Winter Weather Warnings / Watches / Advisories
Issued by NWS Riverton, WY

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WWUS45 KRIW 230309
WSWRIW

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
809 PM MST SUN JAN 22 2017

...SIGNIFICANT SNOW OVER WESTERN WYOMING THROUGH MONDAY WITH SNOW
SPREADING EAST OF THE DIVIDE LATE MONDAY INTO MONDAY NIGHT...

.A STRONG, MOIST PACIFIC WINTER STORM WILL IMPACT WESTERN WYOMING
THROUGH AT LEAST THE DAY MONDAY WITH PERIODS OF MODERATE TO HEAVY
SNOW. THE SNOW IS EXPECTED TO DECREASE IN COVERAGE AND BECOME
LIGHTER LATE MONDAY INTO MONDAY NIGHT IN MOST AREAS OVER THE
WEST, AS THE WINTER STORM BEGINS TO IMPACT AREAS EAST OF THE
DIVIDE. SNOW IS EXPECTED TO BREAKOUT ACROSS NORTHERN AND CENTRAL
WYOMING, EAST OF THE DIVIDE, MONDAY AFTERNOON INTO MONDAY EVENING
AS A COLD FRONT DEVELOPS, AND DROPS SOUTH ACROSS THE AREA. LIGHT
TO MODERATE AMOUNTS OF SNOW ARE EXPECTED EAST OF THE DIVIDE BY
MIDDAY TUESDAY. SNOW IS EXPECTED TO DECREASE TO VERY LIGHT SNOW,
OR COME TO A STOP ACROSS THE ENTIRE AREA FROM NORTH TO SOUTH
TUESDAY AFTERNOON.

WYZ012-013-231130-
/O.CON.KRIW.WS.W.0003.000000T0000Z-170124T0000Z/
TETON AND GROS VENTRE MOUNTAINS-JACKSON HOLE-
INCLUDING THE CITY OF...JACKSON
809 PM MST SUN JAN 22 2017

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

* TIMING...PERSISTENT SNOWFALL THROUGH AT LEAST NOON MONDAY WITH
  BURSTS OF HEAVY SNOW AT TIMES. SOME SNOWFALL IS EXPECTED THROUGH
  MONDAY NIGHT, BEFORE TAPERING OFF ON TUESDAY. HOWEVER THE
  SNOWFALL MONDAY NIGHT AND TUESDAY, CURRENTLY IS EXPECTED TO BE
  LIGHTER THAN WHAT OCCURS THROUGH THE DAY MONDAY.

* SNOW TOTALS...5 TO 10 INCHES IN THE VALLEYS. 10 TO 18 INCHES
  IN THE MOUNTAINS.

* VISIBILITY...QUARTER TO HALF MILE IN HEAVIER SNOW. AREAS OF
  BLOWING SNOW MAINLY IN THE MOUNTAINS TONIGHT, ESPECIALLY IN OPEN
  AREAS.

* IMPACTS...TETON PASS IS SCHEDULED TO BE CLOSED FOR AVALANCHE
  CONTROL BEGINNING AT 3 AM MONDAY MORNING. ROADS AND HIGHWAYS
  WILL BE SLICK AND SNOW PACKED. PLEASE MONITOR JHAVALANCHE.ORG IF
  YOUR PLANS INCLUDE TRAVEL INTO THE BACK COUNTRY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW, AND OR
BLOWING SNOW ARE EXPECTED OR OCCURRING. THIS COULD MAKE TRAVEL
VERY HAZARDOUS OR IMPOSSIBLE. IF YOU MUST TRAVEL KEEP SOME FOOD,
WATER, AND AN EXTRA FLASHLIGHT IN YOUR VEHICLE IN CASE OF AN
EMERGENCY. CHECK THE LATEST ROAD CONDITIONS AT WYOROAD.INFO OR BY
DIALING 5 1 1.

&&

$$

WYZ023-024-027-231130-
/O.CON.KRIW.WS.W.0003.000000T0000Z-170124T0000Z/
STAR VALLEY-SALT RIVER AND WYOMING RANGES-SOUTH LINCOLN COUNTY-
INCLUDING THE CITIES OF...AFTON...ALPINE...STAR VALLEY RANCH...
THAYNE...KEMMERER...COKEVILLE
809 PM MST SUN JAN 22 2017

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

* TIMING...PERSISTENT SNOWFALL THROUGH AT LEAST NOON MONDAY WITH
  BURSTS OF HEAVY SNOW AT TIMES. SOME SNOWFALL IS EXPECTED THROUGH
  MONDAY NIGHT, BEFORE TAPERING OFF ON TUESDAY. HOWEVER THE
  SNOWFALL MONDAY NIGHT AND TUESDAY, CURRENTLY IS EXPECTED TO BE
  LIGHTER THAN WHAT OCCURS THROUGH THE DAY MONDAY.

* SNOW TOTALS...5 TO 10 INCHES IN THE VALLEYS. 9 TO 16 INCHES IN
  THE MOUNTAINS.

* VISIBILITY...QUARTER TO HALF MILE IN HEAVIER SNOW. AREAS OF
  BLOWING SNOW MAINLY IN THE MOUNTAINS TONIGHT, ESPECIALLY IN OPEN
  AREAS.

* IMPACTS...ROADS AND HIGHWAYS WILL BECOME SLICK AND SNOW PACKED
  AND TRAVEL WILL BE DIFFICULT AT TIMES. PLEASE MONITOR
  JHAVALANCHE.ORG IF YOUR PLANS INCLUDE TRAVEL INTO THE BACK
  COUNTRY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW, AND OR
BLOWING SNOW ARE EXPECTED OR OCCURRING. THIS COULD MAKE TRAVEL
VERY HAZARDOUS OR IMPOSSIBLE. IF YOU MUST TRAVEL KEEP SOME FOOD,
WATER, AND AN EXTRA FLASHLIGHT IN YOUR VEHICLE IN CASE OF AN
EMERGENCY. CHECK THE LATEST ROAD CONDITIONS AT WYOROAD.INFO OR BY
DIALING 5 1 1.

&&

$$

WYZ001-231130-
/O.CON.KRIW.WW.Y.0004.000000T0000Z-170124T0000Z/
YELLOWSTONE NATIONAL PARK-
INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL
809 PM MST SUN JAN 22 2017

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

* TIMING...PERIODS OF LIGHT TO MODERATE SNOW THROUGH THE DAY
  MONDAY. SNOW IS EXPECTED TO TAPER TO VERY LIGHT SNOW OR STOP
  DURING MONDAY EVENING.

* SNOW TOTALS...1 TO 4 INCHES IN THE MAMMOTH AND TOWER FALLS
  AREAS. ELSEWHERE 3 TO 7 INCHES IN THE LOWER ELEVATIONS, AND 6 TO
  12 INCHES IN THE MOUNTAINS, WITH THE HEAVIEST SNOWFALL OVER THE
  SOUTHWEST AND SOUTHERN SECTIONS OF YELLOWSTONE.

* VISIBILITY...UNDER A MILE AT TIMES IN HEAVIER SNOW.

* MAIN IMPACT...REDUCED VISIBILITY COULD BE VERY DISORIENTING TO
  PEOPLE RECREATING IN YELLOWSTONE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS PERIODS OF SNOW WILL
CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED
AND SLICK ROADS WITH LIMITED VISIBILITIES. SLOW DOWN, AND ALLOW
EXTRA TIME TO REACH YOUR DESTINATION. CHECK THE LATEST ROAD
CONDITIONS AT WYOROAD.INFO OR BY DIALING 5 1 1.

&&

$$

WYZ025-026-231130-
/O.CON.KRIW.WW.Y.0004.000000T0000Z-170124T0000Z/
UPPER GREEN RIVER BASIN FOOTHILLS-UPPER GREEN RIVER BASIN-
INCLUDING THE CITIES OF...PINEDALE...LA BARGE...BIG PINEY...
FARSON
809 PM MST SUN JAN 22 2017

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

* TIMING...PERSISTENT SNOWFALL THROUGH AT LEAST NOON MONDAY WITH
  BURSTS OF HEAVY SNOW AT TIMES. SOME SNOWFALL IS EXPECTED THROUGH
  MONDAY NIGHT, BEFORE TAPERING OFF ON TUESDAY. HOWEVER THE
  SNOWFALL MONDAY NIGHT AND TUESDAY, CURRENTLY IS EXPECTED TO BE
  LIGHTER THAN WHAT OCCURS THROUGH THE DAY MONDAY.

* SNOW TOTALS...3 TO 6 INCHES. LOCALLY HIGHER AMOUNTS NEAR 9
  INCHES COULD OCCUR BETWEEN DANIEL AND BONDURANT.

* VISIBILITY...QUARTER TO HALF MILE IN MODERATE TO HEAVY SNOWFALL.

* MAIN IMPACT...ROADS AND HIGHWAYS WILL BE SLICK AND SNOW PACKED
  AND TRAVEL WILL BE DIFFICULT AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS PERIODS OF SNOW WILL
CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED
AND SLICK ROADS WITH LIMITED VISIBILITIES. SLOW DOWN, AND ALLOW
EXTRA TIME TO REACH YOUR DESTINATION. CHECK THE LATEST ROAD
CONDITIONS AT WYOROAD.INFO OR BY DIALING 5 1 1.

&&

$$

WYZ014-015-231130-
/O.CON.KRIW.WW.Y.0004.000000T0000Z-170124T0000Z/
WIND RIVER MOUNTAINS WEST-WIND RIVER MOUNTAINS EAST-
809 PM MST SUN JAN 22 2017

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

* TIMING...PERIODS OF SNOW, HEAVY AT TIMES, THROUGH AT LEAST THE
  DAY MONDAY, WITH AN EMPHASIS ACROSS THE WESTERN SLOPES OF THE
  WIND RIVER MOUNTAINS. LIGHT TO MODERATE SNOW COULD CONTINUE
  THROUGH THE DAY TUESDAY...BEFORE FINALLY TAPERING OFF LATE
  TUESDAY.

* SNOW TOTALS...6 TO 12 INCHES WITH ISOLATED HIGHER AMOUNTS.

* WIND AND VISIBILITY...SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS
  TO 35 MPH CAUSING BLOWING AND DRIFTING SNOW WITH VISIBILITY
  BELOW A QUARTER MILE.

* MAIN IMPACT...ROADS AND HIGHWAYS WILL BECOME SLICK AND SNOW
  PACKED AND TRAVEL WILL BE DIFFICULT AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE SEVERELY LIMITED DUE TO STRONG WINDS BLOWING
SNOW AROUND. USE CAUTION WHEN TRAVELING, ESPECIALLY IN OPEN
AREAS. CHECK THE LATEST ROAD CONDITIONS AT WYOROAD.INFO OR BY
DIALING 5 1 1.

&&

$$

WYZ002-231130-
/O.CON.KRIW.WW.Y.0004.170123T0600Z-170124T1200Z/
ABSAROKA MOUNTAINS-
809 PM MST SUN JAN 22 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 11 PM THIS
EVENING TO 5 AM MST TUESDAY...

* TIMING...LIGHT SNOW WILL MOVE INTO AND INCREASE IN EXTENT ACROSS
  NORTHWESTERN WYOMING TONIGHT...BECOMING MODERATE TO HEAVY AT
  TIMES THROUGH TUESDAY MORNING.

* SNOW TOTALS...6 TO 12 INCHES.

* WIND AND VISIBILITY...SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO
  35 MPH CAUSING BLOWING AND DRIFTING SNOW WITH VISIBILITY BELOW A
  QUARTER MILE TONIGHT. WINDS ARE EXPECTED TO DECREASE MONDAY
  REDUCING THE AMOUNT OF BLOWING SNOW, BUT VISIBILITY IN HEAVIER
  SNOW BURSTS WILL STILL BE UNDER A HALF MILE AT TIMES.

* MAIN IMPACT...ROADS AND HIGHWAYS WILL BECOME SLICK AND SNOW
  PACKED AND TRAVEL WILL BE DIFFICULT AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE SEVERELY LIMITED DUE TO STRONG WINDS BLOWING
SNOW AROUND. USE CAUTION WHEN TRAVELING... ESPECIALLY IN OPEN
AREAS. CHECK THE LATEST ROAD CONDITIONS AT WYOROAD.INFO OR BY
DIALING 5 1 1.

&&

$$

TEAM RIVERTON/21



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