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re: Hurricane Irma - Spinning Down

Posted on 9/4/17 at 2:01 am to
Posted by slackster
Houston
Member since Mar 2009
91836 posts
Posted on 9/4/17 at 2:01 am to
quote:

looks really similar to the gfs without the nonsense pressures




Also initializes at 982 though, so who knows.
Posted by baytiger
Boston
Member since Dec 2007
46978 posts
Posted on 9/4/17 at 2:04 am to
I'm not a huge fan of this run for a few reasons. it starts out by initializing incorrectly and then the storm outruns the ridge but still makes a north turn for some reason. if the upper level scenario in this run plays out, it looks a lot more like a gulf storm than a hard north turn.

regardless it's just one model run and still too far out to make a real forecast
Posted by slackster
Houston
Member since Mar 2009
91836 posts
Posted on 9/4/17 at 2:05 am to
quote:

baytiger



If you don't mind, how/why does Irma head due north given this set up?





Wouldn't the flow from the high pressure to the north want to steer her westward?
Posted by blight
central
Member since Jul 2012
1036 posts
Posted on 9/4/17 at 2:06 am to
ok. on the tropical tidbits site, which is the actual european model?

ecmwf, gfs, cmc, navgem, jma, or gfs?
Posted by rt3
now in the piney woods of Pineville
Member since Apr 2011
147069 posts
Posted on 9/4/17 at 2:06 am to
so this Euro has landfalls in Cuba, Florida, Bahamas & then South Carolina
This post was edited on 9/4/17 at 2:07 am
Posted by rt3
now in the piney woods of Pineville
Member since Apr 2011
147069 posts
Posted on 9/4/17 at 2:06 am to
quote:

ok. on the tropical tidbits site, which is the actual european model?

ecmwf, gfs, cmc, navgem, jma, or gfs?

ECMWF is the Euro
Posted by jaTigerfan
Nashville
Member since Oct 2011
2180 posts
Posted on 9/4/17 at 2:07 am to
quote:

ecmwf
Posted by blight
central
Member since Jul 2012
1036 posts
Posted on 9/4/17 at 2:08 am to
ok thank you
Posted by rt3
now in the piney woods of Pineville
Member since Apr 2011
147069 posts
Posted on 9/4/17 at 2:09 am to
Posted by iliveinabox
in a box
Member since Aug 2011
24145 posts
Posted on 9/4/17 at 2:18 am to
Meh
Posted by AU24
Toomers Corner
Member since Dec 2014
4523 posts
Posted on 9/4/17 at 2:36 am to
Posted by Jim Rockford
Member since May 2011
105178 posts
Posted on 9/4/17 at 2:45 am to
One of the pros on Storm2k says the north term is dependent on a spurious low that wont verify. If true, hello GOM.
Posted by slackster
Houston
Member since Mar 2009
91836 posts
Posted on 9/4/17 at 2:52 am to
quote:

One of the pros on Storm2k says the north term is dependent on a spurious low that wont verify. If true, hello GOM.




No pro is going to say a low will/won't be anywhere 5-6 days out. At least no pro should do that kind of thing.
Posted by AU24
Toomers Corner
Member since Dec 2014
4523 posts
Posted on 9/4/17 at 2:53 am to
quote:

One of the pros on Storm2k says the north term is dependent on a spurious low that wont verify. If true, hello GOM.


EPS

This post was edited on 9/4/17 at 2:58 am
Posted by baytiger
Boston
Member since Dec 2007
46978 posts
Posted on 9/4/17 at 2:57 am to
it's a 500 mb vorticity maximum that is trying to do a pseudo fujiwhara to slingshot the storm north. it doesn't seem like a strong enough feature to steer the storm like the model is suggesting.

This post was edited on 9/4/17 at 3:25 am
Posted by TigerStripes06
SWLA
Member since Sep 2006
30032 posts
Posted on 9/4/17 at 2:58 am to
Well, yeah. It will or it won't
Posted by TigerStripes06
SWLA
Member since Sep 2006
30032 posts
Posted on 9/4/17 at 3:06 am to
Another one for you...if Irma catches the end of florida with enough of itself, on its current track, could it have the same effect and whip it up the western coast?
This post was edited on 9/4/17 at 3:07 am
Posted by baytiger
Boston
Member since Dec 2007
46978 posts
Posted on 9/4/17 at 3:09 am to
not sure what you're asking. hurricanes don't generally steer themselves

Posted by slackster
Houston
Member since Mar 2009
91836 posts
Posted on 9/4/17 at 3:13 am to
quote:

Another one for you...if Irma catches the end of florida with enough of itself, on its current track, could it have the same effect and whip it up the western coast?


The "drag" created by land doesn't steer the storm. It's not like the northern part of the storm will slow down and the souther part will speed up to make up for it, causing a northward turn on a previous westerly track.
Posted by TigerStripes06
SWLA
Member since Sep 2006
30032 posts
Posted on 9/4/17 at 3:17 am to
That's what I meant. I didn't really mean speed up on one end so much as I meant the drag effect. I remember when Andrew crossed Florida, it hit it head on and kept going...just didn't know if it had been more than of a glancing blow if it would have effected the course at all.
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