SE TX/SW LA weather: Much cooler and WET after Tuesday

[Ed Mahmoud]

[Ptarmigan]

The line of thunderstorms has grown larger and gotten more impressive on radar.

[vbhoutex]

The Southern end of the squall lline appears to be weakening ATT. Still looks strong North of I-10. Will keep watching till I have to hit the sack or till I feel my area is "safe".

[vbhoutex]

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 13
NWS STORM PREDICTION CENTER NORMAN OK
1000 PM CST TUE FEB 10 2009

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

PARTS OF SOUTH TEXAS
COASTAL WATERS

EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 1000 PM
UNTIL 300 AM CST.

HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 95
STATUTE MILES EAST AND WEST OF A LINE FROM 85 MILES NORTHWEST OF
HOUSTON TEXAS TO 35 MILES EAST SOUTHEAST OF BEEVILLE TEXAS. FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU3).

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

OTHER WATCH INFORMATION...CONTINUE...WW 11...WW 12...

DISCUSSION...SQUALL LINE HAS EXTENDED SWD ALONG STRONG COLD FRONT
MOVING EWD ACROSS CENTRAL AND SRN TX. THE STRONG SURFACE CONVERGENCE
WILL ALLOW STORMS TO CONTINUE TO DEVELOP THROUGH THE SIGNIFICANT
INHIBITION. DAMAGING WINDS AND MARGINAL HAIL WILL BE ASSOCIATED WITH
THE LINE AS IT MOVES E/SEWD TOWARD TX COAST.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM
MOTION VECTOR 27030.


...HALES

[srainhoutx]

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
103 AM CST WED FEB 11 2009

THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN BRAZORIA COUNTY IN SOUTHEAST TEXAS...
NORTHEASTERN FORT BEND COUNTY IN SOUTHEAST TEXAS...
SOUTHERN HARRIS COUNTY IN SOUTHEAST TEXAS...

* UNTIL 145 AM CST

* AT 101 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
OF 60 MPH. THIS STORM WAS LOCATED NEAR MEADOWS... MOVING EAST AT
50 MPH.

* LOCATIONS IN THE SEVERE THUNDERSTORM WARNING INCLUDE BUT ARE NOT
LIMITED TO THE MEDICAL CENTER...RELIANT PARK...MINUTE MAID PARK...
JOHNSON SPACE CENTER...HOBBY AIRPORT...HERMAN PARK...THE
GALLERIA...ELLINGTON FIELD...WEST UNIVERSITY PLACE...TOWN WEST...
SUGAR LAND...STAFFORD...SPRING VALLEY...SOUTHSIDE PLACE...SOUTH
HOUSTON...SHELDON...ROSENBERG...RICHMOND...PINEY POINT VILLAGE...
PECAN GROVE...PASADENA...MISSOURI CITY...MISSION BEND...LA PORTE...
KATY...JACINTO CITY...HUNTERS CREEK VILLAGE...HOUSTON...
HIGHLANDS...HEDWIG VILLAGE...GALENA PARK...FIRST COLONY...DEER
PARK...CROSBY...CLOVERLEAF...CHANNELVIEW...BUNKER HILL VILLAGE...
BROOKSIDE VILLAGE...BELLAIRE AND BARRETT.

STRONG WINDS MAY KNOCK DOWN TREES AND POWER LINES OR DAMAGE
BUILDINGS. TAKE COVER NOW!

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
105 AM CST WED FEB 11 2009

TXC201-291-339-407-110730-
/O.CON.KHGX.SV.W.0011.000000T0000Z-090211T0730Z/
SAN JACINTO TX-MONTGOMERY TX-LIBERTY TX-HARRIS TX-
106 AM CST WED FEB 11 2009

...A SEVERE THUNDERSTORM WARNING CONTINUES FOR NORTHERN HARRIS...
WESTERN LIBERTY...SOUTHERN MONTGOMERY AND SOUTHERN SAN JACINTO
COUNTIES UNTIL 130 AM CST...

AT 101 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF
60 MPH. THIS STORM WAS LOCATED NEAR NEW CANEY...OR NEAR KINGWOOD...
AND MOVING EAST AT 55 MPH.

* LOCATIONS IN THE THE SEVERE THUNDERSTORM WARNING INCLUDE BUT ARE
NOT LIMITED TO TARKINGTON PRAIRIE...SPLASHTOWN...PORTER...LAKE
HOUSTON DAM...LAKE CONROE DAM...HOOKS AIRPORT...
BUSH-INTERCONTINENTAL AIRPORT...WOODLOCH...WOODBRANCH...TOMBALL...
THE WOODLANDS...STAGECOACH...SPRING...SPLENDORA...SHENANDOAH...
ROMAN FOREST...PORTER HEIGHTS...PLUM GROVE...PINEHURST...PATTON
VILLAGE...OAK RIDGE NORTH...NORTH CLEVELAND...JERSEY VILLAGE...
HUMBLE...DAYTON...CUT AND SHOOT...CONROE...CLEVELAND...CHATEAU
WOODS AND ALDINE

STRONG WINDS MAY KNOCK DOWN TREES AND POWER LINES OR DAMAGE
BUILDINGS. AVOID WINDOWS AND TAKE COVER...NOW!

[vbhoutex]

Squall line moving through now. Winds gusted near 50 mph(estimate) with now heavy rain. Sustained were measured at 30 mph. Unfortunately the rains won't last long, but some is better than none. Temps dropped from 71ºf to 50ºf in less than 10 minutes here at the house. Currently at 48.6ºF which is 7ºf below predicted low for today.

[jasons2k]

I slept right through it...if anyone has a radar shot that would be appreciated...

[cctxhurricanewatcher]

We actually had a five minute spurt of rain with the front last night. So it goes with droughts.

[southerngale]

I slept right through it...if anyone has a radar shot that would be appreciated...

This is all I have because it's one of the windows I left open and it doesn't automatically update. I know it's not very detailed, but it's the best I can do.

[CajunMama]

Where is this rain coming from????? It's parade weekend! It's not supposed to rain

[srainhoutx]

Where is this rain coming from????? It's parade weekend! It's not supposed to rain

More may be on the way CajunMama...



DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1159 PM CST THU FEB 12 2009

VALID 141200Z - 151200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...

PROGRESSIVE ZONAL UPPER FLOW REGIME WILL CONTINUE THROUGH SATURDAY.
INITIAL SHORTWAVE TROUGH NOW MOVING THROUGH THE CNTRL ROCKIES WILL
DEAMPLIFY AS IT MOVES INTO THE OH VALLEY BY LATE FRIDAY. MODEL
CONSENSUS IS THAT UPSTREAM TROUGH CURRENTLY DIGGING SWD ALONG THE
PACIFIC NW COAST WILL EJECT EAST REACHING THE CNTRL PLAINS SATURDAY
NIGHT. A COLD FRONT WILL SURGE SWD THROUGH THE PLAINS AND OH VALLEY
IN WAKE OF LEAD IMPULSE. BY EARLY FRIDAY THIS BOUNDARY IS FORECAST
TO EXTEND FROM OH VALLEY SWWD THROUGH SRN TX. WRN PORTIONS OF FRONT
WILL LIKELY STALL ALONG THE WRN GULF COASTAL AREA WITHIN ZONE OF
INCREASING SLY FLOW AHEAD OF APPROACHING SHORTWAVE TROUGH. A COASTAL
BOUNDARY WILL HAVE MOVED INLAND ALONG THE SRN PORTIONS OF THE GULF
COASTAL STATES.


...S CNTRL THROUGH SE TX AND THE LOWER MS VALLEY...

SLY LOW LEVEL JET WILL STRENGTHEN ACROSS TX AND THE LOWER MS VALLEY
SATURDAY EVENING IN ADVANCE OF APPROACHING UPPER TROUGH THAT WILL
MOVE THROUGH THE SRN AND CNTRL PLAINS WELL NORTH OF THE FRONTAL
BOUNDARY. THETA-E ADVECTION AND LIFT ABOVE THE SHALLOW SURFACE FRONT
WILL CONTRIBUTE TO ELEVATED INSTABILITY GIVEN PRESENCE OF STEEP MID
LEVEL LAPSE RATES AND COLD MID LEVEL TEMPERATURES. THE ATMOSPHERE
WILL PROBABLY REMAIN CAPPED DURING THE DAY OVER TX.
HOWEVER...INCREASING ISENTROPIC ASCENT MAY BECOME SUFFICIENT TO
WEAKEN THE INVERSION AND BRING PARCELS TO THEIR LFCS DURING THE
EVENING OR OVERNIGHT FROM ERN TX INTO THE LOWER MS VALLEY. POTENTIAL
WILL EXIST FOR ELEVATED SUPERCELLS CAPABLE OF PRODUCING LARGE HAIL.
THIS AREA WILL BE MONITORED FOR A POSSIBLE UPGRADE TO SLIGHT RISK IN
LATER OUTLOOKS.


...SRN PORTIONS OF CNTRL AND ERN GULF COASTAL STATES...

SCATTERED THUNDERSTORMS WILL BE ONGOING EARLY SATURDAY ALONG THE
GULF COASTAL REGION WITHIN ZONE OF MODEST LOW LEVEL THETA-E
ADVECTION AND ISENTROPIC ASCENT ASSOCIATED WITH MOIST WSWLY LOW
LEVEL JET. THIS FEATURE IS FORECAST TO VEER AND SHIFT EAST DURING
THE DAY WITH A GRADUAL DECREASE IN LOW LEVEL FORCING. STORMS WILL
EXIST IN AN ENVIRONMENT CHARACTERIZED BY MODEST INSTABILITY AND
30-40 KT UNIDIRECTIONAL DEEP LAYER FLOW AND SUFFICIENT BULK SHEAR
FOR SPLITTING UPDRAFTS AND BOWING SEGMENTS. THE STRONGER STORMS MAY
BE CAPABLE OF PRODUCING ISOLATED STRONG WIND GUSTS AND HAIL. INITIAL
ACTIVITY WILL LIKELY BE SLIGHTLY ELEVATED...AND BOUNDARY LAYER
WARMING SHOULD BE SLOW DUE TO EXPECTED WIDESPREAD CLOUDS. THIS ALONG
WITH TENDENCY FOR THE LOW LEVEL JET TO DECREASE WITH TIME LOWERS
CONFIDENCE IN AN ORGANIZED SEVERE THREAT.

..DIAL.. 02/13/2009

CLICK TO GET WUUS02 PTSDY2 PRODUCT

NOTE: THE NEXT DAY 2 OUTLOOK IS SCHEDULED BY 1730Z
CURRENT UTC TIME: 1656Z (10:56AM), RELOAD THIS PAGE TO UPDATE THE TIME

[Ed Mahmoud]

Small t-storm on radar coming up US 59 has crossed BW 8, and I actually heard thunder at the Galleria.

May just miss my yard on current course if it doesn't grow any larger.

[Ed Mahmoud]

Weak rotation in Eastern Harris County cell?

[srainhoutx]

Weak rotation in Eastern Harris County cell?

Keep on eye on development SW of Harris County. Clouds have broken to partly cloudy and temps are rising. Afternoon update from HGX...snipet...

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
241 PM CST FRI FEB 13 2009

.DISCUSSION...
BEGINNING TO SEE SOME BREAKS OF SUN ACROSS THE REGION WHICH SHOULD
ALLOW TEMPS TO CLIMB ANOTHER COUPLE DEGREES AND WOULDN`T BE
SURPRISED TO SEE ADDITIONAL SCT ACTIVITY TO DEVELOP INTO EARLY
EVNG. COOL FRONT CURRENTLY MOVING THRU N/W TX SHOULD BE MAKING ITS
WAY INTO SE TX OVERNIGHT BEFORE STALLING BETWEEN I-10 AND THE
COAST ON SAT. EXPECT AREAS OF FOG (SOME DENSE) ALONG/AHEAD OF THE
BOUNDARY. THE FRONT WILL ALSO SERVE AS A FOCUS FOR SCT SHRA & ISO
TSTMS MAINLY LATE TONIGHT AND SAT. MODELS ARE SHOWING A S/W MOVING
OVERHEAD SAT AFTN...AS WELL THE LFQ OF THE H25 JET...WHICH SHOULD
TRIGGER/ENHANCE ADDITIONAL PRECIP. THIS SHOULD AFFECT AREAS NORTH OF THE
FRONT AS WELL WITH ISENTROPIC LIFT KEEPING DECENT PW`S IN PLACE.
UNFORTUNATELY IT MAY AFFECT SOME OUTDOOR V-DAY ACTIVITIES BUT WE
REALLY NEED THE RAIN. PRECIP SHOULD TAPER OFF FROM WEST TO EAST
DURING THE EVNG & OVERNIGHT HOURS SAT.

[vbhoutex]

I've had several showers here at the house today. Still need a lot more though. No thunder or winds yet. Definitely watching area SW of Houston.

[PTrackerLA]

CM you scared away the rain! I thought we would have a fairly wet day for a change, but only a shower early this morning . We could really use some rain so hopefully we'll get some tonight and tomorrow morning and it can clear out well in time for the Rio parade .

[CajunMama]

Are you going to the parade pt? If so, i'll be on the don's seafood, fatima side...3rd float, the toucan float in the front.

[southerngale]

We got a lot of rain overnight. It was coming down in buckets, with frequent thunder & lightning... haven't seen that much t&l in a while. I woke up to ditches overflowing and standing water everywhere. The radar showed a line from west to east, moving ene, training over mostly the same areas for a while. NWS says we're not out of the woods for more, but so far, it's all south of here.

Frick, I'm crossing my fingers, toes, & eyes for you!

[CajunMama]

Thanks frack. I'm sweating out this 70% chance of rain. It's made me quite nervous.

[vbhoutex]

Please don't shoot the messenger, but radar indicates your 70% is on the way. Pretty solid rain shield from Houston East towards you with a lot of it actually to your SW and moving ENE. I'll cross everything too that it is just virga on the radar or at least light enough that it won't matter. Meanwhile in Houston we keep praying for more since we need it badly.