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

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WWUS45 KRIW 161932
WSWRIW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
132 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.

WYZ002-171200-
/O.CON.KRIW.WS.A.0018.170517T1200Z-170518T1800Z/
Absaroka Mountains-
132 PM MDT Tue May 16 2017

...WINTER STORM WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING
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.

&&

$$

WYZ008-009-171200-
/O.CON.KRIW.WS.A.0018.170517T1200Z-170519T0000Z/
Bighorn Mountains West-Bighorn Mountains Southeast-
132 PM MDT Tue May 16 2017

...WINTER STORM WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING
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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