Area Forecast Discussion
Issued by NWS Houston/Galveston, TX

Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

000
FXUS64 KHGX 290121
AFDHGX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
821 PM CDT MON JUL 28 2014

.DISCUSSION...
STORMS ALONG THE FRONTAL BOUNDARY EARLY THIS AFTERNOON MOVED OFF
THE BOUNDARY AND HAS SWUNG WINDS TO THE NORTHEAST AT DKR-LFK WITH
OUTFLOW CONTINUING TO MOVE INTO CLL AREA AND NEARING UTS BUT
SLOWING. STORMS WEAKENING AND HEADED SOUTHEAST TOWARD THE TX/LA
BORDER. EXPECT WINDS TO RELAX OVERNIGHT AND WILL LIKELY END UP L/V
BY MORNING EXCEPT NEAR THE COAST WHERE W OR EVEN NW WINDS WILL
RETURN. ABUNDANT HIGH CLOUDS THROUGH MIDNIGHT THEN DECREASING.
SOME MVFR CIGS/VIS POSSIBLE MAINLY AFTER 10Z FOR THE NORTHERN
TERMINALS CXO NORTHWARD AND PATCHY FOG AT SGR/LBX. THE PREFRONTAL
TROUGH WAFFLES AROUND TUESDAY GENERALLY FROM CLL-CXO-BPT AND
MAY BECOME A FOCUS FOR SHRA/TSRA IN THE AFTERNOON. HARD TO
PINPOINT ANY SPECIFIC TIMES YET OTHER THAN CONVECTIVE TEMPERATURES
BEING REACHED AROUND 20Z.
45

&&

.AVIATION...


&&

.PREV DISCUSSION... /ISSUED 355 PM CDT MON JUL 28 2014/

DISCUSSION...
A STATIONARY BOUNDARY DRAPED ACROSS CENTRAL TEXAS...SCATTERED
THUNDERSTORMS FIRING ALONG IT OVER SJT AND FWD`S FORECAST AREAS.
IT`S DIFFICULT TO DISCERN WHETHER THERE IS AN EXISTING PRE-FRONTAL
TROUGH JUST DOWNSTREAM OF THE STATIONARY BOUNDARY ANALYZED SOMEWHERE
BETWEEN WACO AND THE DFW METROPLEX. NWP ENSEMBLE BACKS THE 594
DAM RIDGE OFF AND CENTERS OVER THE BIG BEND/DESERT SW BY LATE
TUESDAY. WITH A PREDOMINANT NW MID-UPPER FLOW PATTERN ALONG THE
WESTERN LEG OF THE DEVELOPING EASTERN CANADA/EASTERN CONUS
TROF...THE SYNOPTIC BOUNDARY SHOULD SLOWLY SAG INTO THE FAR
NORTHERN REACHES OF OUR CWA THROUGH TOMORROW AFTERNOON. THERE IS
A CHANCE THAT DOWNSTREAM CONVECTIVE OUTFLOW BOUNDARIES (ALONG THE
SOUTHERN EDGE OF COLD POOLS PROPAGATING FROM NE TX STORMS) WILL
PROVIDE THE REQUIRED FOCUS/LIFT NEEDED IN GENERATING EARLY TO MID
DAY CONVECTION. THE SCENE WILL BECOME A BIT MUDDLED FROM TOMORROW
ON THROUGH THURSDAY AS DAILY CONVECTIVE BEHAVIOR WILL STRICTLY BE
DRIVEN IN THE SMALLER MESO/MICRO SCALE(S). MORE OVERCAST AND
FREQUENT PERIODS OF RAIN WILL AID IN REGULATING LATE WEEK DAILY
TEMPERATURE EXTREMA INTO THE UPPER 80S TO AROUND 90F.

BY THURSDAY...RELATIVELY DRIER MID-WEEK PROFILES WILL SATURATE UP
TO PAST 2 INCH PWATS AND WHATEVER IS LEFT OF THE VERY DIFFUSE
SYNOPTIC BOUNDARY WILL WAVER SOMEWHERE OVER THE SOUTHERN HALF OF
THE FORECAST AREA. RAIN/STORM CHANCES WILL INCREASE THURSDAY AND
FRIDAY AND BE DEPENDENT UPON THE SOUTHERN AND WESTERN EXTENT OF A
SERIES OF SHORTWAVE DISTURBANCES PASSING ACROSS THE ARKLATEX REGION.
AS OF NOW...THE HIGHER PVA AND MORE FAVORABLE UPPER LEVELS (SLIGHTLY
BETTER DIFFLUENCE)...PEG THU/FRI AS THE HIGHEST PRECIP PROB DAYS.
RAIN CHANCES REMAIN HIGH GOING INTO THE WEEKEND...ESPECIALLY IN
THE VICINITY OF A NEAR-COASTAL WEAK SURFACE (INVERTED) TROUGH.
AGAIN...PERIODS OF RAIN WILL BE DRIVEN BY THE SMALLER SCALE SO
TIMING WILL NEEDED TO BE ADJUSTED ON A MOVING SCALE. THE LARGE
SCALE/BACKGROUND APPEARS FAVORABLE FOR A MORE WET MID TO LATE WEEK
..FROM THE NEAR-SATURATED UNSTABLE PROG SOUNDINGS TO THE BETTER
UPPER DIFFLUENCE. 31

MARINE...
THE SURFACE HIGH PRESSURE RIDGE ACROSS THE NORTHERN GULF OF MEXICO
WILL KEEP ONSHORE WINDS IN PLACE FOR MOST OF THE WORK WEEK. THE
MODELS WERE PUSHING A FRONT INTO THE UPPER TEXAS COASTAL PLAINS BY
AROUND FRIDAY. THERE IS SOME UNCERTAINTY ON HOW FAR SOUTH THE FRONT
WILL PUSH. FOR NOW WENT WITH THE CONSENSUS OF PUSHING A WEAK BOUNDARY
OFF THE COAST ON SATURDAY. ANY OFFSHORE WINDS ARE EXPECTED TO QUICKLY
SWING BACK AROUND TO OUT OF THE SOUTHEAST BY SATURDAY NIGHT. 40

&&

.PRELIMINARY POINT TEMPS/POPS...
COLLEGE STATION (CLL)      76  96  75  96  74 /  30  30  20  20  20
HOUSTON (IAH)              77  95  75  95  75 /  30  30  20  20  20
GALVESTON (GLS)            81  91  80  90  81 /  20  30  20  20  20

&&

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

$$

DISCUSSION...41
AVIATION/MARINE...45


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.