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

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WWUS45 KRIW 281029
WSWRIW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
429 AM MDT Fri Apr 28 2017

...A Spring Snowstorm Continues mainly East of the Continental
Divide through this Evening...

.A cold spring storm will impact mainly the central and eastern
parts of the Cowboy State through this evening with significant
snowfall in some locations. The snow could be mixed with or be
mainly rain below 5000 feet. Then snow is gradually expected to
taper off from north to south this afternoon into tonight.

WYZ004-281130-
/O.CAN.KRIW.WW.Y.0026.000000T0000Z-170428T1800Z/
North Big Horn Basin-
429 AM MDT Fri Apr 28 2017

...WINTER WEATHER ADVISORY IS CANCELLED...

The National Weather Service in Riverton has cancelled the Winter
Weather Advisory.

Early this morning, precipitation over the northern Big Horn Basin
below 5000 feet was mainly rain with temperatures in the mid to
upper 30s. Although a change over to snow remains possible, little
or snow accumulation is expected below 5000 feet with wet roads
expected. Thus the winter weather advisory has been cancelled.
However a winter weather advisory remains in effect for the
mountains, Cody Foothills and southern sections of the Big Horn
Basin for areas primarily above 5000 feet.

$$

WYZ009-290000-
/O.CON.KRIW.WS.W.0015.000000T0000Z-170429T0600Z/
Bighorn Mountains Southeast-
429 AM MDT Fri Apr 28 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* TIMING...Periods of snow will occur through this evening.
  Expect moderate to heavy snow at times.

* SNOW ACCUMULATION...12 to 18 inches.

* MAIN IMPACT...Slushy to snow packed roads will make travel
  difficult on Powder River and Granite Passes. As of 345 AM,
  Powder River Pass was closed.

* OTHER IMPACTS...Heavy snow will reduce visibility below a
  quarter mile at times.

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.

&&

$$

WYZ010-011-290000-
/O.CON.KRIW.WS.W.0015.000000T0000Z-170429T0600Z/
Northeast Johnson County-Southeast Johnson County-
Including the cities of Buffalo and Kaycee
429 AM MDT Fri Apr 28 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* TIMING...Periods of snow through this evening. Snow will be
  moderate to heavy at times.

* SNOW ACCUMULATION...6 to 10 inches, locally higher amounts in
  the foothills of the Bighorn mountains.

* MAIN IMPACT...Roads will be slushy to snow covered especially
  this morning.

* OTHER IMPACTS...Heavy snow will reduce visibility below a
  quarter mile at times.

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.

&&

$$

WYZ020-290000-
/O.CON.KRIW.WS.W.0015.000000T0000Z-170429T0600Z/
Natrona County Lower Elevations-
Including the city of Casper
429 AM MDT Fri Apr 28 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* TIMING...Periods of snow will continue into this evening
  before tapering off.

* TOTAL SNOW ACCUMULATION...5 to 10 inches, with the highest
  amounts in northern and western Natrona County with lesser
  amounts toward Casper.

* MAIN IMPACT...Roads will vary from wet to snow covered with the
  worst conditions north and west of Casper this morning.

* OTHER IMPACTS...Visibility below a half mile at times in heavier
  snow.

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.

&&

$$

WYZ019-290000-
/O.CON.KRIW.WS.W.0015.000000T0000Z-170429T0600Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
429 AM MDT Fri Apr 28 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* TIMING...Periods of snow through this evening. Moderate to
  heavy snow will occur.

* TOTAL SNOW ACCUMULATION...6 to 12 inches.

* MAIN IMPACT...Roads across southeast Fremont County will be
  slushy to snow covered especially this morning. As of 4 AM,
  highway 287, 789 in southeast Fremont County was closed.

* OTHER IMPACTS...Heavy snow will reduce visibility below a
  quarter mile at times.

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.

&&

$$

WYZ015-290000-
/O.CON.KRIW.WS.W.0015.000000T0000Z-170429T0600Z/
Wind River Mountains East-
429 AM MDT Fri Apr 28 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* TIMING...Periods of snow through this evening. Expect moderate
  to heavy snow at times.

* TOTAL SNOW ACCUMULATION...12 to 18 inches.

* MAIN IMPACT...Slushy to snow packed roads will make travel
  difficult, including over South Pass.

* OTHER IMPACTS...Heavy snow will reduce visibility below a
  quarter mile at times.

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.

&&

$$

WYZ001-002-281200-
/O.CON.KRIW.WW.Y.0026.000000T0000Z-170428T1200Z/
Yellowstone National Park-Absaroka Mountains-
Including the cities of Lake, Mammoth, and Old Faithful
429 AM MDT Fri Apr 28 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MDT EARLY
THIS MORNING...

* TIMING...Snow showers will taper off this morning in Yellowstone
  Park and much of the Absaroka Mountains.

* TOTAL SNOW...6 to 12 inches in the mountains. New snow at the
  lower elevations of Yellowstone Park will be 2 inches or less
  overnight...with up to 4 inches near the East Entrance.

* MAIN IMPACT...Highways will become slick and snow covered,
  including Chief Joseph Highway and Highways 14/16/20 west out
  of Cody. Visibility could be reduced to under one quarter mile
  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.

&&

$$

WYZ003-281800-
/O.CON.KRIW.WW.Y.0026.000000T0000Z-170428T1800Z/
Cody Foothills-
Including the cities of Cody and Meeteetse
429 AM MDT Fri Apr 28 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT
TODAY...

* TIMING...Periods of snow. Snow could be mixed with rain below
  5000 feet. Snow will be locally heavy along the foothills. The
  worst conditions in the Cody Foothills will be in the higher
  elevations along highway 120 between Cody and Thermopolis
  including the Meeteetse area.

* TOTAL SNOW...1 to 3 inches in Cody, but 3 to 6 inches above 5500
  feet over the southern sections of the Cody Foothills, including
  the Meeteetse area.

* MAIN IMPACT...Highways will vary from wet to snow covered with
  the worst conditions along the higher elevations of highway 120
  especially between Cody and Thermopolis. Northerly winds of 20
  to 30 mph with gusts of 45 mph in combination with bursts of
  heavier snow will limit visibility to a few hundred feet at
  times on ridge tops.

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.

&&

$$

WYZ005>007-290000-
/O.CON.KRIW.WW.Y.0026.000000T0000Z-170429T0600Z/
Southwest Big Horn Basin-Southeast Big Horn Basin-
Owl Creek and Bridger Mountains-
Including the cities of Thermopolis and Worland
429 AM MDT Fri Apr 28 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* TIMING...Periods of snow above 5000 feet with a rain, snow mix
  below 5000 feet.

* TOTAL SNOW...2 to 6 inches in the lower elevations above 5000
  feet including in the Hamilton Dome area and between Ten Sleep
  and Big Trails. 1 to perhaps 2 inches in Thermopolis on grassy
  areas. Little or no snow accumulation in Worland.

* MAIN IMPACT...Highway 120 between Thermopolis and Cody will
  deteriorate between the Hot Springs Airport and Meeteetse with
  slick and snow covered roads. Northerly winds of 20 to 30 mph
  with gusts of 45 mph in combination with bursts of heavier snow
  will limit visibility to a few hundred feet in northwest Hot
  Springs county. The highway between Thermopolis and Worland
  will be mainly wet.

* OTHER IMPACTS...Additional rock or mudslides could occur in the
  Wind River Canyon due to the precipitation.

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.

&&

$$

WYZ022-290000-
/O.CON.KRIW.WW.Y.0026.000000T0000Z-170429T0600Z/
Casper Mountain-
429 AM MDT Fri Apr 28 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* TIMING...Occasional snow through this evening. Snow will be
  moderate to heavy at times.

* Snow Accumulation...8 to 12 inches with locally higher amounts.

* MAIN IMPACT...Slushy to snow packed roads will make travel
  difficult.

* OTHER IMPACTS...Heavy snow will reduce visibility below a
  quarter mile 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.

&&

$$

WYZ017-018-290000-
/O.CON.KRIW.WW.Y.0026.000000T0000Z-170429T0600Z/
Wind River Basin-Lander Foothills-
Including the cities of Riverton, Shoshoni, and Lander
429 AM MDT Fri Apr 28 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* TIMING...Periods of snow will continue into this evening,
  moderate to heavy at times.

* Snow Accumulation...3 to 6 inches. However, locally heavier
  amounts in more persistent snow bands are possible.

* MAIN IMPACT...Roads may become slushy to snow covered
  especially where heavier snow persists.

* OTHER IMPACTS...Additional rock or mudslides could occur in
  the Wind River Canyon.

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.

&&

$$

WYZ008-290000-
/O.CON.KRIW.WW.Y.0026.000000T0000Z-170429T0600Z/
Bighorn Mountains West-
429 AM MDT Fri Apr 28 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* TIMING...Periods of snow will occur through this evening.

* Snow Accumulation...6 to 12 inches.

* MAIN IMPACT...Slushy to snow packed roads will make travel
  difficult on Powder River and Granite Mountain Passes. As of 4
  AM, Powder River Pass was closed.

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.

&&

$$

WYZ030-290000-
/O.CON.KRIW.WW.Y.0026.000000T0000Z-170429T0600Z/
East Sweetwater County-
Including the city of Wamsutter
429 AM MDT Fri Apr 28 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* TIMING...Periods of snow will develop this morning and
  continue into the evening.

* TOTAL SNOW...2 to 4 inches; with the highest amounts in the
  east.

* MAIN IMPACT...Highways may slick and snow covered, including
  Interstate 80.

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.

&&

$$

TEAM RIVERTON/21



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