HAZARDOUS WEATHER OUTLOOK
Issue Date: 513 AM MST WED DEC 23 2009
Expiration: 700 AM MST THU DEC 24 2009

Expires:200912241400;;
FLUS43 KUNR 231210
HWOUNR
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RAPID CITY SD
437 AM MST WED DEC 23 2009
SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058-
071-241400-
BENNETT-BUTTE-CENTRAL BLACK HILLS-CUSTER CO PLAINS-FALL RIVER-HAAKON-
HARDING-HERMOSA FOOT HILLS-JACKSON-MELLETTE-NORTHEASTERN CROOK-
NORTHERN BLACK HILLS-NORTHERN CAMPBELL-NORTHERN FOOT HILLS-
NORTHERN MEADE CO PLAINS-PENNINGTON CO PLAINS-PERKINS-RAPID CITY-
SHANNON-SOUTHERN BLACK HILLS-SOUTHERN CAMPBELL-SOUTHERN FOOT HILLS-
SOUTHERN MEADE CO PLAINS-STURGIS/PIEDMONT FOOT HILLS-TODD-TRIPP-
WESTERN CROOK-WESTON-WYOMING BLACK HILLS-ZIEBACH-
437 AM MST (537 AM CST) WED DEC 23 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN SOUTH DAKOTA AND
NORTHEASTERN WYOMING.
...WINTER STORM WARNING FOR THE BLACK HILLS AND BEAR LODGE MOUNTAINS
   TODAY THROUGH FRIDAY AFTERNOON...
...WINTER STORM WARNING FOR SOUTH CENTRAL AND PARTS OF WESTERN
   SOUTH DAKOTA THIS AFTERNOON THROUGH FRIDAY AFTERNOON...
...WINTER WEATHER ADVISORY FOR THE REMAINDER OF NORTHEAST WYOMING
   TODAY AND TONIGHT...
...WINTER WEATHER ADVISORY FOR THE PLAINS OF FAR WESTERN SOUTH
   DAKOTA TODAY THROUGH FRIDAY AFTERNOON...
.DAY ONE...TODAY AND TONIGHT
FREEZING FOG OVER THE EASTERN AND NORTHERN FOOTHILLS OF THE BLACK
HILLS WILL CONTINUE TO REDUCE VISIBILITIES TO UNDER ONE-QUARTER
MILE AT TIMES EARLY THIS MORNING. VISIBILITIES WILL IMPROVE TOWARDS
MID-DAY AS WINDS START TO SWITCH NORTHERLY AND SNOW DEVELOPS.
A PAIR OF LOW PRESSURE SYSTEMS WILL COMBINE TO PRODUCE SNOW OVER
NORTHEAST WYOMING INTO WESTERN AND SOUTH CENTRAL SOUTH DAKOTA TODAY
INTO TONIGHT. A COLD FRONT WILL PUSH THROUGH THE AREA TODAY INTO
TONIGHT. GUSTY NORTHWEST WINDS WILL DEVELOP IN ITS WAKE...PRODUCING
AREAS OF BLOWING SNOW.
.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY
THE LOW PRESSURE SYSTEMS WILL COMBINE AND MOVE THROUGH THE PLAINS
TOWARDS THE MIDWEST THURSDAY INTO FRIDAY...WITH AREAS OF SNOW
CONTINUING. GUSTY NORTHWEST WINDS WILL CONTINUE PRODUCING AREAS OF
BLOWING AND DRIFTING SNOW THROUGH THE DAY ON FRIDAY. ALSO...THE
WINDS WILL COMBINE WITH COLD TEMPERATURES TO PRODUCE WIND CHILLS OF
15 BELOW TO 30 BELOW ZERO BY THURSDAY NIGHT. THE STORM WILL SLOWLY
EXIT THE AREA BY LATE FRIDAY INTO EARLY SATURDAY.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY.
$$

WINTER STORM WARNING
Issue Date: 428 AM MST WED DEC 23 2009
Expiration: 500 PM MST FRI DEC 25 2009

.AN UPPER LEVEL STORM SYSTEM OVER THE SOUTHWESTERN UNITED STATES
WILL MOVE ACROSS THE PLAINS TOWARDS THE MIDWEST TODAY THROUGH
FRIDAY. THIS STORM WILL BRING SNOW...BLOWING SNOW...AND FRIGID
WIND CHILL VALUES TO WESTERN AND SOUTH CENTRAL SOUTH DAKOTA...AND
OVER NORTHEAST WYOMING.
SDZ024-WYZ057-231930-
/O.EXT.KUNR.WS.W.0010.091223T1200Z-091226T0000Z/
NORTHERN BLACK HILLS-WYOMING BLACK HILLS-
INCLUDING THE CITIES OF...LEAD...DEADWOOD...SUNDANCE...
FOUR CORNERS
428 AM MST WED DEC 23 2009
...WINTER STORM WARNING NOW IN EFFECT UNTIL 5 PM MST FRIDAY...
THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL 5 PM MST FRIDAY.
* SNOW WILL DEVELOP TODAY...AND CONTINUE THROUGH FRIDAY.
* SNOW ACCUMULATIONS OF 6 TO 11 INCHES ARE EXPECTED ACROSS THE
AREA BY FRIDAY AFTERNOON.
* NORTHWEST WINDS WILL INCREASE TONIGHT AND CONTINUE THROUGH
FRIDAY...CAUSING AREAS OF BLOWING SNOW...REDUCING VISIBILITIES
TO LESS THAN ONE HALF MILE AT TIMES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A WINTER STORM WARNING MEANS HEAVY SNOW...STRONG WIND...FREEZING
PRECIPITATION...AND COLD TEMPERATURES WILL CREATE DANGEROUS
CONDITIONS.
$$

WINTER WEATHER ADVISORY
Issue Date: 1236 PM MST TUE DEC 22 2009
Expiration: 500 AM MST THU DEC 24 2009

...WHITE CHRISTMAS LIKELY FOR WESTERN SOUTH DAKOTA AND NORTHEAST
WYOMING...
.AN UPPER LEVEL STORM SYSTEM OVER THE WESTERN UNITED STATES WILL
MOVE INTO THE SOUTHWESTERN UNITED STATES TONIGHT...THEN ACROSS THE
PLAINS WEDNESDAY INTO THURSDAY. THIS STORM WILL BRING SNOW TO THE
BLACK HILLS REGION...WITH HEAVY SNOW POSSIBLE FOR CENTRAL SOUTH
DAKOTA AND THE BLACK HILLS. A COLD FRONT WILL DROP ACROSS THE
REGION LATE WEDNESDAY...WITH GUSTY WINDS CAUSING AREAS OF BLOWING
SNOW.
WYZ056-058-230345-
/O.UPG.KUNR.WS.A.0012.091223T1200Z-091225T0000Z/
/O.NEW.KUNR.WW.Y.0028.091223T1200Z-091224T1200Z/
WESTERN CROOK-WESTON-
INCLUDING THE CITIES OF...MOORCROFT...HULETT...NEWCASTLE
1236 PM MST TUE DEC 22 2009
...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM WEDNESDAY TO 5 AM
MST THURSDAY...
THE NATIONAL WEATHER SERVICE IN RAPID CITY HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT
FROM 5 AM WEDNESDAY TO 5 AM MST THURSDAY. THE WINTER STORM WATCH
IS NO LONGER IN EFFECT.
* SNOW IS EXPECTED TO DEVELOP EARLY WEDNESDAY MORNING AND
CONTINUE THROUGH THURSDAY AFTERNOON.
* SNOW ACCUMULATIONS OF 3 TO 5 INCHES ARE EXPECTED.
* GUSTY NORTHWEST WINDS WILL CAUSE AREAS OF BLOWING SNOW...
REDUCING VISIBILITIES TO LESS THAN HALF A MILE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS REDUCED
VISIBILITY WILL CREATE HAZARDOUS CONDITIONS. USE CAUTION WHEN
OUTDOORS OR TRAVELING.
$$

WINTER STORM WATCH
Issue Date: 423 AM MST TUE DEC 22 2009
Expiration: 500 PM MST THU DEC 24 2009

...WHITE CHRISTMAS LIKELY FOR WESTERN SOUTH DAKOTA AND NORTHEAST
WYOMING...
.AN UPPER LEVEL STORM SYSTEM OVER THE WESTERN UNITED STATES WILL
MOVE INTO THE FOUR CORNERS AREA TONIGHT...AND INTO THE PLAINS ON
WEDNESDAY INTO THURSDAY. THIS WILL BRING SNOW WITH AREAS OF
BLOWING SNOW TO SOUTH DAKOTA INTO NORTHEAST WYOMING.
WYZ056-058-071-221930-
/O.EXA.KUNR.WS.A.0012.091223T1200Z-091225T0000Z/
WESTERN CROOK-WESTON-NORTHEASTERN CROOK-
INCLUDING THE CITIES OF...MOORCROFT...HULETT...NEWCASTLE...COLONY
423 AM MST TUE DEC 22 2009
...WINTER STORM WATCH IN EFFECT FROM LATE TONIGHT THROUGH
THURSDAY AFTERNOON...
THE NATIONAL WEATHER SERVICE IN RAPID CITY HAS ISSUED A WINTER
STORM WATCH...WHICH IS IN EFFECT FROM LATE TONIGHT THROUGH
THURSDAY AFTERNOON.
* SNOW IS EXPECTED TO DEVELOP BY EARLY WEDNESDAY MORNING AND
CONTINUE THROUGH THURSDAY AFTERNOON.
* SNOW ACCUMULATIONS OF 5 TO 9 INCHES ARE EXPECTED ACROSS THE
AREA BY LATE THURSDAY AFTERNOON.
* AREAS OF BLOWING SNOW ARE EXPECTED TO DEVELOP WEDNESDAY EVENING
AND CONTINUE THROUGH THURSDAY...REDUCING VISIBILITIES AT TIMES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A WINTER STORM WATCH MEANS HEAVY SNOW...STRONG WIND...FREEZING
PRECIPITATION...AND COLD TEMPERATURES ARE POSSIBLE...BUT THE
TIMING OR TRACK OF THE STORM IS STILL UNCERTAIN. MONITOR NOAA
WEATHER RADIO...LOCAL RADIO OR TELEVISION...OR THE INTERNET FOR
UPDATES ON THIS POTENTIALLY DANGEROUS STORM. TAKE TIME TO PREPARE
FOR SEVERE WINTER CONDITIONS BEFORE THE STORM DEVELOPS.
$$