Is Dennis Disregarding The Trough?

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PurdueWx80
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#21 Postby PurdueWx80 » Sat Jul 09, 2005 4:39 pm

Ixolib wrote:
PurdueWx80 wrote:http://www.rap.ucar.edu/weather/satellite/displaySat.php?region=US&itype=wv&size=large&endDate=20050709&endTime=-1&duration=3

To me, this says it all. The shortwave ridge ahead of the upper low just south of Houston is building north and west. The northern Plains ridge is bridging the gap with the west Atlantic ridge - and we have some serious track issues to deal with if my eyes aren't deceiving me. If the WNW motion mentioned by Mr. Stewart over the last 2 hours continues, the height rises behind Cindy and ahead of the upper low will have won out. I think the NHC is right on here, and with almost all model support saying I'm crazy, I should just shut my mouth. But, I'm particularly worried because if this storm does continue WNW, the non-evacuated New Orleans residents are in a heap of trouble.

Just look at the moisture over MS and LA moving to the NNW. Ridge. Building. Will it win out?


Considering the big **IF**, are you raising the possibility of a N.O. hit, or are you considering the possibility of a hit further west than the current NHC forecast?


Yes, my IF basically says to me that a hit at the mouth of the MS River is not out of the question - and the storm will continue NW after landfall, almost without a doubt. Hope everyone in southern MS is outta there.
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mtm4319
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#22 Postby mtm4319 » Sat Jul 09, 2005 4:40 pm

The WKRG channel 5 (Mobile) cone is too narrow. Biloxi isn't even in the cone -- it stops at Pascagoula.
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#23 Postby Ixolib » Sat Jul 09, 2005 4:44 pm

mtm4319 wrote:The WKRG channel 5 (Mobile) cone is too narrow. Biloxi isn't even in the cone -- it stops at Pascagoula.


What, they have they very own cone??!! Or, is it the HNC cone?
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#24 Postby PurdueWx80 » Sat Jul 09, 2005 4:47 pm

Seriously, if any of you are in New Orleans, I would try to leave by this evening, just in case. I know it's a huge hassle and such, but wow.

The 18z NAM does have the "nightmare scenario" for the city, and is actually slightly left of the 12Z run (and also slightly faster). It's at the mouth of the MS River by 18z tomorrow and actually moves WNW towards the city after that. Not good.

1 p.m. tomorrow
http://www.nco.ncep.noaa.gov/pmb/nwprod ... p_024l.gif

7 p.m. tomorrow
http://www.nco.ncep.noaa.gov/pmb/nwprod ... p_030l.gif

And now the 18Z GFS is a bit west of Mobile - ever-so-slight shift west from this morning's run.

http://www.nco.ncep.noaa.gov/pmb/nwprod ... 6_030l.gif
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#25 Postby Nimbus » Sat Jul 09, 2005 5:02 pm

I think the NHC has already discounted the trough since they have the storm making landfall as a cat 3.
Apparantly they feel the shear factor from the trough has diminished.
The official forecast does not call for recurve till possibly early tomorrow morning so all we can do is stay tuned.
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