000
FXUS64 KHGX 231146
AFDHGX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
545 AM CST MON NOV 23 2009

.UPDATE...
12Z AVIATION UPDATE BELOW.

&&

.AVIATION...
MORE WIDESPREAD DENSE FOG ACROSS MAJORITY OF NON-URBAN TERMINALS
THIS MORNING...BACK TO VFR BY 15Z. SWATH OF MID-UPPER DRY AIR
SWINGING ACROSS CENTRAL AND EASTERN TEXAS GOING INTO THE AFTERNOON
ALLOWING SKC UNDER A WEAK ONSHORE WIND. T/TD SPREAD MAY NOT BE AS
SMALL TUESDAY MORNING AS ATMOSPHERE SLOWLY WARMS UP SLIGHTLY QUICKER
THAN MOISTURE RETURN. NOT ANTICIPATING WIDESPREAD FOG FORMATION...
MORE SPOTTY IFR BR ACROSS MORE RURAL SITES. INCREASING CLOUD COVER
FROM 24/14Z ONWARD DUE TO A SOUTHERN PLAINS TROF DRAGGING IN HIGHER
MOISTURE AHEAD OF IT...PROB30 OF -SHRA AT KIAH UNDER WEAK CAPPING. 31

&&

.PREV DISCUSSION... /ISSUED 439 AM CST MON NOV 23 2009/

DISCUSSION...
AREAS OF FOG...SOME DENSE...WILL LIFT AND BURN OFF AFTER SUNRISE. ANOTHER
DRY DAY IS IN STORE FOR THE AREA AS SURFACE HIGH PRESSURE EDGES OFF
TO THE EAST AND WEAK SOUTH TO SOUTHEAST WINDS BECOME ESTABLISHED. THE
NEXT COLD FRONT ALONG WITH A CHANCE OF SHOWERS AND THUNDERSTORMS COMES
THROUGH THE AREA TOMORROW. SURFACE HIGH PRESSURE BUILDS IN BEHIND THE
FRONT AND BRINGS COOL NIGHTS AND MILD DAYS THROUGH THE REST OF THE WEEK
WITH ONLY OCCASIONAL HIGH CLOUDS MOVING ACROSS THE AREA. THANKSGIVING
WILL SEE LOWS IN THE 40S AND HIGHS IN THE 60S. THE SURFACE HIGH MOVES
OFF TO THE EAST OVER THE WEEKEND AND ALLOWS FOR AN ONSHORE FLOW TO SET
UP AND STRENGTHEN. EXPECT WARMING TEMPERATURES...INCREASING CLOUDS...AND
GRADUALLY INCREASING RAIN CHANCES OVER THE WEEKEND.  42

MARINE...
QUIET MARITIME CONDITIONS THROUGH MID-TUESDAY. THE NEXT FRONT IS
TIMED TO REACH THE NEAR SHORE WATERS SOMETIME TUESDAY AFTERNOON.
ADVISORY CRITERIA WILL BE MET GOING INTO THAT EVENING AS OFFSHORE
SUSTAINED WINDS OF 20 KTS OR GREATER AND 6-9 FOOT SEAS LAST THROUGH
WEDNESDAY AFTERNOON. OFFSHORE FLOW WILL PERSIST THROUGH THIS WEEKEND
AS A REINFORCING NORTHERN HIGH PRESSURE CELL COMES ACROSS THE WATERS
LATE THURSDAY INTO EARLY FRIDAY. ONSHORE WINDS RESUME SATURDAY
AFTERNOON...INCREASING IN STRENGTH SUNDAY BEFORE THE NEXT FRONTAL
PASSAGE MONDAY. 31

&&

.PRELIMINARY POINT TEMPS/POPS...
COLLEGE STATION (CLL)      74  54  66  44  66 /   0  30  30  10   0
HOUSTON (IAH)              74  57  72  45  66 /   0  20  40  10   0
GALVESTON (GLS)            71  63  73  53  65 /   0  20  50  20   0

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...DENSE FOG ADVISORY UNTIL 9 AM CST THIS MORNING FOR THE FOLLOWING
     ZONES: AUSTIN...BRAZORIA...BRAZOS...BURLESON...CHAMBERS...
     COLORADO...FORT BEND...GALVESTON...GRIMES...HARRIS...
     HOUSTON...JACKSON...LIBERTY...MADISON...MATAGORDA...
     MONTGOMERY...POLK...SAN JACINTO...TRINITY...WALKER...
     WALLER...WASHINGTON...WHARTON.

GM...NONE.
&&

$$

DISCUSSION...42
AVIATION/MARINE...31