FXUS63 KGID 160932
AFDGID
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HASTINGS NE
332 AM CST WED DEC 16 2009
.DISCUSSION...MAIN FORECAST CONCERNS WILL BE TEMPERATURES AND A
CHANCE OF SNOW THURSDAY NIGHT THROUGH FRIDAY.
CIRRUS HAS STARTED TO STREAM INTO THE AREA EARLY THIS MORNING. THE
COLD HIGH PRESSURE SYSTEM THAT HAS INFLUENCED THE AREA FOR THE
LAST COUPLE OF DAYS IS FINALLY MOVING OFF TO THE EAST. WINDS HAVE
TURNED TO THE SOUTH AND INCREASED. THE WINDS HAVE KEPT
TEMPERATURES FROM FALLING AND MOST LOCATIONS HAVE HAD STEADY OR
SLOWLY RISING TEMPERATURES DURING THE NIGHT.
SOUTH WINDS ARE EXPECTED TO CONTINUE TODAY. THERE IS ALSO WARM
ADVECTION ALOFT. WITH THE WINDS INCREASING DURING THE DAY THIS
SHOULD BE ENOUGH TO DISLODGE THE SHALLOW COLD AIR AT THE SURFACE.
TODAY SHOULD BE QUITE A BIT WARMER THAN THE PAST COUPLE OF DAYS
DESPITE THE CLOUDS THAT WILL CONTINUE TO MOVE INTO THE AREA.
TONIGHT A WEAK COLD FRONT WILL MOVE THROUGH THE AREA. TEMPERATURES
ARE NOT REALLY COLDER BEHIND THE COLD FRONT AND TEMPERATURES WILL
ACTUALLY BE WARMER ON THURSDAY SINCE THE WINDS WILL BE FROM THE
WEST AND THERE MAY BE A LITTLE MORE SUNSHINE. TEMPERATURES TODAY
AND THURSDAY WILL STILL BE A BIT BELOW NORMAL BUT COMPARED TO THE
PAST FEW DAYS IT WILL BE MUCH WARMER.
AN UPPER LEVEL WAVE MOVES INTO THE FORECAST AREA THURSDAY NIGHT
INTO FRIDAY. MODELS HAVE SOME DIFFERENCES WITH THIS SYSTEM. THE
MOST NOTICEABLE DIFFERENCE IS HOW MUCH MOISTURE IS AVAILABLE AND
THEREFORE HOW MUCH PRECIPITATION THE MODEL PRODUCES...ALTHOUGH
THERE ARE SOME TIMING AND LOCATION DIFFERENCES AS WELL. THE LATEST
TREND IS TO HAVE LESS MOISTURE. HAVE KEPT A CHANCE FOR SOME LIGHT
SNOW BUT HAVE LOWERED POPS. WITH LESS MOISTURE EXPECT THAT THERE
WILL NOT BE AS MUCH CHANCE FOR PRECIPITATION. THIS SYSTEM IS
MOVING THROUGH PRETTY FAST AND DO NOT EXPECT THAT THERE WILL BE
MUCH SNOW ACCUMULATION. COOLER AIR MOVES INTO THE AREA THURSDAY
NIGHT AND THE PRECIPITATION SHOULD BE ALL SNOW. TEMPERATURES WILL
BE A LITTLE COOLER ON FRIDAY. THERE MAY BE A FEW FLURRIES THAT
LINGER INTO FRIDAY EVENING BUT SHOULD COME TO AN END OVERNIGHT.
MADE NO CHANGES TO SATURDAY AND BEYOND.
&&
.PREV DISCUSSION... /ISSUED 959 PM CST TUE DEC 15 2009/
AVIATION...06Z KGRI TAF. VFR CONDITIONS FOR THIS FORECAST. HIGH
PRESSURE STILL GENERALLY IN CONTROL. SOUTH WIND WILL BECOME MORE
SOUTHWEST OVERNIGHT AS A WARM FRONT/TROUGH MOVES THROUGH. WIND
WILL TURN NORTH BY WEDNESDAY AFTERNOON AFTER A COLD FRONT MOVES
THROUGH...THEN BECOMING LIGHT EAST BY WEDNESDAY EVENING. WIND
SHOULD REMAIN RELATIVELY LIGHT THROUGHOUT THIS FORECAST. HIGH
CEILINGS WILL ENTER OVERNIGHT AND EVENTUALLY THICKEN AND LOWER TO
MID-LEVEL BY WEDNESDAY AFTERNOON. THEN CEILINGS SHOULD BECOME MORE
HIGH-LEVEL ONCE AGAIN ON WEDNESDAY EVENING.
&&
.GID WATCHES/WARNINGS/ADVISORIES...
NE...NONE.
KS...NONE.
&&
$$
