999 
FXUS62 KTAE 201441
AFDTLH

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TALLAHASSEE FL
945 AM EST WED JAN 20 1999

AMPLIFYING UPPER FLOW AS S/WVS DIG TROF OVR THE SRN ROCKIES/SRN
PLAINS BY THU NIGHT WILL CAUSE OUR UPR FLO TO BECOME MORE SWLY. 
WEAK PERTURBATION MENTIONED BY PREVIOUS FCSTR NOW APPEARS AS WEAK
THERMAL BOUNDARY WITH WEAK ISENTROPIC LIFT WHICH IS PRODUCING SOME
12-15K FT SHWRS OVR WRN PORTIONS OF THE FA. WHILE NO RPTG STNS HV
RPTD RAIN...MANY ARE STILL PLAGUED BY LO VIS AND CIGS. SFC HI
MOSTLY OFFSHORE ALREADY...WITH MEASURABLE AREA WINDS GNLY SLY...
ALREADY SEE LO LVL RH ABV 70 PERCENT. MODELS CONTINUE THIS ONSHORE
FLO...SO EXPECT MORE FG/STRATUS THU MORN. WED MORNING SOUNDING MORE
UNSTABLE THAN YDY...MUCH MORE MOIST...BUT DO NOT EXPECT SIGNIFICANT
ACTION TODAY...JUST SETTING THE STAGE FOR THE MAJOR VORT MAX
APPROACHING THU. 

XPCT LOW CIGS AND FG TO IMPROVE BY MIDDAY WITH INSOLATION...GIVING
WAY TO MOSTLY FAIR AND ABV NORM TEMPS. GETTING A SLOWER START THAN
YDY ON BUILDING THE TEMP...BUT IF WE CAN GET RID OF THESE CLDS
STILL THINK WE WILL SEE LO 70S PER ZONES. XPCT HI CLDS INCRSG LATER
TODAY CD HOLD TEMPS UP TONIGHT...BUT DOUBT THE LO THE MID 50S. AT
THIS TIME...LOOKS LIKE UPR 40S TO LOW 50S. AGREE THAT FWC SEEMS TO
BE DOING A BETTER JOB ON TEMPS. NO POPS TDY...BUT CD SEE SOME ISOLD
SHWRS IN WRN PORTIONS OF CWA. WILL UPDATE ZONES TO REMOVE MENTION
OF FOG.  

AFD