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

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14

000
WWUS45 KRIW 230926
WSWRIW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
226 AM MST Thu Feb 23 2017

...Heavy snow and strong wind will impact much of Central and
Southern Wyoming today through mid day Friday...

.A very strong winter storm is moving over Southern Wyoming
this morning and will stall out during the day, before slowly
winding down and shifting east of the area Thursday night. The
heaviest snow for most areas will be this morning and through
the day today. 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.

WYZ014-015-232300-
/O.CON.KRIW.BZ.W.0001.000000T0000Z-170224T1800Z/
Wind River Mountains West-Wind River Mountains East-
226 AM MST Thu Feb 23 2017

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

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

* Snowfall...10 to 15 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.

&&

$$

WYZ030-232300-
/O.CON.KRIW.BZ.W.0001.000000T0000Z-170224T1800Z/
East Sweetwater County-
Including the city of Wamsutter
226 AM MST Thu Feb 23 2017

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

* TIMING...Snow will continue across the area...becoming heavy at
  times this morning and continuing through the day today. Light
  to moderate snow will continue into Friday morning. The heaviest
  snowfall and strongest wind will occur through this evening.

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

* 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.

&&

$$

WYZ019-232300-
/O.CON.KRIW.BZ.W.0001.000000T0000Z-170224T1800Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
226 AM MST Thu Feb 23 2017

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

* TIMING...Snow will continue across the area this morning...and
  be heavy at times through this evening. Snow will continue into
  Friday morning before tapering off to flurries.

* SNOWFALL...12 to 18 inches.

* WINDS/VISIBILITY...Northeast wind 30 to 40 mph with gusts over
  50 mph causing blizzard conditions this morning 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.

&&

$$

WYZ020-022-232300-
/O.CON.KRIW.WS.W.0009.000000T0000Z-170224T1800Z/
Natrona County Lower Elevations-Casper Mountain-
Including the city of Casper
226 AM MST Thu Feb 23 2017

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

* TIMING...Snow will continue today and be heavy at times through
  this evening. Snow will continue tonight, 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 wind 20 to 30 mph with gusts
  over 45 mph in open areas causing visibilities under one quarter
  mile at times.

* MAIN IMPACT...Roads will become slick and snow covered. Gusty
  northeast winds will occur this 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.

&&

$$

WYZ010-011-232300-
/O.CON.KRIW.WS.W.0009.170223T1200Z-170224T1800Z/
Northeast Johnson County-Southeast Johnson County-
Including the cities of Buffalo and Kaycee
226 AM MST Thu Feb 23 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM EARLY THIS
MORNING TO 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 become slick and snow covered. Strong
  north wind will cause blowing and drifting snow today. 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.

&&

$$

WYZ017-018-232300-
/O.CON.KRIW.WS.W.0009.000000T0000Z-170224T1800Z/
Wind River Basin-Lander Foothills-
Including the cities of Riverton, Shoshoni, and Lander
226 AM MST Thu Feb 23 2017

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

* TIMING...Snow will continue this morning and be heavy at times
  through this 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. 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.

* 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 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.

&&

$$

WYZ028-029-232300-
/O.CON.KRIW.WS.W.0009.000000T0000Z-170224T1800Z/
Rock Springs and Green River-Flaming Gorge-
Including the cities of Rock Springs and Green River
226 AM MST Thu Feb 23 2017

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

* TIMING...Snow will continue across the area this morning, with
  the heaviest snowfall occurring through this evening. Snow will
  continue tonight, before subsiding by midday Friday.

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

* 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 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.

&&

$$

WYZ007-232300-
/O.CON.KRIW.WS.W.0009.000000T0000Z-170224T1800Z/
Owl Creek and Bridger Mountains-
226 AM 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 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.

&&

$$

WYZ009-232300-
/O.CON.KRIW.WW.Y.0011.170223T1200Z-170224T1800Z/
Bighorn Mountains Southeast-
226 AM MST Thu Feb 23 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM EARLY THIS
MORNING TO 11 AM MST FRIDAY...

* TIMING...Snow will continue over southern portions and increase
  northward through the morning hours. The heaviest snowfall will
  occur through this evening before subsiding tonight into Friday
  morning.

* 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.

&&

$$

WYZ005-232300-
/O.CON.KRIW.WW.Y.0011.170223T1200Z-170224T1800Z/
Southwest Big Horn Basin-
Including the city of Thermopolis
226 AM MST Thu Feb 23 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM EARLY THIS
MORNING TO 11 AM MST FRIDAY...

* TIMING...Snow will develop quickly by dawn today and continue
  into Friday morning. The best snowfall rates will likely be
  during the day today.

* Snowfall...3 to 6 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.

* MAIN IMPACT...Roads will 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.

&&

$$

WYZ003-232300-
/O.CON.KRIW.WW.Y.0011.170223T1200Z-170224T1800Z/
Cody Foothills-
Including the cities of Cody and Meeteetse
226 AM MST Thu Feb 23 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM EARLY THIS
MORNING TO 11 AM MST FRIDAY...

* TIMING...Snow will quickly develop by dawn today and continue
  into Friday morning. The best snowfall rates will be during the
  day today.

* 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.

* MAIN IMPACT...Roads will 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.

&&

$$



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.