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re: Helene - Recovery Begins...Devastating Flash Flooding in Western NC and Eastern TN

Posted on 9/22/24 at 10:15 pm to
Posted by shell01
Marianna, FL
Member since Jul 2014
806 posts
Posted on 9/22/24 at 10:15 pm to
quote:

IIRC Michael was spun up in a similar way and they absolutely nailed that forecast from the get go.


Yep. I remember thinking "ah we're fine they never get it right the first forecast"....and then a Cat5 Michael went over our house just as they predicted.
This post was edited on 9/22/24 at 10:24 pm
Posted by rds dc
Member since Jun 2008
21518 posts
Posted on 9/22/24 at 10:21 pm to
quote:

What does transient convective feature mean??


Those thunderstorms probably won't last much longer.
Posted by BZ504
Texas
Member since Oct 2005
13612 posts
Posted on 9/22/24 at 10:25 pm to
This storm will probably hit Biloxi. These tracks early on have been off my a good bit.
Posted by rds dc
Member since Jun 2008
21518 posts
Posted on 9/22/24 at 10:30 pm to
Looking at the 18z GFS and Euro, there aren't huge differences once this gets in the Gulf. It appears that one of the primary things keeping the Euro in check is that development is slower over the next 48-60 hrs. This might be because the Euro isn't as quick to kill off 10-E, which allows for the outflow from 10-E to disrupt 97L.
Posted by Weekend Warrior79
Member since Aug 2014
21727 posts
Posted on 9/22/24 at 10:32 pm to
Those anomaly models always make me wonder what they’re seeing. HMNI really has a bone to pick w Disney
Posted by fr33manator
Baton Rouge
Member since Oct 2010
134623 posts
Posted on 9/22/24 at 10:37 pm to
Booooooooo! Boooooooo on you!!!!!
Posted by jaytothen
Member since Jan 2020
8679 posts
Posted on 9/22/24 at 10:38 pm to
quote:

Also, the rate at which it is moving eastward is an indication that it probably is a transient convective feature.


Posted by moontigr
Dark Side of the Moon
Member since Nov 2020
7574 posts
Posted on 9/22/24 at 10:44 pm to
That one is headed to the OBX/Va. Beach
Posted by Rhino5
Atlanta
Member since Nov 2014
30963 posts
Posted on 9/22/24 at 10:57 pm to
Looks to have a lot of undisturbed time to build over the next week.
Posted by SWLA92
SWLA
Member since Feb 2015
5047 posts
Posted on 9/22/24 at 11:03 pm to
00z GFS doubling down with a landfall near the big bend, southwest of Perry at 942mb
Posted by LegendInMyMind
Member since Apr 2019
75116 posts
Posted on 9/22/24 at 11:27 pm to
It drops the bottom out of the pressure as the storm shoots the gap/dances around Cuba and the Yucatan. It goes from 981mb to 956mb as it threads that needle. Not that it can't happen, but it would take perfect placement to drop 25mb in that area.
Posted by SWLA92
SWLA
Member since Feb 2015
5047 posts
Posted on 9/22/24 at 11:33 pm to
Yeah talk about bad luck but we’ve seen it happens before. 20 miles one way could make the difference of a cat 1 or a cat 4 unfortunately
Posted by OvertheDwayneBowe
Member since Sep 2016
3527 posts
Posted on 9/22/24 at 11:48 pm to
quote:

Yep. I remember thinking "ah we're fine they never get it right the first forecast"....and then a Cat5 Michael went over our house just as they predicted.


The problem they had with Michael was the intensity. 5 days out they had it as a moderate Cat1 at most.
Posted by friendlyobservation
Member since Mar 2024
5137 posts
Posted on 9/22/24 at 11:55 pm to
I don't know much about anything but that path looks really bad for Florida because it doesn't seem to have much slowing it down for development and it misses every land interaction possible.
Posted by friendlyobservation
Member since Mar 2024
5137 posts
Posted on 9/23/24 at 12:18 am to


what is this up by alaska?


GFS has a doomcane wiping alaska off the map.
This post was edited on 9/23/24 at 12:21 am
Posted by NorthEndZone
Member since Dec 2008
14281 posts
Posted on 9/23/24 at 12:48 am to
The 00Z Hurricane models are going nuts.

HAFS-B has a 913 MB 139 knot hurricane obliterating Apalachicola.
HAFS-A has a Michael II scenario of 926 MB and 124 knots at Cape San Blas.
HMON has a nearly worst case for Tampa St. Pete with 909 MB and 124 knots near Hernando Beach with a massive surge into Tampa Bay.
HWRF is still running but looks similar.

Hopefully the models are overdoing things, but those are possibilities.
Posted by lsuman25
Erwinville
Member since Aug 2013
43295 posts
Posted on 9/23/24 at 12:50 am to
HWRF down to 938 right after it enters the Gulf
Posted by lsuman25
Erwinville
Member since Aug 2013
43295 posts
Posted on 9/23/24 at 12:52 am to
1. Northwestern Caribbean Sea and Gulf of Mexico (AL97):
Showers and thunderstorms are beginning to show signs of
organization with a broad area of low pressure located over the
northwestern Caribbean Sea. Environmental conditions appear
favorable for further development of this system, and a tropical
depression or storm is likely to form over the next couple of days
as the system moves northward across the northwestern Caribbean Sea
and into the southeastern Gulf of Mexico where additional
development is possible.

Regardless of development, this system is expected to produce heavy
rains over portions of Central America during the next several days.
Interests in the northwestern Caribbean, the Yucatan Peninsula of
Mexico, and western Cuba should closely monitor the progress of this
system. Later this week, the system is forecast to move generally
northward across the eastern Gulf of Mexico, and interests along the
northern and northeastern Gulf Coast should also closely monitor
the progress of this system.
* Formation chance through 48 hours...high...70 percent.
* Formation chance through 7 days...high...90 percent.
Posted by BregmansWheelbarrow
Member since Mar 2020
3255 posts
Posted on 9/23/24 at 2:30 am to
They have arctic hurricanes up there all the time. That’s not even a bad one.
Posted by tide06
Member since Oct 2011
23301 posts
Posted on 9/23/24 at 3:40 am to
quote:

The 00Z Hurricane models are going nuts.

They’re making the GFS look conservative and they’re all looking at Thursday landfalls now.

The shite is going to absolutely hit the fan tomorrow. I don’t envy the disaster planning teams in FL right now.
This post was edited on 9/23/24 at 3:44 am
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