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

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WWUS45 KRIW 222149
WSWRIW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
249 PM MST Wed Feb 22 2017

...Heavy snow and strong wind impact much of Central and Southern
Wyoming as early as this evening through mid day Friday...

.A very strong winter storm is expected to move into Southern
Wyoming tonight and stall out during the day before slowly winding
down and shifting east of the area later Friday. The heaviest snow
for most areas will be later tonight through Thursday. This storm
system will also be accompanied by strong winds in many areas with
blizzard conditions expected along Interstate 80 east of Rock
Springs...over South Pass and in the Jeffrey City...Sweetwater
Station area later tonight through Thursday.

WYZ030-231100-
/O.UPG.KRIW.WS.A.0012.170223T0600Z-170224T1800Z/
/O.NEW.KRIW.BZ.W.0001.170223T0000Z-170224T1800Z/
East Sweetwater County-
Including the city of Wamsutter
249 PM MST Wed Feb 22 2017

...BLIZZARD WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM
MST FRIDAY...

The National Weather Service in Riverton has issued a Blizzard
Warning, which is in effect from 5 PM this afternoon to 11 AM MST
Friday. The Winter Storm Watch is no longer in effect.

* TIMING...Periods of light snow this afternoon will gradually
  increase tonight...becoming heavy at times and continuing
  through Thursday. Light to moderate snow will continue into
  Friday morning. The heaviest snowfall and strongest wind should
  occur between the predawn hours Thursday and Thursday evening.

* SNOWFALL...8 to 15 inches with the heavier amounts along and
  north of Interstate 80.

* WINDS/VISIBILITY...Northwest to north wind increasing overnight
  to 30 to 40 mph with gusts 50 to 60 mph causing blizzard
  conditions and zero visibility from early Thursday through
  Thursday evening before gradually tapering off later Thursday
  night and Friday.

* 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.

&&

$$

WYZ019-231100-
/O.UPG.KRIW.WS.A.0012.170223T0600Z-170224T1800Z/
/O.NEW.KRIW.BZ.W.0001.170223T0600Z-170224T1800Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
249 PM MST Wed Feb 22 2017

...BLIZZARD WARNING IN EFFECT FROM 11 PM THIS EVENING TO 11 AM
MST FRIDAY...

The National Weather Service in Riverton has issued a Blizzard
Warning, which is in effect from 11 PM this evening to 11 AM MST
Friday. The Winter Storm Watch is no longer in effect.

* TIMING...Snow will develop tonight...and may become heavy at
  times from the predawn hours Thursday through early Thursday
  evening. Snow will continue into Friday morning before tapering
  off to flurries.

* SNOWFALL...12 to 18 inches.

* WINDS/VISIBILITY...Becoming Northeast 30 to 40 mph with gusts
  over 50 mph causing blizzard conditions later tonight through
  Thursday evening. Visibilities will be near zero at times. Winds
  will start to decrease later Thursday night 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.

&&

$$

WYZ014-015-231100-
/O.UPG.KRIW.WS.A.0012.170223T0600Z-170224T1800Z/
/O.NEW.KRIW.BZ.W.0001.170223T0600Z-170224T1800Z/
Wind River Mountains West-Wind River Mountains East-
249 PM MST Wed Feb 22 2017

...BLIZZARD WARNING IN EFFECT FROM 11 PM THIS EVENING TO 11 AM
MST FRIDAY...

The National Weather Service in Riverton has issued a Blizzard
Warning, which is in effect from 11 PM this evening to 11 AM MST
Friday. The Winter Storm Watch is no longer in effect.

* Timing...Snow will develop later this evening night...and become
  heavy at times from the predawn hours Thursday through Thursday
  evening. Snow will continue through Thursday night...before
  subsiding by mid day Friday.

* Snowfall...10 to 15 inches are expected...mainly on the southern
  end of the mountains.

* WINDS/VISIBILITY...Northeast will increase overnight to 35 to 45
  mph with gusts 55 to 65 mph causing blizzard conditions and zero
  visibility through at least Thursday evening. Winds will
  gradually decrease later Thursday night 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
  developing early Thursday morning.

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.

&&

$$

WYZ020-022-231100-
/O.UPG.KRIW.WS.A.0012.170223T0600Z-170224T1800Z/
/O.NEW.KRIW.WS.W.0009.170223T0600Z-170224T1800Z/
Natrona County Lower Elevations-Casper Mountain-
Including the city of Casper
249 PM MST Wed Feb 22 2017

...WINTER STORM WARNING IN EFFECT FROM 11 PM THIS EVENING TO
11 AM MST FRIDAY...

The National Weather Service in Riverton has issued a Winter
Storm Warning for snow and wind, which is in effect from 11 PM
this evening to 11 AM MST Friday. The Winter Storm Watch is no
longer in effect.

* TIMING...Snow will develop tonight, and become heavy at times
  from the predawn hours Thursday through Thursday evening. Snow
  will continue through Thursday night, before subsiding by mid
  day Friday.

* SNOWFALL ACCUMULATION...Ranging from up to 2 feet on Casper
  Mountain, with 12 to 16 inches across Natrona County.

* Wind and Visibility...Northeast 20 to 30 mph with gusts over 40
  mph in open areas causing visibilities under one quarter mile at
  times due to snow falling and blowing around.

* MAIN IMPACT...Roads will become slick and snow covered. Gusty
  northeast winds will develop early Thursday morning, 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.

&&

$$

WYZ010-011-231100-
/O.UPG.KRIW.WS.A.0012.170223T0600Z-170224T1800Z/
/O.NEW.KRIW.WS.W.0009.170223T1200Z-170224T1800Z/
Northeast Johnson County-Southeast Johnson County-
Including the cities of Buffalo and Kaycee
249 PM MST Wed Feb 22 2017

...WINTER STORM WARNING IN EFFECT FROM 5 AM THURSDAY TO 11 AM MST
FRIDAY...

The National Weather Service in Riverton has issued a Winter
Storm Warning for snow and wind, which is in effect from 5 AM
Thursday to 11 AM MST Friday. The Winter Storm Watch is no longer
in effect.

* TIMING...Snow will develop by dawn Thursday with snow heavy at
  times into Thursday evening before gradually decreasing into
  Friday morning.

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

* Wind and Visibility...North 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 become slick and snow covered. Strong
  north wind will cause blowing and drifting snow Thursday. 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.

&&

$$

WYZ028-029-231100-
/O.UPG.KRIW.WS.A.0012.170223T0600Z-170224T1800Z/
/O.NEW.KRIW.WS.W.0009.170223T0000Z-170224T1800Z/
Rock Springs and Green River-Flaming Gorge-
Including the cities of Rock Springs and Green River
249 PM MST Wed Feb 22 2017

...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO
11 AM MST FRIDAY...

The National Weather Service in Riverton has issued a Winter
Storm Warning for snow and wind, which is in effect from 5 PM
this afternoon to 11 AM MST Friday. The Winter Storm Watch is no
longer in effect.

* TIMING...Light snow is expected to increase in coverage and
  intensity by early evening. The heaviest snowfall should occur
  between the predawn hours Thursday and through Thursday evening.
  Snow will continue Thursday night, before subsiding by midday Friday.

* SNOWFALL ACCUMULATION...Ranging from 5 to 8 inches.

* Visibility and wind...North to northwest 15 to 25 mph with gusts
  to 40 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 become 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.

&&

$$

WYZ017-018-231100-
/O.UPG.KRIW.WS.A.0012.170223T0600Z-170224T1800Z/
/O.NEW.KRIW.WS.W.0009.170223T0600Z-170224T1800Z/
Wind River Basin-Lander Foothills-
Including the cities of Riverton, Shoshoni, and Lander
249 PM MST Wed Feb 22 2017

...WINTER STORM WARNING IN EFFECT FROM 11 PM THIS EVENING TO
11 AM MST FRIDAY...

The National Weather Service in Riverton has issued a Winter
Storm Warning for snow and wind, which is in effect from 11 PM
this evening to 11 AM MST Friday. The Winter Storm Watch is no
longer in effect.

* TIMING...Snow will develop Wednesday night, and become heavy at
  times from the predawn hours Thursday through Thursday evening
  before gradually tapering off into Friday morning.

* SNOWFALL ACCUMULATION...12 to 18 inches in Eastern Fremont
  County, 10 to 12 inches in the Riverton/Lander area, and 3 to 5
  inches around Kinnear and Pavillion. There is some potential for
  even higher amounts depending on the exact track of the storm
  Thursday.

* Wind and visibility...North 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.

* MAIN IMPACT...Roads will become 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 patched 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.

&&

$$

WYZ007-231100-
/O.UPG.KRIW.WS.A.0012.170223T0600Z-170224T1800Z/
/O.NEW.KRIW.WS.W.0009.170223T0600Z-170224T1800Z/
Owl Creek and Bridger Mountains-
249 PM MST Wed Feb 22 2017

...WINTER STORM WARNING IN EFFECT FROM 11 PM THIS EVENING TO
11 AM MST FRIDAY...

The National Weather Service in Riverton has issued a Winter
Storm Warning for snow and wind, which is in effect from 11 PM
this evening to 11 AM MST Friday. The Winter Storm Watch is no
longer in effect.

* TIMING...Snow will develop tonight, and may become heavy at
  times from the predawn hours Thursday through Thursday evening.
  Snow will continue through Thursday night, 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 become 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.

&&

$$

WYZ009-231100-
/O.UPG.KRIW.WS.A.0012.170223T0600Z-170224T1800Z/
/O.NEW.KRIW.WW.Y.0011.170223T1200Z-170224T1800Z/
Bighorn Mountains Southeast-
249 PM MST Wed Feb 22 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM THURSDAY TO 11 AM
MST FRIDAY...

The National Weather Service in Riverton has issued a Winter
Weather Advisory for snow and wind, which is in effect from 5 AM
Thursday to 11 AM MST Friday. The Winter Storm Watch is no longer
in effect.

* TIMING...Snow will develop by dawn Thursday and continue into
  Friday morning. The heaviest snowfall will likely occur through
  Thursday evening.

* SNOWFALL ACCUMULATION...8 to 12 inches near Powder River Pass
  and over the southern end of the mountains.

* MAIN IMPACT...Road 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.

&&

$$

WYZ005-231100-
/O.NEW.KRIW.WW.Y.0011.170223T1200Z-170224T1800Z/
Southwest Big Horn Basin-
Including the city of Thermopolis
249 PM MST Wed Feb 22 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM THURSDAY TO 11 AM
MST FRIDAY...

The National Weather Service in Riverton has issued a Winter
Weather Advisory for snow and wind, which is in effect from 5 AM
Thursday to 11 AM MST Friday.

* TIMING...Snow will develop quickly by dawn Thursday and continue
  into Friday morning. The best snowfall rates will likely be
  Thursday into Thursday evening.

* Snowfall...3 to 6 inches.

* Wind and Visibility...North 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.

* MAIN IMPACT...Road 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.

&&

$$

WYZ003-231100-
/O.NEW.KRIW.WW.Y.0011.170223T1200Z-170224T1800Z/
Cody Foothills-
Including the cities of Cody and Meeteetse
249 PM MST Wed Feb 22 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM THURSDAY TO 11 AM
MST FRIDAY...

The National Weather Service in Riverton has issued a Winter
Weather Advisory for snow and wind, which is in effect from 5 AM
Thursday to 11 AM MST Friday.

* TIMING...Snow will develop quickly by dawn Thursday and continue
  into Friday morning. The best snowfall rates will likely be
  Thursday into Thursday evening.

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

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

* MAIN IMPACT...Road 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.

&&

$$

Team Riverton


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