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

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WWUS45 KRIW 210330
WSWRIW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
930 PM MDT Thu Apr 20 2017

...Significant snowfall for the Northern and Central Mountains as
well as Cody Foothills tonight through Friday night...

.Another spring storm will bring significant precipitation to
areas along and east of the Divide late tonight through Friday
night. The precipitation is expected to begin as rain in the
valleys tonight, but change over to snow down to around 5000 feet
Friday morning with the quickest change over occurring in the
Cody Foothills. Significant amounts of snowfall are expected over
the Absaroka, Wind River, and Bighorn Mountains as well as the
Cody Foothills. The heaviest snowfall amounts are expected over
the Bighorn Mountains where the snow is expected to linger through
much of Friday night.

WYZ008-009-211130-
/O.CON.KRIW.WS.W.0013.170421T0600Z-170422T1200Z/
Bighorn Mountains West-Bighorn Mountains Southeast-
930 PM MDT Thu Apr 20 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT
SATURDAY...

* TIMING...Snow will develop between midnight and 6 AM Friday.
  Periods of snow, heavy at times, will then continue through
  Friday night.

* TOTAL SNOW ACCUMULATION...8 to 14 inches with higher amounts
  above 9000 feet.

* MAIN IMPACT...Powder River and Granite mountain passes will become
  slick and snow packed. Visibility will be under a quarter mile
  in heavier snow, which could be very disorientating for those
  recreating in the back country.

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.

&&

$$

WYZ015-211130-
/O.CON.KRIW.WW.Y.0024.000000T0000Z-170422T0600Z/
Wind River Mountains East-
930 PM MDT Thu Apr 20 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT
FRIDAY NIGHT...

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

* TOTAL SNOW ACCUMULATION...6 to 12 inches possible with locally
  higher amounts.

* MAIN IMPACT...South Pass may become slick and snow packed,
  including South Pass. Visibility may lower to around 1/2 of a
  mile in heavier 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.

&&

$$

WYZ002-211130-
/O.CON.KRIW.WW.Y.0024.000000T0000Z-170422T0600Z/
Absaroka Mountains-
930 PM MDT Thu Apr 20 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT
FRIDAY NIGHT...

* TIMING...Periods of snow, heavy a times, will continue through
  Friday evening.

* TOTAL SNOW ACCUMULATION...6 to 12 inches with local amounts up
  to 16 inches possible.

* MAIN IMPACT...Highways will become slick and snow covered,
  including Chief Joseph Highway, and the highway between Pahaska
  and Cody. Visibility will be under a quarter mile in heavier
  snow, which could be very disorientating for those recreating in
  the back country.

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.

&&

$$

WYZ007-211130-
/O.CON.KRIW.WW.Y.0024.000000T0000Z-170422T0600Z/
Owl Creek and Bridger Mountains-
930 PM MDT Thu Apr 20 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT MDT
FRIDAY NIGHT...

* TIMING...Periods of snow, heavy at times, will impact the Owl
  Creek and Bridger Mountains through Friday evening.

* TOTAL SNOW ACCUMULATION...6 to 12 inches possible with locally
  higher amounts of up to 15 inches over the highest ridges.

* MAIN IMPACT...Area highways may become muddy, slick and snow
  packed, including Nowood Road connecting the towns of Lysite,
  Lost Cabin, and Big Trails. Visibility will be under a quarter
  mile in heavier snow, which could be very disorientating for
  those recreating in the back country.

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.

&&

$$

WYZ003-211130-
/O.CON.KRIW.WW.Y.0024.170421T0900Z-170422T0600Z/
Cody Foothills-
Including the cities of Cody and Meeteetse
930 PM MDT Thu Apr 20 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 AM FRIDAY TO
MIDNIGHT MDT FRIDAY NIGHT...

* TIMING...Rain developing over the Cody Foothills is expected to
  change over to snow in most areas between 3 AM and 8 AM.

* TOTAL SNOW ACCUMULATION...2 to 6 inches with local amounts up to
  8 inches possible. The highest amounts are expected to occur
  between Cody and Meeteetse.

* MAIN IMPACT...Highway 120 will likely become slick and hazardous
  at times especially during heavier bursts of heavy 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.

&&

$$

Team Riverton/21



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