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2 products issued by NWS for: Yellowstone National Park WY
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Winter Weather Advisory

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
1255 AM MST Fri Jan 19 2018

...Snow returns to the northwest today and then to Central
Wyoming late tonight through Saturday night...

.A storm system will spread snow into Northwest Wyoming late
tonight through Friday. Snow will develop across Central Wyoming
late Friday night and continue through Saturday night. Significant
snowfall is expected across portions of these areas the next
couple days.

WYZ001-192300-
/O.CON.KRIW.WW.Y.0003.000000T0000Z-180120T0000Z/
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
1255 AM MST Fri Jan 19 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

* WHAT...Snow and patchy blowing snow expected today. Total snow
  accumulations of 2 to 3 inches around Mammoth with 6 to 8 inches
  around the south entrance. The mountains can expect 5 to 10
  inches with the heaviest in the southwest mountains.

* WHERE...Yellowstone National Park.

* WHEN...11 PM today to 5 PM Friday.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph will
  cause areas of blowing and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means periods
of snow and blowing snow will cause primarily travel
difficulties. Be prepared for snow covered roads and limited
visibilities, and use caution while driving. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.

$$



Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Riverton WY
1217 PM MST Thu Jan 18 2018

WYZ001>020-022>030-191200-
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-
1217 PM MST Thu Jan 18 2018

...Winter Weather Advisory Northwest Mountains late Tonight
through Friday Afternoon...
...Winter Storm Watch parts of Central Wyoming late Friday Night
through Saturday Night...

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE...Today and tonight

High winds possible for portions of the Cody Foothills, mainly in
the vicinity of Clark through midday.

Strong winds are likely Jeffrey City and Casper from this
afternoon into tonight.

Snow will spread into the northwestern mountains after midnight
tonight.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Friday morning...Strong to possibly high winds between Jeffrey
City and Casper.

Friday through Saturday...Snow continuing in the west, tapering
off Friday night. Snow will spread East of the Divide and into the
I-80 corridor Friday night and continue into Saturday before
ending Saturday night. Significant snowfall could occur late
Friday night through Saturday night across Natrona, southeast
Fremont and all of Sweetwater County.

.SPOTTER INFORMATION STATEMENT...

Spotters are urged to report snowfall amounts and wind gusts past
50 mph.

$$

Team Riverton




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