Alert archive / Nebraska / Winter Storm Warnings in 2018

Winter Storm Warning 21, NWS Cheyenne, WY

November 30, 2018Box Butte County, Dawes County, Sioux County, Nebraska; Niobrara County, Wyoming

NWS Cheyenne, WY issued this winter storm warning at Nov 30, 2018, 2:32 AM MST for Box Butte County, Dawes County, Sioux County, Nebraska; Niobrara County, Wyoming. It took effect at Nov 30, 2018, 11:00 PM MST. It was in force for 36 hr. 20 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Nov 30, 2018, 2:32 AM MST (09:32 UTC)
In effect from
Nov 30, 2018, 11:00 PM MST
Expired
Dec 2, 2018, 10:45 AM MST
In force
36 hr
Issued by
NWS Cheyenne, WY

Counties Box Butte County, NE, Dawes County, NE, Sioux County, NE, Niobrara County, WY

What was reported inside it

TimeReportWhereRemark
Dec 1, 7:00 AM MSTSNOW 0.53 Wsw Chadron State Par, NECOCORAHS STATION DAWE026, 3 W CHADRON STATE PARK.
Dec 1, 7:00 AM MSTSNOW 0.82 Se Chadron State Park, NECOCORAHS STATION NE-DS-1, 1 SE CHADRON STATE PARK.
Dec 1, 7:00 AM MSTSNOW 110 S Keeline, WYCOCORAHS STATION WY-NB-9, 9 S KEELINE.
Dec 1, 7:00 AM MSTSNOW 19 Wsw Harrison, NECO-OP OBSERVER STATION HRNN1, HARRISON.
Dec 1, 7:00 AM MSTSNOW 29 Ne Harrison, NE24 HOUR SNOWFALL. SNOW DEPTH 2 INCHES. WATER CONTENT 0.07 INCHES.
Dec 1, 7:00 AM MSTSNOW 29 Nne Harrison, NECO-OP OBSERVER STATION ZIMN1, HARRISON 9NE.
Dec 1, 6:00 PM MSTSNOW 817 Se Agate, NECO-OP OBSERVER STATION PVRN1, PLAINSVIEW RANCH.
Dec 1, 6:00 PM MSTHEAVY SNOW 817 Se Agate, NECORRECTS PREVIOUS SNOW REPORT FROM 17 SE AGATE. CO-OP OBSERVER STATION PVRN1, PLAINSVIEW RANCH.
Dec 2, 6:45 AM MSTSNOW 2.513 W Lance Creek, WYREPORT RECEIVED VIA FACEBOOK.
Dec 2, 7:00 AM MSTSNOW 0.510 S Keeline, WYCOCORAHS STATION WY-NB-9, 9 S KEELINE.
Dec 2, 7:00 AM MSTSNOW 22 Ese Berea, NECOCORAHS STATION BOX_001, 2 ESE BEREA.
Dec 2, 7:00 AM MSTSNOW 2.75 E Box Butte Dam, NECOCORAHS STATION DAWE015, 4 E BOX BUTTE DAM.
Dec 2, 7:00 AM MSTSNOW 39 Nne Harrison, NECO-OP OBSERVER STATION ZIMN1, HARRISON 9NE.
Dec 2, 7:00 AM MSTSNOW 4.59 Wsw Harrison, NECO-OP OBSERVER STATION HRNN1, HARRISON.
Dec 2, 7:00 AM MSTSNOW 4.5Harrison, NECORRECTS PREVIOUS SNOW REPORT INCORRECTLY ASSIGNED TO 9 WSW HARRISON. CO-OP OBSERVER STATION HRNN1, HARRISON.
Dec 2, 7:00 AM MSTSNOW 5.32 Se Chadron State Park, NECOCORAHS STATION NE-DS-1, 1 SE CHADRON STATE PARK.
Dec 2, 8:00 AM MSTSNOW 4Hemingford, NEREPORT RECEIVED VIA FACEBOOK.
Dec 2, 8:05 AM MSTSNOW 34 E Lance Creek, WYREPORT RECEIVED VIA FACEBOOK.
Dec 2, 10:30 AM MSTHEAVY SNOW 6Chadron, NEREPORT RECEIVED VIA FACEBOOK.
Dec 2, 10:55 AM MSTSNOW 3.510 N Lusk, WYREPORT RECEIVED VIA FACEBOOK.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Rapid City, SD (KRAP), launched 00:00Z, 9.5 hours before the alert went out and 172 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Rapid City, SD at 00:00Z on 2018-11-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Rapid City, SD at 00:00Z on 2018-11-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 78 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1611 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
78 m²/s²
0-3 km storm-relative helicity
77 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

186 
WWUS45 KCYS 300932
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
232 AM MST Fri Nov 30 2018

...Significant Snowfall Event Expected Friday Night Through 
Sunday Morning...

.A slow moving trough aloft will bring widespread snow to much of
southeast Wyoming and western Nebraska through Sunday morning. The
greatest amounts of snow are expected north of a Douglas to
Alliance line, and over the Snowy and Sierra Madre Ranges.

NEZ002-003-095-WYZ102-302300-
/O.UPG.KCYS.WS.A.0017.181201T0100Z-181202T1300Z/
/O.NEW.KCYS.WS.W.0021.181201T0100Z-181202T1900Z/
Dawes-Box Butte-North Sioux-Niobrara County-
Including the cities of Chadron, Chadron St Park, Alliance, 
Harrison, Lusk, and Redbird
232 AM MST Fri Nov 30 2018

...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO NOON
MST SUNDAY...

* WHAT...Periods of snow, moderate to heavy at times. Total snow
  accumulations of 5 to 8 inches.

* WHERE...Niobrara County of southeast Wyoming. Northern Sioux, 
  Dawes and Box Butte Counties of the Nebraska Panhandle.

* WHEN...From 6 PM this evening to noon MST Sunday.

* ADDITIONAL DETAILS...Roads will become icy, snowpacked and 
  slick. Visibilities below one half mile at times in falling 
  snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice will make travel very hazardous or impossible. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ101-302300-
/O.UPG.KCYS.WS.A.0017.181201T0100Z-181202T1300Z/
/O.EXB.KCYS.WW.Y.0041.181201T0100Z-181202T1900Z/
Converse County Lower Elevations-
Including the cities of Bill, Douglas, Deer Creek, and Glenrock
232 AM MST Fri Nov 30 2018

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO
NOON MST SUNDAY...

* WHAT...Periods of snow, moderate to heavy at times. Total snow
  accumulations of 3 to 6 inches with localized amounts up to 8
  inches in northeast Converse County.

* WHERE...Converse County of southeast Wyoming. 
 
* WHEN...From 6 PM this evening to noon MST Sunday.

* ADDITIONAL DETAILS...Roads will likely become icy, snowpacked 
  and slick. Visibilities below one half mile at times in 
  falling snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Expect slippery
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.

&&

$$

NEZ019>021-055-096-WYZ107-108-302300-
/O.EXB.KCYS.WW.Y.0041.181201T0100Z-181202T1900Z/
Scotts Bluff-Banner-Morrill-Cheyenne-South Sioux-
East Platte County-Goshen County-
Including the cities of Scottsbluff, Gering, Harrisburg, Angora, 
Bridgeport, Bayard, Redington, Brownson, Sidney, Agate, 
Wheatland, Guernsey, and Torrington
232 AM MST Fri Nov 30 2018

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO
NOON MST SUNDAY...

* WHAT...Periods of snow, moderate to heavy at times. Total snow
  accumulations of 3 to 6 inches with localized amounts up to 8
  inches. 

* WHERE...Eastern Platte and Goshen Counties of southeast Wyoming.
  Southern Sioux, Scotts Bluff, Banner, Morrill and Cheyenne
  Counties of the Nebraska Panhandle. 

* WHEN...From 6 PM this evening to noon MST Sunday.

* ADDITIONAL DETAILS...Roads will likely become icy, snowpacked 
  and slick. Visibilities below one half mile at times in 
  falling snow.

* TIMING...Friday night through Sunday morning.

* MAIN IMPACT...Roads may become snowpacked and cause difficulty 
  traveling.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Expect slippery
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.

&&

$$

WYZ112-114-302300-
/O.CON.KCYS.WW.Y.0041.000000T0000Z-181202T0000Z/
Sierra Madre Range-Snowy Range-
Including the cities of Centennial and Albany
232 AM MST Fri Nov 30 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST
SATURDAY...

* WHAT...Periods of snow, heavy at times. Additional snowfall
  amounts of 6 to 12 inches.

* WHERE...Snowy and Sierra Madre Ranges.

* WHEN...Until 5 PM MST Saturday.

* ADDITIONAL DETAILS...Travel could be very difficult. The 
  hazardous conditions could impact snow mobiles...hunters and 
  other outdoor recreationists. Low visibility and near whiteout 
  conditions could lead to disorientation with people becoming 
  lost.

* TIMING...Through Saturday afternoon.

* MAIN IMPACT...Periods of heavy and blowing snow. Roads may 
  become snowpacked and cause difficulty traveling.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Expect snow covered roads
and limited visibilities, and use caution while driving.

&&

$$

Rubin
5 follow-up statements
826 
WWUS45 KCYS 302103
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
203 PM MST Fri Nov 30 2018

...Winter Weather Expected Late Tonight Through Sunday Morning...

.A slow moving storm system will bring widespread snow to much of
southeast Wyoming and western Nebraska through Sunday morning. 
The greatest amounts of snow are expected north of a Douglas to 
Alliance line, and over the Snowy and Sierra Madre Ranges.

NEZ002-003-095-WYZ102-011200-
/O.EXT.KCYS.WS.W.0021.181201T0600Z-181202T1900Z/
Dawes-Box Butte-North Sioux-Niobrara County-
Including the cities of Chadron, Chadron St Park, Alliance, 
Harrison, Lusk, and Redbird
203 PM MST Fri Nov 30 2018

...WINTER STORM WARNING NOW IN EFFECT FROM 11 PM THIS EVENING TO
NOON MST SUNDAY...

* WHAT...Periods of snow starting tonight, moderate to heavy at
  times by early Saturday morning. Total snow accumulations of 5 
  to 8 inches with locally higher amounts up to 10 inches.

* WHERE...Niobrara County of southeast Wyoming. Northern Sioux, 
  Dawes and Box Butte Counties of the Nebraska Panhandle.

* WHEN...From 11 PM this evening to noon MST Sunday.

* ADDITIONAL DETAILS...Roads will become icy, snowpacked and 
  slick. Visibilities below one half mile at times in falling 
  snow.

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.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

NEZ019>021-055-096-WYZ101-107-108-011200-
/O.EXT.KCYS.WW.Y.0041.181201T1300Z-181202T1900Z/
Scotts Bluff-Banner-Morrill-Cheyenne-South Sioux-
Converse County Lower Elevations-East Platte County-Goshen County-
Including the cities of Scottsbluff, Gering, Harrisburg, Angora, 
Bridgeport, Bayard, Redington, Brownson, Sidney, Agate, Bill, 
Douglas, Deer Creek, Glenrock, Wheatland, Guernsey, 
and Torrington
203 PM MST Fri Nov 30 2018

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 6 AM SATURDAY TO
NOON MST SUNDAY...

* WHAT...Periods of snow, mainly Saturday and Saturday night.
  Total snow accumulations of 2 to 5 inches with localized 
  amounts up to 7 inches.

* WHERE...Eastern Platte and Goshen Counties of southeast 
  Wyoming. Southern Sioux, Scotts Bluff, Banner, Morrill and 
  Cheyenne Counties of the Nebraska Panhandle.

* WHEN...From 6 AM Saturday to noon MST Sunday.

* ADDITIONAL DETAILS...Roads will likely become icy, snowpacked
  and slick. Visibilities around one half mile at times in 
  falling snow.

* TIMING...Friday night through Sunday morning.

* MAIN IMPACT...Roads may become snowpacked and cause difficult
  travel conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Expect slippery
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.

&&

$$

WYZ112-114-011200-
/O.CON.KCYS.WW.Y.0041.000000T0000Z-181202T0000Z/
Sierra Madre Range-Snowy Range-
Including the cities of Centennial and Albany
203 PM MST Fri Nov 30 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST
SATURDAY...

* WHAT...Periods of snow, heavy at times. Additional snowfall
  amounts of 4 to 8 inches.

* WHERE...Snowy and Sierra Madre Ranges.

* WHEN...Until 5 PM MST Saturday.

* ADDITIONAL DETAILS...Travel could be very difficult. The
  hazardous conditions could impact snow mobiles...hunters and
  other outdoor recreationists. 

* TIMING...Through Saturday afternoon.

* MAIN IMPACT...Periods of heavy and blowing snow. Roads may 
  become snowpacked and cause difficulty traveling.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Expect slippery
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.

&&

$$
693 
WWUS45 KCYS 011018
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
318 AM MST Sat Dec 1 2018

...WINTER WEATHER EXPECTED TODAY THROUGH SUNDAY MORNING... 

NEZ002-003-095-WYZ102-020000-
/O.CON.KCYS.WS.W.0021.000000T0000Z-181202T1900Z/
Dawes-Box Butte-North Sioux-Niobrara County-
Including the cities of Chadron, Chadron St Park, Alliance, 
Harrison, Lusk, and Redbird
318 AM MST Sat Dec 1 2018

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MST SUNDAY...

* WHAT...Periods of snow, heavy at times. Total snow accumulations
  of 6 to 10 inches.

* WHERE...Niobrara county in east central Wyoming, Northern Sioux,
  Dawes and Box Butte counties in the northern Nebraska Panhandle.

* WHEN...Until noon MST Sunday.

* ADDITIONAL DETAILS...Dangerous travel conditions with icy, snow
  covered roads. Visibilities may be reduced below one half mile
  at times in falling snow. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions will make travel very hazardous or impossible. If you
must travel, keep an extra flashlight, food and water in your
vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ112-114-020000-
/O.CON.KCYS.WW.Y.0041.000000T0000Z-181202T0000Z/
Sierra Madre Range-Snowy Range-
Including the cities of Centennial and Albany
318 AM MST Sat Dec 1 2018

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

* WHAT...Periods of snow and blowing snow. Additional snow
  accumulations of up to two inches. Winds may gust as high as 40
  mph.

* WHERE...Snowy and Sierra Madre Mountain Ranges. 

* WHEN...Until 5 PM MST this afternoon.

* ADDITIONAL DETAILS...Hazardous travel conditions with icy, snow
  covered roads. Visibilities may be reduced below one half mile 
  at times in falling and blowing snow. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Expect 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.

&&

$$

NEZ019>021-055-096-WYZ101-107-108-020000-
/O.CON.KCYS.WW.Y.0041.181201T1300Z-181202T1900Z/
Scotts Bluff-Banner-Morrill-Cheyenne-South Sioux-
Converse County Lower Elevations-East Platte County-Goshen County-
Including the cities of Scottsbluff, Gering, Harrisburg, Angora, 
Bridgeport, Bayard, Redington, Brownson, Sidney, Agate, Bill, 
Douglas, Deer Creek, Glenrock, Wheatland, Guernsey, 
and Torrington
318 AM MST Sat Dec 1 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM THIS
MORNING TO NOON MST SUNDAY...

* WHAT...Periods of snow and blowing snow. Total snow 
  accumulations of 3 to 5 inches, with locally higher amounts 
  possible. Winds may gust as high as 35 MPH. 

* WHERE...In Southeast Wyoming, Converse, eastern Platte, and
  Goshen counties. In Western Nebraska, Scotts Bluff, Banner,
  Morrill and Cheyenne counties. 

* WHEN...Until noon MST Sunday.

* ADDITIONAL DETAILS...Hazardous travel conditions with icy, snow
  covered roads. Visibilities may be reduced below one half mile 
  at times in falling and blowing snow. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Expect 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.

&&

$$

CLH
605 
WWUS45 KCYS 012017
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
117 PM MST Sat Dec 1 2018

...OCCASIONAL SNOW THROUGH SUNDAY MORNING...

WYZ102-021200-
/O.CAN.KCYS.WS.W.0021.000000T0000Z-181202T1900Z/
/O.EXA.KCYS.WW.Y.0041.000000T0000Z-181202T1900Z/
Niobrara County-
Including the cities of Lusk and Redbird
117 PM MST Sat Dec 1 2018

...WINTER WEATHER ADVISORY IN EFFECT UNTIL NOON MST SUNDAY...
...WINTER STORM WARNING IS CANCELLED...

* WHAT...Snow. Additional snow accumulations of 3 to 5 inches.

* WHERE...Niobrara County, including Lusk, Manville and Redbird.

* WHEN...Until Noon MST Sunday.

* ADDITIONAL DETAILS...Plan on slippery road conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Expect 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.

&&

$$

WYZ112-114-012130-
/O.CAN.KCYS.WW.Y.0041.000000T0000Z-181202T0000Z/
Sierra Madre Range-Snowy Range-
Including the cities of Centennial and Albany
117 PM MST Sat Dec 1 2018

...WINTER WEATHER ADVISORY IS CANCELLED...

Snow has tapered off over the Snowy and Sierra Madre Ranges. An 
additional inch of snow is expected through late this afternoon.

$$

NEZ002-003-095-021200-
/O.CON.KCYS.WS.W.0021.000000T0000Z-181202T1900Z/
Dawes-Box Butte-North Sioux-
Including the cities of Chadron, Chadron St Park, Alliance, 
and Harrison
117 PM MST Sat Dec 1 2018

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MST SUNDAY...

* WHAT...Moderate snow. Additional snow accumulations of 4 to 6
  inches with locally higher amounts along the Pine Ridge.

* WHERE...Northern Sioux, Dawes and Box Butte counties in the
  northern Nebraska Panhandle, including Chadron and Alliance.

* WHEN...Until Noon MST Sunday.

* ADDITIONAL DETAILS...Plan on slippery road conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions will make travel very hazardous or impossible. If you
must travel, keep an extra flashlight, food and water in your
vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

NEZ019>021-055-096-WYZ101-107-108-021200-
/O.CON.KCYS.WW.Y.0041.000000T0000Z-181202T1900Z/
Scotts Bluff-Banner-Morrill-Cheyenne-South Sioux-
Converse County Lower Elevations-East Platte County-Goshen County-
Including the cities of Scottsbluff, Gering, Harrisburg, Angora, 
Bridgeport, Bayard, Redington, Brownson, Sidney, Agate, Bill, 
Douglas, Deer Creek, Glenrock, Wheatland, Guernsey, 
and Torrington
117 PM MST Sat Dec 1 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MST
SUNDAY...

* WHAT...Snow. Additional snow accumulations of 2 to 4 inches.
  Northwest winds gusting as high as 35 mph this afternoon.

* WHERE...In Southeast Wyoming, Converse, East Platte, and Goshen
  counties. In Western Nebraska, Scotts Bluff, Banner, Morrill, 
  South Sioux, and Cheyenne counties.

* WHEN...Until Noon MST Sunday.

* ADDITIONAL DETAILS...Plan on slippery road conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Expect 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.

&&

$$
328 
WWUS45 KCYS 020957
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
257 AM MST Sun Dec 2 2018

...OCCASIONAL SNOW THROUGH THIS MORNING... 

WYZ101-107-021100-
/O.CAN.KCYS.WW.Y.0041.000000T0000Z-181202T1900Z/
Converse County Lower Elevations-East Platte County-
Including the cities of Bill, Douglas, Deer Creek, Glenrock, 
Wheatland, and Guernsey
257 AM MST Sun Dec 2 2018

...WINTER WEATHER ADVISORY IS CANCELLED...

Light snow showers will remain a possibility this morning, and
some slick spots may still exist on area roadways. However, the
threat for widespread accumulating snowfall has ended. 

$$

NEZ002-003-095-021900-
/O.CON.KCYS.WS.W.0021.000000T0000Z-181202T1900Z/
Dawes-Box Butte-North Sioux-
Including the cities of Chadron, Chadron St Park, Alliance, 
and Harrison
257 AM MST Sun Dec 2 2018

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MST TODAY...

* WHAT...Accumulating snowfall has ended. However, some roadways
  remain very slick and snow covered. 

* WHERE...Northern Nebraska Panhandle including Harrison, Chadron
  and Alliance. 

* WHEN...Until noon MST today.

* ADDITIONAL DETAILS...Plan on hazardous travel conditions this
  morning, especially on secondary roads. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions will make travel very hazardous or impossible. If you
must travel, keep an extra flashlight, food and water in your
vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

NEZ019>021-055-096-WYZ102-108-021900-
/O.CON.KCYS.WW.Y.0041.000000T0000Z-181202T1900Z/
Scotts Bluff-Banner-Morrill-Cheyenne-South Sioux-Niobrara County-
Goshen County-
Including the cities of Scottsbluff, Gering, Harrisburg, Angora, 
Bridgeport, Bayard, Redington, Brownson, Sidney, Agate, Lusk, 
Redbird, and Torrington
257 AM MST Sun Dec 2 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MST
TODAY...

* WHAT...Accumulating snowfall has ended. However, some roadways
  remain very slick and snow covered. 

* WHERE...In Wyoming, Niobrara and Goshen counties. In Nebraska,
  Scotts Bluff, Banner, Morrill and Cheyenne counties. 

* WHEN...Until noon MST today.

* ADDITIONAL DETAILS...Plan on hazardous travel conditions this
  morning. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Expect 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.

&&

$$
634 
WWUS45 KCYS 021745
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
1045 AM MST Sun Dec 2 2018

...WINTER STORM WARNING IS CANCELLED...

NEZ002-003-095-021845-
/O.CAN.KCYS.WS.W.0021.000000T0000Z-181202T1900Z/
Dawes-Box Butte-North Sioux-
Including the cities of Chadron, Chadron St Park, Alliance, 
and Harrison
1045 AM MST Sun Dec 2 2018

...WINTER STORM WARNING IS CANCELLED...

Snow has diminished to flurries over the northern Nebraska
Panhandle. Motorists however, should be prepared for snow
covered roadways.

$$

NEZ019>021-055-096-WYZ102-108-021845-
/O.CAN.KCYS.WW.Y.0041.000000T0000Z-181202T1900Z/
Scotts Bluff-Banner-Morrill-Cheyenne-South Sioux-Niobrara County-
Goshen County-
Including the cities of Scottsbluff, Gering, Harrisburg, Angora, 
Bridgeport, Bayard, Redington, Brownson, Sidney, Agate, Lusk, 
Redbird, and Torrington
1045 AM MST Sun Dec 2 2018

...WINTER WEATHER ADVISORY IS CANCELLED...

Snow has diminished to flurries over east and southeast Wyoming
and the southern Nebraska Panhandle. Motorists however, should
be prepared for snow covered roadways.

$$

Nearby

Winter Storm Warnings in Nebraska, 2018Winter Storm Warnings in Wyoming, 2018Every winter storm warning in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.