Area Forecast Discussion
Issued by NWS Houston/Galveston, TX

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000
FXUS64 KHGX 270007 CCA
AFDHGX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
702 PM CDT SUN OCT 26 2014

.DISCUSSION...
PLEASE SEE 00Z AVIATION DISCUSSION.

&&

.AVIATION... VFR CONDITIONS TO CONTINUE THIS EVENING. SOME PATCHY
MVFR VSBYS WILL BE POSSIBLE DURING PRE-DAWN HOURS AT
KLBX...KCXO...AND KSGR. SCATTERED IFR ARE VSBYS LESS LIKELY
TONIGHT...BECAUSE THERE SHOULD BE ADDITIONAL MIXING IN THE BOUNDARY
LAYER.  LOW LEVEL MOISTURE IS IN A THIN LAYER AT THE SURFACE... SO
VSBY RESTRICTIONS SHOULD BE MORE PREVALENT THAN CIG RESTRICTIONS.

VFR CONDITIONS TO RESUME AREA WIDE BY MID MORNING TOMORROW.
A TIGHTENING SURFACE PRESSURE GRADIENT WILL CAUSE SOUTHERLY WINDS
TO INCREASE TO 15 TO 20 KTS ACROSS THE AREA ON MONDAY AFTERNOON. 44

&&

.PREV DISCUSSION... /ISSUED 318 PM CDT SUN OCT 26 2014/

DISCUSSION...
AN UPPER LEVEL RIDGE WAS LOCATED OVER THE SOUTHERN HALF OF THE
STATE THIS AFTERNOON. A FAIRLY PROGRESSIVE FLOW WILL THEN DEVELOP
OVER THE SOUTHERN PLAINS AND TEXAS TO PROVIDE A SERIES OF
SHORTWAVE TROUGHS OVER THE MID WEEK PERIOD. ANOTHER UPPER LEVEL
RIDGE WILL THEN DEVELOP TO AFFECT SE TX LATE THIS WEEK INTO THE
UPCOMING WEEKEND.

WITH ONSHORE FLOW IN PLACE...PATCHY FOG WILL AGAIN BE POSSIBLE
TONIGHT. AS THE UPPER LEVEL RIDGE BREAKS DOWN AND AND UPPER LOW
MOVES INTO THE CENTRAL AND NORTHERN PLAINS...STRONGER MOISTURE AND
TEMPERATURE ADVECTION WILL LEAD TO AT LEAST ISOLATED RAIN CHANCES
ON TUESDAY WHILE A FRONTAL BOUNDARY IS EXPECTED TO BRING BETTER
CHANCES ON WEDNESDAY...AT LEAST OVER THE NORTHERN AND CENTRAL
AREAS. RAIN CHANCES PERSIST THROUGH THURSDAY AS THE MAIN UPPER
TROUGH MOVES ACROSS THE PLAINS.

MORE SEASONABLY COOL TEMPERATURES ARE THEN EXPECTED LATE THIS WEEK
AND OVER THE UPCOMING WEEKEND AS A NORTHERLY SURFACE FLOW PATTERN
SETS UP BEGINNING THURSDAY NIGHT. THIS WILL REPLACE THE ABOVE
NORMAL TEMPERATURES THAT WILL OCCUR OVER THE FIRST HALF OF THE
WEEK.

40

MARINE...
ONSHORE FLOW SHOULD INCREASE TONIGHT (MAYBE TO NEAR CAUTION LEVELS
FOR A FEW HOURS AROUND MIDNIGHT) AND CONTINUE THROUGH MONDAY NIGHT
AS THE PRESSURE GRADIENT TIGHTENS. WINDS/SEAS THEN RELAX INTO
MIDWEEK AS A WEAK FRONTAL BOUNDARY SAGS INTO SE TX. THIS FRONT WILL
PROBABLY HANG UP NEAR THE COAST UNTIL A SECONDARY STRONGER PUSH
ARRIVES TO TAKE IT OFFSHORE THURSDAY NIGHT AND FRIDAY. MODERATE
OFFSHORE FLOW IN ITS WAKE WILL EVENTUALLY SWING BACK TO THE SE ON
SUNDAY AS HIGH PRES MOVES OFF TO THE EAST AND PRESSURES FALL TO THE
WEST.  47

&&

.PRELIMINARY POINT TEMPS/POPS...
COLLEGE STATION (CLL)      63  86  66  84  65 /   0  10  10  10  20
HOUSTON (IAH)              65  85  67  85  66 /   0  10  10  20  20
GALVESTON (GLS)            71  82  73  83  71 /   0  10  10  20  20

&&

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

$$

DISCUSSION...42
AVIATION/MARINE...44



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