ATL: HANNA - Remnants - Discussion

[sgastorm]

Always fascinating to see Recon data come in during a mission, especially when it’s an important mission like this one close to land. It’s great to be back on the fourm. I’ve been around though. The season so far has been, well, active. Especially with daredevil Gonzalo.

According to the schedule, an AF HH was suppose to take off about an hour ago. Haven't seen any indication of that yet. Any info?

The AF mission is for Gonzalo. It is underway now. Only NOAA aircraft are tasked with Hanna missions.

[longhorn2004]

Local weather man is horrible. Is the reason its going due west due to a high pressure to the north?

[HurricaneAndre2008]

Current Intensity Analysis



UW - CIMSS
ADVANCED DVORAK TECHNIQUE
ADT-Version 9.0
Tropical Cyclone Intensity Algorithm

----- Current Analysis -----
Date : 24 JUL 2020 Time : 152024 UTC
Lat : 27:12:46 N Lon : 93:14:57 W


CI# /Pressure/ Vmax
3.2 / 991.7mb/ 49.0kt

[mcallum177]

How do you pull up KGUL's pressure? My GR Level 3 doesn't show pressure for that station and the NDBC website does not show it either.

This oil rig ( 98 ft)

pressure 1002 mb in western eyewall. looks to take a direct hit from the center.

given the pressure field from the plane I would say we see the pressure drop to 998 or 999 at this station.

[HurricaneAndre2008]

Local weather man is horrible. Is the reason its going due west due to a high pressure to the north?

Yes that's the very reason

[Aric Dunn]

How do you pull up KGUL's pressure? My GR Level 3 doesn't show pressure for that station and the NDBC website does not show it either.

This oil rig ( 98 ft)

pressure 1002 mb in western eyewall. looks to take a direct hit from the center.

given the pressure field from the plane I would say we see the pressure drop to 998 or 999 at this station.

allison house

[tropicwatch]

Always fascinating to see Recon data come in during a mission, especially when it’s an important mission like this one close to land. It’s great to be back on the fourm. I’ve been around though. The season so far has been, well, active. Especially with daredevil Gonzalo.

According to the schedule, an AF HH was suppose to take off about an hour ago. Haven't seen any indication of that yet. Any info?

The AF mission is for Gonzalo. It is underway now. Only NOAA aircraft are tasked with Hanna missions.

oopps

[Aric Dunn]

Well I am sure others have said it.

but regardless if it becomes a hurricane.. looks like it will be heading to very sparsly populated area..

HUrricane Bret territory.

[tolakram]

SLIDER mesoscale, 2 minute intervals

https://rammb-slider.cira.colostate.edu/?sat=goes-16&z=2&im=24&ts=2&st=0&et=0&speed=130&motion=loop&map=1&lat=0&opacity%5B0%5D=1&hidden%5B0%5D=0&pause=0&slider=-1&hide_controls=0&mouse_draw=0&follow_feature=0&follow_hide=0&s=rammb-slider&sec=mesoscale_01&p%5B0%5D=band_02&x=920.8892059326172&y=870.2926025390625

[Hypercane_Kyle]

Well I am sure others have said it.

but regardless if it becomes a hurricane.. looks like it will be heading to very sparsly populated area..

HUrricane Bret territory.

SpaceX has an entire launch facility just to the south of the track.

[hipshot]

SLIDER mesoscale, 2 minute intervals

https://rammb-slider.cira.colostate.edu/?sat=goes-16&z=2&im=24&ts=2&st=0&et=0&speed=130&motion=loop&map=1&lat=0&opacity%5B0%5D=1&hidden%5B0%5D=0&pause=0&slider=-1&hide_controls=0&mouse_draw=0&follow_feature=0&follow_hide=0&s=rammb-slider&sec=mesoscale_01&p%5B0%5D=band_02&x=920.8892059326172&y=870.2926025390625

Is the center the small clearing spot to the NW of the heavy convection?

[mcallum177]

RGV is being hit exceptionally harder than the rest of the state by the pandemic. That is certainly concerning when you take into account that a TS maybe CAT 1 storm is about to hit the area and bring in flooding hazards.

Well I am sure others have said it.

but regardless if it becomes a hurricane.. looks like it will be heading to very sparsly populated area..

HUrricane Bret territory.

SpaceX has an entire launch facility just to the south of the track.

[Steve]

Well I am sure others have said it.

but regardless if it becomes a hurricane.. looks like it will be heading to very sparsly populated area..

HUrricane Bret territory.

You have Kings Ranch and all that, but

Brownsvillle metro - 415,000
McAllen-Reynossa - 1,500,000
Matamoros - 1,388,000
Monterrey - 4,690,000

Those are just some of the metros and cities likely to be impacted. There are sparse places between Port Isabel and Corpus Christi, but the cities are pretty populated.

[SoupBone]

Well I am sure others have said it.

but regardless if it becomes a hurricane.. looks like it will be heading to very sparsly populated area..

HUrricane Bret territory.

The death ridge beating his chest this morning. It's amazing that Houston was being threatened even just several days ago, then that ridge pumped up.

[wx98]

Well I am sure others have said it.

but regardless if it becomes a hurricane.. looks like it will be heading to very sparsly populated area..

HUrricane Bret territory.

Yes, if it lands at Padre Island in middle of that bend south of Corpus, then there is almost nothing there. Only a few small communities several miles inland.

[SouthDadeFish]

It seems pretty clear to me that vertical wind shear is impacting Hanna quite a bit. TDR observations show the mid-level center is offset a bit to the SW of the low-level center. Nonetheless, it looks like an inner-core is starting to shape up on ground-based radar (KHGX). I suspect we may see things begin to ramp up this evening, unless shear causes a collapse of the inner core.

I should add, regardless of intensity, Hanna poses a significant flooding threat. This aspect of the storm has not gotten enough attention.

[Aric Dunn]

KGUL still in eyewall .. pressure 1001 mb..

does appear that pressure below 1000 mb in the center. 998mb maybe

[Aric Dunn]

Well I am sure others have said it.

but regardless if it becomes a hurricane.. looks like it will be heading to very sparsly populated area..

HUrricane Bret territory.

You have Kings Ranch and all that, but

Brownsvillle metro - 415,000
McAllen-Reynossa - 1,500,000
Matamoros - 1,388,000
Monterrey - 4,690,000

Those are just some of the metros and cities likely to be impacted. There are sparse places between Port Isabel and Corpus Christi, but the cities are pretty populated.

impacts yes..

im just speaking of the landfall where the higher winds would be.. between Corpus and Brownsville.

[Kazmit]

Hannah looks like it's tripled in size today.

[Aric Dunn]

an actual eye does seem to be trying to clear out of visible..

convection slowly building the west side.

when it turns west and wsw and slows down shear will be less.

looks at 12z models it still have 24 hours over water...... plenty of time to do its thing.