FXUS62 KJAX 241413
AFDJAX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
913 AM EST THU DEC 24 2009
.UPDATE...PERSISTENT FOG AND LOW CLOUDS EXTEND ALONG THE I-10
CORRIDOR NORTH ACROSS MUCH OF SE GA. HIGH CLOUDS MOVING IN THE WRN
ZONES WILL BLOCK SOLAR INSOLATION AND FOG/LOW CLOUDS MAY HANG
AROUND UNTIL LATE MORNING. WILL RE-ISSUE ZONES WHEN OBS BEGIN
SHOWING VISIBILITY IMPROVEMENTS. NAM BUFR SOUNDING CORRESPONDS
WELL TO THE KJAX 12Z SOUNDING...SHOWING THE NE FLOW AT THE SURFACE
DUE TO A WEAK COASTAL TROUGH AND E TO SE JUST OFF THE DECK. VAD
WIND PROFILE SHOWS A SLIGHT VEERING OF LLVL WINDS OVER PAST COUPLE
HOURS AND EXPECT WINDS TO VEER TO SE WITH A WEAKENING OF THE
TROUGH DURING THE AFTN. THUS TEMPS WILL BE A BIT WARMER TODAY WITH
LOW/MID 70S IN NE FL AND MID 60S TO NEAR 70 FOR SE GA. MAX TEMP
WILL LIKELY OCCUR EARLY IN AFTN BEFORE SKIES BECOME MOSTLY CLOUDY
DUE TO THE APPROACHING FRONTAL SYSTEM.
&&
.AVIATION...VQQ IS ON THE EASTERN EDGE OF THE FOG MENTIONED IN THE
UPDATE SECTION AND HAS RECENTLY IMPROVED TO MVFR CONDS. OTHER
TERMINALS WILL BE VFR. WINDS MIXING DOWN WILL BRING GUSTS UP TO
20KT THIS AFTN. STRONG LOW LEVEL JET COMES IN DURING THE EVE AND
HAVE LLWS AT ALL TERMINALS AT 03Z.
&&
.MARINE...EAST WINDS INCREASE THROUGHOUT THE DAY WITH APPROACH OF
FRONTAL SYSTEM. HAVE CONTINUED WITH PREVIOUS FCST OF SCA OFFSHORE BY
20Z AND HAVE BEGUN SCA NEAR SHORE BY 01Z. MAY HAVE OCNL GUSTS TO
GALE FORCE OFFSHORE LATER TONIGHT INTO FRI AM. STRONG LOW PRESSURE
TRACKS NORTH OF THE WATERS TONIGHT WITH TRAILING COLD FRONT PUSHING
THROUGH FRIDAY AFTERNOON. EAST WINDS VEER TO SOUTH BY FRI AM AND
INTO THE WEST FRI AFTERNOON AND DECREASE WITH PASSAGE OF COLD FRONT.
NUMEROUS SHOWERS WITH ISOLATED STORMS BEGINNING TONIGHT TAPERING OFF
WITH FRONTAL PASSAGE FRI PM.
&&
.PRELIMINARY POINT TEMPS/POPS...
AMG 67 55 66 35 / 10 90 70 10
SSI 68 62 70 44 / 0 100 90 10
JAX 72 61 72 42 / 0 90 80 10
SGJ 73 64 74 47 / 0 80 80 10
GNV 75 59 73 42 / 10 80 70 10
OCF 75 61 74 45 / 10 70 70 10
&&
.JAX WATCHES/WARNINGS/ADVISORIES...
FL...NONE.
GA...NONE.
AM...SMALL CRAFT ADVISORY FROM 3 PM THIS AFTERNOON TO 7 AM EST
SATURDAY FOR ALTAMAHA SOUND GA TO FERNANDINA BEACH FL 20 NM
TO 60 NM OFFSHORE-FERNANDINA BEACH TO ST AUGUSTINE FL 20 NM
TO 60 NM OFFSHORE-ST AUGUSTINE TO FLAGLER BEACH FL 20 NM TO
60 NM OFFSHORE.
SMALL CRAFT ADVISORY FROM 8 PM THIS EVENING TO 11 AM EST FRIDAY
FOR ALTAMAHA SOUND GA TO FERNANDINA BEACH FL OUT 20 NM-
FERNANDINA BEACH TO ST AUGUSTINE FL OUT 20 NM-ST AUGUSTINE
TO FLAGLER BEACH FL OUT 20 NM.
&&
$$
TRABERT/PRESNALL
