Area Forecast Discussion
Issued by NWS Houston/Galveston, TX

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000
FXUS64 KHGX 202053
AFDHGX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
353 PM CDT WED AUG 20 2014

.DISCUSSION...
THE DEEPER TROPICAL MOISTURE APPEARS TO HAVE ARRIVED ACROSS SE TX
THIS AFTN (PER THE ONGOING CONVECTION INLAND AND OVER THE COASTAL
WATERS). DID EXTEND CHC POPS THROUGH THIS EVENING GIVEN THE CURR-
ENT TRENDS. OTHERWISE NOT A LOT OF CHANGE WITH THE GRIDS THE NEXT
FEW DAYS AS MODELS CONTINUE WITH FCST OF THE BUILDING UPPER RIDGE
FROM THE EAST. POPS SHOULD BE GOING DOWN BUT LINGERING +2"PW AIR-
MASS COULD PRODUCE ISO ACTIVITY TOMORROW MORNING/AFTN. HOWEVER AS
RIDGING SETTLES OVER THE REGION THIS WEEKEND...THE DRYING AIRMASS
WILL BE LESS SUPPORTIVE OF ANYTHING MORE THAN VERY ISO STORMS ON/
NEAR THE SEABREEZE.

BUT THAT BEING SAID...GFS IS HINTING AT THE RETURN OF DEEPER GULF
MOISTURE (+2"PWS) SUN NIGHT/EARLY MON. NOT TOO SURPRISED WITH THE
SLIGHT CHANGE AS THE UPPER RIDGE SHIFTS A BIT MORE N/NE NEXT WEEK
AND WE GET MORE ON THE UNDERSIDE OF IT (I.E. A MORE OPEN GULF)...
THUS HERALDING THE RETURN OF SCT MAINLY DAYTIME HEATING GENERATED
PCPN. THIS SHOULD ALSO HELP LOWER TEMPS DOWN (A COUPLE OF DEGREES
OR SO) NEXT WEEK. IN THE MEANTIME...WILL EXTEND THE HEAT ADVISORY
FOR THE COASTAL COUNTIES THROUGH TOMORROW EVE. 41

&&

.MARINE...
THE SFC PRESSURE GRADIENT WILL PRODUCE MODERATE TO STRONG ONSHORE
WINDS TONIGHT INTO THURSDAY. SCEC MAY BE NEEDED TONIGHT INTO THUR
MORNING. HIGH PRESSURE BUILDING INTO THE AREA FROM THE EAST WILL
WEAKEN THE GRADIENT AND WINDS WILL DIMINISH TOWARD THE END OF THE
WEEK. LIGHT ONSHORE WINDS WILL PERSIST THROUGH THE FIRST HALF OF
NEXT WEEK. 39

&&

.PRELIMINARY POINT TEMPS/POPS...
COLLEGE STATION (CLL)      77  98  77  98  77 /  40  10  10  10  10
HOUSTON (IAH)              78  96  77  98  77 /  20  10  10  10  10
GALVESTON (GLS)            84  92  83  92  83 /  20  10  10  10  10

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...HEAT ADVISORY UNTIL 7 PM CDT THURSDAY FOR THE FOLLOWING ZONES:
     BRAZORIA...CHAMBERS...GALVESTON...JACKSON...MATAGORDA.

GM...NONE.
&&

$$


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