ATL: TROPICAL DEPRESSION ANA (02L)

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Re: ATL : TROPICAL DEPRESSION TWO

#1101 Postby Air Force Met » Fri Aug 14, 2009 9:54 pm

tolakram wrote:Did someone respond to a troll?

As far as those outflow boundaries ... I really am not qualified to tell, but what is racing away from the convection to the west and south near the end of this loop? Just normal pulsing?

http://www.ssd.noaa.gov/goes/flt/t1/flash-ir2.html


Looks like a feeder band firing under neath some cirrus. Compare to the ch.4 IR and you'll see the cirrus moving out and dissipating.
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Derek Ortt

#1102 Postby Derek Ortt » Fri Aug 14, 2009 9:55 pm

we may need to change the title back, since there has not been an advisory yet
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Re: ATL : TROPICAL DEPRESSION TWO

#1103 Postby MusicCityMan » Fri Aug 14, 2009 9:55 pm

Maybe they'll wait till morning for un upgrade?
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Re: ATL : EX TROPICAL DEPRESSION TWO

#1104 Postby artist » Fri Aug 14, 2009 9:56 pm

MWatkins wrote:Couple of things to remember...

For a significant hurricane to impact South Florida from the east a bunch of things have to happen in sequence.

First, whatever comes up out of the Caribbean will need to contend with the Greater Antilles...and eastern Cuba, Haiti and even Puerto Rico have lots of tall mountains. These tend to be very distuptive even if a storm doesn't pass directly over them.

Second, the guidance envelope has been shifting southward run after run. Although it is totally possible that TD2 will track along the guidance, it's more important to watch the trends. If the continue to show this track, that's a concern. However, if the ridge builds in as strongly as forecast there's a chance whatever develops (and there is not much model support for a strong system right now outside of SHIPS) could miss to the south.

At this time, I think it's important to do everything you should have done on June 1st no matter where you live (Luis should watch a little more closely). Get the supplies, window protection etc and just have it ready, and watch and wait over the weekend.

One thing you can do to make yourself feel like you are preparing is make a lot of ice. You can never have too much ice on hand if the power goes out! It's invaluable!

MW

nice to see you Mike. When do you think we will have a better picture of where this might go?
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Re: ATL : TROPICAL DEPRESSION TWO

#1105 Postby tolakram » Fri Aug 14, 2009 9:56 pm

Air Force Met wrote:
tolakram wrote:
As far as those outflow boundaries ... I really am not qualified to tell, but what is racing away from the convection to the west and south near the end of this loop? Just normal pulsing?

http://www.ssd.noaa.gov/goes/flt/t1/flash-ir2.html


Looks like a feeder band firing under neath some cirrus. Compare to the ch.4 IR and you'll see the cirrus moving out and dissipating.


Thanks AFM, much appreciated.
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Re: ATL : TROPICAL DEPRESSION TWO

#1106 Postby wxman57 » Fri Aug 14, 2009 9:56 pm

MusicCityMan wrote:Maybe they'll wait till morning for un upgrade?


I don't see any reason why they'd wait now. Closed low with significant convection developing over the center. It's a TD.
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#1107 Postby Evil Jeremy » Fri Aug 14, 2009 9:58 pm

wxman, do you know when is the latest the NHC has issued an advisory from the time it was supposed to be issued?
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#1108 Postby Derek Ortt » Fri Aug 14, 2009 9:59 pm

maybe because the global models dissipate this system shortly they are not restarting advisories. I am not entirely sure.

It still has some inflow issues
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Re: ATL : TROPICAL DEPRESSION TWO

#1109 Postby Stormsfury » Fri Aug 14, 2009 10:00 pm

Guidance message init as a 30 MPH Tropical Cyclone 2 with 1007 central pressure

WHXX01 KWBC 150145
CHGHUR
TROPICAL CYCLONE GUIDANCE MESSAGE
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0145 UTC SAT AUG 15 2009

DISCLAIMER...NUMERICAL MODELS ARE SUBJECT TO LARGE ERRORS.
PLEASE REFER TO NHC OFFICIAL FORECASTS FOR TROPICAL CYCLONE
AND SUBTROPICAL CYCLONE INFORMATION.

ATLANTIC OBJECTIVE AIDS FOR

TROPICAL CYCLONE TWO (AL022009) 20090815 0000 UTC

...00 HRS... ...12 HRS... ...24 HRS. .. ...36 HRS...
090815 0000 090815 1200 090816 0000 090816 1200

LAT LON LAT LON LAT LON LAT LON
BAMS 14.5N 44.8W 14.9N 46.9W 15.9N 49.8W 17.5N 53.9W
BAMD 14.5N 44.8W 15.3N 47.1W 16.4N 49.8W 17.6N 53.0W
BAMM 14.5N 44.8W 15.0N 47.0W 15.9N 49.6W 16.8N 53.1W
LBAR 14.5N 44.8W 15.0N 47.5W 15.8N 50.5W 16.7N 54.0W
SHIP 25KTS 28KTS 32KTS 36KTS
DSHP 25KTS 28KTS 32KTS 36KTS

...48 HRS... ...72 HRS... ...96 HRS. .. ..120 HRS...
090817 0000 090818 0000 090819 0000 090820 0000

LAT LON LAT LON LAT LON LAT LON
BAMS 19.4N 58.2W 23.2N 66.9W 26.7N 73.0W 28.9N 75.6W
BAMD 18.8N 56.5W 21.0N 63.9W 23.5N 70.0W 24.9N 73.6W
BAMM 17.8N 56.9W 19.9N 65.1W 22.2N 72.5W 24.0N 77.7W
LBAR 17.7N 57.7W 20.2N 65.5W .0N .0W .0N .0W
SHIP 41KTS 50KTS 54KTS 59KTS
DSHP 41KTS 50KTS 54KTS 59KTS

...INITIAL CONDITIONS...
LATCUR = 14.5N LONCUR = 44.8W DIRCUR = 270DEG SPDCUR = 14KT
LATM12 = 14.6N LONM12 = 41.7W DIRM12 = 276DEG SPDM12 = 15KT
LATM24 = 14.3N LONM24 = 39.2W
WNDCUR = 25KT RMAXWD = 40NM WNDM12 = 25KT
CENPRS = 1007MB OUTPRS = 1010MB OUTRAD = 150NM SDEPTH = M
RD34NE = 0NM RD34SE = 0NM RD34SW = 0NM RD34NW = 0NM

$$
NNNN
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Re: ATL : TROPICAL DEPRESSION TWO

#1110 Postby sevenleft » Fri Aug 14, 2009 10:00 pm

wxman57 wrote:
MusicCityMan wrote:Maybe they'll wait till morning for un upgrade?


I don't see any reason why they'd wait now. Closed low with significant convection developing over the center. It's a TD.

I'd find it odd if they wouldn't publish an advisory now, given that they classified it as a TD in best track about two hours ago and the appearance hasn't changed since.
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Re:

#1111 Postby wxman57 » Fri Aug 14, 2009 10:00 pm

Derek Ortt wrote:maybe because the global models dissipate this system shortly they are not restarting advisories. I am not entirely sure.

It still has some inflow issues


Call over there and ask Lix what's going on. ;-)
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Re: ATL : TROPICAL DEPRESSION TWO

#1112 Postby Air Force Met » Fri Aug 14, 2009 10:01 pm

wxman57 wrote:
MusicCityMan wrote:Maybe they'll wait till morning for un upgrade?


I don't see any reason why they'd wait now. Closed low with significant convection developing over the center. It's a TD.


Yeah...if this was sitting 100 miles off of GLS or MIA...it would have been upgraded this morning. Its a TD by any definition.

Oh wait...just saw that Avila put out the TWO...that explains it. lol.
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#1113 Postby MusicCityMan » Fri Aug 14, 2009 10:02 pm

We got 2 pick on Avila don't we lol :wink:
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Re: Re:

#1114 Postby Derek Ortt » Fri Aug 14, 2009 10:02 pm

wxman57 wrote:
Derek Ortt wrote:maybe because the global models dissipate this system shortly they are not restarting advisories. I am not entirely sure.

It still has some inflow issues


Call over there and ask Lix what's going on. ;-)


I'm more worried so I can get some dinner... havn't had my dinner yet

good thing I'm getting up at 4:30 anyways to check on models
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#1115 Postby Derek Ortt » Fri Aug 14, 2009 10:03 pm

Please change the title back to what it was. It is becoming more and more likely that advisories are not being re-issued
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Re:

#1116 Postby Air Force Met » Fri Aug 14, 2009 10:03 pm

MusicCityMan wrote:We got 2 pick on Avila don't we lol :wink:


He sitting at the NHC right now....praying... and waiting on the next image to come in...hoping for a convective collapse.
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Re: ATL : TROPICAL DEPRESSION TWO

#1117 Postby Thunder44 » Fri Aug 14, 2009 10:03 pm

I figure they start writing these advisories well ahead of time. So maybe a last minute change to upgrade to a TS.
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Re: ATL : TROPICAL DEPRESSION TWO

#1118 Postby HouTXmetro » Fri Aug 14, 2009 10:04 pm

I guess they are not impressed.
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Re: ATL : TROPICAL DEPRESSION TWO

#1119 Postby wxman57 » Fri Aug 14, 2009 10:05 pm

Thunder44 wrote:I figure they start writing these advisories well ahead of time. So maybe a last minute change to upgrade to a TS.


No, no data to indicate it's a TS. Maybe he's arguing with Landsea about Dr. Mann's paper and lost track of time?
Last edited by wxman57 on Fri Aug 14, 2009 10:06 pm, edited 1 time in total.
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#1120 Postby MusicCityMan » Fri Aug 14, 2009 10:05 pm

Come on Avila, you're costing some of us our dinners n late nite snacks here..
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