Tornado Warning 34, NWS Corpus Christi, TX

602 
WWUS54 KCRP 181455
SVSCRP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
955 AM CDT SAT SEP 18 2010

TXC007-057-181500-
/O.CON.KCRP.TO.W.0034.000000T0000Z-100918T1500Z/
ARANSAS-CALHOUN-
955 AM CDT SAT SEP 18 2010

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 AM CDT FOR
NORTHEASTERN ARANSAS AND SOUTHWESTERN CALHOUN COUNTIES...

AT 950 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
WEAK ROTATION WITH A SHOWER OVER ARANSAS COUNTY...OR 14 MILES 
NORTHEAST OF ROCKPORT...MOVING NORTHWEST AT 20 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

&&

LAT...LON 2817 9669 2814 9672 2804 9685 2808 9693
      2811 9692 2812 9700 2829 9693 2822 9679
      2815 9687 2811 9683 2812 9681 2815 9682
      2819 9679 2820 9674
TIME...MOT...LOC 1455Z 120DEG 17KT 2817 9689

$$

GW

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
744 AM CDT SAT SEP 18 2010

.DISCUSSION...NOTE AVIATION DISCUSSION BELOW.

&&

.AVIATION...MVFR CONDITIONS WILL PREVAIL DURING THE TAF PERIOD
OWING TO CEILINGS/VISIBILITIES. SOME LOCATIONS MAY EXPERIENCE
BRIEF IFR CONDITIONS. NUMEROUS/OCCASIONAL SHOWERS AND ISOLD
THUNDERSTORMS EXPECTED TODAY...ESPECIALLY EAST OF US 281.
GENERALLY LIGHT/MODERATE ONSHORE FLOW AREAWIDE.

&&

.PREV DISCUSSION... /ISSUED 500 AM CDT SAT SEP 18 2010/

SHORT TERM (TODAY THROUGH SUNDAY)...THE NAM/GFS PROG A WEAK UPPER
DISTURBANCE TO MOVE SLOWLY ACRS THE REGION DRG THE PERIOD.
PROXIMITY SOUNDINGS REVEAL COPIOUS MSTR WITH SATURATED CONDITIONS
IN THE LOWEST 5KM. MSAS REVEALS A SFC TROUGH WITH AXIS OVER THE
COASTAL WATERS. THE GFS ALREADY INITIALIZES THIS AXIS ALG THE
COAST WHILE THE NAM IS MORE ACCURATE WITH THE CURRENT PSN OF THE
AXIS STILL OFFSHORE. NEVERTHELESS...THE NAM MAINTAINS/DEVELOPS
SPEED CONVERGENCE ALG THE COAST TODAY. ANTICIPATE WIDESPREAD
SHOWER ACTIVITY (ONLY ISOLD THUNDER) OVER THE SRN CWA WITH
SCT/NUMEROUS SHOWERS ELSEWHERE. ANTICIPATE THAT THE SFC TROUGH WL
CONTRIBUE TO TRAINING ECHOES ACRS THE SERN CWA. THE COMBINATION OF
ANTICIPATED PCPN AMOUNTS AND FFG WARRANTS A FLASH FLOOD WATCH FOR
THE SERN CWA TODAY. SIMILAR ATMOSPHERIC CONDITIONS ARE EXPECTED
SUNDAY AND ANTICIPATE SCT/NUMEROUS CONVECTION. FCST MAX TEMPS
ABOVE NAM DETERMINISTIC AND CLOSER TO PERSISTENCE.

MARINE...WILL MAINTAIN SMALL CRAFT ADVISORY FOR THE COASTAL
WATERS OWING TO SWELLS (BUOY 42020 AND WAVEWATCH OUTPUT)
ASSOCIATED WITH KARL. WIND OVER THE COASTAL WATERS WILL LIKELY
REMAIN IN THE 15-20KT RANGE. NUMEROUS SHOWERS AND ISOLD
THUNDERSTORMS EXPECTED TODAY. ADDITIONAL CONVECTION EXPECTED
SUNDAY YET CONCUR WITH WAVEWATCH THAT SEA HEIGHTS WILL SLOWLY
DECAY. EXTENDED THE MARINE WEATHER STATEMENT FOR TROPICAL
FUNNELS/WATERSPOUTS TODAY OWING TO STRONG LOW LEVEL LAPSE RATES
PROGD BY THE NAM.

COASTAL...THE COMBINATION OF SWELL AND WIND WAVES MAY RESULT IN
WATER LEVELS AROUND 2FT MSL DURING THE TIME OF HIGH TIDE. THUS...
WILL RETAIN THE CURRENT COASTAL FLOOD ADVISORY FOR TODAY.
CONDITIONS SHOULD IMPROVE SUNDAY OWING TO DECAYING SWELLS AND
DECREASED ONSHORE FLOW.

LONG TERM (SUNDAY NIGHT THROUGH FRIDAY)...THE WET PATTERN WILL
CONTINUE THROUGH THE MIDDLE OF THE WEEK AS DEEP TROPICAL MOISTURE
CONTINUES ACROSS SOUTH TEXAS. PWATS WILL CONTINUE TO RUN 2-2.4
INCHES THROUGH WEDNESDAY. MID LEVEL HIGH PRESSURE CENTERED NEAR
ARKANSAS WILL SLOWLY SLIDE EAST THROUGH TUESDAY AS A SHORTWAVE MOVES
THROUGH THE CENTRAL PLAINS. DEEP EASTERLY FLOW WILL BECOME
SOUTHEASTERLY AND CONTINUE THE TAP OF MOISTURE FROM THE BAY OF
CAMPECHE. STEEP LLVL LAPSE RATES WILL CONTINUE THROUGH THE BEGINNING
OF THE WEEK...SO WATERSPOUTS AND TROPICAL FUNNELS WILL STILL BE
POSSIBLE. 700MB TEMPS ARE EXPECTED TO STAY AROUND 8-9C THROUGH THE
MIDDLE OF THE WEEK...AND WITH DEEP TROPICAL MOISTURE IN PLACE...AT
LEAST SCATTERED POPS ARE EXPECTED THROUGH WEDNESDAY. BUMPED UP POPS
TO LIKELY ACROSS THE SOUTHERN HALF OF THE CWA FOR MONDAY...WITH
CHANCE POPS ELSEWHERE. THE MID LEVEL RIDGE WILL SLOWLY START
BUILDING BACK INTO THE AREA FROM THE EAST ON THURSDAY...WHICH WILL
TRY TO PUSH OUT THE TROPICAL MOISTURE. THEREFORE...TAPERED POPS
TOWARDS CLIMO LATE IN THE PERIOD. HIGH TEMPERATURES WILL BE NEAR
NORMAL DUE TO CLOUD COVER AND RAIN CHANCES...AND LOWS SHOULD BE NEAR
TO SLIGHTLY ABOVE NORMAL.

&&

.PRELIMINARY POINT TEMPS/POPS...
CORPUS CHRISTI    86  77  85  76  88  /  80  60  70  40  60
VICTORIA          87  75  86  76  90  /  50  30  50  20  40
LAREDO            90  76  89  76  93  /  50  50  60  40  50
ALICE             88  75  87  75  89  /  70  40  70  40  60
ROCKPORT          86  78  85  79  88  /  70  50  60  40  60
COTULLA           91  73  89  71  91  /  50  30  50  30  40
KINGSVILLE        87  77  86  76  90  /  80  60  70  40  60
NAVY CORPUS       86  79  85  79  86  /  80  60  70  40  60

&&

.CRP WATCHES/WARNINGS/ADVISORIES...
TX...COASTAL FLOOD ADVISORY UNTIL 7 AM CDT SUNDAY FOR THE FOLLOWING
     ZONES: ARANSAS...CALHOUN...KLEBERG...NUECES...REFUGIO...SAN
     PATRICIO.

     FLASH FLOOD WATCH THROUGH THIS EVENING FOR THE FOLLOWING ZONES:
     KLEBERG...NUECES...SAN PATRICIO.

GM...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS UNTIL 7 AM CDT SUNDAY
     FOR THE FOLLOWING ZONES: COASTAL WATERS FROM BAFFIN BAY TO
     PORT ARANSAS OUT 20 NM...COASTAL WATERS FROM PORT ARANSAS
     TO MATAGORDA SHIP CHANNEL OUT 20 NM...WATERS FROM BAFFIN
     BAY TO PORT ARANSAS FROM 20 TO 60 NM...WATERS FROM PORT
     ARANSAS TO MATAGORDA SHIP CHANNEL FROM 20 TO 60 NM.

&&

WC/87...SHORT TERM

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
602 AM CDT SAT SEP 18 2010

GMZ230-235-250-255-270-275-TXZ229>234-239>247-191115-
BAYS AND WATERWAYS FROM BAFFIN BAY TO PORT ARANSAS-
BAYS AND WATERWAYS FROM PORT ARANSAS TO PORT O'CONNOR-
COASTAL WATERS FROM BAFFIN BAY TO PORT ARANSAS OUT 20 NM-
COASTAL WATERS FROM PORT ARANSAS TO MATAGORDA SHIP CHANNEL OUT
20 NM-WATERS FROM BAFFIN BAY TO PORT ARANSAS FROM 20 TO 60 NM-
WATERS FROM PORT ARANSAS TO MATAGORDA SHIP CHANNEL FROM 20 TO
60 NM-LA SALLE-MCMULLEN-LIVE OAK-BEE-GOLIAD-VICTORIA-WEBB-DUVAL-
JIM WELLS-KLEBERG-NUECES-SAN PATRICIO-ARANSAS-REFUGIO-CALHOUN-
602 AM CDT SAT SEP 18 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH TEXAS AND THE MIDDLE
TEXAS COASTAL WATERS.

.DAY ONE...TODAY AND TONIGHT

NUMEROUS TO WIDESPREAD SHOWERS AND ISOLATED THUNDERSTORMS ARE
EXPECTED TODAY AND TONIGHT. A FLASH FLOOD WATCH IS IN EFFECT FOR
THE COUNTIES OF SAN PATRICIO...NUECES...AND KLEBERG. A COASTAL
FLOOD ADVISORY IS IN EFFECT TODAY BETWEEN BAFFIN BAY AND THE
MATAGORDA SHIP CHANNEL. TROPICAL FUNNELS AND WATERSPOUTS ARE
POSSIBLE OVER THE MARINE AREAS TODAY. A SMALL CRAFT ADVISORY IS IN
EFFECT TODAY FOR HIGH SWELLS. THERE IS A MODERATE RISK FOR RIP
CURRENTS NEAR THE COAST TODAY AND TONIGHT. LOCALLY HEAVY RAINFALL
IS POSSIBLE.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

HEAVY RAIN IS POSSIBLE SUNDAY DUE TO DEEP TROPICAL MOISTURE
LINGERING ACROSS SOUTH TEXAS. THERE IS ALSO A LOW POTENTIAL FOR
ISOLATED WATERSPOUTS AND WEAK TORNADOES THROUGH THE BEGINNING OF THE
WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS MAY BE NEEDED TODAY DUE TO THE POTENTIAL FOR FLASH
FLOODING OVER THE COUNTIES OF SAN PATRICIO...NUECES AND KLEBERG
COUNTIES.

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