Area Forecast Discussion
Issued by NWS Houston/Galveston, TX

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000
FXUS64 KHGX 202028
AFDHGX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
328 PM CDT SUN JUL 20 2014

.DISCUSSION...
A VERY WEAK TROUGH ALONG THE COAST IS AIDING THE DEVELOPMENT OF
SOME ISOLATED SHOWERS ALONG THE SEABREEZE THIS AFTERNOON. THESE
WILL DRIFT SLOWLY EASTWARD OVER THE NEXT COUPLE OF HOURS AND WILL
AFFECT REGIONS TO THE SOUTHWEST OF THE HOUSTON METRO AREA.

RAIN CHANCES DROP OFF AFTER TODAY AS THE UPPER LEVEL RIDGE EXPANDS
OFF TO THE WEST. AFTERNOON HIGHS WILL RISE INTO THE MID 90S BY
TUESDAY WITH HEAT INDEX VALUES REACHING ABOVE 100 DEGREES MONDAY
AND TUESDAY AFTERNOON. THE COASTAL COUNTIES WILL SEE HEAT INDEX
VALUES CLIMB EVEN HIGHER...TO BETWEEN 105 AND 107 DEGREES EACH
AFTERNOON. THE RIDGE WILL BEGIN TO RETREAT BACK TO THE WEST
SLIGHTLY BY MIDWEEK ALLOWING FOR SOME SLIGHT RELIEF TO THE HEAT
AND PERHAPS A BIT OF RAIN ACROSS OUR EASTERN COUNTIES. AN
INTERESTING PATTERN IS SETTING UP FOR THE EXTENDED FORECAST WITH
AN UPPER LEVEL LOW OVER THE BAY OF ALASKA PROGGED TO MOVE ACROSS
SOUTHERN CANADA BEFORE DEEPENING AND DIVING INTO THE EASTERN
UNITED STATES. THIS WILL ONCE AGAIN PROVIDE A BIT OF RELIEF FROM
THE HEAT AND PERHAPS SOME SLIGHT RAIN CHANCES FOR THE FIRST HALF
OF NEXT WEEK. 38

&&

.AVIATION...
SHOWERS ALONG THE SEABREEZE NEARLY STATIONARY WITH CIGS BACK UP
INTO VFR ACROSS THE AREA TERMINALS. WEAK SFC RIDGING CAN BE SEEN
IN THE WINDFIELD WITH NORTHERLY FLOW AT IAH/BPT WHILE WINDS AT
PSX/LBX ARE SOUTHERLY BEHIND THE SEABREEZE. STRONG ENOUGH CAPPING
IN PLACE THAT OTHER THAN SGR DON`T EXPECT ANY NEED FOR VCNTY SHRA
FOR OTHER TERMINALS. OVERNIGHT ABUNDANT LOW LEVEL MOISTURE WILL
CREEP NORTHWARD AND EXPECT WIDESPREAD MVFR CIGS (POSSIBLY IFR)
ACROSS THE CLL-IAH-LBX REGION WHERE RICHEST MOISTURE MIXES IN THIS
AFTERNOON. ISOLATED SHOWERS POSSIBLE TOMORROW BUT AGAIN IT SHOULD
BE SMALL AREAL COVERAGE.

45

&&


.MARINE...
EAST AND SOUTHEAST FLOW IN PLACE AS RIDGE OVER THE ARKLATEX/LA AREA
BECOMES MORE DOMINANT TONIGHT AND MONDAY. SOUTHEAST TO SOUTH FLOW
WILL PREVAIL THIS WEEK. SEAS BUILDING FROM 1-2 FEET TO 2-4 FEET BY
THURSDAY AND FRIDAY WITH INCREASE IN SOUTHERLY WIND SPEEDS.

45

&&

.PRELIMINARY POINT TEMPS/POPS...
COLLEGE STATION (CLL)      76  96  76  96  75 /  10  10  10  10  10
HOUSTON (IAH)              77  94  78  95  77 /  10  10  10  20  10
GALVESTON (GLS)            82  90  81  91  81 /  20  10  10  20  20

&&

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

$$

DISCUSSION...38
AVIATION/MARINE...45



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