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

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
000
WWUS45 KRIW 202046
WSWRIW

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

...Another significant snowfall event slated for much of the
Northern and Central Mountains for tonight through Friday night...

.The combination of a strong upper Pacific trough modest lee side
cyclogenesis will produce significant amounts of snowfall over
portions of the Absaroka, Wind River, and Big Horn Mountains from
tonight through Friday night.

WYZ008-009-211000-
/O.CON.KRIW.WS.W.0013.170421T0600Z-170422T1200Z/
Bighorn Mountains West-Bighorn Mountains Southeast-
246 PM MDT Thu Apr 20 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 6 AM MDT SATURDAY...

* TIMING...Snow showers will generally begin after midnight
  tonight with the snow levels starting out above 8500 feet.
  After midnight tonight, the snow levels should lower to around
  7500 feet by sun up then down to 6500 feet through Friday
  morning. Heaviest snowfall expected between midnight tonight
  and midnight Friday.

* TOTAL SNOW ACCUMULATION...4 to 8 inches between 6500 feet and
  7500 feet...8 to 14 inches from 7500 feet to 9000 feet...and
  14 to 18 inches above 9000 feet.

* MAIN IMPACT...Highways may become slick and snow packed
  including Highway 16 over Powder River Pass and Highway 14
  over Granite Pass. Visibility may lower to around 1/4 of a
  mile in heavier snowfall.

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.

&&

$$

WYZ007-211000-
/O.EXA.KRIW.WW.Y.0024.170421T0000Z-170422T0600Z/
Owl Creek and Bridger Mountains-
246 PM MDT Thu Apr 20 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO
MIDNIGHT MDT FRIDAY NIGHT...

The National Weather Service in Riverton has issued a Winter
Weather Advisory for the Owl Creek Mountains, which is in effect
from 6 PM this evening to midnight MDT Friday night.

* TIMING...Snow showers will begin late this afternoon with the
  snow levels starting out above 8500 feet. After midnight
  tonight, the snow levels will lower to around 7000 feet, then
  down to 5500 feet through Friday morning.

* 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. The visibility may lower to around
  1/4 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.

&&

$$

WYZ015-211000-
/O.CON.KRIW.WW.Y.0024.170421T0000Z-170422T0600Z/
Wind River Mountains East-
246 PM MDT Thu Apr 20 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS
EVENING TO MIDNIGHT MDT FRIDAY NIGHT...

* TIMING...Snow showers will begin late this afternoon with the
  snow levels starting out above 8500 feet. After midnight
  tonight, the snow levels will lower to around 7500 feet, then
  down to 6500 feet through Friday morning.

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

* MAIN IMPACT...Highways may become slick and snow packed,
  including South Pass and Togwotee Pass. Visibility may lower
  to around 1/4 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.

&&

$$

WYZ002-211000-
/O.CON.KRIW.WW.Y.0024.170421T0000Z-170422T0600Z/
Absaroka Mountains-
246 PM MDT Thu Apr 20 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS
EVENING TO MIDNIGHT MDT FRIDAY NIGHT...

* TIMING...Snow showers will begin this evening with the snow
  levels starting out above 9000 feet. After midnight tonight, the
  snow levels will lower to around 7000 fee...then on down to
  5500 feet through Friday morning.

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

* MAIN IMPACT...Highways may become slick and snow packed
  including Highway 14 16 20 west out of Cody as well as the
  Chief Joseph Highway or Highway 296. Visibility may lower to
  around 1/4 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.

&&

$$

WYZ003-211000-
/O.CON.KRIW.WW.Y.0024.170421T0900Z-170422T0600Z/
Cody Foothills-
Including the cities of Cody and Meeteetse
246 PM MDT Thu Apr 20 2017

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

* TIMING...Rain showers will begin after 10 pm this evening,
  turning to snow by 3 am Friday morning over the hilly terrain
  surrounding Cody, and then turning to snow in Cody by 5 am. Snow
  becoming moderate to heavy by sun up Friday morning.

* TOTAL SNOW ACCUMULATION...2 to 6 inches with local amounts up
  to 8 inches possible.

* MAIN IMPACT...Area highways may become slushy or snow packed
  including Highways 14 16 and 20 west out of Cody. 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.

&&

$$

TEAM RIVERTON



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.