998
FXUS64 KHGX 181113
AFDHGX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
513 AM CST WED DEC 18 2024
..NEW AVIATION
SHORT TERM
(TODAY THROUGH THURSDAY NIGHT)
ISSUED AT 338 AM CST WED DEC 18 2024
ANOTHER ROUND OF WIDESPREAD DENSE FOG ONGOING THIS MORNING COURTESY
OF LIGHT WINDS AND ONSHORE FLOW BRINGING MOISTURE INTO SE TEXAS. FOG
SHOULD DISSIPATE AROUND MID-LATE MORNING. USE EXTRA CAUTION WHILE
DRIVING, LEAVE PLENTY OF SPACE BETWEEN CARS, AND USE LOW-BEAM
HEADLIGHTS.
A COLD FRONT WILL ENTER THE BRAZOS VALLEY AROUND MID-MORNING THIS
MORNING, BRINGING WITH IT A LINE OF SHOWERS AND THUNDERSTORMS. THIS
BOUNDARY AND THE ASSOCIATED LINE OF STORMS WILL MOVE THROUGH THE
HOUSTON METRO AROUND NOON, AND IS EXPECTED TO BE OFFSHORE AROUND MID
TO LATE AFTERNOON. COLD AND DRY AIR WILL FILL IN BEHIND THE FRONT.
THE EARLY ARRIVAL OF THE FRONT IN THE BRAZOS VALLEY AND PINEY WOODS
WILL ALLOW DAYTIME TEMPERATURES TO DROP INTO THE 60S. CLOSER TO THE
METRO AND ALONG THE COAST, THERE WILL BE TIME FOR DAYTIME HEATING
TO ALLOW HIGHS TO REACH INTO THE 70S.
TEMPERATURES FOR TONIGHT WILL FEEL MORE LIKE WHAT WE WOULD EXPECT
FOR DECEMBER. LOWS WILL DROP INTO THE UPPER 30S ACROSS THE BRAZOS
VALLEY AND PINEY WOODS AND INTO THE 40S ELSEWHERE. LOWS ALONG THE
COAST MAY BE A TOUCH HIGHER AS TEMPS NEAR 50 DEGREES. HIGHS FOR
THURSDAY WILL BE IN THE 60S AREA WIDE UNDER PARTLY CLOUDY SKIES AS
NORTHERLY WINDS CONTINUE TO USHER IN COOLER AND DRIER AIR. THURSDAY
NIGHT'S LOWS WILL BE IN THE UPPER 30S TO MID 40S NORTH OF I-10 AND
IN THE 40S SOUTH OF I-10.
LONG TERM
(FRIDAY THROUGH TUESDAY)
ISSUED AT 338 AM CST WED DEC 18 2024
SURFACE HIGH PRESSURE RIDGING INTO THE AREA FROM THE NORTH WILL SUPPORT
THE COOL AND DRY WEATHER PATTERN AT THE END OF THE WEEK AND OVER THE
WEEKEND. AS THE WEEKEND PROGRESSES, THIS HIGH WILL MOVE OFF TO THE EAST
WHICH WILL ALLOW FOR THE NORTH TO NORTHEAST WINDS TO SHIFT TO THE EAST
AND SOUTHEAST. THIS WILL BRING THE AREA A SLOW WARMING TREND OVER THE
WEEKEND (MAINLY DAYTIME HIGHS) AND INTO THE START OF THE NEW WEEK. THIS
FORECAST PACKAGE HAS THE AREA'S NEXT BEST CHANCE OF RAIN ON TUESDAY
AS THE NEXT SYSTEM/DISTURBANCE MOVES ACROSS THE STATE.
FOR TEMPERATURES, FRIDAY STARTS OUT WITH LOWS MAINLY IN THE 40S (SOME
30S PINEY WOODS AND BRAZOS VALLEY AREAS) AND HIGHS IN THE 60S. A REINFORCING
COLD FRONT WILL BRING THE AREA ITS COLDEST TEMPERATURES ON FRIDAY NIGHT
(LOWS IN THE 30S/40S WITH POSSIBLE NEAR OR SUBFREEZING TEMPERATURES
IN/AROUND THE PINEY WOODS) AND SATURDAY (HIGHS IN THE 50S/60S). AFTER
ANOTHER COOL/COLD NIGHT ON SATURDAY NIGHT (LOWS IN THE 30S/40S), THE
SLOW WARMING TREND STARTS ON SUNDAY (HIGHS IN THE 50S/60S, AROUND
3 TO 4 DEGREES WARMER THAN SATURDAY'S HIGHS). WE WILL GET RID OF THE
30S ON SUNDAY NIGHT WITH LOWS IN THE 40S/50S. THE HOLIDAY WEEK AND
LAST FULL WEEK OF 2024 STARTS OUT EVEN WARMER WITH MONDAY'S AND TUESDAY'S
HIGHS BACK INTO THE 60S/70S WHILE MONDAY NIGHT'S AND TUESDAY NIGHT'S
LOW BOTTOM OUT IN 50S.
FOR THOSE LOOKING AT WEDNESDAY, THE CURRENT FORECAST HAS US DRY WITH
HIGHS IN THE 70S. 42
AVIATION
(12Z TAF ISSUANCE)
ISSUED AT 509 AM CST WED DEC 18 2024
ALL SITES EXPERIENCING LIFR VSBYS AND CIGS THIS MORNING. EXPECT
CONDITIONS TO IMPROVE AROUND 15Z TO MVFR LEVELS. ALL SITES
EXPECTED TO IMPROVE TO VFR THIS AFTERNOON BY 20Z. SHOWERS AND
THUNDERSTORMS EXPECTED TO FORM IN ASSOCIATION WITH A COLD FRONT
TODAY. THIS WILL IMPACT NORTHERN TERMINALS AROUND 15Z, THE METRO
AROUND 18Z, AND SHOULD MOVE OFFSHORE AROUND 20Z. BEHIND THE FRONT,
WINDS MAY GUST TO ABOVE 20KTS.
MARINE
ISSUED AT 338 AM CST WED DEC 18 2024
AREAS OF FOG...SOME DENSE...CAN BE EXPECTED EARLY THIS MORNING, ESPECIALLY
IN THE BAYS AND NEARSHORE WATERS. LIGHT SOUTHEAST WINDS WILL SHIFT TO
THE NORTHWEST AND NORTH AND STRENGTHEN LATER THIS AFTERNOON THROUGH
EARLY THIS EVENING AFTER A COLD FRONT MOVES THROUGH THE AREA. SOME SHOWERS
AND THUNDERSTORMS WILL ACCOMPANY THE FRONT. BEHIND THE FRONT, CAUTION
FLAGS WILL BE NEEDED, AND ADVISORIES ARE POSSIBLE. THE OFFSHORE FLOW
BEHIND THE FRONT WILL PERSIST FOR THE REMAINDER OF THE WEEK WITH WINDS
BECOMING EAST TO SOUTHEAST OVER THE WEEKEND. 42
PRELIMINARY POINT TEMPS/POPS
COLLEGE STATION (CLL) 66 40 61 40 / 70 0 0 0
HOUSTON (IAH) 72 45 64 45 / 70 0 0 0
GALVESTON (GLS) 70 51 61 49 / 30 0 0 0
HGX WATCHES/WARNINGS/ADVISORIES
TX...DENSE FOG ADVISORY UNTIL 9 AM CST THIS MORNING FOR TXZ199-200-
210>214-226-227-235>238-300-313-335>338.
DENSE FOG ADVISORY UNTIL 10 AM CST THIS MORNING FOR TXZ436>439.
GM...DENSE FOG ADVISORY UNTIL 10 AM CST THIS MORNING FOR GMZ330-335-
350-355.
SMALL CRAFT SHOULD EXERCISE CAUTION FROM 3 PM CST THIS AFTERNOON
THROUGH LATE TONIGHT FOR GMZ330-335-350-355-370-375.
SHORT TERM...ADAMS
LONG TERM....42
AVIATION...ADAMS
MARINE...42
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