Area Forecast Discussion
Issued by NWS Houston/Galveston, TX

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
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 290257
AFDHGX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
857 PM CST SUN DEC 28 2014

.DISCUSSION...
HIGH PRESSURE WILL BUILD OVERHEAD AS THE SHORTWAVE TROUGH MOVES
EASTWARD OF THE FORECAST AREA. EXPECT CLEARING CONDITIONS AND
COLDER TEMPERATURES OVERNIGHT TONIGHT. FORECAST SOUNDINGS AND
GUIDANCE ALSO IS FORECASTING PATCHY FOG. BECAUSE OF THE CLEARING
SKIES AND THE ABUNDANCE OF SURFACE MOISTURE DUE TO THE RAINFALL...
PATCHY FOG DOES LOOK MORE LIKELY.

UPDATE TO TAKE OUT RAINFALL CHANCES AND TO ADD PATCHY FOG
OVERNIGHT TONIGHT AND ENDING MID MORNING MONDAY.

40

&&

.PREV DISCUSSION... /ISSUED 553 PM CST SUN DEC 28 2014/

DISCUSSION...
00Z TAF DISCUSSION IN AVIATION SECTION.

AVIATION...
LATEST RADAR TRENDS HAS RAIN ASSOCIATED WITH SHORT WAVE TROUGH
MOVING OUT OF THE AREA. THIS SHOULD ALLOW FOR VSBY/CIGS TO IMPROVE
THE NEXT SEVERAL HRS BUT STILL QUITE A BIT OF MOISTURE TRAPPED IN
COLD AIRMASS. SATELLITE IMAGERY SHOWS CLEARING LINE APPROACHING
KCLL FROM THE WEST. THIS MAY PUSH FAR ENOUGH EAST TO ALLOW FOR
IMPROVING CIGS BUT NOT SURE HOW FAR WEST IT WILL MOVE.

KCLL...THINK THERE SHOULD BE CLEARING FOR MOST OF THE NIGHT BUT
NOT SEEING MODELS INDICATE IF CIGS/VSBY FILL BACK IN THROUGH THE
MORNING WITH RADIATIONAL COOLING. WILL KEEP TAF VFR.

KUTS/KCXO/KIAH/KHOU/KSGR...WITH RAIN MOVING OUT EXPECT VSBY/CIGS
TO IMPROVE SOME. MAY BREAK OUT OF OVC IFR CONDITIONS TO BKN BUT
STILL POSSIBLE FOR IFR TO HOLD ON THROUGH MORNING. CONCERNED
CLEARING COULD OCCUR AS DRIER AIR TRIES TO MIX INTO THE AREA SO
WILL NEED TO WATCH FOR THAT AND MAY GET CIGS TO GO SCT FROM 03Z-
09Z. HRRR 19-21Z RUNS SHOW THIS TREND IN CIGS SCATTERING OUT BUT
THEN GET LOW IFR TO BUILD BACK IN FROM 09Z TO 15Z. TAFS WILL BE
GEARED TOWARDS THESE LOWER CIGS IN THE MORNING AND THEN SLOWLY
GOING IFR/MVFR WITH VFR BY LATE AFTERNOON TOMORROW. WITH HIGH
PRESSURE BUILDING IN...LIGHT WINDS EXPECTED.

KLBX/KGLS...MORE LIKELY THAT CLEARING WILL NOT OCCUR FROM THE WEST
FOR THESE TERMINALS SO HAVE MORE CONFIDENCE IN IFR CIGS HOLDING
THROUGH THE NIGHT. ALSO POSSIBLE FOR CIGS TO DROP IN THE MORNING
TO LOW IFR AS THERE WILL NOT BE ANY DRIER AIR TO MIX AS COMPARED
TO MORE INLAND SIGHTS. OTHERWISE TRENDS SHOULD BE SIMILAR TO
INLAND TERMINALS WITH IFR UNTIL LATE MORNING AND THE MVFR IN THE
AFTERNOON.

39

&&

.PRELIMINARY POINT TEMPS/POPS...
COLLEGE STATION (CLL)      33  58  38  51  35 /  10   0   0  10  10
HOUSTON (IAH)              36  59  42  57  38 /  10   0   0  10  10
GALVESTON (GLS)            43  57  48  56  44 /  10   0   0  10  10

&&

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

$$

DISCUSSION...40
AVIATION/MARINE...39


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