Severe Thunderstorm Warning 25, NWS Brownsville, TX

000 
WWUS54 KBRO 100454
SVSBRO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
1152 PM CDT WED MAY 9 2007

TXC505-100515-
/O.CON.KBRO.SV.W.0025.000000T0000Z-070510T0515Z/
ZAPATA TX-
1152 PM CDT WED MAY 9 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM CDT
FOR ZAPATA COUNTY...

AT 1148 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE TWO SEVERE THUNDERSTORMS CAPABLE OF PRODUCING NICKEL SIZE 
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  ONE STORM WAS 
LOCATED NEAR SAN YGNACIO...MOVING SOUTHEAST AT 35 MPH. ANOTHER 
STORMS WAS NORTHWEST OF ESCOBAS AND HIGHWAY 16 ALSO MOVING SOUTHEAST 
AT 35 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  ZAPATA BY 1210 AM CDT...AND ESCOBAS AT MIDNIGHT

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

LAT...LON 2733 9966 2704 9979 2673 9904 2724 9899

$$

GB

000 
WWUS54 KBRO 100518
SVSBRO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
1218 AM CDT THU MAY 10 2007

TXC505-100528-
/O.EXP.KBRO.SV.W.0025.000000T0000Z-070510T0515Z/
ZAPATA TX-
1218 AM CDT THU MAY 10 2007

...THE SEVERE THUNDERSTORM WARNING FOR ZAPATA COUNTY EXPIRES AT 1215 
AM CDT...THE SEVERE THUNDERSTORM IS ALONG THE ZAPATA AND JIM HOGG 
COUNTY LINE MOVING SOUTHEAST AT 35 MPH.

LAT...LON 2733 9966 2704 9979 2673 9904 2724 9899

$$

GB

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BROWNSVILLE TX
855 PM CDT WED MAY 9 2007

.DISCUSSION...GFS/NAM FAILS TO RECOGNIZE SOUTHERLY EXTENT AND
MAGNITUDE OF CONVECTION THIS EVENING...PLACING SCT SHRAS 50 TO 70NM
NORTH OF REAL LOCATION. HAVE ADJUSTED POPS TO HPC QPF FOR INIT THRU
12Z 1ST PD...AND HONED SKY AND SVR CONVECTION POTENTIAL TO CURRENT
REAL-TIME TRENDS.
&&

.PREV DISCUSSION...MODERATE SOUTHEASTERLY WINDS WITH GENERALLY
PARTLY CLOUDY SKIES AND DRY CONDITIONS PREVAIL OVER THE RIO GRANDE
VALLEY THIS AFTERNOON. TEMPERATURES HAVE WARMED TO NEAR NORMAL
VALUES TODAY. A HIGH PRESSURE RIDGE EXTENDING INTO DEEP SOUTH TEXAS
WILL CONTINUE PRODUCING LIGHT SOUTHEASTERLY WINDS DURING THE
OVERNIGHT PERIODS AND MODERATE SOUTHEASTERLY WINDS DURING THE
AFTERNOONS AND EVENINGS FOR THE NEXT FEW DAYS. AN UPPER LEVEL LOW
PRESSURE SYSTEM WILL MOVE ACROSS CENTRAL TEXAS THURSDAY AND FRIDAY
INCREASING THE CHANCES FOR SHOWERS AND ISOLATED THUNDERSTORMS AT
TIMES OVER THE CWA THROUGH SATURDAY. A FEW OF THE ISOLATED
THUNDERSTORMS COULD BECOME STRONG OR SEVERE THURSDAY INTO THURSDAY
NIGHT. DRY CONDITIONS WILL PREVAIL OVER THE RIO GRANDE VALLEY SUNDAY
THROUGH THE END OF NEXT WEEK. TEMPERATURES WILL REMAIN NEAR NORMAL
TO SLIGHTLY ABOVE NORMAL THROUGH THE END OF THE FORECAST PERIOD.
&&

.MARINE...FAIRLY BENIGN MARINE CONDITIONS ARE EXPECTED TO CONTINUE
FOR THE NEXT SEVERAL DAYS.  AN UPPER-LEVEL LOW PASSING TO THE NORTH
WILL CAUSE A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS THURSDAY AND
FRIDAY.  DRY CONDITIONS WILL RETURN THIS WEEKEND AS HIGH PRESSURE
RE-BUILDS OVER THE REGION.
&&

.AVIATION...GENERALLY VFR TO MVFR CONDITIONS SHOULD PREVAIL
OVERNIGHT.  WINDS WILL GENERALLY BE LIGHT OUT OF THE SOUTHEAST.  A
SLIGHT CHANCE OF THUNDERSTORMS IS EXPECTED THURSDAY AFTERNOON AND
EVENING.  SOME OF THE STORMS COULD BE STRONG...WITH HAIL AND BRIEF
GUSTY WINDS POSSIBLE.
&&

.PRELIMINARY POINT TEMPS/POPS...
BAYVIEW/PORT ISABEL  72  84  71  85  69 /  10  20  20  20  00
BROWNSVILLE          71  85  70  88  68 /  10  20  20  20  00
HARLINGEN            70  86  70  88  68 /  10  20  20  20  00
MCALLEN              71  88  70  90  69 /  20  20  20  20  00
RIO GRANDE CITY      70  90  70  92  69 /  30  20  20  20  00
SOUTH PADRE ISLAND   75  82  75  82  73 /  10  20  20  20  00
&&

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

THIS PRODUCT IS ALSO AVAILABLE ON OUR INTERNET WEB PAGE AT:
HTTP://WWW.SRH.NOAA.GOV/BRO

SYNOPTIC/GRIDS....58
MARINE/AVIATION...68
MESOSCALE...ABBOTT

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE BROWNSVILLE TX
900 PM CDT WED MAY 9 2007

TXZ248>257-101100-
ZAPATA-JIM HOGG-BROOKS-KENEDY-STARR-HIDALGO-INLAND WILLACY-
INLAND CAMERON-COASTAL WILLACY-COASTAL CAMERON-
900 PM CDT WED MAY 9 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR DEEP SOUTH TEXAS.

.DAY ONE...REMAINDER OF TONIGHT

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS AFTER 11 PM WEDNESDAY
NIGHT...MAINLY IN ZAPATA..STARR AND JIM HOGG COUNTIES. UPPER
LEVEL WINDS COULD ALLOW A FEW STRONG TO SEVERE THUNDERSTORMS TO MOVE
INTO EASTERN COUNTIES INCLUDING THE MIDDLE AND LOWER RIO GRANDE
VALLEY AFTER MIDNIGHT. LARGE HAIL AND STRONG STRAIGHT LINE WINDS
WILL BE THE MAIN THREAT WITH ANY THUNDERSTORMS THAT DEVELOP.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THERE IS ANOTHER SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS DEEP
SOUTH TEXAS THURSDAY. SOME LINGERING STRONG TO SEVERE THUNDERSTORMS
FROM WEDNESDAY NIGHT COULD PERSIST INTO THURSDAY MORNING WITH
REDEVELOPMENT OF POTENTIAL STRONG TO SEVERE THUNDERSTORMS LATER
THURSDAY AFTERNOON AND EVENING. CENTRAL AND EASTERN AREAS OF THE
RIO GRANDE VALLEY LOOK TO BE IN THE MAIN THREAT REGIONS. LARGE
HAIL AND STRONG WINDS WILL BE THE MAIN SEVERE WEATHER ELEMENTS.

.SPOTTER INFORMATION STATEMENT...

ALTHOUGH SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME...IF
THE SEVERE THREAT INCREASES ACTIVATION MAY BE NECESSARY.

PHILO