FXUS64 KOHX 252328
AFDOHX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
528 PM CST FRI DEC 25 2009
.UPDATE...
&&
.AVIATION...
LOW CLOUDS BEGINNING TO LIFT AT BNA AND WILL BEGIN AT CSV SHORTLY.
EXPECT SCATTERED STRATOCU AT BNA BY 01Z AND SHOULD SCATTER OUT AT
CSV BY 05Z. NO FOG ISSUES TONIGHT AS WINDS WILL STAY UP PLUS TEMP
DEWPOINT SPREAD IS QUITE LARGE. CRAS FORECAST MAY BE TRYING TO CLEAR
A LITTLE TOO FAST ACROSS THE AREA THIS EVENING SO BASICALLY USED
EXTRAPOLATION WITH WX DEPICTION CHARTS.
BOYD
&&
.PREV DISCUSSION... /ISSUED 322 PM CST FRI DEC 25 2009/
SCATTERED FLURRIES WORKING THERE WAY EASTWARD ACROSS THE MID STATE
THIS AFTERNOON. SAT IMAGERY DOES SHOW CLEARING BACK ACROSS AR AND
MS. OVERALL TREND IS FOR THAT CLEARING AREA TO EXPAND OUR WAY
OVERNIGHT AS THE COLDER AIRMASS SETTLES IN.
DEW POINTS ARE NOT TOO TERRIBLY LOW UPSTREAM AND THE POLAR SFC HIGH
IS STILL LOCATED WELL TO OUR NORTH. THUS...LOOK FOR WEST/SW WINDS TO
CONTINUE OVERNIGHT WITH TEMPS FALLING TO A FEW DEGREE BELOW FREEZING
BY 12Z SAT FOR MOST AREAS.
PARTLY CLOUDY SKIES TO RETURN FOR SAT AND SAT NT. 850 MB TEMPS WILL
BE QUITE LOW SO I WILL LEAN TOWARD THE COLDER MET NUMBERS FOR HIGH
TEMPS SAT AND SUN.
ON SUNDAY NT...A WEAK DISTURBANCE WILL MOVE ACROSS THE AREA. THIS
COULD PRODUCE A FEW FLURRIES OR PERHAPS A LIGHT SNOW SHOWER SUNDAY
NIGHT ACROSS NORTHERN ZONES AND THE PLATEAU.
IN THE EXTENDED FCST...A SERIES OF WEAK SFC LOWS WILL DEVELOP ACROSS
THE WESTERN GULF TUES THROUGH THU. THESE FEATURES WILL MOVE EAST AND
ATTEMPT TO SPREAD MOISTURE NORTHWARD TOWARD TN. COLDER AIR WILL
ARRIVE LATE IN THE WEEK SO WILL INCLUDE A SNOW RAIN MIX AS WE MOVE
INTO THU AND FRI.
OVERALL...TEMPS LOOK TO BE ON THE COOL SIDE...PARTICULARLY DAYTIME
MAX TEMPS.
.PRELIMINARY POINT TEMPS/POPS...
NASHVILLE 29 44 28 40 / 10 10 10 10
CLARKSVILLE 28 42 27 40 / 10 10 10 10
CROSSVILLE 25 36 27 39 / 10 10 10 10
COLUMBIA 29 45 28 41 / 10 10 10 10
LAWRENCEBURG 28 44 27 41 / 10 10 10 10
WAVERLY 29 43 28 39 / 10 10 10 10
&&
.OHX WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
