FXUS63 KGID 151124
AFDGID

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HASTINGS NE
524 AM CST TUE DEC 15 2009

.AVIATION...12Z KGRI TAF. SURFACE HIGH PRESSURE REMAINS IN CONTROL
WITH COLD AND DRY WEATHER EXPECTED TO CONTINUE. CLEAR TO MOSTLY
CLEAR SKIES ARE ON TAP UNTIL THIS EVENING WHEN A SCATTERED
HIGH DECK COULD START TO MOVE IN. WINDS WILL BE LIGHT THROUGHOUT
THE PERIOD...INITIALLY FROM THE WEST THIS MORNING AND THEN MORE
SOUTHERLY BY AFTERNOON.

&&

.PREV DISCUSSION... /ISSUED 327 AM CST TUE DEC 15 2009/ 

DISCUSSION...MAIN FORECAST CONCERNS WILL BE TEMPERATURES AND A
CHANCE OF SNOW THURSDAY NIGHT THROUGH FRIDAY NIGHT.

SCATTERED MID LEVEL CLOUDS CONTINUE TO MOVE THROUGH THE AREA
EARLY THIS MORNING AND KEEP TEMPERATURES FROM FALLING TOO FAST
SINCE THEY WARM A FEW DEGREES AS THE CLOUDS MOVE OVER. SURFACE
ANALYSIS INDICATES THAT HIGH PRESSURE CONTINUES TO BUILD INTO THE
AREA THIS MORNING. THIS HIGH PRESSURE SYSTEM SHOULD MOVE OFF THE
EAST THIS AFTERNOON. THIS WILL ALLOW WINDS TO TURN TO THE SOUTH
DURING THE AFTERNOON AND THERE IS SOME WARM ADVECTION WITH
TEMPERATURES WARMING AT 850MB. THE PROBLEM WITH THIS IS THAT THERE
IS STILL A VERY STUBBORN SHALLOW LAYER OF COLD AIR AT THE SURFACE.
TEMPERATURES WILL BE WARMER THAN YESTERDAY...BUT STILL EXPECT THAT
WARM TEMPERATURES WILL BE ELUSIVE ACROSS THE FORECAST AREA. THE
SOUTH WINDS AND WARM ADVECTION ALOFT CONTINUES THROUGH THE NIGHT
AND TEMPERATURES SHOULD FALL BACK INTO THE SINGLE DIGITS ACROSS
THE FORECAST AREA.

THE ARCTIC AIR AT THE SURFACE FINALLY WARMS A BIT ON WEDNESDAY.
THE SNOW ON THE GROUND WILL CONTINUE TO KEEP COOLER AIR IN THE
AREA...BUT EXPECT THAT WE COULD APPROACH FREEZING. THE WARMER AIR
CONTINUES TO LINGER ACROSS THE AREA ON THURSDAY DESPITE A WEAK
COLD FRONT THAT MOVES THROUGH WEDNESDAY NIGHT. THE COLDER AIR IS
SLOWER TO MOVE INTO THE AREA AND THURSDAY WILL REMAIN A LITTLE
WARMER.

AN UPPER LEVEL WAVE STARTS TO MOVE INTO THE AREA THURSDAY NIGHT.
AS THE WAVE MOVES IN COLDER AIR SETTLES BACK INTO THE AREA...AS
WELL AS AN INCREASE IN MOISTURE LATE THURSDAY NIGHT. LIGHT SNOW IS
POSSIBLE IN THE EVENING IN THE NORTHWEST AND SHOULD SPREAD ACROSS
THE FORECAST AREA DURING THE NIGHT. THE LIGHT SNOW CONTINUES
THROUGH FRIDAY WHEN THE UPPER WAVE MOVES THROUGH. LIGHT SNOW OR
FLURRIES WILL CONTINUE FRIDAY NIGHT AS COLDER AIR FILTERS BACK
INTO THE AREA.

&&

.GID WATCHES/WARNINGS/ADVISORIES...
NE...NONE.
KS...NONE.
&&

$$