Wind Chill Advisory 1, NWS Aberdeen, SD

031 
WWUS43 KABR 101509
WSWABR

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE ABERDEEN SD
909 AM CST MON DEC 10 2012

MNZ039-046-SDZ005>008-010-011-017>023-037-101615-
/O.EXP.KABR.WC.Y.0001.000000T0000Z-121210T1500Z/
TRAVERSE-BIG STONE-MCPHERSON-BROWN-MARSHALL-ROBERTS-EDMUNDS-DAY-
FAULK-SPINK-CLARK-CODINGTON-GRANT-HAMLIN-DEUEL-HAND-
INCLUDING THE CITIES OF...WHEATON...ORTONVILLE...EUREKA...
ABERDEEN...BRITTON...SISSETON...IPSWICH...WEBSTER...FAULKTON...
REDFIELD...CLARK...WATERTOWN...MILBANK...CASTLEWOOD...
CLEAR LAKE...MILLER
909 AM CST MON DEC 10 2012

...WIND CHILL ADVISORY HAS EXPIRED...

TEMPERATURES ARE GRADUALLY WARMING WHICH WILL ALLOW WIND CHILLS TO
SLOWLY WARM. THEREFORE THE ADVISORY WAS ALLOWED TO EXPIRE.  

$$

TDK

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE ABERDEEN SD
607 PM CST SUN DEC 9 2012

.UPDATE...
CONDITIONS HAVE IMPROVED SIGNIFICANTLY ACROSS THE AREA AS WIND
SPEEDS DIMINISH WITH SUNSET. VISIBILITIES HAVE RISEN TO SIX MILES
OR BETTER ACROSS THE WEST AND CENTRAL...WITH ONE MILE OR HIGHER
ACROSS THE FAR EAST. NEITHER WINTER WEATHER ADVISORY OR BLIZZARD
CONDITIONS ARE BEING MET ANY LONGER...SO HAVE LET ALL HEADLINES
EXPIRE. NO OTHER CHANGES MADE TO THE FORECAST AT THIS TIME.

&&
.PREVIOUS DISCUSSION...
.SHORT TERM...TONIGHT THROUGH TUESDAY NIGHT
CONDITIONS CONTINUE TO IMPROVE ACROSS THE FORECAST AREA WITH
OBSERVATIONS AND WEB-CAMS REPORTING DECENT VISIBILITIES. THE
WORST CONDITIONS ARE CONFINED TO THE I-90 CORRIDOR AND THE
PRAIRIE COTEAU. THOUGHT ABOUT CANCELING A SMALL PORTION OF THE
BLIZZARD WARNING...BUT WILL LEAVE HEADLINES ALONE FOR NOW. NO
TRAVEL ADVISED IS STILL ADVERTISED FOR HIGHWAYS 14 AND 81...AS
WELL AS PORTIONS OF I-29 AND I-90. IN FACT...I-29 FROM SISSETON
TO SIOUX FALLS IS CLOSED. GFS LAMP GUIDANCE...AS WELL AS HI-RES
MODELS SUGGEST WINDS WILL FALL BELOW 25 KNOTS BY 00Z ALONG THE
I-29 CORRIDOR...WHICH SHOULD LEAD TO IMPROVED VISIBILITIES.

CLEARING SKIES TONIGHT...ALONG WITH LIGHT WINDS AND FRESH SNOW
COVER WILL RESULT IN LOW TEMPERATURES IN THE SINGLE DIGITS TO THE
TEENS BELOW ZERO. APPARENT TEMPERATURES MAY REACH WIND CHILL
CRITERIA IN LOCALIZED AREAS BY MONDAY MORNING. WILL HOLD OFF ON
ISSUING A WIND CHILL ADVISORY FOR NOW AS WINDS SHOULD REMAIN
BELOW 5 MPH WHEN THE COLDEST TEMPERATURES TAKE PLACE.

WEAK WAA DEVELOPS THROUGH THE REST OF THE SHORT TERM WITH
TEMPERATURES SLOWLY WARMING TO NEAR CLIMATOLOGY BY TUESDAY. A WEAK
UPPER LEVEL DISTURBANCE MOVING ACROSS THE REGION ON MONDAY NIGHT
MAY PRODUCE SCATTERED FLURRIES FOR LOCATIONS NORTH OF HIGHWAY 212.

.LONG TERM...WEDNESDAY THROUGH SUNDAY
TEMPERATURES WILL BE THE MAIN FORECAST CHALLENGE THROUGH THE LONG
TERM...PARTICULARLY NOW THAT THERE IS WIDESPREAD SNOW COVER.

THE FLOW PATTERN ACROSS THE NORTHERN PLAINS SHOULD FAVOR S/W
RIDGING FOR THE FIRST PART OF THE FORECAST AS ENERGY DIGS INTO THE
SOUTHWEST CONUS...AND NORTHERN STREAM ENERGY TRACKS TO THE NORTH
OF THE REGION. THAT SOUTHWEST CONUS ENERGY THEN EJECTS OUT INTO THE
CENTRAL PART OF THE COUNTRY NEXT WEEKEND. HOWEVER...FORECASTER
CONFIDENCE ON THE TRACK OF THESE SYSTEMS IS LOW...ESPECIALLY SINCE
THE MODELS HAVE NOT BEEN VERY CONSISTENT FOR THE LAST COUPLE RUNS.
FOR NOW...WILL KEEP THE FORECAST MAINLY DRY UNTIL A TREND CAN
BECOME ESTABLISHED. TEMPERATURES WILL LIKELY AVERAGE OUT BELOW
NORMAL GIVEN THE PRISTINE SNOW COVER.

&&

.AVIATION...
00Z TAFS FOR THE KABR...KATY...KPIR AND KMBG TERMINALS

VFR CONDITIONS WILL PREVAIL ACROSS THE AREA TONIGHT AND THROUGH
THE DAY MONDAY. WIND SPEEDS CONTINUE TO DIMINISH AND LOOK TO
BECOME LIGHT AND VARIABLE ACROSS THE ENTIRE CWA BY 05Z. SOME CLOUD
COVER WILL SPREAD OVER THE REGION LATE IN THE TAF PERIOD...WITH
OCCASIONAL PERIODS OF MVFR CIGS POSSIBLE AFTER 19Z MONDAY.

&&

.ABR WATCHES/WARNINGS/ADVISORIES...
SD...NONE.
MN...NONE.
&&

UPDATE...PARKIN
SHORT TERM...SD
LONG TERM...TDK
AVIATION...PARKIN

WEATHER.GOV/ABERDEEN

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ABERDEEN SD
440 AM CST SUN DEC 9 2012

MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-101045-
TRAVERSE-BIG STONE-CORSON-CAMPBELL-MCPHERSON-BROWN-MARSHALL-
ROBERTS-WALWORTH-EDMUNDS-DAY-DEWEY-POTTER-FAULK-SPINK-CLARK-
CODINGTON-GRANT-HAMLIN-DEUEL-STANLEY-SULLY-HUGHES-HYDE-HAND-JONES-
LYMAN-BUFFALO-
440 AM CST SUN DEC 9 2012 /340 AM MST SUN DEC 9 2012/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL
MINNESOTA...CENTRAL SOUTH DAKOTA...NORTH CENTRAL SOUTH DAKOTA AND
NORTHEAST SOUTH DAKOTA.

.DAY ONE...TODAY AND TONIGHT
STRONG NORTHWEST WINDS AND LIGHT SNOW SHOWERS WILL CONTINUE
THROUGH MUCH OF THE DAY. THIS WILL RESULT IN BLOWING SNOW AND
NEAR ZERO VISIBILITY AT TIMES. WINDS WILL BEGIN TO TAPER OFF AND
CONDITIONS WILL IMPROVE FROM WEST TO EAST LATER THIS AFTERNOON AND
TONIGHT. VERY COLD AIR WILL BE IN PLACE OVERNIGHT AND WIND CHILL
READINGS WILL DROP TO THE 20S BELOW ZERO.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...
SPOTTERS ARE ENCOURAGED TO REPORT HAZARDOUS CONDITIONS TO LOCAL
LAW ENFORCEMENT OR TO THE NATIONAL WEATHER SERVICE OFFICE IN
ABERDEEN.