning to potentially 115-120 kts by tomorrow morning UTC? Omg
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Re: NATL: HUMBERTO - Hurricane - Discussion

#174 Postby Beef Stew » Fri Sep 26, 2025 6:03 pm

We’re (quite likely) about to have the first three hurricanes of this season all peak at 120 kts or more… quite an unusual feat.
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Re: NATL: HUMBERTO - Hurricane - Discussion

#175 Postby zzzh » Fri Sep 26, 2025 6:11 pm

Humberto is moving to the SW.
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Re: NATL: HUMBERTO - Hurricane - Discussion

#176 Postby Travorum » Fri Sep 26, 2025 6:12 pm

If you broke constraints this would be DT6.5. If that W ring gets a little thicker...

Image
Last edited by Travorum on Fri Sep 26, 2025 6:45 pm, edited 1 time in total.
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Re: NATL: HUMBERTO - Hurricane - Discussion

#177 Postby storm_in_a_teacup » Fri Sep 26, 2025 6:28 pm

sasha_B wrote:Raw T#s for Humberto are up to 6.4 with the final CI approaching 6.0; it's likely at or near Category 4 despite :eek: officially just reaching Category 3 an hour ago. Either way, intensification has been rapid indeed: officially, 50 kts in 24 hours, plausibly closer to 60~65 kts, with the corresponding drop in pressure being somewhere between 38~50 hPa over the same 24h period. This season, despite its below-average ACE/storm count to date, is 3-for-3 on hurricanes dramatically overperforming their initial forecasts.


Oh wow how my boy has grown :eek:
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Re: NATL: HUMBERTO - Hurricane - Discussion

#178 Postby cheezyWXguy » Fri Sep 26, 2025 6:31 pm

Shame we won’t have recon for a while, though I understand why. I’d be shocked if this wasn’t officially a cat4 by the 11pm advisory
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Re: NATL: HUMBERTO - Hurricane - Discussion

#179 Postby cheezyWXguy » Fri Sep 26, 2025 6:54 pm

I also wonder if Humberto will go through an ewrc soon. IR seems to give hints that it might happen soon? Plus I recall some model runs from earlier that show Humberto transitioning to an annular structure at some point with a larger eye, so it seems plausible to me.
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Re: NATL: HUMBERTO - Hurricane - Discussion

#180 Postby zzzh » Fri Sep 26, 2025 6:59 pm

cheezyWXguy wrote:I also wonder if Humberto will go through an ewrc soon. IR seems to give hints that it might happen soon? Plus I recall some model runs from earlier that show Humberto transitioning to an annular structure at some point with a larger eye, so it seems plausible to me.

Image
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