Severe Thunderstorm Warning 5, NWS Brownsville, TX

838 
WWUS54 KBRO 102341
SVSBRO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
641 PM CDT FRI APR 10 2015

TXC427-110015-
/O.CON.KBRO.SV.W.0005.000000T0000Z-150411T0015Z/
STARR TX-
641 PM CDT FRI APR 10 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM CDT
FOR SOUTHEASTERN STARR COUNTY...

AT 639 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60
MPH. THIS STORM WAS LOCATED NEAR LA VICTORIA...OR 11 MILES NORTH OF
LOS EBANOS...MOVING NORTHEAST AT 10 MPH.

THIS SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
SOUTHEASTERN STARR COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE HAIL...
DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM.  MOVE INDOORS
IMMEDIATELY. LIGHTNING IS ONE OF NATURES LEADING KILLERS. REMEMBER...
IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY
LIGHTNING.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 2644 9869 2652 9855 2644 9849 2633 9855
TIME...MOT...LOC 2339Z 231DEG 8KT 2641 9857 

$$

BIRCHFIELD

507 
WWUS54 KBRO 102352
SVSBRO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
652 PM CDT FRI APR 10 2015

TXC427-110001-
/O.CAN.KBRO.SV.W.0005.000000T0000Z-150411T0015Z/
STARR TX-
652 PM CDT FRI APR 10 2015

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN STARR COUNTY IS
CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR 
PROPERTY. THEREFORE THE WARNING HAS BEEN CANCELLED. HOWEVER 
TORRENTIAL RAIN IS STILL POSSIBLE WITH THIS THUNDERSTORM.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
BROWNSVILLE .

LAT...LON 2644 9869 2652 9855 2644 9849 2633 9855
TIME...MOT...LOC 2347Z 231DEG 8KT 2643 9855 

$$

BIRCHFIELD

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BROWNSVILLE TX
301 PM CDT FRI APR 10 2015

.SHORT TERM /NOW THROUGH SATURDAY NIGHT/...A WEAK MESOLOW REMAINS
CENTERED OVER NORTHERN STARR COUNTY THIS AFTERNOON WITH THE BEST
EVIDENCE OF A SYNOPTIC SCALE FRONT JUST SLIGHTLY NORTH OF THE
AREA. WEAK MOISTURE/TERMPERATURE GRADIENTS ARE PRESENT AT A FEW
LOCATIONS ACROSS THE CWA AND ANOTHER WEAK TROUGH/BOUNDARY IS
APPARENT SOUTH OF HIDALGO COUNTY STRETCHING ACROSS NORTHEASTERN
TAMAULIPAS FROM NORTH TO SOUTH. SURFACE MOISTURE IS NOT LACKING
WITH DEWPOINTS IN CAMERON AND HIDALGO COUNTY IN THE MID 70S AND
FURTHER INLAND IN THE LOWER 70S. PACIFIC MOISTURE CONTINUES TO
STREAM IN ON WESTERLY MID AND UPPER LEVEL WINDS AND THE ATMOPSHERE
HAS RELATIVELY HIGH WATER CONTENT ON THE WHOLE YIELDING PRECIP
WATER VALUES AROUND 1.8 TO 1.9 INCHES. BOUNDARY LAYER PARCELS ARE
RATHER UNSTABLE WITH MLCAPE VALUES AROUND 2000 J/KG BUT THERE
LIKELY IS A RESIDUAL CAPPING INVERSION AROUND 925MB THAT IS
HOLDING BACK SURFACE PARCELS THAT ARE CONVECTING AMID THE JUICY
SURFACE AIR AND WEAK RESIDUAL BOUNDARIES. UPPER LEVEL SPEED
CONVERGENCE AND WEAK DIRECTIONAL DIFFLUENCE IS OCCURING OVER THE
CWA LIKELY LEADING TO A VERY SLIGHT NET POSITIVE IN TERMS OF LARGE
SCALE ASCENT. WESTERLY WINDS AT 750MB ARE PROBABLY MIXING IN A
LITTLE DRY AIR THAT WILL ENTRAIN INTO NEW UPDRAFTS AND MAKE
CONVECTIVE DEVELOPMENT EVEN MORE CONDITIONAL.

FOR THE REST OF THIS AFTERNOON AS OVERCAST BREAKS UP ACROSS THE
AREA AND TEMPERATURES RISE I EXPECT WE WILL SEE REDEVELOPMENT OF
AT LEAST SCATTERED SHOWERS AND THUNDERSTORMS. SOME OF THEM COULD
BE FAIRLY INTENSE AND ANY ACTIVITY WILL ALMOST CERTAINLY PRODUCE
HEAVY RAINFALL WHILE MOVING EAST AT ABOUT 15 MPH SO FLOODING/FLASH
FLOODING REMAINS A CONCERN ESPECIALLY IF ACTIVITY GETS GOING OVER
URBAN AREAS. DAMAGING WIND/MARGINAL SEVERE HAIL IS ALSO POSSIBLE
IN THE STRONGER STORMS.

ACTIVITY SHOULD TAPER OFF TONIGHT/THIS EVENING BEFORE BEING ABLE TO
RESTART TOMORROW IN THE LATE MORNING AND AFTERNOON. LARGE SCALE
ASCENT WILL BE PRETTY NEUTRAL BUT DAYTIME HEATING WILL LIKELY HELP
GET AT LEAST A FEW UPDRAFTS GOING IN THE AFTERNOON. WITH MORE
MODERATE INSTABILITY PRESENT THE HAIL/WIND THREAT APPEARS LOWER BUT
HEAVY RAINFALL CAN BE EXPECTED FROM ANY STORMS THAT MANAGE TO GET
GOING. UPPER DIFFLUENCE WILL BE SLIGHTLY BETTER SATURDAY EVENING AND
KEPT A CHANCE OF SHOWERS AND STORMS IN THE FORECAST. /68-JGG/

.LONG TERM /SUNDAY THROUGH THURSDAY/...MAIN FEATURES REMAIN THE
SAME. THE UPPER DISTURBANCE WILL MOVE FROM NORTHWEST MEXICO ACROSS
THROUGH NORTH TEXAS SUNDAY TO MONDAY...KEEPING THINGS UNSETTLED
OVER THE CWA. A SURFACE FRONT WILL BE PULLED THROUGH THE CWA ON
TUESDAY AS THE UPPER LOW LIFTS OUT OVER OKLAHOMA...BUT IT WILL NOT
COMPLETELY CLEAR THE AREA OUT. IT WILL TAKE REINFORCING HIGH
PRESSURE ON THURSDAY TO FINISH THE JOB AND GET SOME DRIER AIR OVER
MOST OF THE AREA. HIGH TEMPERATURES WERE DRIFTED DOWN A SCOSCHE
DUE TO GOOD CLOUD COVER BUT REMAIN PRIMARILY IN THE 80 TO 85
DEGREE RANGE.

&&

.MARINE...
NOW THROUGH SATURDAY NIGHT...EASTERLY WINDS ARE FORECAST THROUGH
TODAY. SOUTHERLY WINDS PICK UP THROUGH SATURDAY MORNING AND
SATURDAY NIGHT WITH SPEEDS AND SEAS BECOMING MODERATE.

SUNDAY THROUGH TUESDAY...LIGHT TO MODERATE ONSHORE FLOW AND
MODERATE SEAS WILL CONTINUE AS WILL UNSETTLED WEATHER. A COLD
FRONT WILL ARRIVE ON TUESDAY...SHIFTING WINDS TO NORTH. RAW GFS
WINDS SUGGEST A POSSIBLE LOW END SMALL CRAFT ADVISORY CONDITIONS
TUESDAY AFTERNOON WITH 20 KT NORTH WINDS...BUT A MODEL BLEND IS
NOT QUITE AS ROBUST WITH THE WINDS AT THIS WRITING...MAINLY DUE
TO THE WEAKER ECMWF.

&&

.PRELIMINARY POINT TEMPS/POPS...
BAYVIEW/PORT ISABEL  73  82  75  83 /  30  30  20  30
BROWNSVILLE          73  83  75  84 /  40  30  20  20
HARLINGEN            72  85  75  87 /  40  30  20  30
MCALLEN              72  87  75  87 /  50  20  30  30
RIO GRANDE CITY      71  87  73  88 /  50  30  50  20
SOUTH PADRE ISLAND   72  77  73  79 /  30  30  20  20

&&

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

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

54/68/67

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BROWNSVILLE TX
857 AM CDT FRI APR 10 2015

TXZ248>257-111400-
ZAPATA-JIM HOGG-BROOKS-KENEDY-STARR-HIDALGO-INLAND WILLACY-
INLAND CAMERON-COASTAL WILLACY-COASTAL CAMERON-
857 AM CDT FRI APR 10 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF DEEP SOUTH
TEXAS.

.DAY ONE...TODAY AND TONIGHT

SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS ARE EXPECTED TO
DEVELOP THROUGH THE DAY TODAY. THUNDERSTORMS ARE EXPECTED TO BE
SLOW MOVING AND WILL PRODUCE LOCALLY HEAVY RAINFALL. AREAS OF
FLOODING WILL BE POSSIBLE. THERE IS AN ADDITIONAL...SMALLER
RISK...OF HAIL TO AROUND THE SIZE OF QUARTERS AND WIND GUSTS UP TO
AROUND 60 MPH THAT MAY OCCUR WITH THE STRONGEST THUNDERSTORMS
TODAY.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

ADDITIONAL ROUNDS OF THUNDERSTORMS WILL BE POSSIBLE SATURDAY
THROUGH MONDAY...ESPECIALLY IN THE AFTERNOON. AREAS OF FLOODING IN
HEAVY RAINFALL WILL BE POSSIBLE WITH A CONTINUED SMALL RISK FOR
LARGE HAIL AND BRIEF DAMAGING WINDS. THE FLOODING/SEVERE WEATHER
RISK IS GENERALLY HIGHER WEST OF HIGHWAY 281/INTERSTATE 69 C.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MAY BE REQUESTED LATER TODAY AND AGAIN EACH
AFTERNOON THROUGH MONDAY.

GMZ130-132-135-150-155-170-175-111400-
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-
857 AM CDT FRI APR 10 2015

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

.DAY ONE...TODAY AND TONIGHT

A FEW THUNDERSTORMS ARE POSSIBLE TONIGHT.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A FEW THUNDERSTORMS ARE POSSIBLE SUNDAY AND MONDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUESTED TODAY AND EACH AFTERNOON
THROUGH TUESDAY.

JGG

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
211 PM CDT FRI APR 10 2015

TXZ250-102000-
BROOKS TX-
211 PM CDT FRI APR 10 2015

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN JIM HOGG AND NORTHERN
BROOKS COUNTIES UNTIL 300 PM CDT...

AT 210 PM CDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR LA GLORIA TO 12 MILES
NORTHEAST OF PUESTA DEL SOL AIRPORT...AND MOVING EAST AT 25 MPH.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
FALFURRIAS...LA COLONIA PARK...FALFURRIAS FIRE STATION...FALFURRIAS
JUNIOR HIGH SCHOOL...AIRPORT ROAD ADDITION...PLEASANT PARK...BROOKS
COUNTY AIRPORT...FLOWELLA...HIDALGO CITY PARK...CANTU ADDITION AND
BROOKS COUNTY DETENTION CENTER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 2726 9799 2710 9799 2705 9805 2698 9842
      2704 9842 2726 9812
TIME...MOT...LOC 1910Z 254DEG 23KT 2727 9807 2703 9839

54

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
623 PM CDT FRI APR 10 2015

TXZ252-110000-
STARR TX-
623 PM CDT FRI APR 10 2015

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN HIDALGO AND
SOUTHEASTERN STARR COUNTIES UNTIL 700 PM CDT...

AT 621 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
NEAR LA VICTORIA...OR 5 MILES NORTHEAST OF GARCIASVILLE...MOVING
NORTHEAST AT 10 MPH.

NICKEL SIZE HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
LA VICTORIA.

LAT...LON 2639 9874 2653 9862 2646 9849 2629 9857
TIME...MOT...LOC 2321Z 225DEG 9KT 2639 9864

BIRCHFIELD