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

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WWUS45 KRIW 232306
WSWRIW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
406 PM MST Thu Feb 23 2017

...Heavy snow and strong wind will continue to impact much of
Central and Southern Wyoming for the rest of this afternoon
through mid day Friday...

.A very strong winter storm is moving over extreme Southern
Wyoming this afternoon has stalled out near the Colorado border.
This strong winter storm will slowly wind down and shift east of
the area tonight. The heaviest snow for most areas will be through
about 6 pm early this evening. This storm system will also be
accompanied by strong winds in many areas, with blizzard
conditions expected along Interstate 80 near and east of Rock
Springs...over South Pass and in the Jeffrey City...Sweetwater
Station...Muddy Gap area. These winds will subside during the
overnight hours tonight. Light to occasionally moderate snow will
continue tonight. Light snow with isolated pockets of moderate
snow will continue Friday through 12 noon.

WYZ014-015-240715-
/O.CON.KRIW.BZ.W.0001.000000T0000Z-170224T1800Z/
Wind River Mountains West-Wind River Mountains East-
406 PM MST Thu Feb 23 2017

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 11 AM MST FRIDAY...

* Timing...Snow, heavy at times, will continue across the range through
  this evening. Snow will continue tonight... before subsiding by
  mid day Friday.

* Snowfall...14 to 18 inches have fallen so far. 19 to 23 inches
  are expected...mainly on the southern end of the mountains.

* WINDS/VISIBILITY...Northeast winds will increase this morning
  to 35 to 45 mph with gusts 55 to 65 mph, causing blizzard
  conditions and zero visibility through this evening. Winds
  will gradually decrease later tonight into Friday morning.

* Main impact...Travel will become difficult to impossible
  across South Pass due to the snow, producing slick... snow-
  packed roads...and whiteout conditions due to strong northeast
  winds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions...making travel extremely dangerous. Do not travel. If
you must travel...have a winter survival kit with you. If you get
stranded...stay with your vehicle.

&&

$$

WYZ030-240715-
/O.CON.KRIW.BZ.W.0001.000000T0000Z-170224T1800Z/
East Sweetwater County-
Including the city of Wamsutter
406 PM MST Thu Feb 23 2017

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 11 AM MST FRIDAY...

* TIMING...After a lull in the snowfall this afternoon, another
  period of heavier snowfall is expected through the early evening hours.
  Snow will continue tonight... before subsiding by mid day
  Friday.

* SNOWFALL...6 inches fell this morning. After the snow increases
  again, A snow total of 8 to 15 inches is expected by Friday.

* WINDS/VISIBILITY...Northwest to north wind increasing this
  morning to 30 to 40 mph with gusts 50 to 60 mph causing
  blizzard conditions and zero visibility through this evening
  before gradually tapering off later tonight into Friday
  morning.

* Main impact...Travel may become nearly impossible due to the
  heavy snow...very strong wind and near zero visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions...making travel extremely dangerous. Do not travel. If
you must travel...have a winter survival kit with you. If you get
stranded...stay with your vehicle.

&&

$$

WYZ019-240715-
/O.CON.KRIW.BZ.W.0001.000000T0000Z-170224T1800Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
406 PM MST Thu Feb 23 2017

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 11 AM MST FRIDAY...

* TIMING...After somewhat of a lull in the snowfall this
  afternoon, another period of heavier snowfall is expected
  through the early evening hours. Snow will continue tonight...
  before subsiding by mid day Friday.

* SNOWFALL...5 inches of snow fell as of this morning. A snow
  total of 12 to 18 inches is expected.

* WINDS/VISIBILITY...Northeast wind 30 to 40 mph with gusts over
  50 mph causing blizzard conditions through this evening.
  Visibilities will be near zero at times. Winds will start to
  decrease later tonight into Friday morning.

* Main impact...Travel may become nearly impossible due to the
  heavy snow...very strong cross winds and near zero visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions...making travel extremely dangerous. Do not travel. If
you must travel...have a winter survival kit with you. If you get
stranded...stay with your vehicle.

&&

$$

WYZ020-022-240715-
/O.CON.KRIW.WS.W.0009.000000T0000Z-170224T1800Z/
Natrona County Lower Elevations-Casper Mountain-
Including the city of Casper
406 PM MST Thu Feb 23 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST
FRIDAY...

* TIMING...Snow, heavy at times, will continue across the range
  through this evening. Snow will continue tonight... before
  subsiding by mid day Friday.

* SNOWFALL ACCUMULATION...8 inches of snow has fallen in the
  Casper area so far with up to 13 inches on Casper Mountain. Snow
  totals will range from Ranging from up to 2 feet on Casper
  Mountain, with 12 to 16 inches across the rest of Natrona
  County.

* Wind and Visibility...Northeast wind 20 to 30 mph with gusts
  over 45 mph in open areas causing visibilities under one quarter
  mile at times. The winds will diminish early this evening.

* MAIN IMPACT...Roads will be slick and snow covered. Gusty
  northeast winds will occur through late this afternoon causing
  blowing and drifting snow. This could significantly reduce
  visibility and make travel difficult to impossible.

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.

&&

$$

WYZ010-011-240715-
/O.CON.KRIW.WS.W.0009.000000T0000Z-170224T1800Z/
Northeast Johnson County-Southeast Johnson County-
Including the cities of Buffalo and Kaycee
406 PM MST Thu Feb 23 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST
FRIDAY...

* TIMING...Snow will increase this morning with periods of heavy
  snow possible during the day today. Snow will gradually
  decrease tonight into Friday morning.

* SNOWFALL ACCUMULATION...5 to 9 inches with the heavier amounts
  generally in the southern half of the county.

* Wind and Visibility...North wind 25 to 35 mph with gusts
  around 50 mph causing considerable blowing and drifting snow
  and near zero visibility at times.

* MAIN IMPACT...Roads will be slick and snow covered. Strong
  north wind will cause blowing and drifting snow through the
  remainder of this afternoon. The visibility will become
  significantly reduced in blowing 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.

&&

$$

WYZ017-018-240715-
/O.CON.KRIW.WS.W.0009.000000T0000Z-170224T1800Z/
Wind River Basin-Lander Foothills-
Including the cities of Riverton, Shoshoni, and Lander
406 PM MST Thu Feb 23 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST
FRIDAY...

* TIMING...Snow will continue, heavy at times through this
  evening before gradually tapering off into Friday morning.

* SNOWFALL ACCUMULATION...7 to 10 inches have fallen so far in the
  Lander Riverton area. 4 to 5 inches fave fallen to the northwest
  in Kinnear. A snow total of 12 to 18 inches is expected in
  Eastern Fremont County, 10 to 14 inches in the Riverton/Lander
  area, 5 to 6 inches around Kinnear and Pavillion. Locally
  higher amounts will be possible between Riverton and Lander.

* Wind and visibility...North wind 20 to 30 mph with gusts around
  40 mph in open areas creating blowing and drifting snow and
  visibilities under one quarter mile at times. The winds will
  diminish this evening.

* MAIN IMPACT...Roads will be slick and snow covered. Blowing and
  drifting snow may significantly reduce visibility and could
  make travel rather difficult. Careful footing is advised as
  there will likely be hidden patches of ice and deep puddles of
  water beneath the fresh snow cover.

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.

&&

$$

WYZ028-029-240715-
/O.CON.KRIW.WS.W.0009.000000T0000Z-170224T1800Z/
Rock Springs and Green River-Flaming Gorge-
Including the cities of Rock Springs and Green River
406 PM MST Thu Feb 23 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST
FRIDAY...

* TIMING...Snow will continue, heavy at times through this
  evening before gradually tapering off into Friday morning.

* SNOWFALL ACCUMULATION...12 to 15 inches have fallen so far. A
  storm total of 14 to 17 inches is expected.

* Visibility and wind...North to northwest wind 20 to 30 mph
  with gusts to 45 mph in open areas creating areas of blowing
  and drifting snow and visibilities under one quarter mile at
  times.

* MAIN IMPACT...Roads, including Interstate 80, will be slick and
  snow covered. Considerable blowing and drifting snow could make
  travel difficult in blowing and drifting 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.

&&

$$

WYZ007-240715-
/O.CON.KRIW.WS.W.0009.000000T0000Z-170224T1800Z/
Owl Creek and Bridger Mountains-
406 PM MST Thu Feb 23 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST
FRIDAY...

* TIMING...Snow will continue this morning, and may be heavy at
  times through this evening. Snow will continue tonight, before
  subsiding by mid day Friday.

* SNOWFALL ACCUMULATION...6 to 12 inches, with the higher
  amounts expected over the Bridger Mountains.

* MAIN IMPACT...Roads will be slick and snow covered. Blowing and
  drifting snow could make travel rather difficult, including
  travel through the Wind River Canyon. Blowing snow may significantly
  reduce visibility, especially at the southern end of the Wind
  River Canyon.

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.

&&

$$

WYZ009-240715-
/O.CON.KRIW.WW.Y.0011.000000T0000Z-170224T1800Z/
Bighorn Mountains Southeast-
406 PM MST Thu Feb 23 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST
FRIDAY...

* TIMING...The heaviest snowfall will occur through this evening
  before subsiding tonight into Friday morning.

* SNOWFALL ACCUMULATION...1 to 2 inches have fallen so far. 3 to ally
  4 inches near Powder River Pass and over the southern end of
  the mountains.

* MAIN IMPACT...Roads will may become slick and snow covered.
  Gusty north winds could cause blowing and drifting snow
  Thursday. The visibility may become significantly reduced in
  blowing snow.

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.

&&

$$

WYZ005-240715-
/O.CON.KRIW.WW.Y.0011.000000T0000Z-170224T1800Z/
Southwest Big Horn Basin-
Including the city of Thermopolis
406 PM MST Thu Feb 23 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST
FRIDAY...

* TIMING...The heaviest snowfall will occur through this evening
  before subsiding tonight into Friday morning.

* Snowfall...6 to 7 inches have fallen southeast of Thermopolis so
  far. Snow totals will be 5 to 8 inches.

* Wind and Visibility...North wind 15 to 25 mph with gusts up to
  35 mph creating areas of blowing and drifting snow and
  visibilities under one half mile at times. Winds will diminish
  this evening.

* MAIN IMPACT...Roads will be slick and snow covered. Gusty north
  winds could cause blowing and drifting snow Thursday. The
  visibility may become significantly reduced in blowing snow.

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.

&&

$$

WYZ003-240715-
/O.CON.KRIW.WW.Y.0011.000000T0000Z-170224T1800Z/
Cody Foothills-
Including the cities of Cody and Meeteetse
406 PM MST Thu Feb 23 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST
FRIDAY...

* TIMING...The heaviest snowfall will occur through this evening
  before subsiding tonight into Friday morning.

* Snowfall...3 to 6 inches with the heaviest amounts from around
  Meeteetse south.

* Wind and Visibility...North wind 20 to 30 mph with gusts to 40
  mph creating areas of blowing and drifting snow and visibilities
  under one half mile at times. Winds will diminish this evening.

* MAIN IMPACT...Roads will be slick and snow covered. Gusty north
  winds could cause blowing and drifting snow Thursday. The
  visibility may become significantly reduced in blowing snow.

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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