Severe Thunderstorm Warning 74, NWS Brownsville, TX

285 
WWUS54 KBRO 120749
SVSBRO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
249 AM CDT SAT MAY 12 2012

TXC505-120815-
/O.CON.KBRO.SV.W.0074.000000T0000Z-120512T0815Z/
ZAPATA-
249 AM CDT SAT MAY 12 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 AM CDT
FOR NORTHERN ZAPATA COUNTY...

AT 246 AM CDT NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM 13 MILES NORTHWEST OF BUSTAMANTE...
MOVING SOUTH AT 10 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  LAS PALMAS.
  MEDINA.

THE SEVERE THUNDERSTORM IS ALSO CAPABLE OF PRODUCING...
  QUARTER SIZE HAIL.
  60 MPH WIND GUSTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE REPORT TORNADOES OR FUNNEL CLOUDS...WINDS OF 58 MPH OR
HIGHER...HAIL THE SIZE OF PENNIES OR LARGER...AND ANY WIND DAMAGE TO
YOUR NATIONAL WEATHER SERVICE IN BROWNSVILLE BY CALLING 956-504-1432.

&&


LAT...LON 2732 9937 2728 9933 2727 9896 2716 9895
      2687 9933 2691 9933 2694 9939 2697 9940
      2698 9939 2701 9943 2710 9945 2719 9943
      2727 9946
TIME...MOT...LOC 0746Z 000DEG 22KT 2713 9924

$$

CACERES

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE BROWNSVILLE TX
1240 AM CDT SAT MAY 12 2012

.DISCUSSION...UPDATED FOR LATEST AVIATION DISCUSSION BELOW.
&&

.AVIATION...DEGRADED AVIATION CONDITIONS ARE EXPECTED THROUGH THE
OVERNIGHT HOURS WITH LIGHT WINDS AND CLOUDINESS AROUND 1000 FEET
IN PLACE. FULL VFR CONDITIONS WILL RETURN TOMORROW WITH MODERATE
WINDS AND CLOUD DECKS RISING TO 3000 FEET. DIMINISHING WINDS WILL
OCCUR BEGINNING AROUND SUNSET WITH THINNING AND LOWERING CLOUD
DECKS.
&&

.PREV DISCUSSION... /ISSUED 627 PM CDT FRI MAY 11 2012/

DISCUSSION...UPDATED FOR LATEST AVIATION DISCUSSION BELOW.

AVIATION...SATELLITE AND RADAR IMAGES AS WELL AS SURFACE
OBSERVATIONS INDICATE AN ISOLATED THUNDERSTORM DEVELOPING JUST
NORTH OF BROOKS COUNTY EARLY THIS EVENING. OTHERWISE...A FEW LOW
TO MID LEVEL CLOUDS WERE ACROSS THE CWA. EXPECT MVFR CONDITIONS TO
DEVELOP TONIGHT AS LOW LEVEL MOISTURE REMAINS HIGH. CEILINGS WILL
GRADUALLY IMPROVE TO VFR CONDITIONS AFTER 15Z SATURDAY WITH
DIURNAL HEATING.

PREV DISCUSSION... /ISSUED 241 PM CDT FRI MAY 11 2012/
SHORT TERM /TONIGHT THROUGH SATURDAY NIGHT/ UPPER LEVEL STORM NOW
OVER NORTHERN TEXAS INTERACTING WITH A SURFACE BOUNDARY STRETCHING
FROM MATAMOROS NORTHEAST TOWARDS THE BROWNSVILLE AREA INTO THE
GULF OF MEXICO IS TRIGGERING THUNDERSTORMS IN THAT AREA. MOST OF
THE STORMS WILL CONTINUE TO MOVE 10 TO 15 MPH WITH THE MAIN IMPACT
BEING MODERATE TO HEAVY RAIN...FREQUENT CLOUD TO GROUND LIGHTNING
AND GUSTY WINDS. AT THIS TIME NOT EXPECTING STORMS TO BECOME
SEVERE. NORTHERLY FLOW BEHIND THIS FRONTAL BOUNDARY WILL KEEP
TEMPERATURES INTO THE MID 80S TODAY WITH THE WARMEST SPOTS FURTHER
WEST AS IT CLEARS QUICKER THAN THE COAST.

THE SYSTEM WILL FINALLY EXIT TEXAS BY EARLY SATURDAY WITH SOME
MOISTURE STILL WRAP AROUND THIS SYSTEM. CHANCES OF SHOWERS AND
THUNDERSTORMS WILL CONTINUE AGAIN TOMORROW AS ANOTHER FRONTAL
BOUNDARY MOVES TROUGH THE AREA BY LATE SATURDAY INTO SUNDAY MORNING.
EXPECT A NORTHERLY WIND TO CONTINUE THROUGH THE SATURDAY BECOMING
EAST/NORTHEAST AS THE BOUNDARY MOVES ACROSS THE AREA. LOW
TEMPERATURES TONIGHT WILL REMAIN IN THE LOW 70S ACROSS THE CWA WITH
THE HIGH TEMPERATURES IN THE MID 80S SATURDAY.

LONG TERM /SUNDAY THROUGH FRIDAY/...A WEAKENING COLD FRONT IS
INDICATED TO BE LOCATED JUST SOUTH OF THE RIVER SUNDAY WITH
A MODEST ISENTROPIC FLOW DEVELOPING AS 85H WINDS TURN E-SE AND SURFACE
WINDS REMAIN NE. DRY AIR NEVER REALLY WORKS ITS WAY OVER THE
REGION WITH MOISTURE POOLING UP AGAINST THE SIERRA MADRE AND
SPILLING OVER THE RIVER. DECIDED AT THIS TIME TO JUST ADD SLIGHT
CHANCES FOR SUNDAY WITH LATER SHIFTS POSSIBLY INCREASING THE RAIN
CHANCES ESPECIALLY ACROSS THE UPPER VALLEY WHERE THE MOISTURE WILL
BE DEEPEST. NEXT UPPER TROUGH IS SCHEDULED TO MOVE INTO CENTRAL
TEXAS LATER MONDAY INTO TUESDAY BUT COULD MOVE FASTER THEN WHAT
MODELS ARE CURRENTLY INDICATING. ADDED RAIN CHANCES FOR MONDAY
AFTERNOON THROUGH TUESDAY WITH SOME ISOLATED POCKETS OF HEAVY
RAIN. THIS TROUGH IS NOT AS STRONG AS THE CURRENT TROUGH THAT
BROUGHT US SEVERE THUNDERSTORMS SO NOT EXPECTING SEVERE WEATHER
AT THIS TIME. ONCE THE TROUGH PASSES TO THE EAST WEDNESDAY INTO
THURSDAY THE WET WEATHER OF LATE SHOULD END. TEMPERATURES TO COOL
OFF SLIGHTLY SUNDAY AND MONDAY WITH CLOUDS AND A COOLER NORTHEAST
WIND. WARMER TEMPERATURES CAN BE EXPECTED LATER IN THE WEEK.

MARINE.../TONIGHT THROUGH SATURDAY NIGHT/ STRONG SHOWERS AND
THUNDERSTORMS CONTINUE TO DEVELOP ALONG A BOUNDARY WHICH IS
STATIONARY STRETCHING FROM MATAMOROS INTO THE BROWNSVILLE AREA AND
THE GULF OF MEXICO. MOST OF THE THUNDERSTORMS OVER THE GULF WATERS
HAVE A LOT OF FREQUENT CLOUD TO GROUND LIGHTNING...STRONG GUSTY
WINDS AND POSSIBLE HAIL. EXPECT THE ACTIVITY TO CONTINUE THROUGH
THE AFTERNOON AND MOVE EAST SLOWLY. A SURFACE LOW PRESSURE WILL
GRADUALLY MOVE EAST WHICH WILL AID FOR THE STORMS TO SHIFT EAST AS
WELL. ANOTHER FRONT MOVES ACROSS THE AREA LATE SATURDAY BRINGING A
NORTHERLY FLOW ALOFT AND SURFACE WINDS NORTH TO NORTHEAST WINDS.
SEAS WILL REMAIN BETWEEN 3 TO 4 FEET OVER THE OFFSHORE WATERS.

A LIGHT NORTHEAST TO EAST FLOW IS EXPECTED SUNDAY THROUGH AT LEAST
WEDNESDAY WITH A WEAK COLD FRONT PULLING UP STATIONARY SOUTH OF
THE COASTAL WATERS. A SLIGHT TO MODERATE BUT CHOPPY SEA IS
ANTICIPATED WITH A LONG DURATION AND FETCH OF THE NORTHEAST FLOW.
SHOWERS AND THUNDERSTORMS ARE POSSIBLE SUNDAY THROUGH TUESDAY WITH
DRIER WEATHER LATER IN THE WEEK.
&&

.BRO WATCHES/WARNINGS/ADVISORIES...NONE.
&&

THIS PRODUCT IS ALSO AVAILABLE ON THE WEB AT:
HTTP://WEATHER.GOV/RGV

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE BROWNSVILLE TX
528 AM CDT FRI MAY 11 2012

TXZ248>257-121030-
ZAPATA-JIM HOGG-BROOKS-KENEDY-STARR-HIDALGO-INLAND WILLACY-
INLAND CAMERON-COASTAL WILLACY-COASTAL CAMERON-
528 AM CDT FRI MAY 11 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR DEEP SOUTH TEXAS.

.DAY ONE...TODAY AND TONIGHT.

THERE IS A MODERATE RISK FOR RIP CURRENTS AT AREA BEACHES TODAY.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

THERE IS A MODERATE RISK FOR RIP CURRENTS AT AREA BEACHES SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE NEEDED.

GMZ130-132-135-150-155-170-175-121030-
LAGUNA MADRE FROM THE PORT OF BROWNSVILLE TO THE ARROYO COLORADO-
LAGUNA MADRE FROM THE ARROYO COLORADO TO 5 NM NORTH OF PORT
MANSFIELD TX-
LAGUNA MADRE FROM 5 NM NORTH OF PORT MANSFIELD TO BAFFIN BAY TX-
COASTAL WATERS FROM PORT MANSFIELD TO THE RIO GRANDE OUT 20 NM-
COASTAL WATERS FROM BAFFIN BAY TO PORT MANSFIELD OUT 20 NM-
WATERS FROM PORT MANSFIELD TO THE RIO GRANDE EXTENDING FROM 20 TO
60 NM-
WATERS FROM BAFFIN BAY TO PORT MANSFIELD EXTENDING FROM 20 TO
60 NM-
528 AM CDT FRI MAY 11 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE GULF OF MEXICO AND THE
LAGUNA MADRE.

.DAY ONE...TODAY AND TONIGHT.

SHOWERS AND STRONG THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS THE
LOWER TEXAS COASTAL WATERS THIS MORNING. THE MAIN THREATS WITH
THESE STORMS WILL BE GUSTY WINDS...FREQUENT LIGHTNING AND SMALL
HAIL.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
1042 PM CDT FRI MAY 11 2012

TXZ248-120430-
ZAPATA-
1042 PM CDT FRI MAY 11 2012

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN ZAPATA COUNTY...

A THUNDERSTORM...NEARLY STATIONARY...WILL AFFECT ESCOBAS...UNTIL
1130 PM CDT. GUSTY WINDS UP TO 40 MPH WILL OCCUR. NICKEL SIZE HAIL
IS EXPECTED.

63

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
1158 PM CDT FRI MAY 11 2012

TXZ248-249-120545-
JIM HOGG-ZAPATA-
1158 PM CDT FRI MAY 11 2012

...SIGNIFICANT WEATHER ADVISORY FOR ZAPATA AND JIM HOGG COUNTY...

A THUNDERSTORM...MOVING EAST AT 15 MPH...WILL AFFECT THOMPSONVILLE
AND SOUTH FORK ESTATES...UNTIL 1245 AM CDT. GUSTY WINDS UP TO 40 MPH
WILL OCCUR. NICKEL SIZE HAIL IS EXPECTED.

CACERES

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
126 AM CDT SAT MAY 12 2012

TXZ248-120715-
ZAPATA-
126 AM CDT SAT MAY 12 2012

...SIGNIFICANT WEATHER ADVISORY FOR ZAPATA COUNTY...

A THUNDERSTORM...MOVING EAST AT 15 MPH...WILL AFFECT RURAL NORTHERN
ZAPATA COUNTY...UNTIL 215 AM CDT. GUSTY WINDS UP TO 40 MPH WILL
OCCUR. NICKEL SIZE HAIL IS EXPECTED.

CACERES