FXUS63 KLMK 251710
AFDLMK

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LOUISVILLE KY
1210 PM EST FRI DEC 25 2009

...UPDATED AVIATION DISCUSSION...

.SHORT TERM (TODAY AND TONIGHT)...

LOW PRESSURE NEAR KEOKUK IOWA AT 12Z WILL MOVE ONLY TO NEAR FT DODGE 
IOWA BY THIS EVENING AND THEN RIGHT BACK TO SOUTHERN IOWA BY 
SATURDAY MORNING AS IT RESPONDS TO THE FUJIWHARA EFFECT OF UPPER 
LOWS PINWHEELING AROUND EACH OTHER HIGH ABOVE THE MIDDLE MISSISSIPPI 
VALLEY. MUCH OF THE RAIN ASSOCIATED WITH THIS SYSTEM WILL HAVE 
EXITED THE LMK CWFA BY 12Z THIS MORNING...WITH SCATTERED LEFT-OVER 
SHOWERS ENDING FROM SOUTHWEST TO NORTHEAST OVER THE COURSE OF THE 
REST OF THE MORNING. THIS AFTERNOON SHOULD BE MOSTLY DRY OTHER THAN 
PERHAPS A FEW LINGERING LIGHT RAIN SHOWERS OVER THE BLUEGRASS. DRY 
WEATHER WILL THEN CONTINUE TONIGHT...THOUGH A FEW FLURRIES MAY GET 
SQUEEZED OUT OF LOW CLOUDS SWEEPING INTO THE REGION FROM THE 
NORTHWEST.

WINDS TODAY WILL LIKELY NOT QUITE REACH ADVISORY CRITERIA. HOWEVER 
IT WILL STILL BE A PLENTY WINDY DAY SO WILL LET THE HEADLINE RIDE 
FOR NOW. ALSO...OFFICES TO THE EAST AND WEST ARE PLANNING ON 
CONTINUING THEIR RESPECTIVE HEADLINES...SO KEEPING OURS WILL PUT US 
IN BETTER AGREEMENT WITH OUR NEIGHBORS. DAY SHIFT CAN CANCEL THE 
ADVISORY EARLY IF WINDS ARE SIGNIFICANTLY BELOW ADVISORY LEVELS.

TODAY/S HIGH TEMPERATURES WILL OCCUR AT SUNRISE. THE MERCURY WILL 
THEN TUMBLE INTO THE LOWER AND MIDDLE 30S BY LATE AFTERNOON...AND 
BOTTOM OUT TONIGHT IN THE MIDDLE 20S.

THANKS TO PAH FOR COORD.

.LONG TERM (SATURDAY - THURSDAY)...

SATURDAY - MONDAY...

MERRY CHRISTMAS!!

WITH THE UPPER LEVEL LOW SPINNING OVER THE LOWER GREAT LAKES 
REGION...WE/LL SEE FLURRY/LIGHT SNOW CHANCES SAT-MON.  THE BEST 
CHANCE FOR LIGHT SNOW WILL BE SUNDAY INTO SUNDAY EVENING AS THE LOW 
BEGINS TO MOVE EAST FORCING VORTICITY NEAR THE NORTHERN PORTIONS OF 
OUR AREA.  WE COULD SEE SOME LIGHT SNOW ACCUMS OVER OUR NORTHERN 
FORECAST AREA OUT OF THIS WAVE.  WE/LL GO BACK TO FLURRIES FOR 
MONDAY AND THEN GRADUALLY DRYING MONDAY NIGHT AS THE LOW BECOMES 
WELL REMOVED FROM THE AREA.

TEMPS WILL BE IN THE 30S TO AROUND 40 FOR HIGHS...WITH LOWS IN THE 
IN THE 20S FOR THE MOST PART.  AS PREVIOUSLY NOTED...THE COLDEST DAY 
LOOKS TO BE MONDAY ESPECIALLY IF WE HAVE SOME SNOW COVER ON THE 
GROUND FROM SUNDAY/S WAVE.

THE REST OF THE FORECAST REMAINS UNCHANGED.  THE PREVIOUS DISCUSSION 
IS AS FOLLOWS:

TUESDAY - THURSDAY...

THE NEXT WORK WEEK SHOULD BE MOSTLY DRY...WITH TEMPS GENERALLY 
COLDER THAN NORMAL FOR THIS TIME OF YEAR. A SLOW "WARM-UP" WILL TAKE 
PLACE THROUGH THURSDAY WITH HIGHS WED AND THURS IN THE LOW 40S SOUTH 
AND UPPER 30S NORTH. THE UPPER LEVEL FLOW BECOMES WSWRLY...WITH A 
WEAK SYSTEM TRAVERSING THE GULF STATES WEDNESDAY. THIS WILL BRING 
CLOUDY SKIES TO OUR SRN CWA. BY THURSDAY...BROAD TROUGHING WILL 
AFFECT THE CENTRAL CONUS...WITH A WEAK UPPER TROUGH PASSING THROUGH 
THE LOWER GREAT LAKES AND POSSIBLY THIS FAR SOUTH THURSDAY-THURSDAY 
NIGHT. THIS COULD GENERATE LIGHT SNOW SHOWERS FOR OUR AREA...SO HAVE 
INSERTED THIS INTO THURSDAY NIGHT'S GRIDS. OTHERWISE...LOOKS TO BE A 
MOSTLY DRY WEEK.

&&

.AVIATION (18Z TAF ISSUANCE)...

A DEEP SURFACE LOW WILL MEANDER AROUND IOWA FOR THE NEXT 24 HOURS 
BEFORE TRACKING TOWARD NEW ENGLAND. THIS WILL KEEP THE REGION IN A 
BRISK SOUTHWEST FLOW WITH WIND GUSTS THIS AFTERNOON AND SATURDAY TO 
35 MPH. MVFR CIGS WILL REMAIN IN PLACE ACROSS THE REGION WITH VFR 
VSBYS. LIGHT RAIN ACROSS CENTRAL KENTUCKY AT 17Z WILL DISSIPATE 
EARLY THIS AFTERNOON.

&&

.LMK WATCHES/WARNINGS/ADVISORIES...
KY...NONE.
IN...NONE.
&&

$$

SHORT TERM........13
LONG TERM.........AML
AVIATION..........JA