HAZARDOUS WEATHER OUTLOOK
Issue Date: 550 PM MST FRI DEC 11 2009
Expiration: 600 PM MST SAT DEC 12 2009

Expires:200912130100;;
FLUS45 KBYZ 120050
HWOBYZ
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BILLINGS MT
550 PM MST FRI DEC 11 2009
MTZ028>042-056>058-063>068-WYZ098-099-130100-
SOUTHERN WHEATLAND-MUSSELSHELL-TREASURE-NORTHERN ROSEBUD-CUSTER-
FALLON-NORTHERN STILLWATER-YELLOWSTONE-POWDER RIVER-CARTER-
SOUTHERN BIG HORN-EASTERN CARBON-NORTHERN PARK-
NORTHERN SWEET GRASS-GOLDEN VALLEY-RED LODGE FOOTHILLS-
NORTHERN BIG HORN-SOUTHERN ROSEBUD-JUDITH GAP-PARADISE VALLEY-
LIVINGSTON AREA-BEARTOOTH FOOTHILLS-ABSAROKA/BEARTOOTH MOUNTAINS-
CRAZY MOUNTAINS-NORTHEAST BIG HORN MOUNTAINS-SHERIDAN FOOTHILLS-
550 PM MST FRI DEC 11 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
MONTANA...SOUTH CENTRAL MONTANA...SOUTHEAST MONTANA AND NORTH
CENTRAL WYOMING.
.DAY ONE...TONIGHT
STRONG WEST WINDS OF 30 TO 45 MPH WITH GUSTS TO 65 MPH CONTINUE
OVER THE LIVINGSTON AND NYE AREAS INTO SATURDAY MORNING. PEOPLE
DRIVING ALONG INTERSTATE 90 IN THE LIVINGSTON AREA SHOULD BE READY
FOR STRONG CROSS WINDS AND LOCAL VISIBILITY RESTRICTIONS DUE TO
BLOWING AND DRIFTING SNOW.
.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY
SOME WARMING IS EXPECTED SATURDAY...BUT ANOTHER ARCTIC FRONT WILL
DROP INTO THE REGION EARLY SUNDAY. THIS ARCTIC FRONT WILL BRING
VERY COLD TEMPERATURES WITH READINGS FALLING BELOW ZERO BY SUNDAY
EVENING. ACCUMULATING SNOW WILL SPREAD ACROSS THE AREA WITH
HEAVIEST SNOWFALL OCCURRING LATE SUNDAY AFTERNOON INTO SUNDAY
NIGHT. THE GREATEST CONCERNS WILL BE RAPIDLY DETERIORATING ROAD
CONDITIONS BY LATE SUNDAY AFTERNOON AND EVENING. GUSTY NORTH
WINDS CAN ALSO BE EXPECTED WITH THIS SYSTEM AND WILL RESULT IN
AREAS OF BLOWING SNOW AND BITTERLY COLD WIND CHILLS THROUGH
MONDAY.
ANYONE PLANNING TO TRAVEL OR BE OUTDOORS TOWARD THE END OF THE
WEEKEND INTO EARLY NEXT WEEK SHOULD BE PREPARED FOR VERY COLD
WEATHER AND POTENTIALLY DIFFICULT TRAVEL CONDITIONS.
.SPOTTER INFORMATION STATEMENT...
WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
$$

WINTER STORM WATCH
Issue Date: 258 PM MST FRI DEC 11 2009
Expiration: 500 PM MST MON DEC 14 2009

.A RELATIVELY NICE SATURDAY WILL BE DRAMATICALLY REPLACED BY ARCTIC
AIR ON SUNDAY. MOISTURE FROM A STORM SYSTEM OVER CALIFORNIA WILL
OVERSPREAD THIS ARCTIC AIR BRINGING POTENTIAL FOR SNOW. THE
COMBINATION OF AIRMASSES IS FAVORABLE FOR ACCUMULATING SNOW
ESPECIALLY FOR AREAS WEST OF BILLINGS. TEMPERATURES IN THIS
AIRMASS WILL BE AS COLD AS THE PREVIOUS SYSTEM...AND NORTHERLY
WINDS WILL AGAIN GENERATE DANGEROUS WIND CHILLS.
MTZ028>042-056>058-063>066-WYZ099-121000-
/O.NEW.KBYZ.WS.A.0013.091213T1200Z-091215T0000Z/
SOUTHERN WHEATLAND-MUSSELSHELL-TREASURE-NORTHERN ROSEBUD-CUSTER-
FALLON-NORTHERN STILLWATER-YELLOWSTONE-POWDER RIVER-CARTER-
SOUTHERN BIG HORN-EASTERN CARBON-NORTHERN PARK-
NORTHERN SWEET GRASS-GOLDEN VALLEY-RED LODGE FOOTHILLS-
NORTHERN BIG HORN-SOUTHERN ROSEBUD-JUDITH GAP-PARADISE VALLEY-
LIVINGSTON AREA-BEARTOOTH FOOTHILLS-SHERIDAN FOOTHILLS-
INCLUDING THE CITIES OF...HARLOWTON...ROUNDUP...HYSHAM...
COLSTRIP...FORSYTH...MILES CITY...BAKER...COLUMBUS...ABSAROKEE...
BILLINGS...BROADUS...EKALAKA...PRYOR...LODGE GRASS...BRIDGER...
JOLIET...CLYDE PARK...WILSALL...BIG TIMBER...RYEGATE...LAVINA...
RED LODGE...HARDIN...CROW AGENCY...LAME DEER...JUDITH GAP...
EMIGRANT...LIVINGSTON...FISHTAIL...MCLEOD...SHERIDAN
258 PM MST FRI DEC 11 2009
...WINTER STORM WATCH IN EFFECT FROM LATE SATURDAY NIGHT THROUGH
MONDAY AFTERNOON...
THE NATIONAL WEATHER SERVICE IN BILLINGS HAS ISSUED A WINTER
STORM WATCH...WHICH IS IN EFFECT FROM LATE SATURDAY NIGHT THROUGH
MONDAY AFTERNOON.
* SNOW AND MUCH COLDER TEMPERATURES WILL RETURN ON SUNDAY
CONTINUING THROUGH MONDAY.
* SATURDAY WILL BE MILD AND DRY WHILE SUNDAY WILL SEE ROAD
CONDITIONS DETERIORATING AND TEMPERATURES FALLING.
* 2 TO 5 INCHES OF SNOW WITH LOCALLY HIGHER AMOUNTS CAN BE
EXPECTED BY MONDAY MORNING WEST OF BILLINGS. 1 TO 3 INCHES
EXPECTED EAST OF BILLINGS. ADDITIONAL SNOW WILL FALL MONDAY.
* MOUNTAIN SNOWFALL WILL BE STEADY AND COULD REACH 8 TO 12 INCHES
BY MONDAY.
* NORTH WINDS WILL CAUSE BLOWING AND DRIFTING...WITH WIND CHILLS
REACHING 20 TO 40 DEGREES BELOW ZERO ACROSS SOUTHEAST MONTANA.*
* TIMING...COLD FRONT WILL REACH A JUDITH GAP TO MILES CITY LINE
EARLY SUNDAY MORNING PUSHING THROUGH THE AREA BY LATE SUNDAY
MORNING.*
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A WINTER STORM WATCH IS ISSUED WHEN SEVERE WINTER WEATHER IS
POSSIBLE BUT NOT IMMINENT. AT THIS TIME THERE IS A POTENTIAL FOR
SIGNIFICANT SNOW AND OR ICE ACCUMULATIONS. FUTURE DRIVING AND
WALKING CONDITIONS MAY BECOME HAZARDOUS SO IT IS IMPORTANT TO
MONITOR THE LATEST FORECASTS.
$$