ATL: IRENE - Models

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Re: Re:

#3661 Postby Aric Dunn » Mon Aug 22, 2011 3:33 pm

linkerweather wrote:
Aric Dunn wrote:They will probably shift it a little east but be well west of the consensus. most likely awaiting the upper air data for the 00z.


for what its worth.. the NAM is showing the trough lifting a little faster in the next 24 to 36 hours ... could be something to watch ..


Very interesting, the NAM indicates the ridge forcing Irene west for about 24 hours before a subtle NW turn...

As an aside, the EURO ensembles are all over the place with many differing solutions. Having some more solid upper air data chunked into many model runs over the next 24 hours would be very helpful.


lets not all forget this tid bit from this mornings discussion ...


"WHAT IS NOTEWORTHY IS
THAT ALL OF THE GLOBAL AND REGIONAL MODELS AGREE THAT THE OUTFLOW
OF IRENE WILL CONVERGE WITH WESTERLY TO NORTHWESTERLY UPPER-LEVEL
MID-LATITUDE FLOW OVER THE MID-ATLANTIC STATES BY 96 HOURS AND
BEYOND. THIS UPPER-LEVEL MASS CONFLUENCE COULD MAINTAIN THE MID- TO
LOW-LEVEL RIDGE A LITTLE BIT STRONGER AND LONGER THAN WHAT NOGAPS
AND THE ECMWF ARE FORECASTING...WHICH WOULD IN TURN KEEP IRENE A
LITTLE CLOSER TO THE FLORIDA EAST COAST."


I think the models do not know how to handle such a thing. and maybe to quick to turn.
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Re: ATL: IRENE - Models

#3662 Postby MWatkins » Mon Aug 22, 2011 3:33 pm

I believe the special 18Z soundings made it into the initialization for the NAM, GFS and other models. Wonder what influence, if any, this will have on the 18Z guidance.

Either way, can't wait to see the impact from the environmental mission...

MW
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Re: ATL: IRENE - Models

#3663 Postby Aric Dunn » Mon Aug 22, 2011 3:36 pm

MWatkins wrote:I believe the special 18Z soundings made it into the initialization for the NAM, GFS and other models. Wonder what influence, if any, this will have on the 18Z guidance.

Either way, can't wait to see the impact from the environmental mission...

MW


NAM is way farther west and south

guess more appropriate would be Slower.. lol
Last edited by Aric Dunn on Mon Aug 22, 2011 3:37 pm, edited 1 time in total.
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Re: ATL: IRENE - Models

#3664 Postby DESTRUCTION5 » Mon Aug 22, 2011 3:36 pm

MWatkins wrote:I believe the special 18Z soundings made it into the initialization for the NAM, GFS and other models. Wonder what influence, if any, this will have on the 18Z guidance.

Either way, can't wait to see the impact from the environmental mission...

MW


Is that confirmed somewhere Mike?
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Re: ATL: IRENE - Models

#3665 Postby Lowpressure » Mon Aug 22, 2011 3:37 pm

Aric Dunn wrote:
MWatkins wrote:I believe the special 18Z soundings made it into the initialization for the NAM, GFS and other models. Wonder what influence, if any, this will have on the 18Z guidance.

Either way, can't wait to see the impact from the environmental mission...

MW


NAM is way farther west and south

NAM seems way out of bounds to me.
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Re: ATL: IRENE - Models

#3666 Postby fci » Mon Aug 22, 2011 3:39 pm

MWatkins wrote:I believe the special 18Z soundings made it into the initialization for the NAM, GFS and other models. Wonder what influence, if any, this will have on the 18Z guidance.

Either way, can't wait to see the impact from the environmental mission...

MW


For those of us without a "z" hand on our watches; when should we see the first model runs with the soundings in them? :double:
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Re: ATL: IRENE - Models

#3667 Postby AdamFirst » Mon Aug 22, 2011 3:40 pm

fci wrote:
MWatkins wrote:I believe the special 18Z soundings made it into the initialization for the NAM, GFS and other models. Wonder what influence, if any, this will have on the 18Z guidance.

Either way, can't wait to see the impact from the environmental mission...

MW


For those of us without a "z" hand on our watches; when should we see the first model runs with the soundings in them? :double:


18z usually means 5 or 6 PM eastern.
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Re: ATL: IRENE - Models

#3668 Postby MWatkins » Mon Aug 22, 2011 3:43 pm

Found this under the NOUS42 header (my apologies if someone posted this earlier), however I haven't found initialization notes for the 18Z NAM

SENIOR DUTY METEOROLOGIST NWS ADMINISTRATIVE MESSAGE
NWS NCEP CENTRAL OPERATIONS CAMP SPRINGS MD
1340Z MON AUG 22 2011

[EDITED]

THE NATIONAL HURRICANE CENTER IS REQUESTING SPECIAL 6-HOURLY UPPER
AIR RELEASES BEGINNING AT 18Z TODAY FROM THE FOLLOWING STATIONS:
KEY WEST, MIAMI, TAMPA, JACKSONVILLE, TALLAHASSEE, SLIDELL,
JACKSON, BIRMINGHAM, PEACHTREE CITY, CHARLESTON, MOREHEAD CITY,
GREENSBORO, NASHVILLE, WILMINGTON, PITTSBURGH, BLACKSBURG,
STERLING AND WALLOPS ISLAND.
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Re: ATL: IRENE - Models

#3669 Postby Rainband » Mon Aug 22, 2011 3:43 pm

FWIW one thing the tropics has taught me your not in the clear until the storm makes landfall and even though I am breathing a lil sigh of relief. I won't be happy till this is way east or north of florida. :eek:
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#3670 Postby Aric Dunn » Mon Aug 22, 2011 3:45 pm

NAM is going into gullf it looks like.. ridging building in strong.

18z 72hrs

Image


12z

Image
Last edited by Aric Dunn on Mon Aug 22, 2011 3:48 pm, edited 1 time in total.
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#3671 Postby chris_fit » Mon Aug 22, 2011 3:46 pm

18z NAM @ 78hrs, fwiw


Image

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Re: ATL: IRENE - Models

#3672 Postby wjs3 » Mon Aug 22, 2011 3:47 pm

MWatkins wrote:Found this under the NOUS42 header (my apologies if someone posted this earlier), however I haven't found initialization notes for the 18Z NAM

SENIOR DUTY METEOROLOGIST NWS ADMINISTRATIVE MESSAGE
NWS NCEP CENTRAL OPERATIONS CAMP SPRINGS MD
1340Z MON AUG 22 2011

[EDITED]

THE NATIONAL HURRICANE CENTER IS REQUESTING SPECIAL 6-HOURLY UPPER
AIR RELEASES BEGINNING AT 18Z TODAY FROM THE FOLLOWING STATIONS:
KEY WEST, MIAMI, TAMPA, JACKSONVILLE, TALLAHASSEE, SLIDELL,
JACKSON, BIRMINGHAM, PEACHTREE CITY, CHARLESTON, MOREHEAD CITY,
GREENSBORO, NASHVILLE, WILMINGTON, PITTSBURGH, BLACKSBURG,
STERLING AND WALLOPS ISLAND.


Too bad they can't request Bermuda--would be good to track 500 MB heights there vs progs. Eagerly awaiting 0Z sounding from there. 500 MB was at 591 DM at 12 Z today.
Last edited by wjs3 on Mon Aug 22, 2011 4:03 pm, edited 1 time in total.
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Re: ATL: IRENE - Models

#3673 Postby robbielyn » Mon Aug 22, 2011 3:48 pm

Rainband wrote:FWIW one thing the tropics has taught me your not in the clear until the storm makes landfall and even though I am breathing a lil sigh of relief. I won't be happy till this is way east or north of florida. :eek:

Yeah charlie taught us that lol. it was so headed to tampa guaranteed no deviation whatsoever so everyone evacuates except the people that really needed to. Nexrad called it first with his ruc2 and said follow the feeder bands he did this while it was just north of cuba and before anyone else saw it. that trough turned out to be pretty powerful.
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Re: ATL: IRENE - Models

#3674 Postby jhpigott » Mon Aug 22, 2011 3:48 pm

Looks like the NAM is trending west 2 runs in a row . . . now to see if other models trend back west.
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Re: ATL: IRENE - Models

#3675 Postby fci » Mon Aug 22, 2011 3:48 pm

AdamFirst wrote:
fci wrote:
MWatkins wrote:I believe the special 18Z soundings made it into the initialization for the NAM, GFS and other models. Wonder what influence, if any, this will have on the 18Z guidance.

Either way, can't wait to see the impact from the environmental mission...

MW


For those of us without a "z" hand on our watches; when should we see the first model runs with the soundings in them? :double:


18z usually means 5 or 6 PM eastern.


Actually I think 18z is 2 PM Eastern.
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#3676 Postby Vortex » Mon Aug 22, 2011 3:49 pm

18Z NAM ridge holding tough and intensifying....


http://www.nco.ncep.noaa.gov/pmb/nwprod ... p_072l.gif
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Re:

#3677 Postby robbielyn » Mon Aug 22, 2011 3:49 pm

Aric Dunn wrote:NAM is going into gullf it looks like.. ridging building in strong.

18z 72hrs

Image


12z

Image

yeah but what about the second trough thats suppose to 'seal the deal'? the one two punch as someone else said?
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Re: ATL: IRENE - Models

#3678 Postby Evil Jeremy » Mon Aug 22, 2011 3:49 pm

MWatkins wrote:Found this under the NOUS42 header (my apologies if someone posted this earlier), however I haven't found initialization notes for the 18Z NAM

SENIOR DUTY METEOROLOGIST NWS ADMINISTRATIVE MESSAGE
NWS NCEP CENTRAL OPERATIONS CAMP SPRINGS MD
1340Z MON AUG 22 2011

[EDITED]

THE NATIONAL HURRICANE CENTER IS REQUESTING SPECIAL 6-HOURLY UPPER
AIR RELEASES BEGINNING AT 18Z TODAY FROM THE FOLLOWING STATIONS:
KEY WEST, MIAMI, TAMPA, JACKSONVILLE, TALLAHASSEE, SLIDELL,
JACKSON, BIRMINGHAM, PEACHTREE CITY, CHARLESTON, MOREHEAD CITY,
GREENSBORO, NASHVILLE, WILMINGTON, PITTSBURGH, BLACKSBURG,
STERLING AND WALLOPS ISLAND.


What type of data does this add to the models (in general or the 18z in particular) that wasn't there before? Does this mke the 18z models more special than it normally is (as an intermediate run)?
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#3679 Postby CrazyC83 » Mon Aug 22, 2011 3:49 pm

Looking at those models, looks like a track right across eastern NC before paralleling just offshore.
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Re: ATL: IRENE - Models

#3680 Postby Kory » Mon Aug 22, 2011 3:50 pm

As the models continue to shift eastward, I expect the forecast track to be shifted slightly more east. As I called it a few days ago, it is forecasted to turn north, east of Florida.
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