Is there a low level turning?

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vbhoutex
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Is there a low level turning?

#1 Postby vbhoutex » Tue Jul 03, 2007 2:24 pm

Radar seems to indicate a turning ESE of CC and I have looked at WV and this visible. Am I seeing the beginnings of a low level "swirl" ESE of CC or a "mini vortex" or am I just seeing collapsing storms and outflow bundaries? The third choice,of course, is my desire.

http://wwwghcc.msfc.nasa.gov/cgi-bin/post-goes

http://radar.weather.gov/radar.php?prod%20...%20p&loop=yes

Thanks to Jen Bayles for asking the initial question.
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#2 Postby southerngale » Tue Jul 03, 2007 2:30 pm

When I clicked on your first link, I got:

This script should be referenced with a METHOD of POST. If you don't understand this, see this forms overview.


When I clicked on the second link, I got the DFW radar.
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Re: Is there a low level turning?

#3 Postby wxman57 » Tue Jul 03, 2007 2:31 pm

We were looking at that tstm area as well. However, convection seems to be diminishing offshore and redeveloping inland, and pressures remain high along the TX coast. Possibly you're seeing a mid level vortex. These kind of complexes CAN develop into TCs (Alica, the 1943 hurricane that hit Houston, etc). Always have to watch for persistent convection offshore.
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Re: Is there a low level turning?

#4 Postby Clint_TX » Tue Jul 03, 2007 3:56 pm

Galveston discussion mentions a developing surface low.
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Re: Is there a low level turning?

#5 Postby Tampa Bay Hurricane » Tue Jul 03, 2007 3:59 pm

The convection off Texas looks pretty heavy...and if shear
stays low I would expect some slow development...
http://cimss.ssec.wisc.edu/tropic/real- ... xirg8n.GIF
Observe the large region of oval shaped convection
beginning to pull off of the Texas coast...
A surface low could form gradually...
from there I don't know...but I don't
see anything stopping a slow developmental
process.
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Re: Is there a low level turning?

#6 Postby Clint_TX » Tue Jul 03, 2007 4:00 pm

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Re: Is there a low level turning?

#7 Postby Air Force Met » Tue Jul 03, 2007 4:34 pm

vbhoutex wrote:Radar seems to indicate a turning ESE of CC and I have looked at WV and this visible. Am I seeing the beginnings of a low level "swirl" ESE of CC or a "mini vortex" or am I just seeing collapsing storms and outflow bundaries? The third choice,of course, is my desire.

http://wwwghcc.msfc.nasa.gov/cgi-bin/post-goes

http://radar.weather.gov/radar.php?prod%20...%20p&loop=yes

Thanks to Jen Bayles for asking the initial question.


Is this what you are shooting for?

Sat Loop
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Re: Is there a low level turning?

#8 Postby Aric Dunn » Tue Jul 03, 2007 4:44 pm

radar is impressive .. not really for a TC more the intense rain.. but there is a mesoscale feature.. that may be able to do something if it sits long enough... Image
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#9 Postby southerngale » Tue Jul 03, 2007 5:06 pm

It probably won't develop into anything, but I can definitely see the rotation. It doesn't seem to be moving much.
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#10 Postby Stratosphere747 » Tue Jul 03, 2007 5:24 pm

Not near as easy to see, compared to earlier. Would be crazy with the pattern Texas has been in over the last two weeks to have something pop up.
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#11 Postby Aric Dunn » Tue Jul 03, 2007 5:37 pm

some of the precip totals.. just off shore are over 11 inches and probably passing a foot
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Re: Is there a low level turning?

#12 Postby lrak » Tue Jul 03, 2007 6:43 pm

The winds are crazy right now, and check out the pier shot along with the pressure.

http://www.corpusbeach.com/portacam2.htm


http://coastalsurfing.com/?page_id=5

http://www.ndbc.noaa.gov/station_page.php?station=PTAT2

It rained all day here today, and its been along time since thats happened. Also all the cams were showing lakeside conditions this morning.
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Re: Is there a low level turning?

#13 Postby Ptarmigan » Tue Jul 03, 2007 7:28 pm

That blob formed last night. It's been over the Gulf for nearly 24 hours. It should be worth watching. Hurricane Alicia formed from a MCS that went over the Gulf and underwent an explosive development.
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Re: Is there a low level turning?

#14 Postby Stratosphere747 » Tue Jul 03, 2007 8:22 pm

Snippet from Houston disco...

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
727 PM CDT TUE JUL 3 2007

23Z SFC ANALYSIS SHOWS A WEAK
LOW PRESSURE SYSTEM DEVELOPING SE OF CRP WITH A WEAK TROUGH AXIS
EXTENDING NE ALONG THE COAST.

Image
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Re: Is there a low level turning?

#15 Postby MiamiensisWx » Tue Jul 03, 2007 8:32 pm

This system appears to be associated with an upper low over interior Texas. You can detect a broad rotation on this regional blend of radar loops. I have noticed plenty of mid-level convergence, and a trough has enhanced convective activity over the area. This loop indicates the extent of the non-tropical disturbance. Upper-level shear is quite high, as this system is a CONUS feature. A weak jet streak feature is entrenched over the vicinity. The southeastern portion of energy has produced a weak sfc low off the coast, but I do not think it will have enough time to gain tropical characteristics; a trough is approaching the area. In addition, the cells have been influenced by land-based convection; this is not a positive sign for tropical cyclogenesis under this synoptic setup.
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#16 Postby Cyclone1 » Tue Jul 03, 2007 9:47 pm

I'll eat my hat if this becomes a tropical cylcone. :wink:
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Re: Is there a low level turning?

#17 Postby Stormcenter » Wed Jul 04, 2007 12:41 am

It looks like a nice blob of convection is starting to blossum
in the area mentioned in the discussion out of Houston.

http://www.ssd.noaa.gov/goes/east/gmex/loop-avn.html
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Re: Is there a low level turning?

#18 Postby Stormsfury » Wed Jul 04, 2007 10:21 am

I think that's the same MCS that brought almost 10" of rain to Corpus Christi ...
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Re: Is there a low level turning?

#19 Postby Berwick Bay » Wed Jul 04, 2007 11:34 am

I must admit that I wasn't very concerned about this when it was first posted, but as the hours and days drag on with this convection off the Texas Coast, I am beginning to think that there may be some chance for a surface low to develop in the Western GOM.
Here's the WV Loop
http://www.ssd.noaa.gov./goes/east/gmex/loop-wv.html
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Re: Is there a low level turning?

#20 Postby Stormsfury » Wed Jul 04, 2007 12:38 pm

UNISYS is analyzing a 1011mb low between Brownsville, and Corpus Christi, TX at 1 PM EDT ...

SF
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