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

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WWUS45 KRIW 281810
WSWRIW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
1210 PM 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 in the Big Horn Basin. Then snow is
gradually expected to taper off from north to south this
afternoon into tonight.

WYZ005>007-281915-
/O.CAN.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
1210 PM MDT Fri Apr 28 2017

...WINTER WEATHER ADVISORY IS CANCELLED...

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

The precipitation will be gradually diminishing during the rest
of the day today as the storm system responsible for the mixture
of rain and higher elevation snow that has occurred over the area
is exiting to the south toward Colorado. In addition, temperatures
will be too warm for the rest of the day to support any snowfall
accumulation. Therefore the winter weather advisory for the
Southern Big Horn Basin has been cancelled.

$$

WYZ003-281915-
/O.EXP.KRIW.WW.Y.0026.000000T0000Z-170428T1800Z/
Cody Foothills-
Including the cities of Cody and Meeteetse
1210 PM MDT Fri Apr 28 2017

...WINTER WEATHER ADVISORY WILL EXPIRE AT NOON MDT TODAY...

The snowfall in the Cody Foothills is diminishing as the storm
center responsible for the snowfall exits south into Colorado.
Therefore the winter weather advisory for the Cody Foothills has
been allowed to expire. Snow flurries or light snow showers are
likely to continue for the rest of the afternoon.

$$

WYZ009-282200-
/O.CON.KRIW.WS.W.0015.000000T0000Z-170429T0600Z/
Bighorn Mountains Southeast-
1210 PM 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.

* TOTAL SNOW ACCUMULATION...Snowfall has ranged from 5 to 16
  inches so far. Snow totals of 7 to 18 inches.

* MAIN IMPACT...Slushy to snow packed roads will make travel
  difficult on Powder River and Granite Passes. As of 12 PM,
  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.

&&

$$

WYZ010-011-282200-
/O.CON.KRIW.WS.W.0015.000000T0000Z-170429T0600Z/
Northeast Johnson County-Southeast Johnson County-
Including the cities of Buffalo and Kaycee
1210 PM 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.

* TOTAL SNOW ACCUMULATION...Some areas southwest of Buffalo have
  already received 10 inches of snowfall. Expect a total of 6 to
  10 inches in most areas. Locally higher amounts in the
  foothills of the Bighorn mountains.

* MAIN IMPACT...Roads will be slushy to snow covered especially
  this morning. As of 12 PM, 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.

&&

$$

WYZ020-282200-
/O.CON.KRIW.WS.W.0015.000000T0000Z-170429T0600Z/
Natrona County Lower Elevations-
Including the city of Casper
1210 PM 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...4 inches of snowfall have already
  occurred southwest of Casper. 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.

&&

$$

WYZ019-282200-
/O.CON.KRIW.WS.W.0015.000000T0000Z-170429T0600Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
1210 PM 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...10 inches of snowfall have already
  occurred in Bairoil. Expect a snow total of 6 to 12 inches in
  most areas.

* MAIN IMPACT...Roads across southeast Fremont County will be
  slushy to snow covered especially this morning. As of 12 PM,
  highway 287, 789 in southeast Fremont County was still 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.

&&

$$

WYZ015-282200-
/O.CON.KRIW.WS.W.0015.000000T0000Z-170429T0600Z/
Wind River Mountains East-
1210 PM 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...Accumulations so far include 14 inches
  near Frye Lake. An estimated 11 inches has fallen near South
  Pass. Snow totals will range from 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.

&&

$$

WYZ022-282200-
/O.CON.KRIW.WW.Y.0026.000000T0000Z-170429T0600Z/
Casper Mountain-
1210 PM 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.

* TOTAL SNOW ACCUMULATION...8 to 12 inches with locally higher
  amounts. 9 inches has accumulated so far over portions of the
  mountain.

* 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.

&&

$$

WYZ017-018-282200-
/O.CON.KRIW.WW.Y.0026.000000T0000Z-170429T0600Z/
Wind River Basin-Lander Foothills-
Including the cities of Riverton, Shoshoni, and Lander
1210 PM 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.

* TOTAL SNOW ACCUMULATION...Accumulations so far range from around
  an inch in Riverton to 5 inches over the higher terrain above
  5500 feet. Total snowfall expected will range from 3 to 6
  inches. However, locally heavier amounts in more persistent snow
  bands are possible over the higher terrain.

* 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. As of 530 AM, highway 287, 789 in
  southeast Fremont County, as well as the Wind River Canyon 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.

&&

$$

WYZ008-282200-
/O.CON.KRIW.WW.Y.0026.000000T0000Z-170429T0600Z/
Bighorn Mountains West-
1210 PM 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...3 to 9 inches have accumulated so far. 6 to
  12 inches expected.

* MAIN IMPACT...Slushy to snow packed roads will make travel
  difficult on Powder River and Granite Mountain Passes. As of
  530 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.

&&

$$

WYZ030-282200-
/O.CON.KRIW.WW.Y.0026.000000T0000Z-170429T0600Z/
East Sweetwater County-
Including the city of Wamsutter
1210 PM MDT Fri Apr 28 2017

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

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

* TOTAL SNOW...2 to 4 inches with isolated higher amounts
  between Wamsutter and the Carbon County line.

* MAIN IMPACT...Highways may become 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.

&&

$$



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