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

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WWUS45 KRIW 170405
WSWRIW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
1005 PM MDT Tue May 16 2017

...LATE SEASON WINTER STORM TO IMPACT THE NORTHERN MOUNTAINS
WEDNESDAY AND THURSDAY...

.A vigorous late season winter storm will begin to take shape
across the northern and central Rocky Mountain states tonight.
Copious amounts of moisture from the eastern Pacific will combine
with unseasonably cold temperatures to give significant areas of
snowfall across the northern mountains of Wyoming beginning early
Wednesday morning and continuing through the day on Thursday.

WYZ024-170900-
/O.NEW.KRIW.WW.Y.0027.170517T0405Z-170518T0000Z/
Salt River and Wyoming Ranges-
1005 PM MDT Tue May 16 2017

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT WEDNESDAY...

The National Weather Service in Riverton has issued a Winter
Weather Advisory for Snow, which is in effect until 6 PM MDT
Wednesday.

* TIMING...Moderate to occasionally heavy snowfall will increase
  across much of the Salt and Wyoming Mountains later tonight...
  continuing through Wednesday.

* TOTAL SNOW...4 to 12 inches.

* MAIN IMPACT...Highways may become slick, slushy and snow
  covered, including the Salt River Pass. Visibility could be
  reduced to under one quarter mile at times in heavy 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.

&&

$$

WYZ012-170900-
/O.NEW.KRIW.WW.Y.0027.170517T0405Z-170518T0000Z/
Teton and Gros Ventre Mountains-
1005 PM MDT Tue May 16 2017

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT WEDNESDAY...

The National Weather Service in Riverton has issued a Winter
Weather Advisory for snow, which is in effect until 6 PM MDT
Wednesday.

* TIMING...Moderate to occasionally heavy snowfall will increase
  across much of the Teton and Gros Ventre Mountains tonight...
  continuing through Wednesday.

* TOTAL SNOW...5 to 12 inches in the mountains...with locally
  heavier amounts in the Tetons.

* MAIN IMPACT...Highways may become slick, slushy and snow
  covered, including Teton Highway. Visibility could be reduced
  to under one quarter mile at times in heavy 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.

&&

$$

WYZ001-170900-
/O.NEW.KRIW.WW.Y.0027.170517T0405Z-170518T1200Z/
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
1005 PM MDT Tue May 16 2017

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 AM MDT THURSDAY...

The National Weather Service in Riverton has issued a Winter
Weather Advisory for snow, which is in effect until 6 AM MDT
Thursday.

* TIMING...Moderate to occasionally heavy snowfall will increase
  across much of Yellowstone area above 6500 feet tonight...
  continuing through Wednesday night.

* TOTAL SNOW...5 to 12 inches in the mountains...heaviest across
  the southern mountains in the Park.

* MAIN IMPACT...Highways may become slick, slushy and snow
  covered. Visibility could be reduced to under one quarter mile
  at times in heavy 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.

&&

$$

WYZ002-170900-
/O.CON.KRIW.WS.A.0018.170517T1200Z-170518T1800Z/
Absaroka Mountains-
1005 PM MDT Tue May 16 2017

...WINTER STORM WATCH REMAINS IN EFFECT FROM 6 AM MDT WEDNESDAY
THROUGH THURSDAY MORNING...

* TIMING...Moderate to heavy snowfall may increase rapidly
  across much of the Absaroka Mountains by early Wednesday
  morning... continuing through Thursday morning.

* TOTAL SNOW...10 to 20 inches in the mountains...heaviest
  across the northern Absarokas.

* MAIN IMPACT...Highways may become slick, slushy and snow
  covered, including Chief Joseph Highway. Visibility could be
  reduced to under one quarter mile at times in heavy snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A winter storm watch means there is a potential for significant
snow and/or blowing snow that may impact travel. Continue to
monitor the latest forecasts.

&&

$$

WYZ008-009-170900-
/O.CON.KRIW.WS.A.0018.170517T1200Z-170519T0000Z/
Bighorn Mountains West-Bighorn Mountains Southeast-
1005 PM MDT Tue May 16 2017

...WINTER STORM WATCH REMAINS IN EFFECT FROM 6 AM MDT WEDNESDAY
THROUGH THURSDAY AFTERNOON...

* TIMING...Periods of moderate to heavy snow may increase
  through the day on Wednesday...continuing through the day
  Thursday.

* Snow Accumulation...10 to 22 inches across the northern
  Bighorn Mountains...6 to 12 over the southern portion of the
  mountains.

* MAIN IMPACT...Slushy to snow packed roads will make travel
  difficult on Powder River and especially Granite Mountain
  Passes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A winter storm watch means there is a potential for significant
snow and/or blowing snow that may impact travel. Continue to
monitor the latest forecasts.

&&

$$



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