February 1-5, 2011 Arctic Blast/Winter Storm Discussion

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srainhoutx
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wxman57 wrote:
srainhoutx wrote:Also notice that the Canadian never shows 850's below freezing after the front passes SE TX on Tuesday. Not likely, IMO.
That is true, so what to trust? Sometimes with really cold and thin Arctic air the surface temperature can be quite a bit colder than the 850 mb temperature.
That's why they pay you the 'big bucks'. ;)
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srainhoutx
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I expect this map will change before the afternoon is out...notice all the SWS (Special Weather Statements)...
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Where is the leading edge of the arctic boundary?
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srainhoutx
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harpman wrote:Where is the leading edge of the arctic boundary?

Pouring S of the Canadian Border...

Image
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srainhoutx
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The 12Z Euro suggests about a 6 hour slower progression of the Arctic front on Tuesday afternoon. That model also suggests some mighty chilly temps and a disturbance to our W...moisture spreads up from S TX along the Coast as a surface low develops and heads E into the Gulf, well offshore...could be a wintry mix situation if that model is correct...
01302011 12Z Euro f96.gif
01302011 12Z Euro f120.gif
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TexasMetBlake
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Euro appears to be coming in extremely cold...
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Strange that it'd slow it down by that much, this thing seems to be right on schedual if not slightly ahead. What kind of temps does "mighty chilly" equate to? :)
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Candy Cane wrote:Euro appears to be coming in extremely cold...

eh not that cold. around -4.5C (surface) Friday looks interesting
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Andrew wrote:
Candy Cane wrote:Euro appears to be coming in extremely cold...

eh not that cold. around -4.5C (surface) Friday looks interesting
Well, I can't see that well. I just went to have a physical done and she said my eyesight is going. I thought, crap, I'm 25. By 30 I'll be blind as a bat.
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tireman4
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Gee you are only 25 Candy Cane. Man oh man. I am 20 years older than you. Goodness. This weather watching is like viewing clothes in a dryer. Tumble, tumble, tumble.
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Well I guess FTW isn't even expecting Waco to break 30 on wednesday?

http://www.srh.noaa.gov/fwd/
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very disappointed in the rain this morning... i didnt even pick up .01 at my house. :roll:
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srainhoutx
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The UKMET continues to advertize an Upper Low to our W and a developing surface low in S TX for late week.
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srainhoutx
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More Winter RECON scheduled for this week. There is a lot of interest in the pattern and all the potential modeling issue that remain...

000
NOUS42 KNHC 301800 COR
WEATHER RECONNAISSANCE FLIGHTS
CARCAH, NATIONAL HURRICANE CENTER, MIAMI, FL.
0100 PM EST SUN 30 JANUARY 2011
SUBJECT: WINTER STORM PLAN OF THE DAY (WSPOD)
VALID 31/1100Z JANUARY TO 01/1100Z FEBRUARY 2011
WSPOD NUMBER.....10-061 CORRECTION

I. ATLANTIC REQUIREMENTS
1. NEGATIVE RECONNASSSANCE REQUIREMENTS.
2. OUTLOOK FOR SUCCEEDING DAY.....NEGATIVE.

II. PACIFIC REQUIREMENTS
1. FLIGHT ONE -- TEAL 73
A. P16/ 40.0N 164.0W/ 01/1200Z
B. AFXXX 11WSC TRACK16
C. 01/0600Z
D. 11 DROPS ON TRACK WITH FIRST AT PUBLISHED
DROP POINT 4 AND LAST AT DROP POINT 14
E. AS HIGH AS POSSIBLE/ 01/1800Z
F. PUBLISHED DROP POINTS 1-3 AND 15-17 OMITTED

2. SUCCEEDING DAY OUTLOOK:
A. POSSIBLE C-130J MISSION FOR P27/
DROP 10 (35.5N 156.0W)/ 02/1200Z.
B. POSSIBLE G-IV MISSION FOR P74/
DROP 9 (41.3N 173.2E)/ 02/1200Z....(CORRECTED)
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wxman666
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srainhoutx wrote:The 12Z Euro suggests about a 6 hour slower progression of the Arctic front on Tuesday afternoon. That model also suggests some mighty chilly temps and a disturbance to our W...moisture spreads up from S TX along the Coast as a surface low develops and heads E into the Gulf, well offshore...could be a wintry mix situation if that model is correct...
01302011 12Z Euro f96.gif
01302011 12Z Euro f120.gif

Would that be Tuesday or late week?
Ready for severe weather season!!
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Fun map from The Weather Channel says snow in Houston Thursday night...

http://www.weather.com/maps/maptype/ten ... =undefined
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Oh, and NWS now mentioning snow in the forecast down in Alice on Thursday and Friday: http://forecast.weather.gov/MapClick.ph ... mx=1&zmy=1.

Can HGX be far behind? ;)
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could the forecasts be quite conservative on the cold air? Is there any kind of chance it could get colder? There as talk about the ice of 1999 - was that right? I remember that year. It kind of surprised me - It had been raining one night and got cold, then the next morning everything was iced over. Could that happen this week?
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Ok, folks. Enjoy this wonderful weather. It ain't going to last much longer... :mrgreen:

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
326 PM CST SUN JAN 30 2011

.DISCUSSION...

...COLDEST AIRMASS SO FAR THIS SEASON ON THE WAY...

SHORTWAVE IS CURRENTLY RIGHT OVERHEAD. AREAS JUST NORTH AND WEST
OF THE FEATURE HAVE SEEN CLOUDS CLEAR OUT AND TEMPS CLIMB INTO THE
MID 70S. WITH RESIDUAL MOISTURE IN PLACE ALONG WITH HEATING AND
STEEP LAPSE RATES ALOFT SOME SCT TSTMS HAVE DEVELOPED. THESE WILL
PROBABLY CONTINUE FOR THE NEXT FEW HOURS AND HAVE THE POTENTIAL
TO PRODUCE SOME HAIL. PRECIP SHOULD WANE WITH THE LOSS OF HEATING
AND AS THE S/W MOVES OFF TO THE EAST. AS WINDS DROP OFF LATER THIS
EVENING EXPECT AREAS OF FOG TO DEVELOP. SEA FOG IS ALSO A PRETTY
GOOD BET BUT COULD BE DELAYED BY THE PRECIP COMPLEX CURRENTLY
JUST OFF THE COAST.

WARM AND MOIST CONDITIONS SHOULD PERSIST ON MONDAY BUT WITH LACK
OF A TRIGGER NOT EXPECTING MUCH IN THE WAY OF PRECIP OTHER SOME
SPOTTY SHRA HERE AND THERE. LLJ REALLY CRANKS UP (40-50KT) MON
EVENING AHEAD OF AN ARCTIC FRONT THAT WILL BE MOVING TOWARD THE
REGION. CONSIDERING THE STRONG MOISTURE TRANSPORT (PW`S FCST
1.3" TO 1.5" - BUT PROBABLY SLIGHTLY OVERDONE) EXPECT A FAST SHOT
OF SHRA/TSTMS AHEAD OF THE FRONT AS IT MOVES IN. THE FRONT SHOULD
BE APPROACHING NW PARTS SHORTLY AFTER SUNRISE TUE...HWY 59 CORRIDOR BY
LUNCH...AND OFF THE GLS COAST AN HOUR OR TWO LATER. MORNING TEMPS
IN THE 60S WILL FALL THRU THE DAY AND INTO THE 30S & 40S BY 6PM.

MODELS ARE IN GOOD AGREEMENT SHOWING VERY COLD AIR WITH THIS
SYSTEM...WITH 925 MB TEMPS BOTTOMING OUT BETWEEN -5C (SOUTH) TO -12C
NORTH BY SUNRISE WED. WIND CHILLS IN THE SINGLE DIGITS AND TEENS
ARE POSSIBLE TUE/WED NIGHT. TIME SECTIONS INDICATE 925 NM TEMPS WON`T
MAKE IT ABOVE 0C UNTIL SAT MORNING. THAT BEING SAID...CONTINUED
THE TREND OF LOWERING TEMPS. ALSO WATCHING AN INTERESTING PATTERN
DEVELOP TOWARD THE END OF THE WEEK. A LARGE TROF DEVELOPS ACROSS
THE CNTL US THIS WEEK WITH A FEW SHORTWAVES ROTATING AROUND -
MOSTLY INSIGNIFICANT WX-WISE FOR US AS THEY ARE TOO FAR NORTH.
BUT BY FRI ONE OF THE SHORTWAVES DIGS DEEP INTO NCNTL MEXICO AND
EJECTS INTO SCNTL TX FRI/FRI NIGHT. AS THIS IS OCCURRING ISENTROPIC
LIFT WILL BE ONGOING OVER THE COLD AIRMASS AT THE SFC. PLENTY OF
TIME TO ANALYZE THIS CONSIDERING IT`S SO FAR OUT...BUT WILL GO
AHEAD AND MENTION 20% CHANCE OF -SN ACROSS NRN PARTS FRI
AFTN/NIGHT CONSIDERING FAIRLY GOOD MODEL AGREEMENT
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Hmmmm! I see the NWS is playing along..

Forecast for Porter:


Friday Night
Mostly cloudy in the evening then becoming partly cloudy. A slight chance of flurries. Lows in the mid 20s.
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