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

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WWUS45 KRIW 240409
WSWRIW

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

...Snow and wind will gradually diminish overnight through Friday
morning...

.A low pressure system will continue to move east of the area
across the Central Plains tonight and Friday morning. The heaviest
snowfall will continue to shift east of the area tonight with
this system, and winds will continue to gradually diminish.
However, many roads will remain treacherous across central and
southern Wyoming through Friday morning, with many roads remaining
closed across southern Wyoming late Thursday evening. Light to
moderate snowfall and areas of gusty north to northeast wind will
continue to cause areas of blowing snow and limited visibility
tonight.

WYZ014-015-241215-
/O.CAN.KRIW.BZ.W.0001.000000T0000Z-170224T1800Z/
/O.EXA.KRIW.WS.W.0009.000000T0000Z-170224T1800Z/
Wind River Mountains West-Wind River Mountains East-
909 PM MST Thu Feb 23 2017

...WINTER STORM WARNING IN EFFECT UNTIL 11 AM MST FRIDAY...
...BLIZZARD WARNING IS CANCELLED...

The National Weather Service in Riverton has issued a Winter
Storm Warning for snow and blowing snow, which is in effect until
11 AM MST Friday. The Blizzard Warning has been cancelled.

* Timing...Light to moderate snow with areas of gusty northeast
  wind will continue overnight before gradually tapering off
  Friday morning.

* Snowfall...20 to 30 inches have fallen so far along the east
  slopes. An additional 3 to 6 inches is expected through midday
  Friday with the heavier amounts across the southern portion of
  the range.

* Wind and Visibility...Northeast 15 to 25 mph with visibility
  limited to one-half mile or less at times in blowing snow.

* Main impact...Many roads will remain impassable due to the heavy
  snowfall and significant drifting on Thursday. South Pass is
  expected to remain closed overnight.

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.

&&

$$

WYZ030-241215-
/O.CAN.KRIW.BZ.W.0001.000000T0000Z-170224T1800Z/
/O.EXA.KRIW.WS.W.0009.000000T0000Z-170224T1800Z/
East Sweetwater County-
Including the city of Wamsutter
909 PM MST Thu Feb 23 2017

...WINTER STORM WARNING IN EFFECT UNTIL 11 AM MST FRIDAY...
...BLIZZARD WARNING IS CANCELLED...

The National Weather Service in Riverton has issued a Winter
Storm Warning for Snow and Blowing Snow, which is in effect until
11 AM MST Friday. The Blizzard Warning has been cancelled.

* TIMING...Light to moderate snow with areas of gusty northeast
  wind will continue overnight before gradually tapering off
  Friday morning.

* SNOWFALL...6 inches has fallen in the Wamsutter area with 12 to
  18 inches reported in the Rock Springs area. Expect an
  additional 1 to 3 inches of snowfall overnight through midday Friday.

* Wind and Visibility...Northeast 15 to 25 mph with visibility
  limited to one-half mile or less at times in blowing snow.

* Main impact...Many roads across the area, including Interstate
  80, remain closed late Thursday evening. Travel will remain
  treacherous due to significant snowfall and drifting that
  occurred on Thursday.

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.

&&

$$

WYZ019-241215-
/O.CAN.KRIW.BZ.W.0001.000000T0000Z-170224T1800Z/
/O.EXA.KRIW.WS.W.0009.000000T0000Z-170224T1800Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
909 PM MST Thu Feb 23 2017

...WINTER STORM WARNING IN EFFECT UNTIL 11 AM MST FRIDAY...
...BLIZZARD WARNING IS CANCELLED...

The National Weather Service in Riverton has issued a Winter
Storm Warning for Snow and Blowing Snow, which is in effect until
11 AM MST Friday. The Blizzard Warning has been cancelled.

* TIMING...Light to moderate snow with areas of gusty northeast
  wind will continue overnight before gradually tapering off
  Friday morning.

* SNOWFALL...6 inches has fallen in Jeffrey City. Expect an
  additional 1 to 3 inches of snowfall overnight through midday
  Friday across the area.

* Wind and Visibility...East to northeast 10 to 20 mph with
  visibility limited to one mile or less at times in blowing snow.

* Main impact...Many roads across the area, including U.S. Highway
  287 and State Highway 220 remain closed late Thursday evening.
  Travel will remain treacherous due to significant snowfall and
  drifting that occurred on Thursday.

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.

&&

$$

WYZ020-022-241215-
/O.CON.KRIW.WS.W.0009.000000T0000Z-170224T1800Z/
Natrona County Lower Elevations-Casper Mountain-
Including the city of Casper
909 PM MST Thu Feb 23 2017

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

* TIMING...Light to occasionally moderate snow will continue
  overnight, tapering off Friday morning.

* SNOWFALL ACCUMULATION...10 to 15 inches of snow has fallen in
  the Casper area with 12 to 18 inches on Casper Mountain. An
  additional 1 to 3 inches is expected across the lower elevations
  overnight through Friday morning with 3 to 5 additional inches
  of snowfall on Casper Mountain.

* Wind and Visibility...East to northeast wind 10 to 20 mph with
  visibility one mile or less at times in snow and blowing snow.

* MAIN IMPACT...Roads will be slick and snow covered. Some roads
  may be impassable, especially in rural areas, due to significant
  snowfall and drifting that occurred on Thursday.

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.

&&

$$

WYZ010-011-241215-
/O.CON.KRIW.WS.W.0009.000000T0000Z-170224T1800Z/
Northeast Johnson County-Southeast Johnson County-
Including the cities of Buffalo and Kaycee
909 PM MST Thu Feb 23 2017

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

* TIMING...Periods of light snow will continue tonight before
  tapering off Friday morning.

* SNOWFALL ACCUMULATION...Around 3 inches of snow has accumulated
  in the Buffalo area. An additional 1 to 3 inches of snow is
  expected overnight with locally heavier amounts from Kaycee and
  Sussex southward.

* MAIN IMPACT...Roads will be slick and snow covered with limited
  visibility 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.

&&

$$

WYZ017-018-241215-
/O.CON.KRIW.WS.W.0009.000000T0000Z-170224T1800Z/
Wind River Basin-Lander Foothills-
Including the cities of Riverton, Shoshoni, and Lander
909 PM MST Thu Feb 23 2017

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

* TIMING...Light to occasionally moderate snow will continue
  overnight, tapering off Friday morning.

* SNOWFALL ACCUMULATION...10 to 13 inches of snow has fallen from
  Riverton to Lander with lighter amounts in the northwest portion
  of the basin. An additional 1 to 3 inches is expected overnight
  through Friday morning.

* Wind and Visibility...East to northeast wind 10 to 20 mph with
  visibility one mile or less at times in snow and blowing snow.

* MAIN IMPACT...Roads will be slick and snow covered. Some roads
  may be impassable, especially in rural areas, due to significant
  snowfall and drifting that occurred on Thursday. Most highways
  remained closed across the southern portion of the basin late
  Thursday evening.

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.

&&

$$

WYZ028-029-241215-
/O.CON.KRIW.WS.W.0009.000000T0000Z-170224T1800Z/
Rock Springs and Green River-Flaming Gorge-
Including the cities of Rock Springs and Green River
909 PM MST Thu Feb 23 2017

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

* TIMING...Light to occasionally moderate snow will continue
  overnight before tapering off Friday morning.

* SNOWFALL ACCUMULATION...12 to 18 inches have fallen so far in
  the Rock Springs and Green River areas. An additional 1 to 3
  inches of snow is expected overnight through Friday morning.

* Visibility and wind...North to northwest wind 15 to 20 mph will
  cause areas of blowing snow and visibility limited to one-half
  mile or less at times tonight.

* Main impact...Many roads across the area, including portions
  Interstate 80, remain closed late Thursday evening. Travel will
  remain treacherous due to significant snowfall and drifting that
  occurred on Thursday.

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.

&&

$$

WYZ007-241215-
/O.CON.KRIW.WS.W.0009.000000T0000Z-170224T1800Z/
Owl Creek and Bridger Mountains-
909 PM MST Thu Feb 23 2017

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

* TIMING...Light to occasionally moderate snow will continue
  overnight, tapering off Friday morning.

* SNOWFALL ACCUMULATION...An additional 1 to 4 inches is expected
  overnight through Friday morning.

* Wind and Visibility...North to northeast wind 10 to 20 mph with
  visibility one mile or less at times in snow and blowing snow.

* MAIN IMPACT...Roads will be slick and snow covered. Some roads
  may be impassable, especially in rural areas, due to significant
  snowfall and drifting that occurred on Thursday.

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.

&&

$$

WYZ009-241215-
/O.CON.KRIW.WW.Y.0011.000000T0000Z-170224T1800Z/
Bighorn Mountains Southeast-
909 PM MST Thu Feb 23 2017

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

* TIMING...Light to occasionally moderate snow will continue this
  evening, before tapering off Friday morning.

* SNOWFALL ACCUMULATION...1 to 3 inches have fallen so far. An
  additional 1 to 4 inches of snow is expected tonight through
  Friday morning.

* MAIN IMPACT...Roads will may be slick and snow covered with
  limited visibility in snow and 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.

&&

$$

WYZ005-241215-
/O.CON.KRIW.WW.Y.0011.000000T0000Z-170224T1800Z/
Southwest Big Horn Basin-
Including the city of Thermopolis
909 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...4 to 7 inches have fallen from Thermopolis and
  southward so far. An additional 1 to 2 inches of snow is
  expected overnight through Friday morning.

* MAIN IMPACT...Roads will be slick and snow covered with limited
  visibility in snowfall.

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.

&&

$$

WYZ003-241215-
/O.CON.KRIW.WW.Y.0011.000000T0000Z-170224T1800Z/
Cody Foothills-
Including the cities of Cody and Meeteetse
909 PM MST Thu Feb 23 2017

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

* TIMING...Light to occasionally moderate snow will continue
  overnight before tapering off Friday morning.

* Snowfall...Snowfall amounts so far have ranged from around an
  inch in Cody to 5 inches in Meeteetse. Expect an additional 1
to 2 inches of snowfall overnight through Friday morning.

* MAIN IMPACT...Roads will be slick and snow covered with limited
  visibility in snowfall 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.

&&

$$


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