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2 products issued by NWS for: Yellowstone National Park WY
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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Riverton WY
218 AM MDT Thu Apr 27 2017

WYZ001>020-022>030-281200-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Big Horn Basin-Southwest Big Horn Basin-
Southeast Big Horn Basin-Owl Creek and Bridger Mountains-
Bighorn Mountains West-Bighorn Mountains Southeast-
Northeast Johnson County-Southeast Johnson County-
Teton and Gros Ventre Mountains-Jackson Hole-
Wind River Mountains West-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-Star Valley-
Salt River and Wyoming Ranges-Upper Green River Basin Foothills-
Upper Green River Basin-South Lincoln County-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
218 AM MDT Thu Apr 27 2017

..WINTER STORM WARNINGS AND WINTER WEATHER ADVISORIES FOR MUCH OF
WESTERN AND CENTRAL WYOMING INTO FRIDAY EVENING...

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE... Today and tonight

Another spring storm will impact the area with mountain snow, and
valley rain changing to snow in most locations later today and
this evening. Significant snowfall is expected with this storm in
many locations, except for the southern and southwest sections of
western and central Wyoming. Please see winter weather products for
details.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday...

Friday...Significant snow continuing across much of northern and
central Wyoming.

.SPOTTER INFORMATION STATEMENT...

Spotters are urged to report snowfall amounts or other significant
weather.

$$




Winter Weather Advisory

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
334 PM MDT Thu Apr 27 2017

...SIGNIFICANT SNOW OVER THE WEST ENDING EARLY THIS AFTERNOON,
BUT SHIFTING TO NORTHERN AND CENTRAL WYOMING THIS AFTERNOON AND
TONIGHT, AND LASTING THROUGH FRIDAY EVENING...

.A cold spring storm will impact the Cowboy State through Friday
night with significant snowfall. The main impacts from this storm
system has shifted from western Wyoming into northern and central
Wyoming as the rain and snow changes to all snow, and becomes
heavy at times. The snow is gradually expected to taper off from
north to south Friday afternoon into Friday night.

WYZ001-002-281200-
/O.CON.KRIW.WW.Y.0026.000000T0000Z-170428T1200Z/
Yellowstone National Park-Absaroka Mountains-
Including the cities of Lake, Mammoth, and Old Faithful
334 PM MDT Thu Apr 27 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MDT
FRIDAY...

* TIMING...Snow showers will continue into tonight. The heaviest
  snow has already likely occurred earlier this morning but
  further accumulation is expected.

* TOTAL SNOW...6 to 12 inches.

* MAIN IMPACT...Highways will become slick and snow covered,
  including Chief Joseph Highway and Highways 14/16/20 west out of
  Cody. Visibility could be reduced to under one quarter mile 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.

&&

$$



U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: May 16, 2007
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