Area Forecast Discussion
Issued by NWS Aberdeen, SD

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000
FXUS63 KABR 151000
AFDABR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ABERDEEN SD
400 AM CST MON DEC 15 2014

.SHORT TERM...TODAY THROUGH WEDNESDAY

WIDESPREAD LIGHT FREEZING DRIZZLE HAS BEEN OCCURRING FOR THE PAST
SEVERAL HOURS ACROSS A GOOD PORTION OF THE CWA AS AIR MASS IS
STILL CHARACTERIZED BY DEEP MOIST LOW LEVEL MOISTURE BUT DRY MID
LEVELS. WEAK LIFT WITHIN THE MOIST LAYER AS WELL. SOUNDINGS SHOW
THIS TO CONTINUE FOR THE NEXT SEVERAL HOURS...GRADUALLY ENDING
FROM WEST TO EAST. REPORTS OF VERY SLIPPERY ROADS ACROSS THE
REGION AS WELL AS ONE ACCIDENT THUS FAR. HAVE THEREFORE ISSUED A
FREEZING RAIN ADVISORY FOR THE REST OF THE CWA NOT COVERED IN THE
WINTER WX ADVISORY. EXPECTING SEVERAL TRAVEL ISSUES LATER THIS
MORNING WITH ROADS VERY SLICK AT THIS TIME. IN REGARDS TO THE
EXPECTED SNOWFALL FURTHER SOUTH...DOES NOT LOOK TO BE QUITE AS
MUCH AS PREVIOUSLY THOUGHT...SO KNOCKED AN INCH OR TWO OFF ACCUMS
IN MOST AREAS.

STORM SYSTEM MOVES OUT OF THE AREA THIS EVENING AND EXPECTING AN
ABUNDANCE OF LOW CLOUDS BEHIND IT. CURRENT SATELLITE IMAGERY SHOWS
A HUGE EXPANSE OF CLOUDS WELL INTO CANADA. DO NOT SEE THIS GOING
AWAY ANYTIME SOON AS IT MOVES SOUTHEAST OVER THE DAKOTAS INTO
TONIGHT. BREEZY WINDS WILL PERSIST TONIGHT AS WELL...SO THIS
COMBINED WITH THE CLOUDS LED TO AN INCREASE IN OVERNIGHT LOWS.

SURFACE HIGH PRESSURE THEN BUILDS SOUTH OVER THE AREA TUESDAY
NIGHT INTO WEDNESDAY...WITH COLD TEMPS IN THE SINGLE DIGITS AND
LOW TEENS BY SUNRISE WEDNESDAY. OVERALL...TEMPS IN THE SHORT TERM
WILL BE COLDER THAN WHAT WE HAVE SEEN THE PAST SEVERAL DAYS...BUT
WILL ACTUALLY BE CLOSER TO NORMAL FOR THIS TIME OF YEAR.

.LONG TERM...WEDNESDAY NIGHT THROUGH SUNDAY

THE LONG TERM CONTINUES TO LOOK DRY WITH SLIGHTLY ABOVE NORMAL
TEMPERATURES. THE UPPER LEVEL FLOW WILL BE WEAK OVER OUR REGION
WITH THE MAIN STORM TRACK WELL TO OUR SOUTH. EXPECT ONLY WEAK
SYSTEMS TO MOVE ACROSS OUR REGION WITH VERY LITTLE MOISTURE
AVAILABLE. THE SURFACE PRESSURE GRADIENT WILL BE WEAK WITH NOT
MUCH FOR WINDS DURING THE PERIOD. SURFACE HIGH PRESSURE WILL BE
THE DOMINATE WEATHER FEATURE THROUGH THE PERIOD WITH GENERALLY
CLEAR TO PARTLY CLOUDY SKIES. HIGHS THROUGH THE PERIOD SHOULD BE
MOSTLY IN THE UPPER 20S TO THE MID 30S ACROSS THE CWA.

&&

.AVIATION...

06Z TAFS FOR THE KABR...KATY...KPIR AND KMBG TERMINALS

MVFR VSBYS IN FOG WILL CONTINUE ACROSS PARTS OF THE CWA THROUGH
THE OVERNIGHT HOURS...MAINLY ALONG THE INTERSTATE 29
CORRIDOR...AFFECTING KATY. IFR/MVFR CIGS WILL REMAIN IN PLACE OVER
THE ENTIRE AREA THROUGH THE TAF PERIOD. LIGHT RAIN/FREEZING RAIN
WILL AFFECT THE SOUTHERN CWA DURING THE OVERNIGHT HOURS...WITH
SNOW AND LIGHT FREEZING RAIN POSSIBLE ACROSS THE SOUTHERN CWA LATE
TONIGHT THROUGH THE DAY MONDAY. THE AREA MOST LIKELY TO SEE
ACCUMULATING SNOW WILL BE ALONG AND SOUTH OF A LINE FROM
WATERTOWN TO PIERRE.

&&

.ABR WATCHES/WARNINGS/ADVISORIES...

SD...FREEZING RAIN ADVISORY UNTIL 9 AM CST /8 AM MST/ THIS MORNING
     FOR BROWN-CAMPBELL-CORSON-DAY-DEWEY-EDMUNDS-FAULK-HAND-
     HUGHES-HYDE-MARSHALL-MCPHERSON-POTTER-ROBERTS-SPINK-STANLEY-
     SULLY-WALWORTH.

     WINTER WEATHER ADVISORY UNTIL 6 PM CST THIS EVENING FOR BUFFALO-
     CLARK-CODINGTON-DEUEL-GRANT-HAMLIN-JONES-LYMAN.

MN...FREEZING RAIN ADVISORY UNTIL 9 AM CST THIS MORNING FOR BIG STONE-
     TRAVERSE.

&&

$$
SHORT TERM...TMT
LONG TERM...MOHR
AVIATION...PARKIN

WEATHER.GOV/ABERDEEN




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