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Hurricane Irma - Spinning Down

Posted on 8/30/17 at 2:02 pm
Posted by rds dc
Member since Jun 2008
19846 posts
Posted on 8/30/17 at 2:02 pm


9.5.17 Cat 5

This post was edited on 9/12/17 at 7:26 am
Posted by Chad504boy
4 posts
Member since Feb 2005
167093 posts
Posted on 8/30/17 at 2:03 pm to
(no message)
This post was edited on 9/8/17 at 8:00 pm
Posted by Dire Wolf
bawcomville
Member since Sep 2008
36831 posts
Posted on 8/30/17 at 2:04 pm to
I know a lot of people are tired of peej prediction meme but just to be safe, he needs to stay the frick out of this thread
Posted by slackster
Houston
Member since Mar 2009
85487 posts
Posted on 8/30/17 at 2:05 pm to
Euro is concerning, to say the least...



Still 10 days out, so take it with a grain of salt. Good news is it keeps the gulf low in the Bay of Campeche and appears to send it into Mexico at the end of the run.

ETA- 12z GFS run @ 240 hours:

This post was edited on 8/30/17 at 2:07 pm
Posted by NawlinsTiger9
Where the mongooses roam
Member since Jan 2009
35048 posts
Posted on 8/30/17 at 2:06 pm to
"Irma" - classic old lady name. Scares me to death.

I'll use it in a sentence:

Irma shite myself if this storm gets into the gulf.
Posted by TDsngumbo
Alpha Silverfox
Member since Oct 2011
41906 posts
Posted on 8/30/17 at 2:06 pm to
I had an Aunt Irma. She was old, couldn't remember shite, and wore a red, curly wig. She died.
Posted by PhilipMarlowe
Member since Mar 2013
20608 posts
Posted on 8/30/17 at 2:21 pm to
(no message)
This post was edited on 9/7/17 at 9:56 pm
Posted by Duke
Twin Lakes, CO
Member since Jan 2008
35710 posts
Posted on 8/30/17 at 2:31 pm to
Based on the early model runs, the words "complex steering pattern" are going to be thrown around a lot in this thread.
Posted by heatom2
At the plant, baw.
Member since Nov 2010
12821 posts
Posted on 8/30/17 at 2:39 pm to
I know nothing is certain, but don't storms that form in this area typically curl north?
Posted by rds dc
Member since Jun 2008
19846 posts
Posted on 8/30/17 at 2:53 pm to
The models are going to struggle with 93L. Wave breaking across the North Atlantic is going to spin off some ULLs, not to different than what we saw during 92Ls trip across the Atlantic. Then there is a massive WPAC system that is going to pump a ton of energy into the high latitudes and that always gives the models fits. As that energy is distributed to the downstream waves it will determine the large scale setup across America and the Atlantic as 93L approaches. Stronger Eastern trough and weaker Atlantic ridge closes doors to the Gulf. The reverse certainly causes concern.

Another issue, the outflow from any potential Gulf system could play a role. So, take any model solutions or speculation on what might happen based on model runs with a grain of salt.

However, climo tells us this system will have ample opportunities to curve out to sea.
Posted by TaderSalad
mudbug territory
Member since Jul 2014
24759 posts
Posted on 8/30/17 at 5:10 pm to
We need a cold front...
Posted by slackster
Houston
Member since Mar 2009
85487 posts
Posted on 8/30/17 at 5:53 pm to
18z GFS @ 240 hours



897mb would be the 5th strongest Atlantic storm on record. I don't expect a ton of accuracy this far out, but it is safe to say the models think conditions are favorable for development.
Posted by MrLarson
Member since Oct 2014
34984 posts
Posted on 8/30/17 at 10:16 pm to
This is starting to feel like an '04-'05 run
Posted by rds dc
Member since Jun 2008
19846 posts
Posted on 8/31/17 at 6:45 am to
Watch the SW turn, climo for storms that make that turn is a bit concerning. Last two Euro EPS runs:

This post was edited on 8/31/17 at 6:47 am
Posted by tke857
Member since Jan 2012
12195 posts
Posted on 8/31/17 at 8:23 am to
frick this euro

Posted by rds dc
Member since Jun 2008
19846 posts
Posted on 8/31/17 at 4:10 pm to
Don't forget Matthew from last year, Euro and EPS were Gulf bound until they weren't. Euro is currently one of the farthest west models.
Posted by rds dc
Member since Jun 2008
19846 posts
Posted on 8/31/17 at 7:26 pm to
Bit of a westward shift on the 18z GEFS, now has a member into Florida.

Posted by FCP
Delta State Univ. - Fightin' Okra
Member since Sep 2010
4815 posts
Posted on 8/31/17 at 7:59 pm to
Found this nugget from earlier today by Dr. Jeff Masters on WunderGround:
quote:


quote:

To get a better sense of where Irma might go, it is often helpful to look at the ensemble forecasts from the European and GFS models. These forecasts take the operational high-resolution version of the models and impose slight variations in the initial atmospheric conditions, to simulate an ensemble of potential outcomes. They are run at lower resolution, so individual ensemble members are likely to be less reliable than the operational version. The GFS model runs 20 different ensemble forecasts, and the European model runs 50. One tool that I have found valuable is to look at the “high probability cluster” of the European model—the four ensemble members that have done the best job tracking Irma over the past day. Looking at Figure 2, the high probability cluster predicts that the Caribbean and U.S. Gulf Coast might be the most at-risk areas for a landfall by Irma.


Posted by NorthEndZone
Member since Dec 2008
11599 posts
Posted on 8/31/17 at 8:08 pm to
When we are all evacuating in 9 or 10 days, just remember it all started on page 15 at 7:34 pm on August 31st.
Posted by hg
Member since Jun 2009
123866 posts
Posted on 8/31/17 at 9:40 pm to
Holy frick, this thing already has an eye being that far out?
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