January: Increasing Clouds/Rain & Warmer To End Month

General Weather Discussions and Analysis
Andrew
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wxman57 wrote:Don't know where Jeff got the photo. I just got Jeff's email with the photo attached. That's quite a lot of small hail.

Yea it came down fast. Wasn't large hail but there was so much of it it blanketed a lot of the grass for a good 5-10 minutes.
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MontgomeryCoWx
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Well... damn...
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srainhoutx
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For those wondering, a dryline is developing in W Texas from Wink to Marfa. That will be the area to watch in the hours ahead as the upper low drops ESE from Southern New Mexico for strong severe storms to start firing and march E. The rains of earlier today have traveled N to where the HPC has the higher totals. That does not mean that we will escape heavy rainfall and severe weather over night and on Wednesday. In fact rotating storms are expected during the late night/early morning hours as well as Wednesday and I encourage folks to not let your guard down. This morning/mid day was just a teaser, so to speak of the bigger event expected… ;)

Image

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This morning/midday I got nothing...so it that was the teaser...Seems like the more bad weather/flooding is expected that is the time it does not materialize. If we are under a 40% chance of rain we flood..lol
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srainhoutx
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The 25/08Z HRRR suggests a strong line of storms to our W and showers/storms developing along the Coast...
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01242012 20Z HRRR cref_t5sfc_f12.png
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srainhoutx
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HGX issues Dense Fog Advisory for Chambers, Galveston and Harris Counties until 9:00AM tomorrow morning.
Carla/Alicia/Jerry(In The Eye)/Michelle/Charley/Ivan/Dennis/Katrina/Rita/Wilma/Humberto/Ike/Harvey

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srainhoutx
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The SPC reconfigures the Day 1 Sight Risk to include our Western Counties in SE TX…

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0657 PM CST TUE JAN 24 2012

VALID 250100Z - 251200Z

...THERE IS A SLGT RISK OF SVR TSTMS ACROSS PARTS OF WCNTRL TX...THE
TX HILL COUNTRY AND MIDDLE TX COAST...


...TX HILL COUNTRY/MIDDLE TX COAST...
WATER VAPOR IMAGERY CURRENTLY SHOWS AN UPPER-LEVEL LOW ENTERING WEST
TX WITH THE LEADING EDGE OF LARGE-SCALE ASCENT MOVING ACROSS THE
PECOS RIVER VALLEY. AS THIS BAND OF ASCENT MOVES INTO WCNTRL TX OVER
THE NEXT 2 TO 4 HOURS...THUNDERSTORMS SHOULD INITIATE ALONG THE WRN
EDGE OF THE MOIST AXIS FROM EAST OF ABILENE SSWWD TO AROUND EAGLE
PASS. ALTHOUGH THE EXACT TIMING OF INITIATION REMAINS
UNCERTAIN...THE LATEST HRRR MODEL DEVELOPS SFC-BASED THUNDERSTORMS
ALONG THIS CORRIDOR BEGINNING AROUND 04Z. IF THIS SCENARIO PANS
OUT...STORM COVERAGE SHOULD STEADILY INCREASE LATE THIS EVENING AS A
LINEAR MCS GRADUALLY ORGANIZES AND MOVES ESEWD ACROSS THE TX HILL
COUNTRY AND ONTO THE TX COASTAL PLAIN LATE TONIGHT.


THE BEST ENVIRONMENT FOR SEVERE STORMS THIS EVENING APPEARS TO BE
FROM AROUND EAGLE PASS EXTENDING NNEWD INTO THE WRN TX HILL COUNTRY.
FORECAST SOUNDINGS ALONG THIS CORRIDOR FROM 03Z TO 06Z SHOW MODERATE
INSTABILITY /MLCAPE 1000 TO 1500 J/KG/...0-6 KM SHEAR OF 50 TO 60 KT
WITH 700 TO 500 MB LAPSE RATES OF 7.5 TO 8.0 C/KM. THIS ENVIRONMENT
SHOULD BE FAVORABLE FOR SUPERCELLS WITH LARGE HAIL. IN
ADDITION...LOW-LEVEL SHEAR APPEARS ADEQUATE FOR A TORNADO OR TWO.
THE HAIL AND TORNADO THREAT SHOULD BE MAXIMIZED WITH CELLS THAT HAVE
ACCESS TO THE STRONGEST INSTABILITY AND REMAIN DISCRETE.
ALTHOUGH
SOMEWHAT CONDITIONAL...HAVE RETAINED THE HATCHED SIGNIFICANT HAIL
THREAT AREA FOR HAILSTONES GREATER THAN 2 INCHES IN DIAMETER...BUT
HAVE MOVED THE THREAT AREA TO JUST WEST OF THE SAN ANTONIO AND
AUSTIN AREAS WHERE THE MOST INTENSE STORMS ARE EXPECTED.

HOWEVER...THE WIND DAMAGE THREAT MAY BECOME THE MORE DOMINANT THREAT
ESPECIALLY AFTER MIDNIGHT AS CELLS MERGE INTO A NEARLY CONTINUOUS
LINE. LOW-LEVEL SHEAR WILL INCREASE OVERNIGHT ASSOCIATED WITH A 40
TO 50 KT LOW-LEVEL JET SO THIS SHOULD KEEP THE TORNADO THREAT GOING
WITH CELLS EMBEDDED IN THE LINE OR WITH DISCRETE STORMS THAT DEVELOP
OUT AHEAD. THE WIND DAMAGE THREAT SHOULD ALSO CONTINUE AS THE LINEAR
MCS REMAINS WELL ORGANIZED LATE IN THE PERIOD.
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01252012 01Z SPC day1otlk_0100.gif
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Srain, have been watching the ULL over last 12 hours and it appears to be slowing any Eastward progression at this time and diving due South just North of ELP. Large influx of moisture over the Big Bend area with dry slot/dry line very visible approaching C/Tex area. Wondering if ridging previously hinted West and East ridging might keep the ULL slower in progression/ejection to the NE once it starts along or just South of the I10 corridor?
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SPC just issued a mesoscale discussion and indicate a severe weather watch will soon be issued for parts of the Hill Country and Edwards Plateau, including the Austin metro area.

http://www.spc.noaa.gov/products/md/md0064.html
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jasons2k
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Andrew wrote:
Either Jeff received the same photo or he has been checking out the forums as he posted the same picture on his most recent email: :lol:
I'm sure he probably just copied it - I've seen some of my old GrLevel3 radar screenshots appear in his emails...

I hope we still get a real good soaking from this - I'd like an excuse to work from home tomorrow!
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srainhoutx
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Portastorm wrote:SPC just issued a mesoscale discussion and indicate a severe weather watch will soon be issued for parts of the Hill Country and Edwards Plateau, including the Austin metro area.

http://www.spc.noaa.gov/products/md/md0064.html
MESOSCALE DISCUSSION 0064
NWS STORM PREDICTION CENTER NORMAN OK
0713 PM CST TUE JAN 24 2012

AREAS AFFECTED...EDWARDS PLATEAU...HILL COUNTRY

CONCERNING...SEVERE POTENTIAL...WATCH LIKELY

VALID 250113Z - 250245Z

THREAT FOR LARGE HAIL...ISOLATED DAMAGING WINDS...AND PERHAPS A
TORNADO WILL INCREASE AS TSTM COVERAGE GROWS LATER THIS EVENING.
ALTHOUGH UNCERTAINTY EXISTS OVER THE TYPE OF WW...THE PROBABILITY OF
ISSUANCE BY 03Z IS 60 PERCENT.

01Z SURFACE ANALYSIS PLACED A SERIES OF WEAK CYCLONES ACROSS THE
PERMIAN BASIN/BIG BEND...AND ALONG THE RIO GRANDE BETWEEN DRT AND
LRD. PRIMARY SURFACE WARM FRONT HAS BECOME QUASI-STATIONARY S OF THE
HILL COUNTRY WITH A RELATIVELY RICH WARM/MOIST AIR MASS ACROSS MUCH
OF S-CNTRL TX. FARTHER NW...MORE MARGINAL SURFACE-BASED INSTABILITY
EXISTS WITH A STRONG CAPPING INVERSION CENTERED NEAR 800 MB IN THE
00Z DRT RAOB. THIS CAPPING INVERSION WILL BE GRADUALLY REMOVED AS
BAND OF FORCED ASCENT /NOW CROSSING THE BIG BEND/ OVERSPREADS THE
MODIFIED WARM SECTOR OVER THE EDWARDS PLATEAU. STEEP MID-LEVEL LAPSE
RATES AND EFFECTIVE SHEAR OF 40-50 KT WILL PROVE FAVORABLE FOR LARGE
HAIL. WHILE A WEAKNESS IN THE LOW-LEVEL HODOGRAPH MAY PERSIST
BETWEEN 800-700 MB...VEERING MAY BE SUFFICIENT FOR A MARGINAL
TORNADO THREAT. HOWEVER...STRONGER LOW-LEVEL SLYS SHOULD REMAIN
CONFINED E OF THE I-35 CORRIDOR. IN ADDITION...CONVECTION-ALLOWING
MODELS LARGELY SUGGEST TSTMS WOULD QUICKLY TRANSITION INTO A CLUSTER
MODE WITH PROPAGATION TOWARDS THE NE INTO A LESS UNSTABLE AIR MASS.

..GRAMS.. 01/25/2012


ATTN...WFO...CRP...EWX...SJT...
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01252012 mcd0064.gif
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srainhoutx
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PaulEInHouston wrote:Srain, have been watching the ULL over last 12 hours and it appears to be slowing any Eastward progression at this time and diving due South just North of ELP. Large influx of moisture over the Big Bend area with dry slot/dry line very visible approaching C/Tex area. Wondering if ridging previously hinted West and East ridging might keep the ULL slower in progression/ejection to the NE once it starts along or just South of the I10 corridor?
The U/L is elongating N to S as some models indicated. What is different from this event compared to the events of January 9th is the lack of cold air at the surface and aloft and that event was more 'circular' with less dynamics. The 300mb and lower level jet ahead of this storm suggest much better dynamics for severe weather and higher pw's, or heavier rainfall rates. We'll see what the morning brings, but I suspect a very active early morning Wednesday for many in Central/E TX and W LA...I also suspect the 'night crew' will be watching carefully... :mrgreen:
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01252012 0145Z WV 201201250145_SCR_WV.gif
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wxman666
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Anyone have an idea on why SPC is holding off on that watch?
Ready for severe weather season!!
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srainhoutx
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EXCESSIVE RAINFALL DISCUSSION
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
826 PM EST TUE JAN 24 2012

...VALID 03Z WED JAN 25 2012 - 00Z THU JAN 26 2012...
...REFERENCE AWIPS GRAPHIC UNDER...DAY 1 EXCESSIVE RAINFALL...



...ERN TX/EXTREME SRN OK...
NO CHANGES TO EARLIER OUTLOOK DUE TO THE VERY HI FFG THRU THE
REGION....BUT WITH CONTINUOUS MOD/HVY RNFL OVR THE REGION THRU
TNGT...WOULD NOT BE SURPRISED TO SEE MUCH LWR FFG BY MRNG WITH
SEVERAL AREAS EXPERIENCING RUNOFF PROBLEMS.

LATEST REGIONAL RDR LOOPS SHOWS A BROAD REGION OF MOD/HVY RNFL OVR
THE SRN PLNS THIS EVE IN RESPONSE TO AN AREA OF STG ISENTROPIC
LIFT. 25/00Z RAOB DATA SHOWS NARROW ELEV CAPES ACRS NRN TX INTO OK
THAT IS LEADING TO SOME EMBEDDED CONVECTION AND LCLLY HVY RNFL.
THERE IS STILL SOME LOLVL DRY AIR THAT IS INHIBITING HIER RNFL
RATES. RAOB DATA INTO SRN TX SHOWS MUCH MORE EXPANSIVE
CAPES/INSTBLTY THAT WL CONT TO LIFT NWD AND LKLY EXPAND TNGT AND
THEN PUSH EWD ON WED AS THE MIDLVL SYS OVR SRN NM EDGES EWD.
LATEST WV SATL PICS AND UPR AIR DATA INDICATES A SHRTWV PUSHING
THRU FAR WRN TX THAT EXTENDS INTO NERN MEXICO THIS EVE. AS THIS
IMPULSE ROTATES NEWD AND INTO TX...CONVECTION SHLD BEGIN TO
REDEVELOP SWD INTO THE VERY MOIST AIRMASS THAT IS GETTING PULLED
NWD FM THE GULF OF MEX. UPR FLOW IS ALREADY SOMEWHAT DIFL...BUT WL
BECOME VERY DIFL TNGT WITH IMPRESSIVE UPR JET COUPLING THAT WL
INDUCE A LRG REGION OF VERY STG UPR DVRG FLOW AND DEEP LYRD
ASCENT. LOLVL FLOW WL INCRS WITH MDLS SHOWING 8H SRLY FLOW ARND 50
KTS THAT COMBINED WITH THE DEEP MSTR WL SUPPORT VERY ANOMALOUS
MSTR FLUX. PWS ARE FCST TO BUILD TO 1.25-1.50 INCHES...WHICH ARE
CLOSE TO TWO STDS ABV NORMAL AND ARND 200 PERCENT OF NORMAL. 8H
V-FLUX MSTR ANOMALIES WL QUICKLY BUILD TO 3-5 STDS ABV NORMAL.
MDLS ARE VERY SUPPORTIVE OF CONVECTION TRAINING NWD TNGT THRU
CNTRL TX...THEN AS MIDLVL HGT FALLS BEGIN TO PUSH EWD LATER TNGT
INTO WED MRNG...CONVECTION SHLD BEGIN TO PUSH EWD WITH POSSIBLY
SOME ACCELERATION LATER WED AS HGT FALLS PUSH E. THE MAIN THREAT
SHLD BE INTO WED MRNG THRU CNTRL/ERN TX WHERE LCL 1-2 INCH PER HR
RNFL RATES ARE LKLY. ISOLD 4-5 INCH TOTALS ARE POSSIBLY WHERE
CONVECTION TRAINS FOR SEVERAL HRS.
Carla/Alicia/Jerry(In The Eye)/Michelle/Charley/Ivan/Dennis/Katrina/Rita/Wilma/Humberto/Ike/Harvey

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srainhoutx
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The 00Z WRF NMM suggest the U/L may be a bit slower than the meso guidance had offered earlier. The NAM had been an outlier and that model has trended toward a GFF/Euro solution with upper low tracking across Central/SE TX. Clouds/showers may linger into Thursday evening as that feature heads E of the area.
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01252012 00Z WRF NMM wf18.gif
01252012 00Z WRF NMM wf24.gif
01252012 00Z WRF NMM wf42.gif
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is there any way to tell if this latest observation is legit? surrounding temps aren't too far off and other sites aren't under this band of precip, so I guess it's possible?


Thunderstorm Light Snow Fog/Mist and Breezy

36 °F
(2 °C)
Humidity: 86 %
Wind Speed: N 21 MPH
Barometer: 30.09" (1019.3 mb)
Dewpoint: 32 °F (0 °C)
Wind Chill: 25 °F (-4 °C)
Visibility: 5.00 mi.
More Local Wx: 3 Day History:


It's out of Amarillo... if this turns out to be true it could mean a stronger push of cold air behind the system.
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srainhoutx
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Amarillo is reporting light rain at this hour, weatherguy. From Nesdis...

SATELLITE PRECIPITATION ESTIMATES..DATE/TIME 01/25/12 0315Z
SATELLITE ANALYSIS BRANCH/NESDIS---NPPU---TEL.301-763-8678
LATEST DATA USED: GOES-13 0300Z KUSSELSON
NOAA AMSU:0111Z DMSP SSMIS:2315Z/2320Z NASA TRMM:1700Z/1830Z
.
LOCATION...CENTRAL TEXAS...SOUTHERN OKLAHOMA...
.
ATTN WFOS...FWD...OUN...EWX...SJT...
ATTN RFCS...LMRFC...ABRFC...WGRFC...
.
EVENT...FOCUS ON NE TO SW CONVECTIVE BAND NORTHERN TEXAS THRU FT WORTH
AREA TO CENTRAL TEXAS NORTH AND WEST OF AUS/SAT...
.
SATELLITE ANALYSIS AND TRENDS...FOCUS ON CONVECTIVE BAND CENTERED NEAR
MILLS AND BROWN COUNTY NORTH AND NE THROUGH THE DALLAS-FT WORTH AREA INTO
SOUTHERN OKLAHOMA AS FIRST WEAKNESS APPROACHING SOUTHWEST AND PULLING
AWAY FROM BIG BEND AREA. ADDITIONAL ENHANCEMENT OF CLOUDS NEAR BIG BEND
ASSOCIATED WITH ANOTHER SHORT WAVE APPROACHING BIG BEND AREA AND PIECE
OF JET NOW COMING AROUND EAST SIDE OF UPPER TROUGH/LOW THAT WAS CUT OFF
BACK IN S CENTRAL NM. WITH SHORT WAVES AND JET ALONG WITH DEEPER MOISTURE
NUDGING WEST INTO CENTRAL TEXAS...CAN ONLY MEAN CONVECTIVE ACTIVITY WILL
BE HANGING AROUND FOR AWHILE CENTRAL TEXAS AND ACTUALLY COULD EASILY
GET STRONGER SOUTHWARD FROM CURRENT CONVECTION AS INSTABILITY INCREASES
WITH IMPULSES AND JET PUSHING INTO C TEXAS. OBVIOUSLY HIGHEST MOISTURE
ALONG UPPER TEXAS COAST WITH 200 PERCENT OF NORMAL AND AT LEAST 2-2.5
STANDARD DEVS ABOVE NORMAL...BUT DEEP MOISTURE NUDGING INTO CENTRAL TEXAS
STILL PROVIDING 150-190 PERCENT OF NORMAL MOISTURE THERE AND WITH GOOD
INSTABILITY WILL HAVE TO WATCH FOR BACK BUILDING OF CELLS AND TRAINING
FOR RAPID INCREASES IN ACCUMULATED AMOUNTS FOR LATER TONIGHT.
.
AN ANNOTATED SATELLITE GRAPHIC SHOWING THE HEAVY PRECIPITATION THREAT AREA
SHOULD BE AVAILABLE ON THE INTERNET ADDRESS LISTED BELOW IN APPROXIMATELY
10-15 MINUTES.
.
SHORT TERM OUTLOOK VALID 0300-0600Z...MEDIUM TO HIGH CONFIDENCE FACTOR IN
SHORT TERM OUTLOOK...SHORT WAVES COMING OUT ACROSS CENTRAL TEXAS AND OUT
OF BIG BEND WITH JET ACTIVITY EAST OF MAIN LOW THAT WILL DRIFT SLOWLY
EAST ACROSS SE NM/SW TEXAS BORDER AREA WILL CONTINUE TO HELP CENTRAL
TEXAS ACTIVITY AND EVEN MORE SO WITH WESTERN EDGE OF DEEP MOISTURE
IN PLACE. HARD TO PICK AN INDIVIDUAL AREA WHERE FF THREAT COULD OCCUR
LATER TONIGHT...BUT COULD BE ISOLATED PROBLEMS CENTERED FROM THE TX-OK
BORDER AREA (MONTAGUE(TX)/JEFFERSON(OK) TO GRAYSON (TX)/
BRYAN(OK) SSW TO SAN SABA/LAMPASAS COUNTY TEXAS.
Carla/Alicia/Jerry(In The Eye)/Michelle/Charley/Ivan/Dennis/Katrina/Rita/Wilma/Humberto/Ike/Harvey

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weatherguy425
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Hmm, still showing up on the NOAA point forecast, must be something with the website.
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Fir North Texas...wouldn't be surprised to see it extended further south.

FLOOD WATCH
NATIONAL WEATHER SERVICE FORT WORTH TX
936 PM CST TUE JAN 24 2012

TXZ091>095-101>107-116>123-130>135-141>148-156>162-174-175-251100-
/O.NEW.KFWD.FF.A.0001.120125T0336Z-120125T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MONTAGUE-COOKE-GRAYSON-FANNIN-LAMAR-JACK-WISE-DENTON-COLLIN-HUNT-
DELTA-HOPKINS-PALO PINTO-PARKER-TARRANT-DALLAS-ROCKWALL-KAUFMAN-
VAN ZANDT-RAINS-ERATH-HOOD-SOMERVELL-JOHNSON-ELLIS-HENDERSON-
COMANCHE-MILLS-HAMILTON-BOSQUE-HILL-NAVARRO-FREESTONE-ANDERSON-
LAMPASAS-CORYELL-BELL-MCLENNAN-FALLS-LIMESTONE-LEON-MILAM-
ROBERTSON-
936 PM CST TUE JAN 24 2012

...FLASH FLOOD WATCH IN EFFECT THROUGH WEDNESDAY MORNING...

THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A

* FLASH FLOOD WATCH FOR ALL OF NORTH TEXAS ALONG AND EAST OF A
LINE FROM JACKSBORO TO COMANCHE.

* THROUGH NOON WEDNESDAY.

* HEAVY RAIN OVERNIGHT IS EXPECTED TO ADD AN ADDITIONAL TWO TO
FOUR INCHES TO THE RAIN THAT HAS ALREADY FALLEN.

* UNDERPASSES...LOW WATER CROSSINGS...CREEKS AND DITCHES...AND
MANY STREAMS AND RIVERS MAY SEE RAPID WATER LEVEL RISES. AT
NIGHT ESPECIALLY IT IS DIFFICULT TO SEE WATER OVER ROADS...USE
EXTREME CAUTION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR HEAVY
RAIN WHICH MAY LEAD TO FLASH FLOODING. YOU SHOULD MONITOR THE
LATEST FORECASTS FROM THE NATIONAL WEATHER SERVICE AND BE
PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED FOR
YOUR AREA.
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URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 13
NWS STORM PREDICTION CENTER NORMAN OK
1005 PM CST TUE JAN 24 2012

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

SOUTH CENTRAL TEXAS

EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 1005 PM
UNTIL 500 AM CST.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 85 STATUTE
MILES EAST AND WEST OF A LINE FROM 25 MILES NORTHWEST OF AUSTIN
TEXAS TO 35 MILES WEST SOUTHWEST OF LAREDO TEXAS. FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU3).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

DISCUSSION...ASCENT IN ADVANCE OF A MIDLEVEL LOW OVER FAR W TX WILL
SPREAD EWD OVERNIGHT FROM THE RIO GRANDE TO S CENTRAL TX. A
MOIST/UNSTABLE AIR MASS IS ALREADY IN PLACE ACROSS S TX...AND THE
CAP WILL WEAKEN SUFFICIENTLY TO SUPPORT THUNDERSTORM DEVELOPMENT
FROM THE LAREDO AREA NEWD. MEANWHILE...LOW-LEVEL SHEAR IS
RELATIVELY STRONG ALONG THE CORRIDOR OF A 40+ KT LLJ /EFFECTIVE SRH
AOA 300 M2 PER S2/...WITH DEEP-LAYER SHEAR IN THE RANGE FAVORABLE
FOR SUPERCELLS. A TORNADO OR TWO WILL BE POSSIBLE WITH THE INITIAL
/MORE DISCRETE/ STORMS EXPECTED TO FORM IN THE NEXT COUPLE OF HOURS
NEAR THE RIO GRANDE...ALONG WITH LARGE HAIL. THE DAMAGING WIND RISK
WILL INCREASE SOME LATER TONIGHT AS STORMS EVOLVE INTO A LARGER
LINEAR MCS AND MOVE EWD.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 23030.


...THOMPSON


======================================================================

188
WWUS40 KWNS 250407
WWP3

TORNADO WATCH PROBABILITIES FOR WT 0013
NWS STORM PREDICTION CENTER NORMAN OK
1007 PM CST TUE JAN 24 2012

WT 0013
PROBABILITY TABLE:
PROB OF 2 OR MORE TORNADOES : 40%
PROB OF 1 OR MORE STRONG /F2-F5/ TORNADOES : 20%
PROB OF 10 OR MORE SEVERE WIND EVENTS : 30%
PROB OF 1 OR MORE WIND EVENTS >= 65 KNOTS : 30%
PROB OF 10 OR MORE SEVERE HAIL EVENTS : 40%
PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES : 30%
PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS : 70%

&&
ATTRIBUTE TABLE:
MAX HAIL /INCHES/ : 2.0
MAX WIND GUSTS SURFACE /KNOTS/ : 60
MAX TOPS /X 100 FEET/ : 500
MEAN STORM MOTION VECTOR /DEGREES AND KNOTS/ : 23030
PARTICULARLY DANGEROUS SITUATION : NO

&&
FOR A COMPLETE GEOGRAPHICAL DEPICTION OF THE WATCH AND
WATCH EXPIRATION INFORMATION SEE WOUS64 FOR WOU3.

$$
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