FXUS63 KOAX 150947
AFDOAX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
347 AM CST TUE DEC 15 2009

.DISCUSSION...
THE MAIN FORECAST CONCERNS IN THE SHORT TERM WILL BE TEMPERATURES.

THIS MORNING WE ARE STARTING OUT COLD WITH THE CENTER OF SFC HIGH
PRES FM KONL-KHJH. THERE ARE A FEW CLOUDS AROUND
ALBION...OTHERWISE IT IS MOSTLY CLEAR. TEMPERATURES WERE MOSTLY
FROM 5 ABOVE TO 5 BELOW AND WILL CONTINUE TO SEE THESE TEMPS DROP
WITH LIGHT AND VARIABLE WINDS...CLEAR SKIES...DEWPOINTS FROM 2
BELOW TO 10 BELOW.

THE SFC RIDGE WILL REMAIN OVR THE AREA THROUGH MIDDAY...THEN SLIDE
TO THE SOUTHEAST WILL LIGHT NORTHWEST WINDS BECOMING LIGHT SOUTH.
MEANWHILE...THE TROF ALOFT SWINGS THROUGH WITH A WEAK WAVE IN NW
FLOW APPROACHING. THIS FEATURE SHOULD RESULT IN A FEW CLOUDS
DEVELOPING AS WARMER AIR ALOFT SPREADS ACRS NEB. SFC TEMPERATURES
ARE NOT EXPECTED TO RESPOND UNTIL THIS EVENING...SO HAVE COLD
TEMPERATURES TODAY IN THE SINGLE DIGITS AND TEENS. CONSIDERED A
WIND CHILL ADVISORY...MAINLY DUE TO THE COLD
TEMPERATURES...HOWEVER DUE TO THE LACK OF WIND...APPARENT
TEMPERATURES AT TIMES REACHING ADVISORY CRITERIA...BUT ONLY FOR
SHORT PERIODS OF TIME. WIND CHILLS WILL STILL BE COLD FROM -10 TO
-20...HOWEVER WINDS ARE GENERALLY UNDER 10 MPH.

TONIGHT...AM LOOKING FOR EVENING LOWS...THEN STEADY OR RISING
TEMPERATURES WEDNESDAY MORNING. THESE TEMPERATURES HAVE BEEN
REFLECTED IN THE GRIDS.  WARMER AIR MOVES INTO THE AREA AS SFC LOW
PRESSURE DEVELOPS OVR NW NEB WITH A WRMFNT LIFTING INTO SD. ALWAYS
TOUGH TO GET A FEEL FOR HOW WARM TEMPERATURES CAN GET IN THIS
SITUATION WHEN SNOW DEPTHS CONTINUE TO RANGE FOR 4 TO 14 INCHES ON
THE GROUND. WHEN WARM AIR RETURNS AND THERE IS MELTING...CAN GET
FOG AND MORE CLOUDS. DOESN'T LOOK TO BE A WARM ENOUGH AIRMASS FOR
FOG...BUT SHOULD SEE A FEW CLOUDS. WITH BARE GROUND WOULD HAVE
BOOSTED TEMPERATURES INTO THE 30S...HOWEVER LEFT MOSTLY IN THE 20S
TO AROUND FREEZING. WED NIGHT...THERE IS A WEAK WINDSHIFT WITH
CONTINUED DRY WX. AGAIN FOR THUR LEFT IN THE CONSERVATIVE HIGHS IN
THE 20S AND LOWER 30S.

THUR NIGHT INTO FRIDAY...THERE IS A MID LEVEL TROF THAT SWINGS
THRU AND THE TRENDS HAS BEEN TO SPREAD LIGHT PRECIP OVER OUR AREA
OF TO THE SOUTHWEST OF THE LOCAL AREA. CURRENT POPS A GOOD START WITH
EITHER LIGHT SNOW OR FLURRIES MENTIONED MAINLY THU NIGHT THRU FRI
NIGHT AND THEN FLURRIES FOR SAT. STILL LOOKS COLD THIS WEEKEND
INTO EARLY NEXT WEEK.

&&

.AVIATION...
TAF SITES KOFK/KOMA/KLNK

06Z TAFS

VFR CONDITIONS ARE EXPECTED THROUGH WEDNESDAY MORNING AS SURFACE 
HIGH PRESSURE SETTLES OVER EASTERN NEBRASKA ON TUESDAY. LIGHT 
NORTHWEST WINDS UNDER 12KTS WILL GRADUALLY BECOME SOUTHERLY AFTER 
21Z.

&&

.OAX WATCHES/WARNINGS/ADVISORIES...
NE...NONE.
IA...NONE.
&&

$$

ZAPOTOCNY/DERGAN