Global model runs discussion

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ninel conde

Re:

#5941 Postby ninel conde » Thu Aug 22, 2013 7:34 am

Ntxw wrote:Most guidance have converged that the MJO will slowly move through the EPAC the rest of this month. Euro, GFS, and Ukmet pretty much agrees on phase 8, beyond that (Sept) is where they now diverge. Some keep it going some weaken it into the circle. For the most part if there is enhanced MJO activity it will most likely be confined to the EPAC for the next 5-7 days.



one negative with the MJO over the east pac is increased convection there=more shear over the atlantic basin. it wont be surprising to see the MJO collapse.
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Re:

#5942 Postby gatorcane » Thu Aug 22, 2013 7:47 am

northjaxpro wrote:The Atlantic basin is just plain dead right now. It is truly fascinating just how quiet the basin is currently in late August going into September.


Yeah it is truly fascinating especially when the ECMWF and last two runs of the GFS basically show nothing through 240 hours and 384 hours respectively (through Sept 7th). The GFS keeps hinting at Cape Verde development in the long range but keeps pushing back development which is indicating basically nothing on the horizon.
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#5943 Postby Stormcenter » Thu Aug 22, 2013 8:14 am

Need to look closer to home(US)for any future development. IMO
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Re: Global Model Runs Discussion

#5944 Postby blp » Thu Aug 22, 2013 9:41 am

gatorcane wrote:
northjaxpro wrote:The Atlantic basin is just plain dead right now. It is truly fascinating just how quiet the basin is currently in late August going into September.


Yeah it is truly fascinating especially when the ECMWF and last two runs of the GFS basically show nothing through 240 hours and 384 hours respectively (through Sept 7th). The GFS keeps hinting at Cape Verde development in the long range but keeps pushing back development which is indicating basically nothing on the horizon.


What is interesting is that even with the mjo pulse right now at the doorstep of our basin and all the major models showing a strong pulse in our basin for the next 15-20 days and yet there is no significant change in activity in the 10 day forecast on any of the models. I am wondering if the MJO forecasts might be wrong again and the pulse collapses again or stalls out as it did earlier in the year. The MJO forecasts have not had a good track record this year.

I can't remember a situation where we had a strong MJO pulse projected during the peak of Hurricane season and the models not jumping all over that situation. Really strange....
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Re: Global Model Runs Discussion

#5945 Postby Steve » Thu Aug 22, 2013 9:56 am

What is interesting is that even with the mjo pulse right now at the doorstep of our basin and all the major models showing a strong pulse in our basin for the next 15-20 days and yet there is no significant change in activity in the 10 day forecast on any of the models. I am wondering if the MJO forecasts might be wrong again and the pulse collapses again or stalls out as it did earlier in the year. The MJO forecasts have not had a good track record this year.

That well may be because there isn't very much out there that would traditionally be something they'd latch onto for development. You have a couple of waves across the Caribbean, Atlantic and Africa, but not many. And if you look to the Indian Ocean (see link below), there really isn't much there at all with the exception of clouds streaming across. I don't have any data on this, but maybe there is less monsoonal moisture or maybe the stream is too fast and not allowing for typically stronger pulses we'd expect to see this time of year.

http://www.usno.navy.mil/NOOC/nmfc-ph/R ... iosair.jpg

Personally, I'm not slamming the lid on the season as some posters have been trying to do. It's almost agenda driven, and that seems to happen every year (not referring to you blp). You get some posters who will argue and argue and argue and make it their mission that the season is over before it starts only to see them vanish by early September. Sometimes it goes the other way where people just argue and argue on how hyper a season is going to be only to fade away after nothing happens. I said it a few weeks ago, but this is a bad setup year for the SE US. I fully expect 3 landfalls (of whatever) between MS and NC with other potential hits as outlined then (East Canada/Bermuda and possibly South Texas/Northern Mexico). It's all there and can be reviewed in November to see if I interpreted some of the signals. I'm not trying to be 'right' and don't have an agenda to defend. The setup is simply bad news for later if anything materializes. If not, good for us. We could probably use a break from so many multi-billion dollar hurricane disasters over the last 9 years or so.

Steve
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Re: Global Model Runs Discussion

#5946 Postby tolakram » Thu Aug 22, 2013 10:01 am

The various threads are getting kind of chaotic and crossed with chatter, so I'll use Steve as an example. I like the first part of the post as it's model related, but the second part is more for a thread like this one: viewtopic.php?f=31&t=115308

Let's stick to model discussions in here, and leave commentary for the other thread please.
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#5947 Postby Hammy » Thu Aug 22, 2013 11:44 am

latest GFS delayed development again now from Aug 30 to Sep 2...
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Re:

#5948 Postby ROCK » Thu Aug 22, 2013 11:45 am

Hammy wrote:latest GFS delayed development again now from Aug 30 to Sep 2...



its not a delay if you are looking past 200+ hrs.. :wink:
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Re: Global Model Runs Discussion

#5949 Postby supercane4867 » Thu Aug 22, 2013 12:38 pm

Last edited by tolakram on Thu Aug 22, 2013 12:44 pm, edited 1 time in total.
Reason: removed direct image embed
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Re: Global Model Runs Discussion

#5950 Postby tolakram » Thu Aug 22, 2013 12:47 pm

Here's a loop of the Canadian run. Lots of action, but it's the Canadian. :)

http://www.tropicaltidbits.com/analysis/models/gem/2013082212/gem_mslp_pcpn_atltropics.html
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Re: Global Model Runs Discussion

#5951 Postby blp » Thu Aug 22, 2013 1:07 pm

The fact that the GEM is showing activity in less than 240hrs is encouraging. Yes it ramps up storm intensity too much but at least it is telling us that the evironment is getting better.
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Re: Global Model Runs Discussion

#5952 Postby ROCK » Thu Aug 22, 2013 1:10 pm

CMC is good at sniffing out TC genesis..always has been...maybe bonkers at times but it has a good nose. As does the NAVGEM.

the season is about to truly kick off...
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Re: Global Model Runs Discussion

#5953 Postby SouthFloridian92 » Thu Aug 22, 2013 1:14 pm

:uarrow: Don't say it too soon. You might jinx it.
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#5954 Postby alienstorm » Thu Aug 22, 2013 1:42 pm

Again folks the Atlantic is to hostile for development. I doubt if we see another MDR storm - there may development near home but I don't see anything developing east of 50W.
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Re: Global Model Runs Discussion

#5955 Postby tolakram » Thu Aug 22, 2013 2:30 pm

12Z euro has nothing. :)
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Re: Global Model Runs Discussion

#5956 Postby HURRICANELONNY » Thu Aug 22, 2013 3:46 pm

Didn't the globals show nothing when the storms did form? The CMC might be sniffing something out. Wasn't that model upgraded. 8-)
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Re: Global Model Runs Discussion

#5957 Postby ROCK » Thu Aug 22, 2013 4:13 pm

HURRICANELONNY wrote:Didn't the globals show nothing when the storms did form? The CMC might be sniffing something out. Wasn't that model upgraded. 8-)



yep...GFS and EURO have been horrid in ATL TC genesis this year. CMC and the NAVGEM are seeing something....

might not be a closed low but that carib blob was exactly what the NAVGEM was hinting at....now we see if it can consolidate and move into the BOC.
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#5958 Postby Stormcenter » Thu Aug 22, 2013 4:15 pm

Just making an observation and asking a question here. I'm not comparing to the 2005 season or Katrina. Anyway did any of the models forsee her development in 2005? I honestly don't recall that any did. Jus
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Re:

#5959 Postby Bocadude85 » Thu Aug 22, 2013 4:17 pm

Hammy wrote:latest GFS delayed development again now from Aug 30 to Sep 2...



N/T
Last edited by Bocadude85 on Thu Aug 22, 2013 5:09 pm, edited 1 time in total.
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Re: Re:

#5960 Postby northtxboy » Thu Aug 22, 2013 4:18 pm

Bocadude85 wrote:
Hammy wrote:latest GFS delayed development again now from Aug 30 to Sep 2...



The 12z GFS has a system developing in just 4 days....



Show us
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