Texas winter wx thread#4 - big changes on the way eventually
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- Yankeegirl
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GFS keeps getting warmer
Well at 850 each model run, temps continue to rise. It does seem that the core of whatever system comes out goes across deep south texas as well. Will just have to wait and see. I cannot even see the system developing on water vapor yet.
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- Portastorm
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OK ... so its the NAM ... but this still looks better than any GFS run lately:
http://www.nco.ncep.noaa.gov/pmb/nwprod ... _084.shtml
Houston NWS office seems to be picking up on this as well tonight:
LOOKING AHEAD...THE 21/00Z NAM GUIDANCE HAS COME OUT WITH VERY HIGH
POPS ACROSS ALL OF SOUTHEAST TEXAS ON SATURDAY...VERY MUCH IN CONTRAST
WITH THE DRY 20/18Z GFS GUIDANCE. WILL BE INTERESTING TO SEE IF THE
GFS HOLDS ON TO ITS DRY FORECAST
http://www.nco.ncep.noaa.gov/pmb/nwprod ... _084.shtml
Houston NWS office seems to be picking up on this as well tonight:
LOOKING AHEAD...THE 21/00Z NAM GUIDANCE HAS COME OUT WITH VERY HIGH
POPS ACROSS ALL OF SOUTHEAST TEXAS ON SATURDAY...VERY MUCH IN CONTRAST
WITH THE DRY 20/18Z GFS GUIDANCE. WILL BE INTERESTING TO SEE IF THE
GFS HOLDS ON TO ITS DRY FORECAST
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Portastorm wrote:OK ... so its the NAM ... but this still looks better than any GFS run lately:
http://www.nco.ncep.noaa.gov/pmb/nwprod ... _084.shtml
Houston NWS office seems to be picking up on this as well tonight:
LOOKING AHEAD...THE 21/00Z NAM GUIDANCE HAS COME OUT WITH VERY HIGH
POPS ACROSS ALL OF SOUTHEAST TEXAS ON SATURDAY...VERY MUCH IN CONTRAST
WITH THE DRY 20/18Z GFS GUIDANCE. WILL BE INTERESTING TO SEE IF THE
GFS HOLDS ON TO ITS DRY FORECAST
I noticed that on the 18z NAM too. I hope the 00Z GFS will trend towards the NAM and gives us in central Texas a little hope.

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- Extremeweatherguy
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This is very interesting. The 0z GFS will be crucial for sure. Hope it comes out promising!double D wrote:Portastorm wrote:OK ... so its the NAM ... but this still looks better than any GFS run lately:
http://www.nco.ncep.noaa.gov/pmb/nwprod ... _084.shtml
Houston NWS office seems to be picking up on this as well tonight:
LOOKING AHEAD...THE 21/00Z NAM GUIDANCE HAS COME OUT WITH VERY HIGH
POPS ACROSS ALL OF SOUTHEAST TEXAS ON SATURDAY...VERY MUCH IN CONTRAST
WITH THE DRY 20/18Z GFS GUIDANCE. WILL BE INTERESTING TO SEE IF THE
GFS HOLDS ON TO ITS DRY FORECAST
I noticed that on the 18z NAM too. I hope the 00Z GFS will trend towards the NAM and gives us in central Texas a little hope.
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- southerngale
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Extremeweatherguy wrote:This is very interesting. The 0z GFS will be crucial for sure. Hope it comes out promising!double D wrote:Portastorm wrote:OK ... so its the NAM ... but this still looks better than any GFS run lately:
http://www.nco.ncep.noaa.gov/pmb/nwprod ... _084.shtml
Houston NWS office seems to be picking up on this as well tonight:
LOOKING AHEAD...THE 21/00Z NAM GUIDANCE HAS COME OUT WITH VERY HIGH
POPS ACROSS ALL OF SOUTHEAST TEXAS ON SATURDAY...VERY MUCH IN CONTRAST
WITH THE DRY 20/18Z GFS GUIDANCE. WILL BE INTERESTING TO SEE IF THE
GFS HOLDS ON TO ITS DRY FORECAST
I noticed that on the 18z NAM too. I hope the 00Z GFS will trend towards the NAM and gives us in central Texas a little hope.

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- Portastorm
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This little "gem" was part of the HWO just issued by Austin/San Antonio NWSFO.
Hmmm ...
.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY
A WINTER STORM SYSTEM COULD BRING A CHANCE OF SNOW OVER MUCH OF
SOUTH CENTRAL TEXAS SATURDAY NIGHT INTO SUNDAY MORNING. SOME
ACCUMULATION IS POSSIBLE...WITH THE BEST CHANCES OVER THE HILL
COUNTRY AND THE SOUTHERN EDWARDS PLATEAU.
Hmmm ...

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY
A WINTER STORM SYSTEM COULD BRING A CHANCE OF SNOW OVER MUCH OF
SOUTH CENTRAL TEXAS SATURDAY NIGHT INTO SUNDAY MORNING. SOME
ACCUMULATION IS POSSIBLE...WITH THE BEST CHANCES OVER THE HILL
COUNTRY AND THE SOUTHERN EDWARDS PLATEAU.
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- cctxhurricanewatcher
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Portastorm wrote:This little "gem" was part of the HWO just issued by Austin/San Antonio NWSFO.
Hmmm ...
![]()
.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY
A WINTER STORM SYSTEM COULD BRING A CHANCE OF SNOW OVER MUCH OF
SOUTH CENTRAL TEXAS SATURDAY NIGHT INTO SUNDAY MORNING. SOME
ACCUMULATION IS POSSIBLE...WITH THE BEST CHANCES OVER THE HILL
COUNTRY AND THE SOUTHERN EDWARDS PLATEAU.
Looks like ol'Lucy is teeing up the ball for you Charl, oh Portastorm.

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- cctxhurricanewatcher
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- Extremeweatherguy
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yes, it is. However, at the same time the 0z NAM is very interesting. Let's just hope the NAM ends up being the one that is correct.Brent wrote:Don't even look at the 0z GFS. It's depressing.
http://www.nco.ncep.noaa.gov/pmb/nwprod ... _084.shtml
^^Christmas eve morning on the 0z NAM^^
http://www.nco.ncep.noaa.gov/pmb/nwprod ... _084.shtml
^^Christmas eve morning on the 0z GFS^^
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- Portastorm
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hriverajr wrote:The 0Z NAM for what its worth is very cold at 850. It does take the center of the shortwave through deep south texas though. There is also some good moisture available as well to the south. The GFS of course is much warmer. The system should begin showing up in about 24 hours or so.
Yeah it's too bad we can't mix and match ... "I'd like the NAM 850mb temps please with a GFS upper low track to go."
Still think this whole thing though is a real long shot ...

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A few thoughts after looking at all the new model runs this morning. I am convinced that someone in Central-Northeastern Texas is going to get a surprise snow on Monday. The models still have the upper level system meandering around. Another thing, the pattern the next few weeks is very conducive for winter storms in the southern plains and Texas. One of these systems is going to phase, and we are going to have a major winter storm within the next couple weeks.
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The 0z runs are different. TheGFS is showing a little bit more cold air at 850. The NAM showing less now. Go figure. They both show the short wave coming more from a more NW direction, abd a tad farther north withthe NGM more to the south. However seems to be less precip potential with both. I think we could consider ourselves real lucky if anything frozen fell from the sky.
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- Portastorm
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Portastorm wrote:hriverajr wrote:The 0Z NAM for what its worth is very cold at 850. It does take the center of the shortwave through deep south texas though. There is also some good moisture available as well to the south. The GFS of course is much warmer. The system should begin showing up in about 24 hours or so.
Yeah it's too bad we can't mix and match ... "I'd like the NAM 850mb temps please with a GFS upper low track to go."
Still think this whole thing though is a real long shot ...
What is funny is that the 06Z GFS and the 12Z NAM have switched places. The GFS is cooler now with the 850 temps and the NAM is MUCH warmer.

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