Winter Storm Warning 2, NWS Riverton, WY

280 
WWUS45 KRIW 180355
WSWRIW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
855 PM MST SAT JAN 17 2015

...MORE MODERATE TO HEAVY SNOW FOR NORTHWEST WYOMING...

.A PACIFIC TROUGH AND ASSOCIATED COLD FRONT WILL MOVE INTO
WESTERN WYOMING AND WILL BRING ANOTHER ROUND OF MODERATE TO
POSSIBLY HEAVY SNOW TONIGHT THROUGH EARLY MONDAY MORNING.

WYZ012-181200-
/O.CON.KRIW.WS.W.0002.150118T0600Z-150119T1200Z/
TETON AND GROS VENTRE MOUNTAINS-
855 PM MST SAT JAN 17 2015

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST MONDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST MONDAY. 

* SUMMARY AND TIMING...SNOW WILL BEGIN LATE THIS EVENING AND
  BECOME STEADIER AND HEAVIER LATER TONIGHT INTO SUNDAY. THE
  HEAVIEST SNOW IS EXPECTED SUNDAY MORNING.  

* SNOW ACCUMULATIONS...10 TO 15 INCHES WITH LOCALLY HIGHER
  AMOUNTS ABOVE 9500 FEET.

* WIND AND VISIBILITY...WEST TO SOUTHWEST INCREASING TO 15 TO 25 
  MPH WITH GUSTS TO 35 TO 40 MPH. VISIBILITY MAY BE REDUCED TO 
  UNDER ONE QUARTER MILE IN SNOW AND BLOWING SNOW. 

* IMPACTS...ROADS WILL BECOME SNOW COVERED AND SNOW PACKED IN MANY
  AREAS. TRAVEL OVER TETON AND TOGWOTEE PASSES WILL BECOME
  ESPECIALLY DIFFICULT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF
TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET
AT WYOROAD.INFO.

&&

$$

WYZ013-181200-
/O.CON.KRIW.WW.Y.0003.150118T0600Z-150119T1200Z/
JACKSON HOLE-
INCLUDING THE CITY OF...JACKSON
855 PM MST SAT JAN 17 2015

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
MONDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
MONDAY. 

* SUMMARY AND TIMING...SNOW WILL DEVELOP BY MIDNGIHT BECOME MORE
  WIDESPREAD OVERNIGHT...AND CONTINUE INTO EARLY MONDAY MORNING.
  THE HEAVIEST SNOW IS EXPECTED SUNDAY MORNING.  

* SNOW ACCUMULATIONS...3 TO 6 INCHES WITH LOCALLY HIGHER AMOUNTS
  FROM MOOSE TO MORAN JUNCTION.

* WIND AND VISIBILITY...SOUTH SOUTHWEST WINDS 15 TO 20 MPH WITH 
  GUSTS TO 30 MPH BETWEEN MOOSE AND MORAN JUNCTION. VISIBILITY 
  BELOW A QUARTER MILE AT TIMES. 

* IMPACTS...TRAVEL WILL BECOME DIFFICULT WITH SNOW PACKED ROADS
  AND POOR VISIBILITY...ESPECIALLY ACROSS OPEN AREAS NORTH OF
  JACKSON.  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND BLOWING
SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY
ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF
TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET
AT WYOROAD.INFO.

&&

$$

WYZ001-181200-
/O.CON.KRIW.WW.Y.0003.150118T0600Z-150119T1200Z/
YELLOWSTONE NATIONAL PARK-
INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL
855 PM MST SAT JAN 17 2015

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
MONDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
MONDAY. 

* SUMMARY AND TIMING...SNOW WILL BECOME MORE WIDESPREAD AND 
  INCREASE IN INTENSITY TOWARDS MIDNIGHT AND CONTINUE INTO 
  MONDAY MORNING. THE HEAVIEST SNOW IS EXPECTED SUNDAY MORNING.  

* SNOW ACCUMULATIONS...8 TO 12 INCHES IN THE SOUTHERN MOUNTAINS 
  WITH LOCALLY HIGHER AMOUNTS. 3 TO 6 INCHES IN THE NORTH. 

* WIND AND VISIBILITY...SOUTHWEST WINDS 15 TO 20 MPH WITH GUSTS 
  TO 30 MPH. VISIBILITY BELOW A QUARTER MILE AT TIMES. 

* IMPACTS...SNOWFALL AND POOR VISIBILITY WILL HAMPER TRAVEL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND BLOWING
SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY
ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF
TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET
AT WYOROAD.INFO.

&&

$$

617 
WWUS45 KRIW 180941
WSWRIW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
241 AM MST SUN JAN 18 2015

...MORE MODERATE TO HEAVY SNOW FOR NORTHWEST WYOMING...

.A PACIFIC TROUGH AND ASSOCIATED COLD FRONT WILL MOVE INTO
WESTERN WYOMING AND WILL BRING ANOTHER ROUND OF MODERATE TO
POSSIBLY HEAVY SNOW THROUGH EARLY MONDAY MORNING.

WYZ012-182300-
/O.CON.KRIW.WS.W.0002.000000T0000Z-150119T1200Z/
TETON AND GROS VENTRE MOUNTAINS-
241 AM MST SUN JAN 18 2015

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST MONDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST MONDAY. 

* SUMMARY AND TIMING...SNOW WILL CONTINUE THROUGH TODAY. THE HEAVIEST
  SNOW IS EXPECTED THIS MORNING.

* SNOW ACCUMULATIONS...10 TO 15 INCHES WITH LOCALLY HIGHER 
  AMOUNTS ABOVE 9500 FEET. 

* WIND AND VISIBILITY...WEST TO SOUTHWEST INCREASING TO 15 TO 25 
  MPH WITH GUSTS TO 35 TO 40 MPH. VISIBILITY MAY BE REDUCED TO 
  UNDER ONE QUARTER MILE IN SNOW AND BLOWING SNOW. 

* IMPACTS...ROADS WILL BECOME SNOW COVERED AND SNOW PACKED IN 
  MANY AREAS. TRAVEL OVER TETON AND TOGWOTEE PASSES WILL BECOME 
  ESPECIALLY DIFFICULT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF
TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET
AT WYOROAD.INFO.

&&

$$

WYZ013-182300-
/O.CON.KRIW.WW.Y.0003.000000T0000Z-150119T1200Z/
JACKSON HOLE-
INCLUDING THE CITY OF...JACKSON
241 AM MST SUN JAN 18 2015

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
MONDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
MONDAY. 

* SUMMARY AND TIMING...SNOW WILL CONTINUE TODAY BEFORE TAPERING
  OFF SUNDAY NIGHT. THE HEAVIEST SNOW IS EXPECTED THIS MORNING.

* SNOW ACCUMULATIONS...3 TO 6 INCHES WITH LOCALLY HIGHER AMOUNTS
  FROM MOOSE TO MORAN JUNCTION. SNOW MAY MIX WITH RAIN AT TIMES
  THIS AFTERNOON AROUND THE TOWN OF JACKSON.

* WIND AND VISIBILITY...SOUTH SOUTHWEST WINDS 15 TO 20 MPH WITH 
  GUSTS TO 30 MPH BETWEEN MOOSE AND MORAN JUNCTION. VISIBILITY 
  BELOW A QUARTER MILE AT TIMES. 

* IMPACTS...TRAVEL WILL BECOME DIFFICULT WITH SNOW PACKED ROADS 
  AND POOR VISIBILITY...ESPECIALLY ACROSS OPEN AREAS NORTH OF 
  JACKSON. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND BLOWING
SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY
ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF
TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET
AT WYOROAD.INFO.

&&

$$

WYZ001-182300-
/O.CON.KRIW.WW.Y.0003.000000T0000Z-150119T1200Z/
YELLOWSTONE NATIONAL PARK-
INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL
241 AM MST SUN JAN 18 2015

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
MONDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
MONDAY. 

* SUMMARY AND TIMING...SNOW WILL CONTINUE TODAY BEFORE TAPERING
  OFF SUNDAY NIGHT. THE HEAVIEST SNOW IS EXPECTED THIS MORNING.

* SNOW ACCUMULATIONS...8 TO 12 INCHES IN THE SOUTHERN MOUNTAINS 
  WITH LOCALLY HIGHER AMOUNTS. 3 TO 6 INCHES IN THE NORTH. 

* WIND AND VISIBILITY...SOUTHWEST WINDS 15 TO 20 MPH WITH GUSTS 
  TO 30 MPH. VISIBILITY BELOW A QUARTER MILE AT TIMES. 

* IMPACTS...SNOWFALL AND POOR VISIBILITY WILL HAMPER TRAVEL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND BLOWING
SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY
ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF
TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET
AT WYOROAD.INFO.

&&

$$

398 
WWUS45 KRIW 182005
WSWRIW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
105 PM MST SUN JAN 18 2015

...MODERATE TO HEAVY SNOW TO CONTINUE FOR NORTHWEST WYOMING...

.A PACIFIC TROUGH AND ASSOCIATED COLD FRONT WILL MOVE INTO
WESTERN WYOMING AND WILL BRING ANOTHER ROUND OF MODERATE TO
POSSIBLY HEAVY SNOW THROUGH EARLY MONDAY MORNING.  

WYZ012-191200-
/O.CON.KRIW.WS.W.0002.000000T0000Z-150119T1200Z/
TETON AND GROS VENTRE MOUNTAINS-
105 PM MST SUN JAN 18 2015

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST MONDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST MONDAY. 

* SUMMARY AND TIMING...SNOW WILL CONTINUE THROUGH TONIGHT. THE
  HEAVIEST SNOW IS EXPECTED BEFORE MIDNIGHT.

* SNOW ACCUMULATIONS...10 TO 15 INCHES WITH LOCALLY HIGHER 
  AMOUNTS ABOVE 9500 FEET. 

* WIND AND VISIBILITY...WEST TO SOUTHWEST INCREASING TO 15 TO 25 
  MPH WITH GUSTS TO 35 TO 40 MPH. VISIBILITY MAY BE REDUCED TO 
  UNDER ONE QUARTER MILE IN SNOW AND BLOWING SNOW. 

* IMPACTS...ROADS WILL BECOME SNOW COVERED AND SNOW PACKED IN 
  MANY AREAS. TRAVEL OVER TETON AND TOGWOTEE PASSES WILL BECOME 
  ESPECIALLY DIFFICULT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF
TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET
AT WYOROAD.INFO.

&&

$$

WYZ013-191200-
/O.CON.KRIW.WW.Y.0003.000000T0000Z-150119T1200Z/
JACKSON HOLE-
INCLUDING THE CITY OF...JACKSON
105 PM MST SUN JAN 18 2015

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
MONDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
MONDAY. 

* SUMMARY AND TIMING...SNOW WILL CONTINUE TODAY BEFORE TAPERING 
  OFF SUNDAY NIGHT. THE HEAVIEST SNOW IS EXPECTED THIS MORNING. 

* SNOW ACCUMULATIONS...3 TO 6 INCHES WITH LOCALLY HIGHER AMOUNTS
  FROM MOOSE TO MORAN JUNCTION. SNOW MAY MIX WITH RAIN AT TIMES. 

* WIND AND VISIBILITY...SOUTH SOUTHWEST WINDS 15 TO 20 MPH WITH 
  GUSTS TO 30 MPH BETWEEN MOOSE AND MORAN JUNCTION. VISIBILITY 
  BELOW A QUARTER MILE AT TIMES. 

* IMPACTS...TRAVEL WILL BECOME DIFFICULT WITH SNOW PACKED ROADS 
  AND POOR VISIBILITY...ESPECIALLY ACROSS OPEN AREAS NORTH OF 
  JACKSON. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND BLOWING
SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY
ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF
TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET
AT WYOROAD.INFO.

&&

$$

WYZ001-191200-
/O.CON.KRIW.WW.Y.0003.000000T0000Z-150119T1200Z/
YELLOWSTONE NATIONAL PARK-
INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL
105 PM MST SUN JAN 18 2015

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
MONDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
MONDAY. 

* SUMMARY AND TIMING...SNOW WILL CONTINUE TODAY BEFORE TAPERING
  OFF SUNDAY NIGHT. THE HEAVIEST SNOW IS EXPECTED BEFORE MIDNIGHT.

* SNOW ACCUMULATIONS...8 TO 12 INCHES IN THE SOUTHERN MOUNTAINS 
  WITH LOCALLY HIGHER AMOUNTS. 3 TO 6 INCHES IN THE NORTH. 

* WIND AND VISIBILITY...SOUTHWEST WINDS 15 TO 20 MPH WITH GUSTS 
  TO 30 MPH. VISIBILITY BELOW A QUARTER MILE AT TIMES. 

* IMPACTS...SNOWFALL AND POOR VISIBILITY WILL HAMPER TRAVEL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND BLOWING
SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY
ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF
TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET
AT WYOROAD.INFO.

&&

$$

C.BAKER

300 
WWUS45 KRIW 190322
WSWRIW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
822 PM MST SUN JAN 18 2015

...MODERATE TO HEAVY SNOW TO CONTINUE FOR NORTHWEST WYOMING...

.A PACIFIC TROUGH AND ASSOCIATED COLD FRONT WILL MOVE INTO
WESTERN WYOMING AND WILL BRING ANOTHER ROUND OF MODERATE TO
POSSIBLY HEAVY SNOW THROUGH EARLY MONDAY MORNING.

WYZ012-191200-
/O.CON.KRIW.WS.W.0002.000000T0000Z-150119T1200Z/
TETON AND GROS VENTRE MOUNTAINS-
822 PM MST SUN JAN 18 2015

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST MONDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST MONDAY. 

* SUMMARY AND TIMING...SNOW WILL CONTINUE THROUGH TONIGHT. THE 
  HEAVIEST SNOW IS EXPECTED BEFORE MIDNIGHT. 

* SNOW ACCUMULATIONS...STORM TOTAL OF 10 TO 15 INCHES. AT 8
  PM...7.5 TO 10 INCHES HAD ACCUMULATED AT OBSERVATION PLOTS
  BETWEEN 8000 AND 9500 FEET IN THE TETON RANGE.

* WIND AND VISIBILITY...WEST TO SOUTHWEST INCREASING TO 15 TO 25 
  MPH WITH GUSTS TO 35 TO 40 MPH. VISIBILITY MAY BE REDUCED TO 
  UNDER ONE QUARTER MILE IN SNOW AND BLOWING SNOW. 

* IMPACTS...ROADS WILL BECOME SNOW COVERED AND SNOW PACKED IN 
  MANY AREAS. TRAVEL OVER TETON AND TOGWOTEE PASSES WILL BECOME 
  ESPECIALLY DIFFICULT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF
TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET
AT WYOROAD.INFO.

&&

$$

WYZ013-191200-
/O.CON.KRIW.WW.Y.0003.000000T0000Z-150119T1200Z/
JACKSON HOLE-
INCLUDING THE CITY OF...JACKSON
822 PM MST SUN JAN 18 2015

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
MONDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
MONDAY. 

* SUMMARY AND TIMING...OCCASIONAL SNOW SHOWERS WILL CONTINUE TO
  MOVE ACROSS THE VALLEY THIS EVENING...AND BEGIN TO TAPER OFF
  AFTER MIDNIGHT.  

* SNOW ACCUMULATIONS...AN ADDITIONAL 1 TO 2 INCHES POSSIBLE
  TONIGHT. STORM TOTAL OF 2 TO 5 INCHES WITH THE HIGHER AMOUNTS
  FROM MOOSE TO MORAN JUNCTION. SNOW MAY MIX WITH RAIN AT TIMES
  THIS EVENING.

* WIND...SOUTH SOUTHWEST WINDS 10 TO 20 MPH.

* IMPACTS...TRAVEL WILL BECOME DIFFICULT WITH SNOW PACKED ROADS 
  AND POOR VISIBILITY...ESPECIALLY ACROSS OPEN AREAS NORTH OF 
  JACKSON. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND BLOWING
SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY
ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF
TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET
AT WYOROAD.INFO.

&&

$$

WYZ001-191200-
/O.CON.KRIW.WW.Y.0003.000000T0000Z-150119T1200Z/
YELLOWSTONE NATIONAL PARK-
INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL
822 PM MST SUN JAN 18 2015

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
MONDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
MONDAY. 

* SUMMARY AND TIMING...OCCASIONAL SNOW SHOWERS WILL CONTINUE TO
  MOVE ACROSS THE VALLEY THIS EVENING...AND BEGIN TO TAPER OFF
  AFTER MIDNIGHT.

* SNOW ACCUMULATIONS...AN ADDITIONAL 1 TO 3 INCHES TONIGHT. 2 TO
  6 INCHES OF SNOW HAD ACCUMULATED ACROSS YELLOWSTONE PARK SINCE
  LAST NIGHT WITH THE HIGHER AMOUNTS IN THE SOUTHERN PORTION OF
  THE PARK.

* WIND...SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 30 MPH.

* IMPACTS...SNOWFALL AND POOR VISIBILITY WILL HAMPER TRAVEL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND BLOWING
SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY
ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF
TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET
AT WYOROAD.INFO.

&&

$$

939 
WWUS45 KRIW 190557
WSWRIW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
1057 PM MST SUN JAN 18 2015


WYZ012-190700-
/O.CAN.KRIW.WS.W.0002.000000T0000Z-150119T1200Z/
TETON AND GROS VENTRE MOUNTAINS-
1057 PM MST SUN JAN 18 2015

...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS CANCELLED THE WINTER
STORM WARNING. 

A DRIER AIRMASS WILL PUSH ACROSS THE AREA BY MIDNIGHT EITHER
ENDING SNOWFALL OR SNOWFALL BECOMING VERY LIGHT WITH LITTLE
ADDITIONAL ACCUMULATION.  

$$

WYZ001-013-190700-
/O.CAN.KRIW.WW.Y.0003.000000T0000Z-150119T1200Z/
YELLOWSTONE NATIONAL PARK-JACKSON HOLE-
INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL...JACKSON
1057 PM MST SUN JAN 18 2015

...WINTER WEATHER ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS CANCELLED THE WINTER
WEATHER ADVISORY. 

A DRIER AIRMASS WILL PUSH ACROSS THE AREA BY MIDNIGHT EITHER
ENDING SNOWFALL OR SNOWFALL BECOMING VERY LIGHT WITH LITTLE
ADDITIONAL ACCUMULATION.  


$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RIVERTON WY
1040 AM MST SAT JAN 17 2015

.SHORT TERM...SATURDAY THROUGH MONDAY NIGHT

AROUND MIDNIGHT...THE LAST GASPS OF THE SHORTWAVE THAT BROUGHT THE
SNOW TO THE WEST WAS MOVING OUT. SNOW ACROSS THE WEST WAS TAPERING
OFF AND SHOULD BE MAINLY DONE BY DAYBREAK. TODAY LOOKS TO BE THE
QUIETEST DAY OF THE SHORT TERM PERIOD AS A BUBBLE AREA OF HIGH
PRESSURE BUILDS ACROSS THE STATE. THERE COULD STILL BE A FEW SNOW
SHOWERS ACROSS THE HIGHER ELEVATIONS OF THE WEST...BUT NO ADDITIONAL
ACCUMULATION IS EXPECTED. MEANWHILE...EAST OF THE DIVIDE EXPECT A
DRY DAY WITH SOME SUNSHINE. THERE WILL STILL BE SOME GUSTY WINDS
ACROSS THE FAVORED LOCATIONS BUT THEY SHOULD NOT BE AS STRONG AS
YESTERDAY.

HOWEVER...THIS WILL CHANGE TONIGHT. THE NEXT TROUGH AND FRONT WILL
APPROACH FROM THE WEST STARTING TONIGHT. THE MODELS HAVE COME INTO
BETTER AGREEMENT FROM LAST NIGHT WITH THE TIMING OF THE ARRIVAL OF
THE PRECIPITATION. AT THIS POINT...THE HEAVIEST SHOULD HOLD OFF
UNTIL LATER SATURDAY NIGHT AS THE BEST WARM ADVECTION MOVE INTO THE
AREA. SNOW WILL CONTINUE ON AND OFF THROUGH SUNDAY AND EVEN INTO
SUNDAY NIGHT BEFORE ENDING. THE MODELS ARE IN GOOD AGREEMENT IN
PUTTING THE HEAVIEST PRECIPITATION ACROSS THE TETONS. THE WESTERLY
FLOW AND FAVORABLE OROGRAPHICS ALSO AGREE WITH THIS. AS A
RESULT...WE WILL HOIST A WINTER STORM WATCH FOR ZONE 12 STARTING
LATER TONIGHT AND RUNNING THROUGH SUNDAY. OTHER PORTIONS OF THE
WESTERN MOUNTAINS WILL SEE SNOW AS WELL...BUT LESSER AMOUNTS. AT
THIS POINT...WE WILL LET THE DAY SHIFT DECIDE ON POSSIBLE ADVISORIES
FOR OTHER LOCATIONS. ONE CONCERN...HOWEVER...IS SOME OF THE MODELS
SHOWING SOME WARMER AIR CREEPING UP INTO THE WESTERN VALLEYS. THE
NAM SHOWS 700 MILLIBAR TEMPERATURES RISING TO AROUND MINUS 3 ON
SUNDAY. THIS WOULD RAISE SNOW LEVELS TO AROUND 7000 FEET AND LIMIT
ACCUMULATION IN THE VALLEYS. WE DO HAVE SOME MIXING IN THE STAR
VALLEY TO COVER FOR THIS.

MEANWHILE...EAST OF THE DIVIDE THE WIND MACHINE WILL ONCE AGAIN BE
CRANKING UP FOR THE FAVORED AREAS. FOR TONIGHT...THE MODELS SHOW 700
MILLIBAR WINDS INCREASING TO OVER 50 KNOTS ONCE AGAIN TONIGHT AND
EVEN APPROACHING 70 KNOTS BY EARLY SUNDAY MORNING ACROSS THE CODY
FOOTHILLS AND ESPECIALLY AROUND EVERYONE'S FAVORITE
CROSSROADS...CLARK. THESE WINDS WILL PERSIST THROUGH SUNDAY BEFORE
DECREASING SUNDAY NIGHT FOLLOWING PASSAGE OF THE FRONT AND
SHORTWAVE. SO...WE WILL HOIST A HIGH WIND WATCH FOR THE CODY
FOOTHILLS STARTING THIS EVENING AND RUNNING THROUGH SUNDAY. HIGH
WIND POTENTIAL ALSO EXISTS FOR THE SOUTHWESTERN WIND CORRIDOR FOR
SUNDAY WITH A TIGHTENING PRESSURE GRADIENT AND INCREASING LOW LEVEL
WINDS. AS FOR THE CHANCE OF ANY SNOW JUMPING EAST OF THE DIVIDE...AT
THIS TIME THE ODDS ARE NOT GREAT AND THE BEST CHANCE WOULD BE ACROSS
AREAS EAST OF THE BIG HORN RANGE. CONTINUITY HAD THIS REPRESENTED
WELL SO WE MADE FEW CHANGES.

BY MONDAY...ANOTHER SHORTWAVE MAY MOVE INTO THE WEST WITH ANOTHER
CHANCE FOR SNOW. THE MODELS ARE IN MORE DISAGREEMENT AT THIS
TIME SO WE MADE FEW CHANGES TO CONTINUITY FOR NOW.

.LONG TERM...TUESDAY THROUGH SATURDAY

THE MODELS HINT AT A COLDER DAY FOR TUESDAY WITH SOME LIGHT SNOW IN
THE MOUNTAINS ALONG AND EAST OF THE DIVIDE. THE ECMWF MODEL IS A
LITTLE COLDER WITH TEMPERATURES ON TUE THAN THE GFS MODEL. THERE
MAY BE SCATTERED AREAS OF LIGHT SNOW TUESDAY AFTERNOON AND NIGHT
EAST OF THE DIVIDE. CONFIDENCE IS LOWER NOW AS THIS SYSTEM DOES NOT
LOOK ALL THAT STRONG AND THE UPSLOPE COMPONENT IS MARGINAL. HAVE
LOWERED PRECIP CHANCE AT THE LOWER ELEVATIONS EAST OF THE DIVIDE.
THERE MAY BE ISOLATED AREAS OF LIGHT SNOW WEDNESDAY MORNING PER
THE ECMWF WHEREAS THE GFS IS DRY. HAVE LEFT LOW CHANCE FOR LIGHT
SNOW IN CENTRAL WY WED MORNING. WILL ADJUST IN THE COMING DAYS AS
NEEDED. WEDNESDAY NIGHT THROUGH THURSDAY NIGHT LOOK DRY. STILL
WATCHING A POTENTIAL WEATHER SYSTEM FOR LATE THURSDAY NIGHT IN NW
WY AND THEN OVER MOST OF THE AREA FRIDAY. GFS TRACK DIFFERS FROM
ECMWF TRACK...SO IMPACT TO THE REGION VARIES ACCORDINGLY. FOR NOW
WENT WITH LOW CHANCE OF PRECIP FRIDAY OVER THE AREA WITH PRECIP
ENDING FRI EVENING. NEXT SATURDAY A NW FLOW ALOFT IS FORECAST WITH
MOISTURE ON THE INCREASE IN NW WY. THE ECMWF IS FASTER WITH THE
SNOW FORMING IN THE NW MOUNTAINS AND BIGHORN MOUNTAINS. WILL PUT
IN A CHANCE OF SNOW MAINLY IN THE AFTERNOON INTO SATURDAY NIGHT.
TEMPERATURES WILL BE COLD TUE AND WED AND THEN A LITTLE MILDER
THURS THROUGH NEXT SATURDAY.

.AVIATION.../18Z ISSUANCE/

EAST OF THE DIVIDE...KCOD/KCPR/KLND/KRIW/KWRL ROUTES

VFR CONDITIONS WILL PREVAIL THROUGH THE PERIOD. AFTER A RELATIVE
LULL IN THE WINDS TODAY...WINDS ARE EXPECTED TO RAPIDLY INCREASE AT
RIDGE TOP LEVEL SATURDAY EVENING OR 40-55KTS ABOVE 8KFT WITH
MOUNTAIN WAVE ACTIVITY AND AREAS OF LLWS VCNTY KCOD-KLND.  HIGH
WINDS WILL LIKELY MIX DOWN INTO THE CODY FOOTHILLS SATURDAY NIGHT.
MTNS IN THE VCNTY OF THE DIVIDE WILL BECOME INCREASINGLY OBSCURED
ABOVE 9KFT IN SN 3Z-12Z SUNDAY.

WEST OF THE DIVIDE...KBPI/KJAC/KPNA/KRKS ROUTES

SOME MVFR CIGS WILL LINGER ACROSS THE FAR WEST AND ALSO OBSCURE
MOST MTNS ABOVE 8-9KFT.  A BREAK WITH SOME SCATTERING OUT OF THESE
LOWER CLOUD DECKS WILL OCCUR 18Z-22Z SATURDAY. THE NEXT PACIFIC
SYSTEM WILL BEGIN TO PUSH IN LOWER CIGS AND AREAS OF SN 00Z-06Z
SUNDAY WITH WIDESPREAD IFR CONDITIONS AND MTN OBSCURATIONS
EXPECTED VCNTY AND NORTH OF A KPNA-KAFO LINE BY 6Z SUN.

.FIRE WEATHER...

AFTER A DECREASE IN WIND TODAY IN MOST AREAS...WINDS WILL INCREASE
AGAIN TONIGHT AND CONTINUE THROUGH SUNDAY NIGHT. SNOW WILL REDEVELOP
OUT WEST SATURDAY NIGHT AND CONTINUE THROUGH SUNDAY WITH PLENTY OF
WIND.

&&

.RIW WATCHES/WARNINGS/ADVISORIES...
WINTER STORM WATCH FROM THIS EVENING THROUGH LATE SUNDAY NIGHT
WYZ012.

HIGH WIND WATCH FROM 8 PM MST THIS EVENING THROUGH LATE SUNDAY
NIGHT WYZ003.

&&

SHORT TERM...HATTINGS
LONG TERM...AR
AVIATION...C.BAKER
FIRE WEATHER...HATTINGS

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RIVERTON WY
400 AM MST SAT JAN 17 2015

WYZ001>020-022>030-181300-
ABSAROKA MOUNTAINS-BIGHORN MOUNTAINS SOUTHEAST-
BIGHORN MOUNTAINS WEST-CASPER MOUNTAIN-CODY FOOTHILLS-
EAST SWEETWATER COUNTY-FLAMING GORGE-
GREEN MOUNTAINS AND RATTLESNAKE RANGE-JACKSON HOLE-LANDER FOOTHILLS-
NATRONA COUNTY LOWER ELEVATIONS-NORTH BIG HORN BASIN-
NORTHEAST JOHNSON COUNTY-OWL CREEK AND BRIDGER MOUNTAINS-
ROCK SPRINGS AND GREEN RIVER-SALT RIVER AND WYOMING RANGES-
SOUTH LINCOLN COUNTY-SOUTHEAST BIG HORN BASIN-
SOUTHEAST JOHNSON COUNTY-SOUTHWEST BIG HORN BASIN-STAR VALLEY-
TETON AND GROS VENTRE MOUNTAINS-UPPER GREEN RIVER BASIN-
UPPER GREEN RIVER BASIN FOOTHILLS-UPPER WIND RIVER BASIN-
WIND RIVER BASIN-WIND RIVER MOUNTAINS EAST-WIND RIVER MOUNTAINS WEST-
YELLOWSTONE NATIONAL PARK-
400 AM MST SAT JAN 17 2015

...WINTER STORM WATCH FOR THE TETONS LATER TONIGHT THROUGH SUNDAY
NIGHT...

...HIGH WIND WATCH FOR THE CODY FOOTHILLS FROM THIS EVENING THROUGH
SUNDAY NIGHT...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING.

.DAY ONE...TODAY AND TONIGHT

SNOW WILL SPREAD INTO THE WEST TONIGHT. PLEASE SEE FORECASTS FOR
DETAILS.

HIGH WINDS ARE POSSIBLE IN THE CODY FOOTHILLS TONIGHT...ESPECIALLY
IN THE VICINITY OF CLARK.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

SUNDAY...SNOW WILL CONTINUE OVER THE WEST...WITH THE BEST CHANCE OF
SIGNIFICANT SNOWFALL OVER THE FAR NORTHWEST. THE THREAT FOR HIGH
WIND WILL CONTINUE IN THE CODY FOOTHILLS.

MONDAY...ANOTHER CHANCE OF SNOW FOR THE WESTERN MOUNTAINS.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE URGED TO REPORT SNOWFALL AMOUNTS AND WIND GUSTS.

TEAM RIVERTON