Severe Thunderstorm Warning 12, NWS Brownsville, TX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BROWNSVILLE TX
245 AM CDT MON MAY 5 2008

.DISCUSSION...A WEAK COLD FRONT HAS STALLED JUST NORTH OF DEEP SOUTH
TEXAS TRIGGERING OFF SOME SHOWERS AND THUNDERSTORMS.  MOST OF THE
SHOWERS AND THUNDERSTORMS WILL BE NORTH OF DEEP SOUTH TEXAS TODAY.
ANOTHER MINOR DISTURBANCE WILL MOVE JUST NORTH OF DEEP SOUTH TEXAS
TONIGHT CAUSING SHOWERS AND THUNDERSTORMS ONCE AGAIN.  WILL CONTINUE
TO HAVE LOW POPS FOR THE NEXT FEW DAYS AS A RIDGE OF HIGH PRESSURE
CONTINUES TO DOMINATE THE AREA.  BRO SOUNDING LAST NIGHT SHOWED A
PRECIP WATER OF 1.73 AND A K-INDEX OF 21.  TEMPERATURES WILL SLOWLY
WARM TO ABOVE NORMAL READINGS BY THE MIDDLE OF THE WEEK WITH A WARM
SOUTHEAST FLOW OF AIR INFLUENCING THE AREA.
&&

.MARINE...BUOY 42020 REPORTS MODERATE ESE WINDS AND SEAS AROUND 5
FEET EARLY THIS MORNING. HIGH PRESSURE OVER THE GULF OF MEXICO WILL
INTERACT WITH LOW PRESSURE OVER WEST TEXAS TO TIGHTEN THE GRADIENT
AND PRODUCE MODERATE TO FRESH WINDS ALONG THE LOWER TEXAS COAST.
ALMOST CONTINUOUS SMALL CRAFT EXERCISE CAUTION CONDITIONS ARE LIKELY
IN THE SHORT TERM. SMALL CRAFT ADVISORY CONDITIONS MAY DEVELOP
TUESDAY NIGHT THROUGH THURSDAY MORNING AS STORM SYSTEMS IN THE
PLAINS DEEPEN THE LOW PRESSURE UPSTREAM. MARINE CONDITIONS WILL
IMPROVE SLIGHTLY LATE IN THE WEEK AS LOW PRESSURE PLAYS A BIGGER AND
ROLE MORE DIRECTLY OVER DEEP SOUTH TEXAS...ALLOWING THE GRADIENT TO
RELAX. EXERCISE CAUTION TO MARGINAL SMALL CRAFT ADVISORY CONDITIONS
WILL STILL BE POSSIBLE HOWEVER. FINALLY...A COLD FRONT WILL PUSH
SOUTH INTO DEEP SOUTH TEXAS LATE NEXT WEEKEND. WINDS WILL SHIFT TO
EAST AND NORTHEAST NEXT SUNDAY NIGHT OR MONDAY MORNING. SMALL CRAFT
ADVISORY CONDITIONS ARE POSSIBLE WITH THE FRONT AS WINDS INCREASE.
HIGH PRESSURE WILL QUICKLY SHIFT EAST IN THE WAKE OF THE FRONT
HOWEVER...WITH A RETURN TO MODERATE SOUTHEAST WINDS BY NEXT MONDAY
AFTERNOON.
&&

.AVIATION...MVFR CEILINGS WILL CONTINUE TO DEVELOP AND AFFECT THE
REGIONAL AIRPORTS THIS MORNING...WITH OCCASIONAL BREAKS. INFRARED
SATELLITE IMAGERY CONFIRMS PATCHES OF LOW CLOUDS FORMING OVER THE
MARINE AREAS AND MOVING ASHORE ON A SOUTHEAST WIND. BREEZY SOUTHEAST
WINDS WILL DEVELOP THIS AFTERNOON...ALLOWING FOR MORE BREAKS AND A
GENERAL LIFTING OF CEILINGS TO VFR. A WEAK CAP ALOFT AT AROUND 10
KFT WILL NOT BE AN INHIBITION TO LOWER LEVEL MIXING. CEILINGS WILL
DECREASE AGAIN THIS EVENING HOWEVER...LEADING TO MORE MVFR CEILINGS
TONIGHT. DESPITE RIDGING OVERHEAD...DISTURBANCES WILL MOVE WITHIN
THE FLOW FROM THE SOUTHWEST...AND ISOLATED THUNDERSTORM DEVELOPMENT
IS POSSIBLE TO THE WEST. THIS LATE AFTERNOON ACTIVITY DOES NOT
APPEAR TO MOVE SIGNIFICANTLY TOWARD THE COAST...ALTHOUGH MFE DOES
HAVE AN OUTSIDE CHANCE OF SEEING SOME LIGHTNING IN THE VICINITY
DURING THE LATE AFTERNOON AND EARLY EVENING.
&&

.PRELIMINARY POINT TEMPS/POPS...
BAYVIEW/PORT ISABEL  88  76  87  77 /  10  10  10  10
BROWNSVILLE          89  74  89  76 /  10  10  10  10
HARLINGEN            91  74  91  75 /  10  10  10  10
MCALLEN              91  74  91  75 /  20  10  10  10
RIO GRANDE CITY      93  75  92  76 /  20  10  10  10
SOUTH PADRE ISLAND   86  77  85  78 /  10  10  10  10
&&

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

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

PUBLIC/GRIDS...65
MARINE/AVIATION/MESO...54

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BROWNSVILLE TX
429 AM CDT MON MAY 5 2008

TXZ248>257-060930-
ZAPATA-JIM HOGG-BROOKS-KENEDY-STARR-HIDALGO-INLAND WILLACY-
INLAND CAMERON-COASTAL WILLACY-COASTAL CAMERON-
429 AM CDT MON MAY 5 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR DEEP SOUTH TEXAS.

.DAY ONE...TODAY AND TONIGHT.

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

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

SMALL CRAFT ADVISORY CONDITIONS MAY DEVELOP OVER THE GULF WATERS TUESDAY
NIGHT THROUGH THURSDAY MORNING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.