Red Flag Warning 23, NWS Brownsville, TX

000 
WWUS84 KBRO 241226
RFWBRO

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE BROWNSVILLE TX
726 AM CDT FRI APR 24 2009

...INCREASED THREAT OF ERRATIC WILDFIRE BEHAVIOR EXPECTED TODAY...

.SURFACE LOW PRESSURE OVER WEST TEXAS AND HIGH PRESSURE OVER THE
EASTERN GULF OF MEXICO WILL CONTINUE TO PROVIDE A STRONG PRESSURE
GRADIENT ACROSS DEEP SOUTH TEXAS TODAY. THIS WILL PROVIDE BREEZY
TO WINDY CONDITIONS ACROSS THE EASTERN PORTIONS OF DEEP SOUTH
TEXAS LATER THIS MORNING THROUGH EARLY THIS EVENING. LOWER
RELATIVE HUMIDITY VALUES OVER THE WESTERN PORTIONS OF DEEP SOUTH
TEXAS WILL RESULT IN CRITICAL FIRE WEATHER CONDITIONS ACROSS
CENTRAL PORTIONS OF DEEP SOUTH TEXAS TODAY. DRY FUELS FROM THE
LACK OF RAINFALL OVER THE PAST SIX MONTHS WILL CONTRIBUTE TO THE
WILDFIRE POTENTIAL.

TXZ249-250-252-253-242030-
/O.CON.KBRO.FW.W.0023.090424T1500Z-090425T0000Z/
JIM HOGG-BROOKS-STARR-HIDALGO-
726 AM CDT FRI APR 24 2009

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS
EVENING...

A RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING.

SOUTHEAST TO SOUTH WINDS AT 20 FEET ABOVE THE SURFACE WILL REACH
20 TO 25 MPH OR HIGHER WITH STRONGER GUSTS FROM LATER THIS
MORNING THROUGH THE EARLY EVENING HOURS. THE COMBINATION OF THESE
WINDS...ALONG WITH REDUCED DAYTIME RELATIVE HUMIDITY VALUES AND
DRY FUELS WILL PRODUCE SEVERAL HOURS OF CRITICAL FIRE WEATHER
CONDITIONS. FIRE DANGER ACROSS THE REGION REMAINS VERY HIGH DUE
TO THE RECENT DROUGHT CONDITIONS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS CRITICAL FIRE WEATHER CONDITIONS ARE
OCCURRING NOW...OR WILL SHORTLY. THESE CONDITIONS INCLUDE
SUSTAINED 20 FOOT WINDS OF 25 MPH OR GREATER AND CURED FUELS...OR
THE COMBINATION OF RELATIVE HUMIDITY BELOW 35 PERCENT FOR 2 HOURS
OR MORE AND SUSTAINED 20 FOOT WINDS OF 25 MPH OR HIGHER WHEN
FUELS ARE NOT CURED. THESE CONDITIONS WILL CREATE EXPLOSIVE FIRE
GROWTH POTENTIAL.

&&

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BROWNSVILLE TX
304 AM CDT FRI APR 24 2009

.DISCUSSION...SATELLITE AND RADAR IMAGES INDICATED THUNDERSTORMS
ACROSS WEST TEXAS AND THE NAM PROGS CONVECTION DEVELOPING ACROSS
CENTRAL AND SOUTHWEST TX THIS AFTERNOON AS A WEAK 500MB SHORTWAVE
TROUGH MOVES ACROSS WEST CENTRAL TX. WILL MENTION A SLIGHT CHANCE
OF THUNDERSTORMS ACROSS THE EXTREME NORTHERN PORTIONS OF THE CWA
TODAY. OTHERWISE...ANOTHER WINDY DAY IS EXPECTED FOR DEEP SOUTH TX
TODAY AS THE PRESSURE GRADIENT REMAINS STRONG ACROSS THE LOWER
TEXAS COAST AND NOCTURNAL LOW LEVEL JET IS EXPECTED TO MIX DOWN
WITH DIURNAL HEATING LATER THIS MORNING. KBRO 88D RADAR VAD WINDS
INDICATED 63KTS AT 5000FT AND IF THIS IS 20KTS TOO HIGH...THEN
40KTS MIXING DOWN WARRANTS ISSUING A WIND ADVISORY TODAY FOR THE
COASTAL COUNTIES AND INLAND ACROSS HIDALGO COUNTY. BREEZY TO WINDY
CONDITIONS TO PERSIST THROUGH THE WEEKEND WITH LOW PRESSURE ACROSS
WEST TX AND HIGH PRESSURE RIDGE ACROSS THE SOUTHEAST UNITED STATES
KEEPS THE GRADIENT TIGHT ACROSS SOUTH TX. THE GFS CONTINUES TO
PROG THUNDERSTORMS ACROSS OKLAHOMA INTO NORTH TX MONDAY WITH A
WEAK FRONTAL BOUNDARY DRAPED ACROSS THE SOUTHERN PLAINS. WITH A
500MB TROUGH ACROSS THE WESTERN U.S. MONDAY THROUGH
WEDNESDAY...VERY WARM AND HUMID CONDITIONS ARE EXPECTED TO PERSIST
THROUGH THE REST OF THE PERIOD WITH RAIN CHANCES REMAINING WELL TO
THE NORTH OF SOUTH TX. NO RELIEF FROM THE CURRENT DROUGHT
CONDITIONS ACROSS DEEP SOUTH TX IS EXPECTED THROUGH NEXT WEEK.
&&

.AVIATION...MVFR CONDITIONS WITH MODERATE AND GUSTY SOUTHEASTERLY
WINDS AND LLWS POSSIBLE FM 08 TO 14Z. VFR CONDITIONS WILL PREVAIL
ACROSS THE REGIONAL AERODROMES AFTER SUNRISE WITH SUSTAINED
SOUTHEAST WINDS OF 30 MPH WITH GUSTS OVER 40 MPH POSSIBLE DURING
LATE MORNING AND AFTERNOON.
&&

.MARINE...AT 1 AM BUOY 20 REPORTED SOUTHEAST WINDS AT 19 KNOTS WITH
GUSTS TO 23 KNOTS AND SEAS AT 7 FEET WITH AN 7 SECOND PERIOD. STRONG
AND GUSTY SOUTH TO SOUTHEAST WINDS WILL CONTINUE ACROSS THE MARINE
AREAS OF DEEP SOUTH TEXAS THROUGH THIS WEEKEND. SMALL CRAFT
ADVISORIES CONTINUE ACROSS THE OFFSHORE GULF OF MEXICO COASTAL
WATERS THROUGH THIS EVENING AND WILL LIKELY BE NECESSARY THROUGH
THE WEEKEND. A SMALL CRAFT ADVISORY WILL BE IN EFFECT ACROSS THE
LAGUNA MADRE THIS MORNING THROUGH EARLY EVENING. THE WINDS WILL
DECREASE TO MODERATE LEVELS ACROSS THE LAGUNA MADRE DURING THE
OVERNIGHT PERIODS FOR THE NEXT FEW NIGHTS.
&&

.FIRE WEATHER...EVEN THOUGH RELATIVE HUMIDITIES WILL LIKELY NOT BE
LOW ENOUGH FOR RED FLAG WARNING CRITERIA ACROSS WESTERN PORTIONS
OF DEEP SOUTH TX...WILL GO AHEAD AND ISSUE A RED FLAG WARNING FOR
THE CENTRAL PORTIONS OF THE CWA AS 20FT WINDS SHOULD EXCEED
WARNING CRITERIA LATER THIS MORNING THROUGH EARLY THIS EVENING.
WILL ISSUE A FIRE DANGER STATEMENT FOR THE COASTAL SECTIONS MAINLY
FOR THE STRONG WINDS AS RH LEVELS SHOULD REMAIN WELL ABOVE WARNING
CRITERIA.
&&

.PRELIMINARY POINT TEMPS/POPS...
BAYVIEW/PORT ISABEL  87  74  86  75 /  10  10  10  10
BROWNSVILLE          88  74  88  74 /  10  10  10  10
HARLINGEN            90  72  90  72 /  10  10  10  10
MCALLEN              91  71  92  72 /  10  10  10  10
RIO GRANDE CITY      92  71  92  73 /  10  10  10  10
SOUTH PADRE ISLAND   84  75  84  76 /  10  10  10  10
&&

.BRO WATCHES/WARNINGS/ADVISORIES...
TX...RED FLAG WARNING FROM 10 AM THIS MORNING TO 7 PM CDT THIS
     EVENING FOR TXZ249-250-252-253.

     WIND ADVISORY FROM 11 AM THIS MORNING TO 6 PM CDT THIS EVENING
     FOR TXZ251-253>257.

GM...SMALL CRAFT ADVISORY FOR WINDS FROM 9 AM THIS MORNING TO 8 PM
     CDT THIS EVENING FOR GMZ130-132-135.

     SMALL CRAFT ADVISORY UNTIL 7 PM CDT THIS EVENING FOR GMZ150-155-
     170-175.
&&

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

61/58

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BROWNSVILLE TX
910 PM CDT THU APR 23 2009

GMZ130-132-135-150-155-170-175-TXZ248>257-241100-
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-ZAPATA-JIM HOGG-BROOKS-KENEDY-STARR-HIDALGO-INLAND WILLACY-
INLAND CAMERON-COASTAL WILLACY-COASTAL CAMERON-
910 PM CDT THU APR 23 2009

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

.DAY ONE...TONIGHT.

SMALL CRAFT ADVISORIES REMAIN IN EFFECT ACROSS THE OFFSHORE GULF
OF MEXICO COASTAL WATERS DUE TO MODERATE TO STRONG SOUTH TO
SOUTHEAST WINDS AND BUILDING SEAS. THERE IS A MODERATE RISK FOR
RIP CURRENTS ALONG THE BEACHES OF SOUTH PADRE ISLAND AND BOCA CHICA
DUE TO THE WINDS AND BUILDING SEAS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

MODERATE TO STRONG SOUTH TO SOUTHEASTERLY WINDS ARE LIKELY TO
CONTINUE THROUGH THIS WEEKEND. THERE IS A FIRE WEATHER WATCH IN
EFFECT FOR FRIDAY. THE WINDS COMBINED WITH ABUNDANT DRY AND CURED
FUELS WILL ENHANCE THE RISK FOR WILDFIRES THROUGH THE PERIOD.
WINDY CONDITIONS IN PLACE ACROSS INLAND AREAS COULD RESULT IN THE
NEED FOR WIND ADVISORIES ON FRIDAY.

SMALL CRAFT ADVISORIES ARE IN EFFECT ACROSS THE OFFSHORE GULF OF
MEXICO COASTAL WATERS THROUGH FRIDAY EVENING. MODERATE TO STRONG
SOUTH TO SOUTHEAST WINDS ACROSS THE LOWER TEXAS COASTAL WATERS
ALONG WITH BUILDING SEAS WILL LIKELY REQUIRE THE NEED FOR SMALL
CRAFT ADVISORIES THROUGH THIS WEEKEND. THERE WILL BE A MODERATE
RISK FOR RIP CURRENTS AT THE BEACHES OF SOUTH PADRE ISLAND AND
BOCA CHICA ON FRIDAY INTO THE WEEKEND DUE TO INCREASING WINDS AND
BUILDING SEAS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

MARTIN