000
FXUS64 KBRO 172357 AAA
AFDBRO

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE BROWNSVILLE TX
657 PM CDT MON JUN 17 2013

.DISCUSSION...UPDATED FOR LATEST AVIATION DISCUSSION BELOW.
&&

.AVIATION...SATELLITE IMAGES AND SURFACE OBSERVATIONS INDICATE
MOSTLY CLEAR SKIES ACROSS THE CWA EARLY THIS EVENING. EXPECT VFR
CONDITIONS TO PREVAIL ACROSS THE RIO GRANDE VALLEY TONIGHT INTO
TUESDAY AS 500MB RIDGE ACROSS NORTHERN MEXICO AND A 500MB RIDGE
ACROSS THE GULF OF MEXICO PROVIDES SUBSIDENCE ACROSS THE AREA.
SOME MVFR CEILINGS MAY DEVELOP TONIGHT AS THE MARINE LAYER SURGES
INLAND ACROSS THE LOWER TX COAST THIS EVENING.
&&

.PREV DISCUSSION... /ISSUED 254 PM CDT MON JUN 17 2013/
SHORT TERM /NOW THROUGH TUESDAY NIGHT/...DRY AND ABOVE NORMAL
TEMPERATURES WILL CONTINUE THROUGH THE PERIOD AS HIGH PRESSURE
ALOFT CONTINUES TO PROVIDE SUBSIDENCE ACROSS THE REGION. SURFACE
HIGH PRESSURE OVER THE GULF OF MEXICO INTERACTING WITH LOWER
PRESSURE OVER WEST TEXAS WILL MAINTAIN SOUTH TO SOUTHEAST
WINDS...MODERATE AND GUSTY AT TIMES...THROUGH TUESDAY NIGHT. HIGH
TEMPERATURES WILL RANGE FROM AROUND 90 ALONG THE COAST...MID TO
UPPER 90S IN THE VALLEY TO AROUND 100 WEST. THE HEAT INDICES WILL
REACH THE TRIPLE DIGITS...105 TO 109...TUESDAY AFTERNOON.
OVERNIGHT LOW TEMPERATURES TONIGHT AND TUESDAY NIGHT WILL BE IN
THE MID TO UPPER 70S INLAND TO AROUND 80 NEAR THE COAST.

LONG TERM /WEDNESDAY THROUGH SUNDAY/...H5 RIDGE CONTINUES TO
REBUILD ACROSS WESTERN TEXAS DURING THE LONG TERM PERIOD. THIS
WILL HOLD OFF ANY MOISTURE TRYING TO RETURN TO THE VALLEY...WHILE
KEEP TEMPERATURES RIGHT AROUND 100 EACH DAY...WITH HEAT INDEX
VALUES REACHING 105 TO 109. THE RIDGE GETS NUDGED BACK TO THE
WEST STARTING LATE SATURDAY AS AN INVERTED TROUGH ACROSS THE GULF
SLOWLY SHIFTS WWD. WHILE SOME MOISTURE MAY RETURN WITH THE
TROUGH...CHANCES FOR SEABREEZE SHOWERS TO DEVELOP ARE MINIMAL AT
THIS TIME.

MARINE...NOW THROUGH TUESDAY NIGHT...BUOY 42020 REPORTED
SOUTH-SOUTHEAST WINDS AROUND 12 KNOTS GUSTING TO AROUND 16 KNOTS
WITH SEAS OF 3 FEET WITH A PERIOD OF 6 SECONDS AT 2 PM CDT/19 UTC.
SMALL CRAFT SHOULD EXERCISE CAUTION CONDITIONS TO CONTINUE ACROSS
THE LAGUNA MADRE THROUGH SUNSET BEFORE DIMINISHING LATER THIS
EVENING. OTHERWISE...MODERATE WINDS AND SEAS WILL CONTINUE ALONG THE
LOWER TEXAS COAST THROUGH THE PERIOD. SMALL CRAFT EXERCISE CAUTION
CONDITIONS EXPECTED AGAIN ON TUESDAY OVER THE LAGUNA MADRE AND THE
NEAR SHORE GULF WATERS AS THE PRESSURE GRADIENT STRENGTHENS.

WEDNESDAY THROUGH FRIDAY...WITH DOMINANT SFC RIDGE ACROSS THE
EASTERN US AND SFC LOW PRESSURE MEANDERING ACROSS THE NORTHERN
PLAINS...GRADIENT WILL NOT HAVE A CHANCE TO DEEPEN FURTHER THROUGH
THE REST OF THE WEEK. WITH LESSER SEABREEZE EFFECTS
INLAND...BREEZY CONDITIONS WILL BE MINIMIZED ACROSS THE LAGUNA
MADRE EACH DAY. EXPECT GENERALLY SOUTHEAST WINDS OF 10 TO 15 KNOTS
EACH DAY....WITH SEAS RIGHT AROUND 4 FEET.
&&

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

$$

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

61/68/MARTINEZ