Area Forecast Discussion
Issued by NWS Houston/Galveston, TX

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000
FXUS64 KHGX 201729
AFDHGX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1229 PM CDT SUN APR 20 2014

.DISCUSSION...
18Z TAF DISCUSSION IN AVIATION SECTION.

&&

.AVIATION...
VIS SATELLITE SHOWS MAINY HIGH/MID LEVEL CLOUDS MOVING ACROSS SE
TX WITH MAYBE SOME HIGH BASED CU UNDERNEATH THE HIGH CLOUDS.
OVERALL NOW HAVE VFR CIGS THROUGH NEXT 6-12 HRS. WINDS ARE
EXPECTED TO DECOUPLE AND SEE ANOTHER SET UP FOR FOG LIMITING VSBY
FOR THE MORNING. MODELS ARE NOT AGGRESSIVE WITH LOWER VSBY SO
FORECAST BASED ON PERSISTENCE. WOULD NOT BE SURPRISED IF THERE
WERE SOME PERIODS OF IFR/LIFR CONDITIONS IN THE MORNING DUE TO FOG
AND MAINLY HIT THAT WITH 2 HR TEMPO GROUPS. VERY POSSIBLE THOSE
CONDITIONS COULD LAST LONGER BUT HARD TO PINPOINT THOSE DETAILS
EVEN 15-18 HOURS AWAY.

39

&&

.PREV DISCUSSION... /ISSUED 1052 AM CDT SUN APR 20 2014/

DISCUSSION...
JUST A FEW TWEAKS TO THE GOING FCST FOR THIS AFTN...MAINLY TO ADD
THE MENTION OF ISO SHRA AS THE ACTIVITY FROM WEST MOVES CLOSER TO
THE REGION. NOT SURE IF A LOT OF THIS WILL REACH THE GROUND INIT-
IALLY BUT THE APPROACH OF THE MAIN UPPER TROF (AND ITS ASSOCIATED
SHORTWAVES) TO HELP TO INCREASE THE LIKELIHOOD OF MEASURABLE AMTS
BY TONIGHT. ALSO...IT LOOKS LIKE SOME OF THAT FOG OVER THE SOUTH-
ERN PARTS HARRIS COUNTY HAVE MOVED INTO GLS/GLS BAY. HOWEVER WILL
REMAIN STEADFAST IN THINKING THAT THIS TOO WILL MIX OUT SHORTLY.
41



&&

.PRELIMINARY POINT TEMPS/POPS...
COLLEGE STATION (CLL)      80  61  81  63  84 /  10  20  20  20  10
HOUSTON (IAH)              81  62  81  64  84 /  10  20  20  20  20
GALVESTON (GLS)            75  66  77  67  77 /  10  20  20  20  20

&&

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

$$

DISCUSSION...41
AVIATION/MARINE...39



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