FXUS64 KHGX 250528
AFDHGX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1128 PM CST THU DEC 24 2009

.DISCUSSION...
QUICK UPDATE TO DROP WIND ADVISORY FOR ALL COUNTIES BUT GALVESTON
COUNTY. WINDS OVER THE COASTAL AREAS AND ISLAND WILL CONTINUE AND
00Z GUIDANCE CONTINUES TO SHOW TIGHTER GRADIENT AND CAA THAT
SUPPORTS EXTENDING IT FOR GALVESTON COUNTY.
SKIES CLEARING A LITTLE FASTER AND WITH WINDS/MIXING HOLDING UP
TEMPERATURES BUT AM EXPECTING A LOWERING OF WINDS AFTER MIDNIGHT
AND TEMPERATURE FALL TO CONTINUE. WIND CHILL READINGS OVERNIGHT OF
17 TO 24 NORTH AND 23 TO 28 SOUTH SHOULD COVER THE LOWEST VALUES.

HAVE ALSO VERIFIED WITH BRAZOS SHERIFFS OFFICE THAT OBSERVATION
FROM CLL ASOS IN ERROR...OFFICERS REPORT CLEAR SKIES AND BREEZY
CONDITIONS.

45

&&

.PREV DISCUSSION... /ISSUED 928 PM CST THU DEC 24 2009/ 

DISCUSSION...
WNW WINDS CONTINUE TO RACE THROUGH AT 15 TO 30 MPH WITH GUSTS
24-39 MPH. HAVE EXTENDED THE WIND ADVISORY UNTIL MIDNIGHT. MODELS
PROGGING THE WINDS TO RELAX AND LOOKING AT THE SOUNDINGS AM
INCLINED TO AGREE SO THAT BETWEEN 11 PM AND 1 AM THE WINDS SHOULD
DROP OFF INLAND BUT STILL EXPECTING WINDS 10-15 MPH THROUGHOUT THE
REMAINDER OF THE NIGHT. EXCEPTION MAY BE COAST. WILL LIKELY RE-
EVALUATE THE PACKAGE AROUND 1130 PM TO SEE IF THE INLAND ADVISORY
WILL BE ALLOWED TO EXPIRE AND IF THE COASTAL COUNTIES MAY NEED
EXTENDING. 

ALL THIS OFFSHORE FLOW HAS LED TO TIDE LEVELS RUNNING 1 TO 1.8
FEET BELOW NORMAL.

SNOW FLURRIES IN NW COUNTIES HAS ENDED AND THE SKIES SHOULD BE
CLEARING OUT (BACK EDGE OF THE CLOUDS MOVING EAST AT 19 KNOTS AND
SHOULD BE CLEARING THE EASTERN EDGE OF THE CWA BY 09Z OR SO.)
SANTA SHOULD HAVE NO HINDRANCES FOR DROPPING OFF THE PRESENTS IN
SOUTHEAST TEXAS...HE WILL NEED IT TO MAKE UP TIME AS THE FLYING
WILL BE ROUGH (AND IFR) OVER THE CORRIDOR FROM OKLAHOMA TO
NEBRASKA AND EASTWARD...PLENTY SIMILAR TO THE NORTH POLE WINDS AND
SNOW (THUNDERSNOW IN EASTERN OK) BUT A GOOD BIT WARMER. GOOD
THING HE WILL HAVE RUDOLPH TO GUIDE HIM IN HIS IFR DIFFICULTIES.

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AVIATION...
SENT A QUICK AMENDMENT TO ALL TAFS FOR CLEARING LINE WORKING
THROUGH SE TX LATE THIS EVENING. HOUSTON METRO TERMINALS SHOULD
HAVE CLEAR SKIES AFTER 04Z WITH STILL VERY GUSTY WINDS FROM THE
NW. KCLL OB IS STILL REPORTING OVERCAST SKIES WITH 100FT
CEILINGS. LOOKING AT SATELLITE IMAGERY...SKIES SHOULD BE CLEAR
AND WITH OTHER OBSERVING STATIONS REPORTING CLEAR SKIES THE KCLL
CEILING LOOKS TO BE AN ERROR. THIS WILL LIKELY NEED TO BE
INVESTIGATED FURTHER AND CORRECTED.

39

&&

.PRELIMINARY POINT TEMPS/POPS...
COLLEGE STATION (CLL)      29  51  29  53  30 /  10   0  10  10  10 
HOUSTON (IAH)              32  51  32  54  34 /   0   0  10  30  30 
GALVESTON (GLS)            37  51  40  55  43 /   0   0  10  40  40 

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...WIND ADVISORY UNTIL 6 AM CST FRIDAY FOR THE FOLLOWING ZONES: 
     GALVESTON.

GM...SMALL CRAFT ADVISORY UNTIL 10 AM CST FRIDAY FOR THE FOLLOWING 
     ZONES: GALVESTON BAY...MATAGORDA BAY.

     SMALL CRAFT ADVISORY FROM 3 AM TO 10 AM CST FRIDAY FOR THE 
     FOLLOWING ZONES: WATERS FROM FREEPORT TO THE MATAGORDA SHIP 
     CHANNEL 20 NM TO 60 NM...WATERS FROM FREEPORT TO THE 
     MATAGORDA SHIP CHANNEL OUT 20 NM...WATERS FROM HIGH ISLAND 
     TO FREEPORT 20 TO 60 NM...WATERS FROM HIGH ISLAND TO 
     FREEPORT OUT 20 NM.

     GALE WARNING UNTIL 3 AM CST FRIDAY FOR THE FOLLOWING ZONES: 
     WATERS FROM FREEPORT TO THE MATAGORDA SHIP CHANNEL 20 NM TO 
     60 NM...WATERS FROM FREEPORT TO THE MATAGORDA SHIP CHANNEL 
     OUT 20 NM...WATERS FROM HIGH ISLAND TO FREEPORT 20 TO 60 
     NM...WATERS FROM HIGH ISLAND TO FREEPORT OUT 20 NM.

&&

$$

DISCUSSION...45