Area Forecast Discussion
Issued by NWS Houston/Galveston, TX

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FXUS64 KHGX 052346
AFDHGX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
546 PM CST THU MAR 5 2015

.DISCUSSION...
SEE THE AVIATION DISCUSSION BELOW.

40

&&

.AVIATION...
HIGH PRESSURE WILL BUILD INTO SE TX LATER TONIGHT AND FRIDAY. THIS
WILL HELP RELIEVE THE PRESSURE GRADIENT...LEADING TO DIMINISHING
WINDS OVER THE INLAND AREAS TONIGHT. GUSTY WINDS AT KLBX...KHOU...
AND KGLS WILL PERSIST THROUGH THE EVENING...WITH THE WINDS AT KLBX
AND KHOU DIMINISHING TO 12 KNOTS AROUND 06Z. KGLS WILL PROBABLY
SEE GUSTY WINDS THROUGH 18Z.

40

&&

.PREV DISCUSSION... /ISSUED 344 PM CST THU MAR 5 2015/

DISCUSSION...
SKIES ARE CLEARING RAPIDLY ACROSS SOUTHEAST TEXAS ALLOWING MOST
SITES TO REACH INTO THE LOW 40S THIS AFTERNOON. WINDS WILL BEGIN
TO EASE THIS EVENING AS HIGH PRESSURE SETTLES INTO THE STATE. THE
COMBINATION OF CLEAR SKIES AND LIGHT WINDS WILL ALLOW FOR GOOD
RADIATIONAL COOLING AND A FREEZE IS EXPECTED FOR ALL AREAS EXCEPT
THE IMMEDIATE COAST. NORTHERN LOCATIONS COULD SEE IN EXCESS OF 10
HOURS OF SUBFREEZING TEMPERATURES WITH HIGHS IN THE UPPER 20S.
TEMPERATURES WILL REACH INTO THE UPPER 40S BY FRIDAY AFTERNOON BUT
FALL BACK TO NEAR FREEZING SATURDAY MORNING.

LITTLE CHANGE TO THE EXTENDED FORECAST. RAIN CHANCES RETURN TO THE
AREA ON SUNDAY AS THE UPPER TROUGH BEGINS TO APPROACH FROM THE
WEST. RAIN CHANCES WILL BE GREATEST ALONG THE COAST AND OFFSHORE
BUT ALL AREAS STAND A GOOD CHANCE OF SEEING AT LEAST SOME RAIN ON
SUNDAY INTO MONDAY. RAIN CHANCES WILL SHIFT OFFSHORE THROUGH THE
MIDDLE AND LATTER PART OF NEXT WEEK AS THE UPPER TROUGH DEEPENS
OVER MEXICO. ONSHORE FLOW WILL ALLOW FOR INCREASING MOISTURE AND
TEMPERATURES THROUGH THE END OF NEXT WEEK. 38

MARINE...
GALE WILL EXPIRE SHORTLY WINDS DOWN TO 23-27 KNOTS AT AREA BUOYS
AND IN THE LOWER BAYS. LOW WATER ISSUES REMAIN BUT ARE IMPROVING
QUICKLY AND SO WILL LET THE LOW WATER ADVISORY EXPIRE AT 6 PM.
WINDS OVERNIGHT WILL SUPPORT SCA CONDITIONS FOR GULF WATERS AND
SCEC BAYS WITH NORTHERLY WINDS 15-25KTS. SEAS OF 11 FEET STILL
ONGOING WELL OFFSHORE BUT THESE TOO SHALL BE GRADUALLY LOWERING
TONIGHT. HAVE THE SCA 20-60NM WATER GOING UNTIL 18Z BUT GIVEN THE
SEAS IT MAY NEED EXTENDED 3-6 MORE HOURS. AS HIGH PRESSURE BUILDS
IN LATE FRIDAY/SATURDAY WINDS DROP OFF AND CHANGE FROM NORTHEAST
TO MORE EASTERLY. SLOW MOVING UPPER TROUGH ROTATES INTO TEXAS LATE
IN THE WEEKEND AND THIS SHOULD LEAD TO WEAK TROUGHING AND
CYCLOGENESIS IN THE WESTERN GULF LOCALLY INCREASING WINDS AS
GRADIENT WITH SURFACE TROUGHING TAKES PLACE. SHOWERS SHOULD BECOME
COMMON OVER THE GULF WATERS SUNDAY AND MONDAY WITH LOW CIGS AND
POSSIBLY SOME FOG. SCA CONDITIONS MAY BE POSSIBLE AGAIN SUNDAY AND
MONDAY. 45

AVIATION...
RAINS HAVE MOVED OUT AND WINDS RELAXING WITH THE MVFR DECK
BREAKING UP. BY THIS EVENING VFR CONDITIONS PREVAIL. 45

&&

.PRELIMINARY POINT TEMPS/POPS...
COLLEGE STATION (CLL)      25  50  34  56  40 /  10  10  10  10  30
HOUSTON (IAH)              29  52  34  58  42 /  10  10  10  10  30
GALVESTON (GLS)            35  50  43  53  49 /  10  10  10  20  40

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...NONE.
GM...LOW WATER ADVISORY UNTIL 6 PM CST THIS EVENING FOR THE FOLLOWING
     ZONES: GALVESTON BAY...MATAGORDA BAY.

     SMALL CRAFT SHOULD EXERCISE CAUTION THROUGH LATE TONIGHT FOR THE
     FOLLOWING ZONES: GALVESTON BAY...MATAGORDA BAY.

     SMALL CRAFT ADVISORY UNTIL 9 AM CST FRIDAY FOR THE FOLLOWING
     ZONES: WATERS FROM FREEPORT TO THE MATAGORDA SHIP CHANNEL
     OUT 20 NM...WATERS FROM HIGH ISLAND TO FREEPORT OUT 20 NM.

     SMALL CRAFT ADVISORY UNTIL NOON CST FRIDAY FOR THE FOLLOWING
     ZONES: WATERS FROM FREEPORT TO THE MATAGORDA SHIP CHANNEL
     20 NM TO 60 NM...WATERS FROM HIGH ISLAND TO FREEPORT 20 TO
     60 NM.

&&

$$

DISCUSSION...43
AVIATION/MARINE...40


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