Winter Storm Warning 5, NWS Riverton, WY

779 
WWUS45 KRIW 180850
WSWRIW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
150 AM MST THU FEB 18 2016

...SIGNIFICANT SNOW AND WIND EXPECTED IN THE WESTERN WYOMING
MOUNTAINS INTO TONIGHT...

.AN APPROACHING STORM SYSTEM WITH A STRONG COLD FRONT WILL LIKELY
PRODUCE A SIGNIFICANT SNOWSTORM FOR THE WESTERN WYOMING
MOUNTAINS. SNOW AND WIND WILL SPREAD ACROSS THE AREA EARLY THIS
MORNING AND CONTINUE INTO TONIGHT BEFORE ENDING. THE COMBINATION
OF SNOW AND WIND COULD CAUSE SIGNIFICANT IMPACT FOR THOSE PLANNING
OUTDOOR ACTIVITIES OR TRAVEL OVER AREA PASSES INCLUDING
TETON...SALT RIVER...TOGWOTEE AND SOUTH PASS.

WYZ012-182300-
/O.CON.KRIW.WS.W.0005.160218T0900Z-160219T1200Z/
TETON AND GROS VENTRE MOUNTAINS-
150 AM MST THU FEB 18 2016

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

* TIMING...SNOW WILL DEVELOP EARLY THIS MORNING AND MAY BE HEAVY
  AT TIMES THROUGH TONIGHT.

* SNOW ACCUMULATION...7 TO 12 INCHES WITH LOCAL AMOUNTS OF 14
  INCHES.

* WIND AND VISIBILITY...SOUTH TO SOUTHWEST WIND OF 25 TO 35 MPH
  WITH GUSTS OF 45 TO 50 MPH MPH OVER THE EXPOSED RIDGES AND
  HIGHEST ELEVATIONS...BECOMING WEST THIS EVENING. THE
  COMBINATION OF SNOW AND WIND WILL REDUCE THE VISIBILITY TO NEAR
  ZERO AT TIMES.

* MAIN IMPACTS...TRAVEL WILL LIKELY BECOME DIFFICULT OVER 
  MOUNTAIN PASSES...INCLUDING TETON AND TOGWOTEE PASSES....AS 
  ROADS BECOME SNOW PACKED AND SLICK WITH POOR VISIBILITY. 
  BEFORE TRAVELING MOTORISTS SHOULD CHECK THE LATEST ROAD 
  CONDITIONS BY VISITING WYOROAD.INFO OR BY DIALING 5 1 1. 
  BACKCOUNTRY TRAVELERS SHOULD ALSO BE ALERT FOR THIS 
  SIGNIFICANT STORM WITH PLENTY OF WIND AND SNOW. 

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.

&&

$$

WYZ001-182300-
/O.CON.KRIW.WW.Y.0010.160218T0900Z-160219T1200Z/
YELLOWSTONE NATIONAL PARK-
INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL
150 AM MST THU FEB 18 2016

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

* TIMING...SNOW WILL DEVELOP EARLY THIS MORNING AND MAY BE HEAVY
  AT TIMES THROUGH TONIGHT. ISOLATED EMBEDDED THUNDERSNOW IS
  POSSIBLE THIS AFTERNOON.

* SNOW ACCUMULATION...3 TO 5 INCHES INCLUDING MAMMOTH...EXCEPT 6 
  TO 12 INCHES IN THE SOUTHWEST PORTION OF THE PARK. 

* WIND AND VISIBILITY...SOUTH TO SOUTHWEST WIND OF 30 TO 40 MPH
  WITH GUSTS OF 45 MPH OVER THE EXPOSED RIDGES AND HIGHEST
  ELEVATIONS...BECOMING WEST THIS EVENING. THE COMBINATION OF
  SNOW AND WIND WILL REDUCE THE VISIBILITY TO BELOW ONE QUARTER OF
  A MILE AND OCCASIONALLY TO NEAR ZERO.

* MAIN IMPACT...TRAVEL WILL LIKELY BECOME DIFFICULT AS ROADS 
  BECOME SNOW PACKED AND SLICK WITH POOR VISIBILITY. BEFORE 
  TRAVELING MOTORISTS SHOULD CHECK THE LATEST ROAD CONDITIONS BY 
  VISITING WYOROAD.INFO OR BY DIALING 5 1 1. BACKCOUNTRY 
  TRAVELERS SHOULD ALSO BE BE ALERT FOR THIS SIGNIFICANT STORM 
  WITH PLENTY OF WIND AND SNOW. 

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.

&&

$$

WYZ024-182300-
/O.CON.KRIW.WW.Y.0010.160218T0900Z-160219T1200Z/
SALT RIVER AND WYOMING RANGES-
150 AM MST THU FEB 18 2016

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

* TIMING...SNOW WILL DEVELOP EARLY THIS MORNING AND MAY BECOME
  HEAVY AT TIMES THROUGH TONIGHT. THE STEADIEST SNOWFALL WILL
  LIKELY OCCUR FROM THIS MORNING INTO EARLY AFTERNOON. ISOLATED
  EMBEDDED THUNDERSNOW IS POSSIBLE THIS AFTERNOON.

* SNOW ACCUMULATION...6 TO 9 INCHES.

* WIND AND VISIBILITY...SOUTH TO SOUTHWEST WIND OF 30 TO 40 MPH
  WITH GUSTS OF 45 MPH OVER THE EXPOSED RIDGES AND HIGHEST
  ELEVATIONS...BECOMING WEST THIS EVENING. THE COMBINATION OF
  SNOW AND WIND WILL REDUCE THE VISIBILITY TO BELOW ONE QUARTER OF
  A MILE AND OCCASIONALLY TO NEAR ZERO.

* MAIN IMPACT...TRAVEL WILL LIKELY BECOME DIFFICULT AS ROADS 
  BECOME SNOW PACKED AND SLICK WITH POOR VISIBILITY...INCLUDING 
  SALT RIVER PASS. BEFORE TRAVELING MOTORISTS SHOULD CHECK THE 
  LATEST ROAD CONDITIONS BY VISITING WYOROAD.INFO OR BY DIALING 
  5 1 1. BACKCOUNTRY TRAVELERS SHOULD ALSO BE ALERT FOR THIS 
  SIGNIFICANT STORM WITH PLENTY OF WIND AND SNOW. 

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.

&&

$$

WYZ014-182300-
/O.CON.KRIW.WW.Y.0010.160218T0900Z-160219T1200Z/
WIND RIVER MOUNTAINS WEST-
150 AM MST THU FEB 18 2016

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

* TIMING...SNOW WILL DEVELOP EARLY THIS MORNING AND WILL BE HEAVY
  AT TIMES THROUGH TONIGHT. THE STEADIEST SNOWFALL WILL LIKELY
  OCCUR FROM THIS MORNING INTO EARLY AFTERNOON. SOME RAIN COULD
  MIX IN WITH THE SNOW AROUND MID DAY ON SOUTH PASS. ISOLATED
  THUNDERSNOW IS POSSIBLE THIS AFTERNOON.

* SNOW ACCUMULATION...6 TO 12 INCHES EXCEPT 3 TO 6 INCHES ON
  SOUTH PASS.

* WIND AND VISIBILITY...SOUTHWEST 30 TO 40 MPH WITH GUSTS TO 60
  MPH...BECOMING WEST THIS EVENING EVENING. THE VISIBILITY WILL
  DROP TO NEAR ZERO FOR EXTENDED PERIODS OF TIME ON SOUTH PASS.

* MAIN IMPACT...THE COMBINATION OF THESE HIGH WINDS AND SNOWFALL
  WILL RESULT IN EXTREMELY HAZARDOUS DRIVING CONDITIONS ON SOUTH
  PASS. EXPECT EXTENDED PERIODS OF WHITE OUT CONDITIONS ALONG WITH
  SIGNIFICANT DRIFTING OF SNOW. MOTORISTS SHOULD CHECK THE LATEST
  ROAD CONDITIONS BY VISITINGWYOROAD.INFO OR BY DIALING 5 1 1.
  BACKCOUNTRY TRAVELERS SHOULD ALSO BE ALERT FOR THIS SIGNIFICANT
  STORM WITH PLENTY OF WIND AND SNOW.

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.

&&

$$

685 
WWUS45 KRIW 180850 CCA
WSWRIW

URGENT - WINTER WEATHER MESSAGE...CORRECTED
NATIONAL WEATHER SERVICE RIVERTON WY
150 AM MST THU FEB 18 2016

...SIGNIFICANT SNOW AND WIND EXPECTED IN THE WESTERN WYOMING
MOUNTAINS TODAY AND TONIGHT...

.AN APPROACHING STORM SYSTEM WITH A STRONG COLD FRONT WILL LIKELY
PRODUCE A SIGNIFICANT SNOWSTORM FOR THE WESTERN WYOMING
MOUNTAINS. SNOW AND WIND WILL SPREAD ACROSS THE AREA EARLY THIS
MORNING AND CONTINUE INTO TONIGHT BEFORE ENDING. THE COMBINATION
OF SNOW AND WIND COULD CAUSE SIGNIFICANT IMPACT FOR THOSE PLANNING
OUTDOOR ACTIVITIES OR TRAVEL OVER AREA PASSES INCLUDING
TETON...SALT RIVER...TOGWOTEE AND SOUTH PASS.

WYZ012-182300-
/O.CON.KRIW.WS.W.0005.160218T0900Z-160219T1200Z/
TETON AND GROS VENTRE MOUNTAINS-
150 AM MST THU FEB 18 2016

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

* TIMING...SNOW WILL DEVELOP EARLY THIS MORNING AND MAY BE HEAVY
  AT TIMES THROUGH TONIGHT.

* SNOW ACCUMULATION...7 TO 12 INCHES WITH LOCAL AMOUNTS OF 14
  INCHES.

* WIND AND VISIBILITY...SOUTH TO SOUTHWEST WIND OF 25 TO 35 MPH
  WITH GUSTS OF 45 TO 50 MPH MPH OVER THE EXPOSED RIDGES AND
  HIGHEST ELEVATIONS...BECOMING WEST THIS EVENING. THE
  COMBINATION OF SNOW AND WIND WILL REDUCE THE VISIBILITY TO NEAR
  ZERO AT TIMES.

* MAIN IMPACTS...TRAVEL WILL LIKELY BECOME DIFFICULT OVER 
  MOUNTAIN PASSES...INCLUDING TETON AND TOGWOTEE PASSES....AS 
  ROADS BECOME SNOW PACKED AND SLICK WITH POOR VISIBILITY. 
  BEFORE TRAVELING MOTORISTS SHOULD CHECK THE LATEST ROAD 
  CONDITIONS BY VISITING WYOROAD.INFO OR BY DIALING 5 1 1. 
  BACKCOUNTRY TRAVELERS SHOULD ALSO BE ALERT FOR THIS 
  SIGNIFICANT STORM WITH PLENTY OF WIND AND SNOW. 

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.

&&

$$

WYZ001-182300-
/O.COR.KRIW.WW.Y.0010.160218T0900Z-160219T1200Z/
YELLOWSTONE NATIONAL PARK-
INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL
150 AM MST THU FEB 18 2016

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

* TIMING...SNOW WILL DEVELOP EARLY THIS MORNING AND MAY BE HEAVY
  AT TIMES THROUGH TONIGHT. ISOLATED EMBEDDED THUNDERSNOW IS
  POSSIBLE THIS AFTERNOON.

* SNOW ACCUMULATION...3 TO 5 INCHES INCLUDING MAMMOTH...EXCEPT 6 
  TO 12 INCHES IN THE SOUTHWEST PORTION OF THE PARK. 

* WIND AND VISIBILITY...SOUTH TO SOUTHWEST WIND OF 30 TO 40 MPH
  WITH GUSTS OF 45 MPH OVER THE EXPOSED RIDGES AND HIGHEST
  ELEVATIONS...BECOMING WEST THIS EVENING. THE COMBINATION OF
  SNOW AND WIND WILL REDUCE THE VISIBILITY TO BELOW ONE QUARTER OF
  A MILE AND OCCASIONALLY TO NEAR ZERO.

* MAIN IMPACT...TRAVEL WILL LIKELY BECOME DIFFICULT AS ROADS 
  BECOME SNOW PACKED AND SLICK WITH POOR VISIBILITY. BEFORE 
  TRAVELING MOTORISTS SHOULD CHECK THE LATEST ROAD CONDITIONS BY 
  VISITING WYOROAD.INFO OR BY DIALING 5 1 1. BACKCOUNTRY 
  TRAVELERS SHOULD ALSO BE BE ALERT FOR THIS SIGNIFICANT STORM 
  WITH PLENTY OF WIND AND SNOW. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW
AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

&&

$$

WYZ024-182300-
/O.COR.KRIW.WW.Y.0010.160218T0900Z-160219T1200Z/
SALT RIVER AND WYOMING RANGES-
150 AM MST THU FEB 18 2016

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

* TIMING...SNOW WILL DEVELOP EARLY THIS MORNING AND MAY BECOME
  HEAVY AT TIMES THROUGH TONIGHT. THE STEADIEST SNOWFALL WILL
  LIKELY OCCUR FROM THIS MORNING INTO EARLY AFTERNOON. ISOLATED
  EMBEDDED THUNDERSNOW IS POSSIBLE THIS AFTERNOON.

* SNOW ACCUMULATION...6 TO 9 INCHES.

* WIND AND VISIBILITY...SOUTH TO SOUTHWEST WIND OF 30 TO 40 MPH
  WITH GUSTS OF 45 MPH OVER THE EXPOSED RIDGES AND HIGHEST
  ELEVATIONS...BECOMING WEST THIS EVENING. THE COMBINATION OF
  SNOW AND WIND WILL REDUCE THE VISIBILITY TO BELOW ONE QUARTER OF
  A MILE AND OCCASIONALLY TO NEAR ZERO.

* MAIN IMPACT...TRAVEL WILL LIKELY BECOME DIFFICULT AS ROADS 
  BECOME SNOW PACKED AND SLICK WITH POOR VISIBILITY...INCLUDING 
  SALT RIVER PASS. BEFORE TRAVELING MOTORISTS SHOULD CHECK THE 
  LATEST ROAD CONDITIONS BY VISITING WYOROAD.INFO OR BY DIALING 
  5 1 1. BACKCOUNTRY TRAVELERS SHOULD ALSO BE ALERT FOR THIS 
  SIGNIFICANT STORM WITH PLENTY OF WIND AND SNOW. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW
AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

&&

$$

WYZ014-182300-
/O.COR.KRIW.WW.Y.0010.160218T0900Z-160219T1200Z/
WIND RIVER MOUNTAINS WEST-
150 AM MST THU FEB 18 2016

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

* TIMING...SNOW WILL DEVELOP EARLY THIS MORNING AND WILL BE HEAVY
  AT TIMES THROUGH TONIGHT. THE STEADIEST SNOWFALL WILL LIKELY
  OCCUR FROM THIS MORNING INTO EARLY AFTERNOON. SOME RAIN COULD
  MIX IN WITH THE SNOW AROUND MID DAY ON SOUTH PASS. ISOLATED
  THUNDERSNOW IS POSSIBLE THIS AFTERNOON.

* SNOW ACCUMULATION...6 TO 12 INCHES EXCEPT 3 TO 6 INCHES ON
  SOUTH PASS.

* WIND AND VISIBILITY...SOUTHWEST 30 TO 40 MPH WITH GUSTS TO 60
  MPH...BECOMING WEST THIS EVENING EVENING. THE VISIBILITY WILL
  DROP TO NEAR ZERO FOR EXTENDED PERIODS OF TIME ON SOUTH PASS.

* MAIN IMPACT...THE COMBINATION OF THESE HIGH WINDS AND SNOWFALL
  WILL RESULT IN EXTREMELY HAZARDOUS DRIVING CONDITIONS ON SOUTH
  PASS. EXPECT EXTENDED PERIODS OF WHITE OUT CONDITIONS ALONG WITH
  SIGNIFICANT DRIFTING OF SNOW. MOTORISTS SHOULD CHECK THE LATEST
  ROAD CONDITIONS BY VISITING WYOROAD.INFO OR BY DIALING 5 1 1.
  BACKCOUNTRY TRAVELERS SHOULD ALSO BE ALERT FOR THIS SIGNIFICANT
  STORM WITH PLENTY OF WIND AND SNOW.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW
AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

&&

$$

901 
WWUS45 KRIW 182150
WSWRIW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
250 PM MST THU FEB 18 2016

...SIGNIFICANT SNOW AND WIND EXPECTED IN THE WESTERN WYOMING
MOUNTAINS TODAY AND TONIGHT...

.AN APPROACHING STORM SYSTEM WITH A STRONG COLD FRONT WILL LIKELY
PRODUCE A SIGNIFICANT SNOWSTORM FOR THE WESTERN WYOMING
MOUNTAINS. SNOW AND WIND WILL SPREAD ACROSS THE AREA EARLY THIS
MORNING AND CONTINUE INTO TONIGHT BEFORE ENDING. THE COMBINATION
OF SNOW AND WIND COULD CAUSE SIGNIFICANT IMPACT FOR THOSE
PLANNING OUTDOOR ACTIVITIES OR TRAVEL OVER AREA PASSES INCLUDING
TETON...SALT RIVER...TOGWOTEE AND SOUTH PASS.

WYZ012-190315-
/O.CON.KRIW.WS.W.0005.000000T0000Z-160219T1200Z/
TETON AND GROS VENTRE MOUNTAINS-
250 PM MST THU FEB 18 2016

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

* TIMING...SNOW WILL CONTINUE THROUGH TONIGHT. SNOW WILL BE HEAVY
  AT TIMES THROUGH EARLY THIS EVENING.

* SNOW ACCUMULATION...6 INCHES HAVE FALLEN OVER THE HIGHER
  ELEVATIONS OF THE TETONS. TOTAL SNOWFALL 7 TO 12 INCHES WITH
  LOCAL AMOUNTS OF 14 INCHES.

* WIND AND VISIBILITY...SOUTH TO SOUTHWEST WIND OF 25 TO 35 MPH 
  WITH GUSTS OF 45 TO 50 MPH MPH OVER THE EXPOSED RIDGES AND 
  HIGHEST ELEVATIONS...BECOMING WEST THIS EVENING. THE 
  COMBINATION OF SNOW AND WIND WILL REDUCE THE VISIBILITY TO 
  NEAR ZERO AT TIMES. 

* MAIN IMPACTS...TRAVEL WILL LIKELY BECOME DIFFICULT OVER 
  MOUNTAIN PASSES...INCLUDING TETON AND TOGWOTEE PASSES....AS 
  ROADS BECOME SNOW PACKED AND SLICK WITH POOR VISIBILITY. 
  BEFORE TRAVELING MOTORISTS SHOULD CHECK THE LATEST ROAD 
  CONDITIONS BY VISITING WYOROAD.INFO OR BY DIALING 5 1 1. 
  BACKCOUNTRY TRAVELERS SHOULD ALSO BE ALERT FOR THIS 
  SIGNIFICANT STORM WITH PLENTY OF WIND AND SNOW. 

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.

&&

$$

WYZ023-190300-
/O.EXB.KRIW.WW.Y.0010.160218T2200Z-160219T0300Z/
STAR VALLEY-
INCLUDING THE CITIES OF...AFTON...ALPINE...STAR VALLEY RANCH...
THAYNE
250 PM MST THU FEB 18 2016

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 8 PM MST THIS
EVENING...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A WINTER
WEATHER ADVISORY FOR THE STAR VALLEY WHICH IS IN EFFECT UNTIL 8
PM MST THIS EVENING.

* TIMING...SNOW WILL CONTINUE FOR THE REMAINDER OF THIS AFTERNOON
  AND EARLY EVENING...HEAVY AT TIMES. SNOW WILL DECREASE IN
  INTENSITY LATER THIS EVENING.

* SNOW ACCUMULATION...1 TO 3 INCHES HAVE FALLEN SO FAR. 3 INCHES
  HAVE FALLEN IN THAYNE. SNOW TOTALS 3 TO 5 INCHES.

* WIND AND VISIBILITY...WEST SOUTHWEST WINDS 15 TO 25 MPH WILL
  PRODUCE SOME DRIFTING SNOW. VISIBILITY WILL BE DOWN TO ONE
  QUARTER OF A MILE AT TIMES.

* MAIN IMPACT...EXPECT HIGHWAYS TO REMAIN SLICK AND SNOWPACKED.
  SLUSH FROM EARLIER RAIN AND WET SNOW WILL LIKELY FREEZE OVER
  POTENTIALLY CAUSING BLACK ICE CONDITIONS. VISIBILITY ON SALT
  RIVER PASS WILL LIKELY BE REDUCED TO LESS THAN ONE QUARTER OF A
  MILE OR LESS AT TIMES IN SNOW AND BLOWING SNOW.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW
AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

&&

$$

WYZ001-190315-
/O.CON.KRIW.WW.Y.0010.000000T0000Z-160219T1200Z/
YELLOWSTONE NATIONAL PARK-
INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL
250 PM MST THU FEB 18 2016

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

* TIMING...SNOW WILL CONTINUE THROUGH TONIGHT. SNOW WILL BE HEAVY
  AT TIMES THROUGH EARLY THIS EVENING.

* SNOW ACCUMULATION...3 TO 5 INCHES INCLUDING MAMMOTH...EXCEPT 6 
  TO 12 INCHES IN THE SOUTHWEST PORTION OF THE PARK. 

* WIND AND VISIBILITY...SOUTH TO SOUTHWEST WIND OF 30 TO 40 MPH 
  WITH GUSTS OF 45 MPH OVER THE EXPOSED RIDGES AND HIGHEST 
  ELEVATIONS...BECOMING WEST THIS EVENING. THE COMBINATION OF 
  SNOW AND WIND WILL REDUCE THE VISIBILITY TO BELOW ONE QUARTER 
  OF A MILE AND OCCASIONALLY TO NEAR ZERO. 

* MAIN IMPACT...TRAVEL WILL LIKELY BECOME DIFFICULT AS ROADS 
  BECOME SNOW PACKED AND SLICK WITH POOR VISIBILITY. BEFORE 
  TRAVELING MOTORISTS SHOULD CHECK THE LATEST ROAD CONDITIONS BY 
  VISITING WYOROAD.INFO OR BY DIALING 5 1 1. BACKCOUNTRY 
  TRAVELERS SHOULD ALSO BE BE ALERT FOR THIS SIGNIFICANT STORM 
  WITH PLENTY OF WIND AND SNOW. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW
AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

&&

$$

WYZ024-190315-
/O.CON.KRIW.WW.Y.0010.000000T0000Z-160219T1200Z/
SALT RIVER AND WYOMING RANGES-
250 PM MST THU FEB 18 2016

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

* TIMING...SNOW WILL CONTINUE THROUGH TONIGHT. SNOW WILL BE HEAVY
  AT TIMES THROUGH EARLY THIS EVENING.

* SNOW ACCUMULATION...6 TO 9 INCHES.

* WIND AND VISIBILITY...SOUTH TO SOUTHWEST WIND OF 30 TO 40 MPH 
  WITH GUSTS OF 45 MPH OVER THE EXPOSED RIDGES AND HIGHEST 
  ELEVATIONS...BECOMING WEST THIS EVENING. THE COMBINATION OF 
  SNOW AND WIND WILL REDUCE THE VISIBILITY TO BELOW ONE QUARTER 
  OF A MILE AND OCCASIONALLY TO NEAR ZERO. 

* MAIN IMPACT...TRAVEL WILL LIKELY BECOME DIFFICULT AS ROADS 
  BECOME SNOW PACKED AND SLICK WITH POOR VISIBILITY...INCLUDING 
  SALT RIVER PASS. BEFORE TRAVELING MOTORISTS SHOULD CHECK THE 
  LATEST ROAD CONDITIONS BY VISITING WYOROAD.INFO OR BY DIALING 
  5 1 1. BACKCOUNTRY TRAVELERS SHOULD ALSO BE ALERT FOR THIS 
  SIGNIFICANT STORM WITH PLENTY OF WIND AND SNOW. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW
AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

&&

$$

WYZ014-190315-
/O.CON.KRIW.WW.Y.0010.000000T0000Z-160219T1200Z/
WIND RIVER MOUNTAINS WEST-
250 PM MST THU FEB 18 2016

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

* TIMING...SNOW WILL CONTINUE THROUGH TONIGHT. SNOW WILL BE HEAVY
  AT TIMES THROUGH EARLY THIS EVENING.

* SNOW ACCUMULATION...6 TO 12 INCHES EXCEPT 3 TO 6 INCHES ON 
  SOUTH PASS. 

* WIND AND VISIBILITY...SOUTHWEST 30 TO 40 MPH WITH GUSTS TO 60 
  MPH...BECOMING WEST THIS EVENING EVENING. THE VISIBILITY WILL 
  DROP TO NEAR ZERO FOR EXTENDED PERIODS OF TIME ON SOUTH PASS. 

* MAIN IMPACT...THE COMBINATION OF THESE HIGH WINDS AND SNOWFALL 
  WILL RESULT IN EXTREMELY HAZARDOUS DRIVING CONDITIONS ON SOUTH 
  PASS. EXPECT EXTENDED PERIODS OF WHITE OUT CONDITIONS ALONG 
  WITH SIGNIFICANT DRIFTING OF SNOW. MOTORISTS SHOULD CHECK THE 
  LATEST ROAD CONDITIONS BY VISITING WYOROAD.INFO OR BY DIALING 
  5 1 1. BACKCOUNTRY TRAVELERS SHOULD ALSO BE ALERT FOR THIS 
  SIGNIFICANT STORM WITH PLENTY OF WIND AND SNOW. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW
AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

&&

$$

571 
WWUS45 KRIW 190259
WSWRIW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
759 PM MST THU FEB 18 2016

...SNOW AND WIND EXPECTED IN THE WESTERN WYOMING MOUNTAINS
OVERNIGHT...

WYZ023-190400-
/O.EXP.KRIW.WW.Y.0010.000000T0000Z-160219T0300Z/
STAR VALLEY-
INCLUDING THE CITIES OF...AFTON...ALPINE...STAR VALLEY RANCH...
THAYNE
759 PM MST THU FEB 18 2016

...WINTER WEATHER ADVISORY WILL EXPIRE AT 8 PM MST THIS EVENING...

SNOW SHOWERS WILL LINGER UNTIL ABOUT MIDNIGHT WITH LITTLE
ADDITIONAL ACCUMULATION. 

$$

WYZ012-191200-
/O.CON.KRIW.WS.W.0005.000000T0000Z-160219T1200Z/
TETON AND GROS VENTRE MOUNTAINS-
759 PM MST THU FEB 18 2016

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

* TIMING...SNOW WILL OCCUR THROUGH THE NIGHT. 

* SNOW ACCUMULATION SO FAR...5 TO 8 INCHES OF SNOW HAS OCCURRED
  THROUGH MID EVENING. 

* TOTAL SNOWFALL...7 TO 12 INCHES WITH LOCAL AMOUNTS OF 14
  INCHES.

* WIND AND VISIBILITY...WEST WIND OF 25 TO 35 MPH WITH GUSTS OF 45
  TO 50 MPH MPH OVER THE EXPOSED RIDGES AND HIGHEST ELEVATIONS. THE
  COMBINATION OF SNOW AND WIND WILL REDUCE THE VISIBILITY TO NEAR
  ZERO AT TIMES.

* MAIN IMPACTS...TRAVEL WILL LIKELY BECOME DIFFICULT OVER MOUNTAIN
  PASSES...INCLUDING TETON AND TOGWOTEE PASSES. EXPECT SNOW PACKED
  AND SLICK ROADS WITH POOR VISIBILITY. BEFORE TRAVELING MOTORISTS
  SHOULD CHECK THE LATEST ROAD CONDITIONS BY VISITING WYOROAD.INFO
  OR BY DIALING 5 1 1. 

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.

&&

$$

WYZ001-191200-
/O.CON.KRIW.WW.Y.0010.000000T0000Z-160219T1200Z/
YELLOWSTONE NATIONAL PARK-
INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL
759 PM MST THU FEB 18 2016

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

* TIMING...SNOW WILL CONTINUE THROUGH THE NIGHT. 

* SNOW ACCUMULATION...3 TO 5 INCHES INCLUDING MAMMOTH...EXCEPT 6 
  TO 12 INCHES IN THE SOUTHWEST PORTION OF THE PARK. 

* WIND AND VISIBILITY...WEST TO SOUTHWEST WIND OF 25 TO 35 MPH
  WITH GUSTS OF 45 MPH OVER THE EXPOSED RIDGES AND HIGHEST
  ELEVATIONS. 

* MAIN IMPACT...TRAVEL MAY BE HAZARDOUS AT TIMES FROM THE
  NORTHEAST ENTRANCE TO MAMMOTH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW
AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

&&

$$

WYZ024-191200-
/O.CON.KRIW.WW.Y.0010.000000T0000Z-160219T1200Z/
SALT RIVER AND WYOMING RANGES-
759 PM MST THU FEB 18 2016

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

* TIMING...SNOW WILL CONTINUE THROUGH THE NIGHT.

* SNOW ACCUMULATION SO FAR...3 TO 6 INCHES HAS FALLEN THROUGH MID
  EVENING. 

* TOTAL SNOWFALL...6 TO 9 INCHES.

* WIND AND VISIBILITY...WEST TO SOUTHWEST WIND OF 30 TO 40 MPH
  WITH GUSTS OF 50 MPH OVER THE EXPOSED RIDGES AND HIGHEST
  ELEVATIONS. THE COMBINATION OF SNOW AND WIND WILL REDUCE THE
  VISIBILITY TO BELOW ONE QUARTER OF A MILE AND OCCASIONALLY TO
  NEAR ZERO.

* MAIN IMPACT...TRAVEL WILL LIKELY BECOME DIFFICULT AS ROADS
  BECOME SNOW PACKED AND SLICK WITH POOR VISIBILITY...INCLUDING
  SALT RIVER PASS. BEFORE TRAVELING MOTORISTS SHOULD CHECK THE
  LATEST ROAD CONDITIONS BY VISITING WYOROAD.INFO OR BY DIALING 5
  1 1. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW
AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

&&

$$

WYZ014-191200-
/O.CON.KRIW.WW.Y.0010.000000T0000Z-160219T1200Z/
WIND RIVER MOUNTAINS WEST-
759 PM MST THU FEB 18 2016

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

* TIMING...SNOW WILL CONTINUE THROUGH THE NIGHT. 

* SNOW ACCUMULATION...6 TO 12 INCHES EXCEPT 3 TO 6 INCHES ON 
  SOUTH PASS. 

* WIND AND VISIBILITY...WEST TO SOUTHWEST AT 30 TO 40 MPH WITH
  GUSTS TO 60 MPH. THE VISIBILITY WILL DROP TO NEAR ZERO AT TIMES
  ON SOUTH PASS.

* MAIN IMPACT...THE COMBINATION OF THESE HIGH WINDS AND SNOWFALL
  WILL RESULT IN EXTREMELY HAZARDOUS DRIVING CONDITIONS ON SOUTH
  PASS. EXPECT EXTENDED PERIODS OF WHITE OUT CONDITIONS ALONG WITH
  SIGNIFICANT DRIFTING OF SNOW. MOTORISTS SHOULD CHECK THE LATEST
  ROAD CONDITIONS BY VISITING WYOROAD.INFO OR BY DIALING 5 1 1. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO STRONG WINDS BLOWING SNOW
AROUND. USE CAUTION WHEN TRAVELING...ESPECIALLY IN OPEN AREAS.

&&

$$

266 
WWUS45 KRIW 190810
WSWRIW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
110 AM MST FRI FEB 19 2016


WYZ012-190915-
/O.CAN.KRIW.WS.W.0005.000000T0000Z-160219T1200Z/
TETON AND GROS VENTRE MOUNTAINS-
110 AM MST FRI FEB 19 2016

...WINTER STORM WARNING IS CANCELLED...

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

THE STEADY SNOW IS ENDING AND ANY FURTHER ACCUMULATIONS ARE
EXPECTED TO BE LIGHT.

$$

WYZ001-014-024-190915-
/O.CAN.KRIW.WW.Y.0010.000000T0000Z-160219T1200Z/
YELLOWSTONE NATIONAL PARK-WIND RIVER MOUNTAINS WEST-
SALT RIVER AND WYOMING RANGES-
INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL
110 AM MST FRI FEB 19 2016

...WINTER WEATHER ADVISORY IS CANCELLED...

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

THE STEADY SNOW IS ENDING AND ANY FURTHER ACCUMULATIONS ARE
EXPECTED TO BE LIGHT..

$$

AREA FORECAST DISCUSSION...UPDATE
NATIONAL WEATHER SERVICE RIVERTON WY
1206 PM MST WED FEB 17 2016

.SHORT TERM...WEDNESDAY THROUGH FRIDAY NIGHT

QUITE AN ACTIVE PERIOD IN STORE FOR THE SHORT TERM AS WE HAVE A
VIRTUAL CORNUCOPIA OF WEATHER WITH SNOW...WIND AND EVEN THE
POSSIBILITY OF THUNDERSTORMS. WITH THE CONTRAST IN WEATHER...WE WILL
SPLIT THE DISCUSSION INTO WEST AND EAST OF THE DIVIDE.

WEST OF THE DIVIDE...TODAY LOOKS TO BE A LULL IN THE ACTIVE WEATHER
AS A TRANSITORY RIDGE BUILDS ACROSS THE AREA. HOWEVER...THE LULL
WILL NOT LAST LONG AS THE NEXT IN A SERIES OF PACIFIC SYSTEMS MOVES
INTO THE AREA. MOST OF THE EVENING LOOKS DRY..BUT PRECIPITATION WILL
GET GOING AFTER MIDNIGHT WEDNESDAY NIGHT AND CONTINUE THROUGH MUCH
OF THURSDAY. AT THIS POINT...THE HEAVIEST PRECIPITATION LOOKS TO
OCCUR ON THURSDAY MORNING WITH PASSAGE OF THE TROUGH AXIS AND COLD
FRONT  PROVIDING THE BEST LIFT. IN ADDITION...WITH WITH STRONG 700
MILLIBAR WINDS UP TO 50 KNOTS IT WILL QUITE WINDY AS
WELL....ESPECIALLY ACROSS SOUTHERN WYOMING WHERE HIGH WIND WATCHES
ARE UP.  700 MILLIBAR TEMPERATURES ARE AROUND MINUS 2.5 TO 3 AT
TIMES...SO THERE COULD BE SOME MIXING AT TIMES IN THE VALLEYS THAT
COULD HOLD DOWN ACCUMULATIONS. THE BIGGEST ACCUMULATIONS STILL LOOK
TO BE IN THE TETONS WHERE THE WINTER STORM WATCH HAS BEEN ISSUED.
SNOWFALL AMOUNTS LOOK REASONABLE AT THIS POINT SO WE MADE FEW
CHANGES. LIKE THE PREVIOUS SYSTEMS...THIS SYSTEM IS OF PACIFIC
ORIGIN SO THERE IS NOT A LOT OF COLD AIR ASSOCIATED WITH IT.

THE STEADIEST SNOW WILL END THURSDAY NIGHT ALTHOUGH OROGRAPHIC SNOW
SHOWERS WILL CONTINUE INTO THE NIGHT AND PORTIONS OF
FRIDAY...ALTHOUGH COVERAGE WILL DECREASE AS ANOTHER TRANSITORY RIDGE
BUILDS ACROSS THE STATE. ANOTHER WAVE MAY BRING SOME MORE SNOW FOR
LATER FRIDAY NIGHT BUT AT THIS POINT IT LOOKS WEAKER THAN THE
THURSDAY SYSTEM.

EAST OF THE DIVIDE...TODAY LOOKS TO BE RELATIVE CALM BEFORE THE
STORM.. DRY WEATHER WILL OCCUR WITH THE RIDGE OVER THE AREA. THERE
WILL STILL BE SOME BREEZES LIKE PREVIOUS DAYS BUT NOTHING UNUSUAL
FOR WYOMING. ALL IN ALL...A DAY WITH A MIX OF SUN WITH MID AND HIGH
LEVEL CLOUDS AND ABOVE NORMAL TEMPERATURES.  THIS WILL START TO
CHANGE WEDNESDAY NIGHT THOUGH. AS THE PACIFIC SYSTEM APPROACHES
WESTERN WYOMING THE PRESSURE GRADIENT WILL BEGIN TO TIGHTEN WITH
WIND INCREASING ACROSS THE SOUTHWESTERN WIND CORRIDOR. WIND WILL
PEAK ON THURSDAY AS 700 MILLIBAR WINDS INCREASE TO AS HIGH AS 65
KNOTS ON SOME OF THE MODELS. WITH THE AREA IN THE FAVORED RIGHT
FRONT QUADRANT OF THE JET AND AN APPROACHING FROM PROVIDING SOME
MIXING...HIGH WINDS STILL LOOK TO BE A GOOD PROBABILITY. THE HIGH
WIND WATCHES WILL BE CONTINUED AS IS. AS FOR THE CHANCE OF
PRECIPITATION WITH THE FRONTAL PASSAGE...DOWNSLOPING WILL SHOULD
PREVENT STEADY PRECIPITATION. HOWEVER...THERE ARE ENOUGH DYNAMICS TO
KEEP THE SLIGHT CHANCE IN FOR ALL AREAS. IN ADDITION...THE
ATMOSPHERE LOOKS UNSTABLE ENOUGH FOR MAYBE A BIT OF THUNDER OR
LIGHTNING WITH ANY SHOWERS THAT DEVELOP...MUCH LIKE LAST SUNDAY. THE
CHANCE OF SHOWERS SHOULD END THURSDAY AS THE FRONT SWEEPS TO THE
EAST. WINDS SHOULD ALSO GRADUALLY DECREASE THURSDAY NIGHT AS THE
PRESSURE GRADIENT SLACKENS.

FRIDAY AND FRIDAY NIGHT AT THIS POINT LOOK DRY. IT WILL CONTINUE TO
BE BREEZY TO WINDY ACROSS THE FAVORED AREAS BUT NOT AS WINDY AS
THURSDAY AND THURSDAY NIGHT. TEMPERATURES WILL ALSO BE COOLER BEHIND
THE FRONT. HOWEVER...WITH THE PACIFIC ORIGIN OF THE FRONT...ABOVE
NORMAL TEMPERATURES ARE EXPECTED TO CONTINUE.

.LONG TERM...SATURDAY THROUGH WEDNESDAY

GLOBALS MODELS CONTINUE TO INDICATE A STOUT SHORTWAVE TROUGH
QUICKLY PUSHING EAST ACROSS MONTANA SATURDAY...WITH THE
ASSOCIATED PACIFIC COLD FRONT PUSHING ACROSS THE AREA SATURDAY.
THIS SYSTEM WILL RESULT IN BREEZY TO WINDY WESTERLY FLOW ACROSS
MUCH OF THE AREA...WITH THE STRONGEST WINDS EXPECTED SATURDAY
MORNING ACROSS THE CODY FOOTHILLS. ISOLATED TO SCATTERED SNOW
SHOWERS ARE EXPECTED WITH THIS SYSTEM...MAINLY OVER THE
NORTHWESTERN MOUNTAINS...WITH MINOR SNOW ACCUMULATIONS.

DRY CONDITIONS ARE STILL EXPECTED SUNDAY...WITH FLAT RIDGING.

THE ECMWF HAS TRENDED TOWARDS THE GFS OVER THE PAST FEW
NIGHTS...WITH A SHORTWAVE TROUGH PUSHING UP AND OVER A RIDGE OVER
THE WEST COAST SUNDAY...AND DIVING IT SOUTHEAST ACROSS THE
NORTHERN/CENTRAL ROCKIES LATE SUNDAY NIGHT INTO MONDAY EVENING.
HAVE EXPANDED POPS...ESPECIALLY FOR MONDAY...TO INCLUDE MUCH OF
THE AREA...WITH MAINLY SLIGHT VALLEY/CHANCE MTN POPS. ALSO HAVE
COOLED TEMPS A BIT MONDAY.

MAINLY DRY CONDITIONS ARE EXPECTED TUESDAY AND WEDNESDAY AS THE
UPPER RIDGE OVER THE WEST BEGINS TO SHIFT EAST.

&&

.AVIATION.../18Z ISSUANCE/

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

SW FLOW WILL INCREASE ACROSS THE AREA TODAY AHEAD OF AN APPROACHING
COLD FRONT. WINDS WILL MIX DOWN TO THE SFC IN THE BASINS THIS
AFTERNOON. THE COLD FRONT WILL SPREAD INCREASING MTN OBSCURATIONS
AND AREAS OF MVFR/IFR RASN INTO THE FAR WEST VALLEYS...VCNTY KJAC-
KAFO-KEMM...6Z-12Z THURSDAY WITH FREEZING LEVELS BTWN 7KFT-8KFT.
INCREASING S-SW FLOW ALOFT EARLY THURSDAY MORNING WILL ALSO RESULT
IN MORE WIDESPREAD LLWS OVER THE AREA.

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

VFR CONDITIONS WILL PREVAIL ACROSS THE AREA THROUGH THE PERIOD WITH
INCREASING SW FLOW.  LLWS WILL INCREASE ALONG THE EAST SLOPES OF THE
CONTINENTAL DIVIDE THIS AFTN...VCNTY KCOD-KDUB-LND.  SFC SW WINDS
WILL INCREASE TO 20 TO 30KTS WITH GUSTS OVER 40KTS VCNTY 50SM NE
KRKS-KCPR.  THESE CONDITIONS ARE EXPECTED TO PREVAIL THROUGH 12Z
THURSDAY AHEAD OF AN APPROACHING COLD FRONT.

&&

.FIRE WEATHER...

HIGH PRESSURE WILL BUILD IN FROM THE WEST...AND WILL BE RIGHT OVER
US TODAY...WITH STRONG SOUTHWEST FLOW SETTING UP ON THE BACK SIDE OF
THE RIDGE TONIGHT...INTENSIFYING THURSDAY. IN ADDITION...THERE COULD
ALSO BE SOME THUNDERSTORMS ON THURSDAY WITH VERY STRONG GUSTY WINDS.
SNOWFALL WILL EVENTUALLY RETURN...ESPECIALLY WEST OF THE DIVIDE AND
ACROSS THE SOUTH WEDNESDAY NIGHT INTO THURSDAY...WITH SOME SPILLING
EAST OF THE DIVIDE THURSDAY. WIND AND PRECIPITATION WILL WEAKEN
THURSDAY NIGHT.

&&

.RIW WATCHES/WARNINGS/ADVISORIES...
HIGH WIND WATCH FROM THURSDAY MORNING THROUGH THURSDAY EVENING
FOR WYZ005-011-020-022-026>030.

HIGH WIND WATCH FROM THIS AFTERNOON THROUGH THURSDAY EVENING FOR
WYZ015-019.

HIGH WIND WATCH FROM LATE TONIGHT THROUGH THURSDAY EVENING FOR
WYZ018.

WINTER STORM WATCH FROM LATE TONIGHT THROUGH LATE THURSDAY NIGHT
FOR WYZ012.

HIGH WIND WATCH FROM THURSDAY AFTERNOON THROUGH THURSDAY EVENING
FOR WYZ017.

&&

SHORT TERM...HATTINGS
LONG TERM...WM
AVIATION...AEM/LIPSON
FIRE WEATHER...HATTINGS

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RIVERTON WY
104 PM MST WED FEB 17 2016

WYZ001>020-022>030-181400-
YELLOWSTONE NATIONAL PARK-ABSAROKA MOUNTAINS-CODY FOOTHILLS-
NORTH BIG HORN BASIN-SOUTHWEST BIG HORN BASIN-
SOUTHEAST BIG HORN BASIN-OWL CREEK AND BRIDGER MOUNTAINS-
BIGHORN MOUNTAINS WEST-BIGHORN MOUNTAINS SOUTHEAST-
NORTHEAST JOHNSON COUNTY-SOUTHEAST JOHNSON COUNTY-
TETON AND GROS VENTRE MOUNTAINS-JACKSON HOLE-
WIND RIVER MOUNTAINS WEST-WIND RIVER MOUNTAINS EAST-
UPPER WIND RIVER BASIN-WIND RIVER BASIN-LANDER FOOTHILLS-
GREEN MOUNTAINS AND RATTLESNAKE RANGE-
NATRONA COUNTY LOWER ELEVATIONS-CASPER MOUNTAIN-STAR VALLEY-
SALT RIVER AND WYOMING RANGES-UPPER GREEN RIVER BASIN FOOTHILLS-
UPPER GREEN RIVER BASIN-SOUTH LINCOLN COUNTY-
ROCK SPRINGS AND GREEN RIVER-FLAMING GORGE-EAST SWEETWATER COUNTY-
104 PM MST WED FEB 17 2016

...HIGH WIND WARNINGS FOR MUCH OF CENTRAL AND SOUTHWEST WYOMING
TONIGHT THROUGH THURSDAY NIGHT...EXCEPT INTO FRIDAY MORNING ACROSS
THE NORTH...

...WINTER STORM WARNING FOR THE TETONS AND GROS VENTRE RANGES
EARLY THURSDAY THROUGH THURSDAY NIGHT...

...WINTER WEATHER ADVISORIES FOR THE REST OF THE WESTERN MOUNTAINS
LATE TONIGHT THROUGH THURSDAY NIGHT...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING.

.DAY ONE...TODAY AND TONIGHT

TONIGHT...SNOWFALL WILL RETURN TO THE WEST LATE TONIGHT. VERY
STRONG WIND WILL DEVELOP IN PARTS OF CENTRAL WYOMING TONIGHT AND
SPREAD TO MOST OF THE AREA DURING THE DAY THURSDAY. SEE THE
LATEST WINTER AND HIGH WIND STATEMENTS FOR DETAILS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THURSDAY THROUGH THURSDAY NIGHT...PERIODS OF SNOW WILL CONTINUE
ACROSS THE WESTERN MOUNTAINS. POTENTIALLY SIGNIFICANT SNOWFALL
ACCUMULATION WILL BE POSSIBLE ACROSS WESTERN WYOMING...ESPECIALLY
AROUND THE TETONS. VERY STRONG WINDS ARE LIKELY IN MANY AREAS IN
CENTRAL AND SOUTHERN WYOMING. SEE THE LATEST WINTER AND HIGH WIND
STATEMENTS FOR DETAILS.

SATURDAY...WINDY TO STRONG WESTERLY WIND ARE EXPECTED ESPECIALLY
IN THE ROCK SPRINGS TO CASPER WIND CORRIDOR...AS WELL AS THE CODY
FOOTHILLS.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE ENCOURAGED TO REPORT WIND GUSTS GREATER THAN 50 MPH
AND SNOWFALL. THANK YOU.

TEAM RIVERTON