ATL: Tropical Depression Dolly

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Matt-hurricanewatcher

Re: ATL: H Dolly in Western Gulf of Mexico

#7101 Postby Matt-hurricanewatcher » Wed Jul 23, 2008 1:38 am

Based on recon the low level cirulation is becoming inline with the mid level cir/eye feature. I think mid level shear has finally droped low enough to allow for this to go to town. The reds are also starting to wrap, now all we look for is for the eye to tighten and clear out.
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Re: ATL: H Dolly in Western Gulf of Mexico

#7102 Postby Pebbles » Wed Jul 23, 2008 1:42 am

wxmann_91 wrote:if this rides up the coast to Kenedy County, it would be a good thing b/c Kenedy County is very sparsely populated.


Are you saying my dirty little secret isn't so dirty? And here I was trying to exciting for once! On a side note that's good to know. Don't know well how the population density is set up along the TX coast.
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Re: ATL: H Dolly in Western Gulf of Mexico

#7103 Postby jconsor » Wed Jul 23, 2008 1:44 am

Hi there. I a meteorologist living on the other side of the world from the US (and far from any tropical activity, to my chagrin), but some of my work relates to hurricanes and typhoons, so I keep a close eye on the tropics.

The two vortex messages from the recon aircraft (23Z and 4Z) gives a motion of 307 degrees (northwest) at 8 mph. (Here is a good site for calculating distance and bearing between two points: http://www.fcc.gov/fcc-bin/distance). Extrapolation using this motion gives a landfall at 25.9N 97.15W, or about 6 miles south of the US-Mexico border.
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Re: ATL: H Dolly in Western Gulf of Mexico

#7104 Postby RL3AO » Wed Jul 23, 2008 1:46 am

jconsor wrote:Hi there. I a meteorologist living on the other side of the world from the US (and far from any tropical activity, to my chagrin), but some of my work relates to hurricanes and typhoons, so I keep a close eye on the tropics.

The two vortex messages from the recon aircraft (23Z and 4Z) gives a motion of 307 degrees (northwest) at 8 mph. (Here is a good site for calculating distance and bearing between two points: http://www.fcc.gov/fcc-bin/distance). Extrapolation using this motion gives a landfall at 25.9N 97.15W, or about 6 miles south of the US-Mexico border.


If you want, you can contact a moderator and maybe get the fancy "pro met" avatar.
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Re: ATL: H Dolly in Western Gulf of Mexico

#7105 Postby Aric Dunn » Wed Jul 23, 2008 1:46 am

jconsor wrote:Hi there. I a meteorologist living on the other side of the world from the US (and far from any tropical activity, to my chagrin), but some of my work relates to hurricanes and typhoons, so I keep a close eye on the tropics.

The two vortex messages from the recon aircraft (23Z and 4Z) gives a motion of 307 degrees (northwest) at 8 mph. (Here is a good site for calculating distance and bearing between two points: http://www.fcc.gov/fcc-bin/distance). Extrapolation using this motion gives a landfall at 25.9N 97.15W, or about 6 miles south of the US-Mexico border.


thats cool thanks :)
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Re: ATL: H Dolly in Western Gulf of Mexico

#7106 Postby Pebbles » Wed Jul 23, 2008 1:47 am

Welcome Jconsor! Thanks for the info.. And yeah get yourself one of them fancy met siggies :)
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#7107 Postby funster » Wed Jul 23, 2008 1:52 am

Just south of the border if probably the worst spot for residents of Brownsville, Texas. They will get the worst Dolly has to offer if this is what happens.
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#7108 Postby Pebbles » Wed Jul 23, 2008 1:54 am

Pressure down to 980 according to the recon thread
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#7109 Postby RL3AO » Wed Jul 23, 2008 1:54 am

New VDM gives us a movement of 320.
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#7110 Postby Honeyko » Wed Jul 23, 2008 1:54 am

To state the obvious, those shantytowns on the Mexican side of the border are not "up to code", and therefore extremely vulnerable to TS, let alone hurricane winds.

Given that Dolly's leading eyewall will arrive near diurnal maxima as an intensifying storm, I'd bet that her 850mb winds will mix down to the surface in peak gusts (and those, of course, will do the majority of the damage versus the "official" surface MSW winds).
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Re: ATL: H Dolly in Western Gulf of Mexico

#7111 Postby Matt-hurricanewatcher » Wed Jul 23, 2008 1:59 am

http://www.ssd.noaa.gov/goes/flt/t2/avn.jpg

Complete red ring has developed, expect the eye to start to clear up over the next few hours. I'm tired but will stay up because I expect things to get very interesting later this morning.
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#7112 Postby RL3AO » Wed Jul 23, 2008 2:00 am

New dropsonde.

Surface (985mb) : 71kt
976mb: 77
967mb: 75
957mb: 81
910mb: 73
867mb: 72
850mb: 76
698mb: 73
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Re: ATL: H Dolly in Western Gulf of Mexico

#7113 Postby Hurricaneman13 » Wed Jul 23, 2008 2:01 am

I think the system got a little bit stronger now. It's probably nearing Cat 2.
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Re: ATL: H Dolly in Western Gulf of Mexico

#7114 Postby Thunder44 » Wed Jul 23, 2008 2:01 am

Dvorak says Dolly is a Cat 2:

23/0545 UTC 25.4N 96.2W T5.0/5.0 DOLLY

But Recon says no, so far.
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Re: ATL: H Dolly in Western Gulf of Mexico

#7115 Postby cheezyWXguy » Wed Jul 23, 2008 2:06 am

Thunder44 wrote:Dvorak says Dolly is a Cat 2:

23/0545 UTC 25.4N 96.2W T5.0/5.0 DOLLY

But Recon says no, so far.

it might..dropsonde in sw quad. And btw matt, it is in the final stages of clearing out it appears...on visible the a clouded eye is showing through.
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Re: ATL: H Dolly in Western Gulf of Mexico

#7116 Postby HarlequinBoy » Wed Jul 23, 2008 2:08 am

cheezyWXguy wrote:
Thunder44 wrote:Dvorak says Dolly is a Cat 2:

23/0545 UTC 25.4N 96.2W T5.0/5.0 DOLLY

But Recon says no, so far.

it might..dropsonde in sw quad. And btw matt, it is in the final stages of clearing out it appears...on visible the a clouded eye is showing through.


Yeah it is, and on IR there's red ring around it. Dolly is a pretty classy looking hurricane on radar as well.

Brownsville is reporting heavy rain now and winds still well below TS strength.
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Re: ATL: H Dolly in Western Gulf of Mexico

#7117 Postby Normandy » Wed Jul 23, 2008 2:10 am

Just got back from a meeting...

Must say Dolly continues to impress, and I now see no reason why this won't approach major hurricane status....Classic classic radar appearance that keeps getting better, as well as very deep convection surrounding the now ragged eye. i would expect that eye to begin and clear out fairly soon, and Dolly could see significant pressure drops. I would estimate a landfall pressure somewhere in the mid to low 960s.
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Re: ATL: H Dolly in Western Gulf of Mexico

#7118 Postby paintplaye » Wed Jul 23, 2008 2:11 am

It looks like Galveston is starting to get some rain. Good news for people who need some rain to get the grass wet.
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#7119 Postby Cyclenall » Wed Jul 23, 2008 2:16 am

I agree about the red ring on AVN images showing that maybe Dolly will finally open her eye once and for all.
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Re: ATL: H Dolly in Western Gulf of Mexico

#7120 Postby PTrackerLA » Wed Jul 23, 2008 2:19 am

Dolly's looking pretty wicked on the IR-2 loop now. I think this could be 95mph-100mph at landfall given the current slow movement.

http://www.ssd.noaa.gov/goes/flt/t2/loop-ir2.html
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