Wind Chill Warning 4, NWS Aberdeen, SD

000 
WWUS43 KABR 151226
WSWABR

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE ABERDEEN SD
626 AM CST THU JAN 15 2009

...BITTERLY COLD WIND CHILLS WILL CONTINUE THROUGH THE MORNING...

.ARCTIC HIGH PRESSURE WILL CONTINUE TO BRING BITTERLY COLD
TEMPERATURES AND WIND CHILLS TO THE REGION THIS MORNING.

MNZ039-046-SDZ007-008-021-023-151600-
/O.CON.KABR.WC.W.0004.000000T0000Z-090115T1600Z/
TRAVERSE-BIG STONE-MARSHALL-ROBERTS-GRANT-DEUEL-
INCLUDING THE CITIES OF...WHEATON...ORTONVILLE...BRITTON...
SISSETON...MILBANK...CLEAR LAKE
626 AM CST THU JAN 15 2009

...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 10 AM CST THIS
MORNING...

A WIND CHILL WARNING REMAINS IN EFFECT UNTIL 10 AM CST THIS
MORNING. 

BITTERLY COLD TEMPERATURES FROM 25 BELOW TO 35 BELOW ZERO WILL
COMBINE WITH NORTHWEST WINDS FROM 5 TO 15 MPH TO CREATE WIND CHILL
VALUES FROM 35 BELOW TO 50 BELOW ZERO THROUGH THE MORNING HOURS.

A WIND CHILL WARNING MEANS THAT THE COMBINATION OF VERY COLD AIR
AND WIND WILL CREATE DANGEROUSLY COLD WIND CHILL VALUES. THIS
COULD RESULT IN FROSTBITE...AND LEAD TO HYPOTHERMIA OR EVEN DEATH
IF PRECAUTIONS ARE NOT TAKEN.

$$
TDK

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ABERDEEN SD
335 AM CST THU JAN 15 2009

.SHORT TERM...TODAY THROUGH SATURDAY
ARCTIC HIGH PRESSURE CENTERED RIGHT OVERHEAD EARLY THIS MORNING
WITH BITTER COLD TEMPERATURES ACROSS THE ENTIRE AREA. RIGHT NOW
ABR SITTING AT 42 BELOW ZERO AND POTENTIAL EXISTS TO GET EVEN A
FEW DEGREES COLDER BY SUNRISE. WIDESPREAD 20S BELOW ZERO AND EVEN
A FEW LOCATIONS IN THE 30S BELOW ZERO. ANDOVER RWIS SITE HAS
REACHED 39 BELOW ZERO THUS FAR AND THIS SEEMS TO BE THE SECOND
COLDEST TEMP IN THE CWA SO FAR. WILL LET THE WIND CHILL ADVISORY
EXPIRE AT 10Z AS WINDS ARE GENERALLY 5 MPH OR LESS. WILL EXTEND
THE WIND CHILL WARNING ACROSS THE FAR EASTERN CWA UNTIL 16Z AS
WINDS ARE STAYING UP AROUND 10 MPH. MARSHALL COUNTY RAWS HAS BEEN
HOVERING AROUND 50 BELOW ZERO WIND CHILL ALL NIGHT WITH WINDS FROM
10 TO 15 MPH. SISSETON ALSO AROUND 10 MPH WITH WIND CHILL NEAR 50
BELOW ZERO.

EXPECTING SUNNY SKIES ACROSS THE AREA FOR LATER TODAY AS HIGH
PRESSURE REMAINS IN CONTROL. WITH TEMPS STARTING OUT EXTREMELY
COLD THIS MORNING AND VERY LITTLE MIXING TODAY...NOT EXPECTING
MUCH RECOVERY. MANY LOCATIONS WILL REMAIN BELOW ZERO ALL DAY AND
WOULD NOT BE SURPRISED IF A FEW SPOTS ACROSS THE FAR EASTERN CWA
STRUGGLED TO REACH 10 BELOW ZERO FOR A HIGH.

HIGH PRESSURE MOVES OFF TO THE SOUTHEAST TONIGHT AS WAA PATTERN
SPREADS OVER THE AREA. WILL HAVE A GOOD DROP OFF IN TEMPS ONCE
AGAIN ACROSS THE EASTERN CWA WHERE SKIES SHOULD BE MOSTLY CLEAR
FOR THE FIRST HALF OF THE NIGHT. COULD SEE LOWS CLOSE TO 20 BELOW
ZERO ACROSS THE EASTERN CWA BEFORE TEMPS STEADY OUT AND SLOWLY
RISE AFTER MIDNIGHT. CONSTRUCTED HOURLY TEMP GRIDS OVERNIGHT TO
REFLECT SLOWLY RISING TEMPS AFTER 06Z AS WARMER AIR ALOFT SPREADS
OVER THE AREA AND SOUTHERLY WINDS PICK UP TO AROUND 10 MPH.

STILL LOOKING AT A WEAK SYSTEM SLIDING SOUTH ACROSS THE AREA LATE
FRIDAY NIGHT INTO SATURDAY AND WILL KEEP SLIGHT CHANCE POPS ACROSS
THE FAR EASTERN CWA. MOST OF THE PRECIP WITH THIS SYSTEM WILL BE
WELL OFF TO OUR EAST BUT A COUPLE MODELS INDICATING POSSIBILITY OF
VERY LIGHT SNOW SHOWERS ACROSS THE FAR EAST.

.LONG TERM...SATURDAY NIGHT THROUGH TUESDAY
MAIN FORECAST CHALLENGE REMAINS THE TEMPERATURES. WESTERN CONUS
RIDGE AND EASTERN CONUS TROF ARE EXPECTED TO PERSIST THROUGH MOST
OF THE EXTENDED...BUT WITH SOME CHANGES COMING TOWARD THE END OF
THE FORECAST. AS THE MID LEVEL RIDGE ADVECTS EAST WE SHOULD START
TO SEE A GRADUAL INFILTRATION OF WARMER AIR FROM THE WEST. BUT...AS
USUAL DURING THIS TIME OF YEAR...ITS DIFFICULT TO SAY EXACTLY HOW
MUCH OF THAT WARMTH WILL TRANSITION DOWN TO WHERE FOLKS LIVE.
ECMWF/GFS MAINTAIN DECENT WEST TO NORTHWEST BREEZES ACROSS THE
REGION FOR THE WEEKEND INTO EARLY NEXT WEEK...AND THIS WIND
DIRECTION IS USUALLY FAIRLY GOOD AT HELPING TO MIX DOWN THE WARMER
AIR ALOFT. MADE ONLY MINOR CHANGES TO THE TEMPERATURE GRIDS SINCE
THEY LOOK APPROPRIATE FOR THE PATTERN. OTHER THAN PERHAPS A FEW
FLURRIES ACROSS THE EASTERN CWA ON SUNDAY...IT SHOULD BE DRY.

&&

.AVIATION...
CLEAR SKIES AND UNLIMITED VISIBILITIES ARE EXPECTED THROUGH
TODAY.

&&

.ABR WATCHES/WARNINGS/ADVISORIES...
SD...WIND CHILL WARNING UNTIL 10 AM CST THIS MORNING FOR DEUEL-GRANT-
     MARSHALL-ROBERTS.

MN...WIND CHILL WARNING UNTIL 10 AM CST THIS MORNING FOR BIG STONE-
     TRAVERSE.

&&

SHORT TERM...TMT
LONG TERM...TDK
AVIATION...TDK

WEATHER.GOV/ABERDEEN

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE ABERDEEN SD
540 AM CST WED JAN 14 2009

MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-151145-
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-
540 AM CST WED JAN 14 2009 /440 AM MST WED JAN 14 2009/

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

BITTERLY COLD WIND CHILLS RANGING FROM 25 TO 45 BELOW ZERO WILL
OCCUR ACROSS THE REGION TODAY...WITH THE COLDEST READINGS DURING
THE MORNING HOURS. WIND CHILL ADVISORIES AND WARNINGS ARE IN
EFFECT FOR TODAY.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY OR TONIGHT.

TMT