Severe Thunderstorm Warning 5, NWS Brownsville, TX

000 
WWUS54 KBRO 122344
SVSBRO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
543 PM CST TUE FEB 12 2008

TXC061-130000-
/O.CON.KBRO.SV.W.0005.000000T0000Z-080213T0000Z/
CAMERON TX-
543 PM CST TUE FEB 12 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CST
FOR NORTHWESTERN CAMERON COUNTY...

AT 540 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING NICKEL
SIZE HAIL.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM LA 
LEONA TO COMBES...MOVING SOUTHEAST AT 20 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  HARLINGEN AND LAS YESCAS BY 550 PM CST...
  LAS YESCAS...LANTANA AND LA TINA BY 555 PM CST...
  LOZANO BY 600 PM CST...

THE STRONGEST CELL WAS CROSSING THE COUNTY LINE NEAR MONTE GRANDE AT 
545 PM.  HOWEVER...OTHER STRONG CELLS CONTINUE MOVING TOWARD 
HARLINGEN AND ARE CAPABLE OF GUSTY WINDS IN EXCESS OF 40 MPH AND 
SOME LARGE HAIL.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE 
IMMEDIATELY FOR LARGE HAIL AND POTENTIALLY DAMAGING WINDS.
MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING BUT AWAY 
FROM WINDOWS.

LAT...LON 2622 9785 2630 9765 2630 9754 2633 9751
      2632 9746 2625 9736 2618 9752 2615 9775
      2615 9786
TIME...MOT...LOC 2343Z 302DEG 21KT 2629 9743 2621 9770

$$

BSG

000 
WWUS54 KBRO 122356
SVSBRO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
554 PM CST TUE FEB 12 2008

TXC061-130004-
/O.EXP.KBRO.SV.W.0005.000000T0000Z-080213T0000Z/
CAMERON TX-
554 PM CST TUE FEB 12 2008

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CAMERON COUNTY
EXPIRES AT 600 PM CST...

THE LINE OF STORMS WHICH HAS AFFECTED AREAS FROM HARLINGEN TO LA 
FERIA HAS BEGUN TO WEAKEN. THEREFORE...THE WARNING WILL BE ALLOWED 
TO EXPIRE AT 6 PM.

HOWEVER...RESIDENTS OF SAN BENITO...LOS FRESNOS...BAYVIEW...AND 
HARLINGEN CAN STILL EXPECT TORRENTIAL RAINS REDUCING VISIBILITY 
BELOW 1 MILE FOR 10 MINUTES OR LESS...WIND GUSTS TO 30 MPH...AND PEA 
SIZED HAIL UNTIL 615 OR 630 PM.

LAT...LON 2622 9785 2630 9765 2630 9754 2633 9751
      2632 9746 2625 9736 2618 9752 2615 9775
      2615 9786
TIME...MOT...LOC 2354Z 302DEG 21KT 2626 9737 2618 9764

$$

BSG

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BROWNSVILLE TX
131 PM CST TUE FEB 12 2008

.DISCUSSION...SATELLITE AND RADAR IMAGES INDICATE THE LINE OF
SHOWERS AND THUNDERSTORMS OVER SOUTHEAST TEXAS CONTINUES TO MOVE
SOUTHWARD TOWARDS THE UPPER TX COAST BUT NOT MUCH DEVELOPMENT
TOWARDS THE COASTAL BEND. IT APPEARS THE WARMER TEMPERATURES AT
850MB CONTINUE TO PROVIDE A LID FOR CONVECTION TO DEVELOP ACROSS
THE RIO GRANDE PLAINS BUT THE FRONT SHOULD ERODE THE CAP AND SOME
ISOLATED TO SCATTERED SHOWERS WITH AN ISOLATED THUNDERSTORM OR TWO
SHOULD STILL DEVELOP ACROSS DEEP SOUTH TX LATE THIS AFTERNOON INTO
EARLY EVENING BEFORE THE FRONT MOVES THROUGH THE AREA. WILL KEEP A
SLIGHT CHANCE OF RAIN FOR EARLY EVENING. OTHERWISE...A DRYING AND
COOLING TREND IS EXPECTED TONIGHT INTO WEDNESDAY AS HIGH PRESSURE
BUILDS INTO THE CWA IN THE WAKE OF THE FRONT. RETURN FLOW IS
EXPECTED TO DEVELOP LATE WEDNESDAY WITH LOW PRESSURE DEVELOPING
OVER THE CENTRAL PLAINS. MOISTURE IS EXPECTED TO INCREASE THURSDAY
WITH LOW PRESSURE ACROSS WEST TX AS A 500MB TROUGH ACROSS THE
WESTERN UNITED STATES APPEARS TO CUT-OFF AS A LOW/TROUGH AND DROP
SOUTHWARD ACROSS WEST TX AND NORTHERN MEXICO FRIDAY INTO SATURDAY.
ANOTHER COLD FRONT IS PROGGED TO MOVE THROUGH THE LOWER RIO GRANDE
VALLEY FRI AFTERNOON BUT MOST OF THE CONVECTION WILL LIKELY BE
ACROSS SOUTHEAST TX SIMILAR TO TODAYS EVENT. THIS WILL BRING
ANOTHER SHOT OF COOLER AIR BUT WITH THE 500MB TROUGH/LOW HANGING
BACK TO THE WEST...THE MODELS ARE FAIRLY CONSISTENT WITH
OVERRUNNING DEVELOPING SATURDAY AS WELL AS THE POSSIBILITY OF
ELEVATED CONVECTION. THIS WILL LIKELY CONTINUE UNTIL THE 500MB LOW
MOVES EASTWARD ACROSS SOUTHWEST TX SATURDAY BRINGING AN END TO
RAIN CHANCES FROM WEST TO EAST LATE SATURDAY AS AN AREA OF LOW
PRESSURE DEVELOPS OVER THE WESTERN GULF OF MEXICO AND LIFTS
NORTHWARD SAT NIGHT. HIGH PRESSURE BUILDING INTO SOUTH TX SUNDAY
WITH NORTHWEST FLOW ALOFT SHOULD PROVIDE DRY WEATHER INTO EARLY
NEXT WEEK WITH TEMPERATURES WARMING THROUGH THE REST OF THE PERIOD
AS RETURN FLOW DEVELOPS LATE MONDAY.
&&

.AVIATION...PREVAIL VFR CONDITIONS ARE EXPECTED FOR THE NEXT 24
HOURS WITH TEMPO MVFR CONDITIONS IN CIGS/VSBYS IN ANY SHOWERS OR
THUNDERSTORMS.  WINDS WILL BE MODERATE TO STRONG FROM THE SOUTHEAST
THIS AFTERNOON AHEAD OF A COLD FRONT THAT WILL MOVE THROUGH THE AREA
LATER TODAY.  MODERATE NORTH WINDS WILL PREVAIL LATE THIS AFTERNOON
AND TONIGHT IN THE WAKE OF THE COLD FRONT.
&&

.MARINE...BUOY020 REPORTED SOUTH TO SOUTHEAST WINDS AT 12 TO 16
KNOTS AND SEAS 4.6 FEET WITH AN 8 SECOND PERIOD. WINDS AND SEAS ARE
STILL BELOW SMALL CRAFT ADVISORY CRITERIA OVER THE OPEN WATERS.
THE COLD FRONT IS PRESENTLY OVER SOUTH TEXAS AND WILL MOVE THROUGH
THE COASTAL WATERS OF DEEP SOUTH TEXAS LATE THIS AFTERNOON.
THEREFORE WILL NOT BEGIN THE SMALL CRAFT ADVISORY ABOUT 4 PM THIS
AFTERNOON.  WINDS HAVE ALREADY REACHED SMALL CRAFT ADVISORY CRITERIA
OVER THE LAGUNA SO WILL BEGIN THE SMALL CRAFT ADVISORY FOR THAT AREA
AT THIS TIME.   WINDS SHIFT BACK TO THE SOUTHEAST BY MIDNIGHT
THURSDAY AS HIGH PRESSURE MOVES TO THE EAST. WINDS LATER IN THE WEEK
WILL BE GUSTY IN RESPONSE TO A SECOND APPROACHING COLD FRONT.
&&

.PRELIMINARY POINT TEMPS/POPS...
BAYVIEW/PORT ISABEL  54  70  57  77 /  30   0   0   0
BROWNSVILLE          54  72  57  77 /  20   0   0   0
HARLINGEN            52  72  54  79 /  20   0   0   0
MCALLEN              52  75  54  79 /  20   0   0   0
RIO GRANDE CITY      49  76  53  79 /  20   0   0   0
SOUTH PADRE ISLAND   55  67  59  76 /  30   0   0   0
&&

.BRO WATCHES/WARNINGS/ADVISORIES...
TX...NONE.
GM...SMALL CRAFT ADVISORY UNTIL 9 PM CST THIS EVENING FOR GMZ130-132-
     135.

     SMALL CRAFT ADVISORY UNTIL 3 AM CST WEDNESDAY FOR GMZ150-155-170-
     175.
&&

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

PUBLIC/GRIDS...61
MARINE/AVIATION...65
MESO...MARTINEZ

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE BROWNSVILLE TX
340 PM CST TUE FEB 12 2008

TXZ248>257-131200-
ZAPATA-JIM HOGG-BROOKS-KENEDY-STARR-HIDALGO-INLAND WILLACY-
INLAND CAMERON-COASTAL WILLACY-COASTAL CAMERON-
340 PM CST TUE FEB 12 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR DEEP SOUTH TEXAS.

.DAY ONE...REST OF TODAY AND TONIGHT

A COLD FRONT WILL MOVE THROUGH DEEP SOUTH TEXAS AND THE ADJACENT
LOWER TEXAS COASTAL WATERS THIS AFTERNOON. THE PASSAGE OF THIS COLD
FRONT MAY PRODUCE SOME ISOLATED SEVERE THUNDERSTORMS ACROSS THE
EASTERN PORTIONS OF DEEP SOUTH TEXAS THROUGH 8 PM. THE COUNTIES WITH
THE BEST CHANCES FOR SEVERE WEATHER THIS AFTERNOON WILL BE KENEDY...
WILLACY...HIDALGO AND CAMERON. THE MAIN THREAT FROM ANY SEVERE
THUNDERSTORMS THAT FORM WILL BE LARGE HAIL AND DAMAGING THUNDERSTORM
WINDS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

A SECOND COLD FRONT IS EXPECTED LATE IN THE WEEK OR EARLY
SATURDAY. WINDS WILL AGAIN BE GUSTY AFTER THE FRONT PASSES...WITH
SMALL CRAFT ADVISORIES LIKELY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED IN CAMERON...WILLACY...KENEDY AND
HIDALGO COUNTIES THIS AFTERNOON.

SPEECE

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
404 PM CST TUE FEB 12 2008

TXZ253>257-130030-
HIDALGO-INLAND WILLACY-INLAND CAMERON-COASTAL WILLACY-
COASTAL CAMERON-
INCLUDING THE CITIES OF...MCALLEN...EDINBURG...PHARR...MISSION...
WESLACO...RAYMONDVILLE...BROWNSVILLE...HARLINGEN...
PORT MANSFIELD...PORT ISABEL...SOUTH PADRE ISLAND...
LAGUNA HEIGHTS...LAGUNA VISTA
404 PM CST TUE FEB 12 2008

...DEVELOPING LINE OF STRONG TO SEVERE THUNDERSTORMS HEADED FOR
PORTIONS OF THE LOWER RIO GRANDE VALLEY LATE THIS AFTERNOON...

AT 4 PM CST...A SQUALL LINE EXTENDED FROM THE HIDALGO WILLACY
KENEDY COUNTY LINE ABOUT 10 MILES WEST OF HIGHWAY 77...NORTHEAST
TO PADRE ISLAND AND INTO THE GULF OVER AND EAST OF THE CENTRAL
KENEDY COUNTY COAST.

THE LINE WAS EASING SOUTH TOWARD THE LOWER RIO GRANDE VALLEY AT
AROUND 15 MPH...AND WILL REACH NORTHERN WILLACY COUNTY...INCLUDING
YTURRIA AND PORT MANSFIELD...BEFORE 430 PM...AND NORTHEASTERN
HIDALGO COUNTY...INCLUDING SAN MANUEL...AROUND THE SAME TIME. THE
REST OF WILLACY COUNTY WILL BE AFFECTED BETWEEN 430 AND 515 PM.

THE ATMOSPHERE REMAINS QUITE UNSTABLE SOUTHWARD INTO EASTERN
HIDALGO AND ALL OF CAMERON COUNTY...AND THE LINE MAY HOLD TOGETHER
AFTER 515 PM AS IT APPROACHES THE MORE POPULATED AREAS ALONG
HIGHWAYS 83 AND 77...INCLUDING HARLINGEN...LA
FERIA...MERCEDES...AND BROWNSVILLE.

RESIDENTS OF THE THESE AND OTHER AREAS CAN EXPECT A 10 TO 30
MINUTE PERIOD OF TORRENTIAL RAINS...WIND GUSTS OF 40 MPH OR
MORE...AND HAIL. STRONGER CELLS WITHIN THE LINE WILL BE CAPABLE OF
PRODUCING LARGE HAIL OF PENNY SIZE OR GREATER AS WELL AS POSSIBLE
DAMAGING WIND GUSTS OF 50 MPH OR GREATER.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA OUTLETS FOR
UPDATES...INCLUDING POSSIBLE SEVERE WEATHER WARNINGS...FROM THE
NATIONAL WEATHER SERVICE IN BROWNSVILLE.

&&

FOR MORE INFORMATION...PLEASE SURF TO HTTP://WEATHER.GOV/RGV.

BSG

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
424 PM CST TUE FEB 12 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0408 PM     HAIL             13 N RAYMONDVILLE       26.67N 97.78W
02/12/2008  E0.50 INCH       KENEDY             TX   EMERGENCY MNGR

            REPORT OF MARBLE SIZE HAIL APPROXIMATELY 10 MILES NORTH
            OF THE KENEDY WILLACY COUNTY LINE. HAIL COVERING THE
            GROUND LASTING FOR AT LEAST 10 MINUTES.

&&

BSG

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
505 PM CST TUE FEB 12 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0445 PM     HAIL             PORT MANSFIELD          26.55N 97.43W
02/12/2008  E1.75 INCH       WILLACY            TX   CO-OP OBSERVER

            REPORTED BY HUSBAND OF OBSERVER AT RESIDENCE NEAR CENTER
            OF TOWN ON COPANO ROAD.

0450 PM     TSTM WND GST     PORT MANSFIELD          26.55N 97.43W
02/12/2008  M41.00 MPH       WILLACY            TX   CO-OP OBSERVER

            ALSO REPORTED MARBLE SIZE HAIL...0.50 INCH IN
            DIAMETER...AT HARBORMASTER OFFICE LOCATION

&&

BSG