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Winter Storm Warning


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

...Spring snowstorm taking shape east of the continental divide
tonight and Friday...

.A cold spring storm will impact mainly the central and eastern
part of the Cowboy State through Friday night with significant
snowfall in some locations. Any rain will change to snow tonight.
Then snow is gradually expected to taper off from north to south
Friday afternoon into Friday night.

WYZ015-281100-
/O.CON.KRIW.WS.W.0015.000000T0000Z-170429T0600Z/
Wind River Mountains East-
734 PM MDT Thu Apr 27 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
FRIDAY NIGHT...

* TIMING...Periods of snow through Friday evening. Expect moderate
  to heavy snow at times.

* Snow Accumulation...8 to 15 inches.

* MAIN IMPACT...Slushy to snow packed roads will make travel
  difficult, including over South Pass.

* OTHER IMPACTS...Heavy snow will reduce visibility below a
  quarter mile at times.

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.

&&

$$

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

...Spring snowstorm taking shape east of the continental divide
tonight and Friday...

.A cold spring storm will impact mainly the central and eastern
part of the Cowboy State through Friday night with significant
snowfall in some locations. Any rain will change to snow tonight.
Then snow is gradually expected to taper off from north to south
Friday afternoon into Friday night.

WYZ009-281100-
/O.CON.KRIW.WS.W.0015.000000T0000Z-170429T0600Z/
Bighorn Mountains Southeast-
734 PM MDT Thu Apr 27 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
FRIDAY NIGHT...

* TIMING...Periods of snow will occur through Friday evening.
  Expect moderate to heavy snow at times.

* SNOW ACCUMULATION...12 to 18 inches.

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

* OTHER IMPACTS...Heavy snow will reduce visibility below a
  quarter mile at times.

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.

&&

$$

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

...Spring snowstorm taking shape east of the continental divide
tonight and Friday...

.A cold spring storm will impact mainly the central and eastern
part of the Cowboy State through Friday night with significant
snowfall in some locations. Any rain will change to snow tonight.
Then snow is gradually expected to taper off from north to south
Friday afternoon into Friday night.

WYZ010-011-281100-
/O.CON.KRIW.WS.W.0015.000000T0000Z-170429T0600Z/
Northeast Johnson County-Southeast Johnson County-
Including the cities of Buffalo and Kaycee
734 PM MDT Thu Apr 27 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
FRIDAY NIGHT...

* TIMING...Periods of snow through Friday evening. Snow will be
  moderate to heavy at times.

* SNOW ACCUMULATION...6 to 10 inches, locally higher amounts in
  the foothills of the Bighorn mountains.

* MAIN IMPACT...Roads are expected to become slushy to snow
  covered tonight. Travel could become difficult at times
  especially late tonight and Friday morning.

* OTHER IMPACTS...Heavy snow will reduce visibility below a
  quarter mile at times.

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.

&&

$$

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

...Spring snowstorm taking shape east of the continental divide
tonight and Friday...

.A cold spring storm will impact mainly the central and eastern
part of the Cowboy State through Friday night with significant
snowfall in some locations. Any rain will change to snow tonight.
Then snow is gradually expected to taper off from north to south
Friday afternoon into Friday night.

WYZ020-281100-
/O.CON.KRIW.WS.W.0015.000000T0000Z-170429T0600Z/
Natrona County Lower Elevations-
Including the city of Casper
734 PM MDT Thu Apr 27 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
FRIDAY NIGHT...

* TIMING...A mix of rain and snow will change to all snow by
  midnight. Then periods of snow will continue into Friday
  evening.

* SNOW ACCUMULATION...5 to 10 inches, with the highest amounts in
  northern and western Natrona County with lesser amounts toward
  Casper.

* MAIN IMPACT...Roads will likely become slushy to snow covered
  later tonight, and remain slick at times through Friday night.
  The worst driving conditions should occur Friday morning, with
  some improvement in road conditions by midday Friday.

* OTHER IMPACTS...Heavy snow will reduce visibility below a
  quarter mile at times.

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.

&&

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service GRAND JUNCTION CO
555 PM MDT Thu Apr 27 2017

COZ004-013-280600-
/O.CON.KGJT.WS.W.0011.000000T0000Z-170428T0600Z/
Elkhead and Park Mountains-Flat Tops-
555 PM MDT Thu Apr 27 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

* LOCATIONS INCLUDE...Columbine, Hahns Peak, Toponas, Buford,
  and Trappers Lake.

* TIMING...Snow showers will continue through midnight.

* SNOW ACCUMULATION...An additional 1-3 inches bringing storm
  totals to 8 to 14 inches.

* WINDS...West 10 to 20 mph with gusts up to 30 mph.

* VISIBILITY...Reduced to less than 1/2 mile at times in
  moderate to heavy snow showers.

* IMPACTS...Winter weather driving conditions are expected,
  especially over higher mountain passes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow are
expected or occurring. Strong winds and blowing snow are also
possible. This will make travel very hazardous or impossible.

&&

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Billings MT
325 PM MDT Thu Apr 27 2017

MTZ038-282130-
/O.CON.KBYZ.WS.W.0008.000000T0000Z-170429T0600Z/
Southern Big Horn-
325 PM MDT Thu Apr 27 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
FRIDAY NIGHT...

* IMPACTS...Heavy, wet snow will cause difficult travel conditions
  due to poor visibility and snow packed or slushy roads. This
  includes Interstate 90. Power outages are possible.

* TIMING...Areas of rain and snow will become mostly snow
  overnight. Snow will continue through Friday afternoon before
  tapering off by Friday evening.

* SNOW ACCUMULATION...The heaviest snowfall accumulations are
  expected in the foothills of the Big Horns and Pryors, and over
  higher hills south of Lodge Grass. Snow totals over these
  locations will be 4 to 8 inches. Lighter snow totals can be
  expected elsewhere, mainly over grassy areas.

Precautionary/preparedness actions...

A Winter Storm Warning means a significant amount of snow is
expected or occurring. Reduced visibility in areas of snow and fog
on slick or slushy roadways will make travel very hazardous.

&&

$$

http://weather.gov/billings

URGENT - WINTER WEATHER MESSAGE
National Weather Service Billings MT
325 PM MDT Thu Apr 27 2017

WYZ099-282130-
/O.CON.KBYZ.WS.W.0008.000000T0000Z-170429T0600Z/
Sheridan Foothills-
325 PM MDT Thu Apr 27 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
FRIDAY NIGHT...

* IMPACTS...Heavy, wet snow will cause difficult travel conditions
  due to poor visibility and snow packed or slushy roads. This
  includes Interstate 90 and Highway 14. Power outages are
  possible.

* TIMING...Snow will continue overnight, heavy at times. Snow will
  continue through Friday afternoon before tapering off by Friday
  evening. Snowfall accumulation is expected to be greatest
  tonight through Friday morning.

* SNOW ACCUMULATION...6 to 10 inches for the foothills and areas
  west of Interstate 90, with 4 to 6 inches for eastern sections,
  including the city of Sheridan.

Precautionary/preparedness actions...

A Winter Storm Warning means a significant amount of snow is
expected or occurring. Visibility will be quite poor at times
making travel very hazardous.

&&

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Billings MT
325 PM MDT Thu Apr 27 2017

WYZ098-282130-
/O.CON.KBYZ.WS.W.0008.000000T0000Z-170429T0600Z/
Northeast Bighorn Mountains-
325 PM MDT Thu Apr 27 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
FRIDAY NIGHT...

* IMPACTS...Heavy, wet snow will cause difficult travel
  conditions due to poor visibility and snow packed roads. This
  includes Highway 14 through Burgess Junction. Power outages
  are possible.

* TIMING...Snow will continue through Friday. The snow will be
  heavy at times. Snow will taper off late Friday afternoon and
  evening.

* SNOW ACCUMULATION...10 to 15 inches with higher amounts
  possible.

Precautionary/preparedness actions...

Those traveling or with outdoor recreation plans should be
prepared for winter conditions and difficult travel.

&&

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Rapid City SD
303 PM MDT Thu Apr 27 2017

...Winter weather to return to parts of northeastern Wyoming and
southwestern South Dakota tonight into Friday...

.Another spring storm system will move through portions of the
northern and central high plains tonight and Friday. Low pressure
will strengthen across the Northern Rockies late today and shift
into eastern Wyoming tonight. Rain and areas of snow will continue
to develop through the early evening hours across northeast
Wyoming and southwest South Dakota, then transition to all snow
overnight. Snow will continue into Friday morning, then diminish
Friday afternoon as the low pressure system slides southeast of
the area. The heaviest snow is expected to fall across southern
Campbell County, where 5 to 10 inches of snow is expected by
Friday afternoon.

WYZ055-281215-
/O.CON.KUNR.WS.W.0007.170428T0000Z-170429T0000Z/
Southern Campbell-
Including the city of Wright
303 PM MDT Thu Apr 27 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING
TO 6 PM MDT FRIDAY...

* TIMING...Rain and snow will continue to develop late today,
  becoming all snow this evening. Snow, moderate to heavy at
  times, will continue through most of the day on Friday.

* MAIN IMPACT...Snowfall totals of 5 to 9 inches are expected,
  with locally higher amounts possible mainly south and west of
  Wright.

* OTHER IMPACTS...Visibilities will be reduced to less than a
  quarter mile in the heavier snow. With many trees beginning to
  leaf out, the heavy wet snow could bring down some tree limbs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A winter storm warning for heavy snow means snow accumulations
will create dangerous conditions.

&&

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
211 PM MDT Thu Apr 27 2017

...A Potent Spring Storm will Bring Widespread Moderate to Heavy
Snow to Portions of Southeast Wyoming and the Northern Nebraska
Panhandle This Afternoon through Friday Evening...

WYZ112-114-281200-
/O.CON.KCYS.WS.W.0012.000000T0000Z-170429T0600Z/
Sierra Madre Range-Snowy Range-
Including the cities of Centennial and Albany
211 PM MDT Thu Apr 27 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
FRIDAY NIGHT...

* TIMING...Moderate snow will continue this afternoon, with a
  decrease in intensity early this evening. Moderate to heavy snow
  will return by midnight tonight and continue periodically through
  Friday evening.

* TOTAL SNOW ACCUMULATIONS...8 to 16 inches.

* WINDS/VISIBILITY...West winds 20 to 25 mph with gusts to 35 mph
  this afternoon. Winds diminish tonight and become north 10 to 20
  mph Friday. Visibilities will be reduced to one half mile or less
  at times in snow and blowing snow.

* IMPACTS...Travel will be extremely hazardous due to snow covered
  roads and low visibilities. Those planning outdoor recreation in
  the Snowy and Sierra Madre mountains should be prepared for heavy
  snow and low visibilities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for heavy snow means severe winter weather
conditions are expected or occurring. Significant amounts of snow
are forecast that will make travel dangerous. Only travel in an
emergency. If you must travel...keep an extra flashlight...food...and
water in your vehicle in case of an emergency.

&&

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
211 PM MDT Thu Apr 27 2017

...A Potent Spring Storm will Bring Widespread Moderate to Heavy
Snow to Portions of Southeast Wyoming and the Northern Nebraska
Panhandle This Afternoon through Friday Evening...

WYZ103>105-281200-
/O.CON.KCYS.WS.W.0012.170428T0000Z-170429T0600Z/
North Laramie Range-Ferris/Seminoe/Shirley Mountains-
Shirley Basin-
Including the cities of Garrett, Seminoe Dam, Medicine Bow,
and Shirley Basin
211 PM MDT Thu Apr 27 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING
TO MIDNIGHT MDT FRIDAY NIGHT...

* TIMING...Moderate to heavy snow will develop this evening and
  will continue at times through Friday evening.

* TOTAL SNOW ACCUMULATIONS...4 to 8 inches below 7500 feet in
  northern Carbon and Albany Counties and the northern Laramie
  Range, with 8 to 14 inches above 7500 feet.

* WINDS/VISIBILITY...West to northwest 15 to 25 mph, diminishing
  tonight and becoming north to northeast 15 to 25 mph with higher
  gusts Friday. Visibilities will be reduced to one half mile or
  less at times in snow and blowing snow.

* IMPACTS...Travel will be extremely hazardous due to snow covered
  roads and low visibilities. Heavy snow on fully leafed trees
  could cause tree damage, with the possibility of tree branches
  falling onto power lines and causing power outages.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for heavy snow means severe winter weather
conditions are expected or occurring. Significant amounts of snow
are forecast that will make travel dangerous. Only travel in an
emergency. If you must travel...keep an extra flashlight...food...and
water in your vehicle in case of an emergency.

&&

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
211 PM MDT Thu Apr 27 2017

...A Potent Spring Storm will Bring Widespread Moderate to Heavy
Snow to Portions of Southeast Wyoming and the Northern Nebraska
Panhandle This Afternoon through Friday Evening...

NEZ095-WYZ101-102-281200-
/O.CON.KCYS.WS.W.0012.170428T0000Z-170429T0000Z/
North Sioux-Converse County Lower Elevations-Niobrara County-
Including the cities of Harrison, Bill, Douglas, Deer Creek,
Glenrock, Lusk, and Redbird
211 PM MDT Thu Apr 27 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING
TO 6 PM MDT FRIDAY...

* TIMING...Rain will change to snow early this evening, with
  moderate to heavy snow at times through Friday afternoon.

* TOTAL SNOW ACCUMULATIONS...4 to 10 inches, heaviest along
  ridges.

* WINDS/VISIBILITY..East to northeast winds 10 to 20 mph with
  higher gusts. Visibilities will be reduced to a half mile or
  less at times in snow and blowing snow.

* IMPACTS...Travel will be extremely hazardous due to snow covered
  roads and low visibilities. Heavy snow on fully leafed trees
  could cause tree damage, with the possibility of tree branches
  falling onto power lines and causing power outages.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for heavy snow means severe winter weather
conditions are expected or occurring. Significant amounts of snow
are forecast that will make travel dangerous. Only travel in an
emergency. If you must travel...keep an extra flashlight...food...and
water in your vehicle in case of an emergency.

&&

$$

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: June 2, 2009
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE