Winter Storm Warning 10, NWS Cheyenne, WY

573 
WWUS45 KCYS 310945
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
345 AM MDT Fri Mar 31 2017

...WINTER STORM WARNING FOR THE FERRIS AND SEMINOE MOUNTAINS IN
NORTHERN CARBON COUNTY AND THE SOUTHERN LARAMIE RANGE BETWEEN
CHEYENNE AND LARAMIE...

...WINTER WEATHER ADVISORY FOR PORTIONS OF SOUTHEAST WYOMING...

WYZ116-117-312100-
/O.UPG.KCYS.WS.A.0011.170331T1800Z-170401T1800Z/
/O.EXB.KCYS.WS.W.0010.170331T1500Z-170401T1800Z/
South Laramie Range-South Laramie Range Foothills-
Including the cities of Buford, Pumpkin Vine, Vedauwoo, Whitaker,
Federal, and Horse Creek
345 AM MDT Fri Mar 31 2017

...WINTER STORM WARNING IN EFFECT FROM 9 AM THIS MORNING TO NOON
MDT SATURDAY...

The National Weather Service in Cheyenne has issued a Winter
Storm Warning for Snow and Blowing Snow, which is in effect from 
9 AM this morning to noon MDT Saturday. The Winter Storm Watch is 
no longer in effect.


* TIMING...Snow will intensify later this morning, and will remain
  moderate to heavy at times through through Noon MDT Saturday.

* TOTAL SNOW ACCUMULATIONS...5 to 10 inches with locally higher 
  amounts possible. 

* WINDS/VISIBILITY...East winds 10 to 20 MPH with gusts up to 30
  MPH, strongest this afternoon. Visibilities may be reduced to under
  one half mile at times in falling or blowing snow. 

* IMPACTS...Dangerous travel conditions possible along Interstate
  80 between Laramie and Cheyenne. Slick and snow packed roads are
  expected along with low visibilities. Conditions are expected to
  rapidly worsen after 3 PM MDT this afternoon. 

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.

&&

$$

WYZ104-312100-
/O.CON.KCYS.WS.W.0010.000000T0000Z-170401T1200Z/
Ferris/Seminoe/Shirley Mountains-
Including the city of Seminoe Dam
345 AM MDT Fri Mar 31 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT
SATURDAY...

* TIMING...Through 6 AM MST Saturday.

* TOTAL SNOW ACCUMULATIONS...6 to 12 inches in the Ferris and 
  Seminoe mountains of northern Carbon county. 

* WINDS/VISIBILITY...Northeast winds 15 to 25 MPH with gusts up to
  35 MPH. Visibility may be reduced to under one half mile at 
  times on Friday in snow and blowing snow. 

* IMPACTS...Dangerous travel with slick and snow packed roads 
  likely along with low visibility. 

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.

&&

$$

WYZ115-118-312100-
/O.UPG.KCYS.WS.A.0011.170331T1800Z-170401T1800Z/
/O.NEW.KCYS.WW.Y.0017.170331T1500Z-170401T1200Z/
Laramie Valley-Central Laramie County-
Including the cities of Bosler, Laramie, and Cheyenne
345 AM MDT Fri Mar 31 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 AM THIS MORNING TO
6 AM MDT SATURDAY...

The National Weather Service in Cheyenne has issued a Winter
Weather Advisory for Snow and Blowing snow, which is in effect 
from 9 AM this morning to 6 AM MDT Saturday. The Winter Storm 
Watch is no longer in effect. 

* TIMING...Snow will begin to intensify later this morning with 
light to moderate snow expected through early Saturday morning.

* TOTAL SNOW ACCUMULATIONS...3 to 6 inches, lowest amounts near
  the city of Laramie and lower elevations east of Cheyenne. 

* WINDS/VISIBILITY...East winds 10 to 20 MPH with gusts up to 30
  MPH, strongest this afternoon. Visibilities may be reduced to
  under one mile at times in falling or blowing snow. 

* IMPACTS...Hazardous travel possible in and around the cities of
  Cheyenne and Laramie with slick or snow covered roads and low
  visibility. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means that
snow and strong winds will create restricted visibilities and
drifting snow along area roadways. Use caution when traveling...
especially in open areas.

&&

$$

WYZ101-106-110-119-312100-
/O.NEW.KCYS.WW.Y.0017.170331T1500Z-170401T1200Z/
Converse County Lower Elevations-
Central Laramie Range and Southwest Platte County-
North Snowy Range Foothills-East Laramie County-
Including the cities of Bill, Douglas, Deer Creek, Glenrock, 
Bordeaux, Arlington, Elk Mountain, and Pine Bluffs
345 AM MDT Fri Mar 31 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 AM THIS MORNING TO
6 AM MDT SATURDAY...

The National Weather Service in Cheyenne has issued a Winter
Weather Advisory for Snow and Blowing Snow, which is in effect 
from 9 AM this morning to 6 AM MDT Saturday. 

* TIMING...Snow will intensify later this morning with light to
  moderate snow continuing through early Saturday morning.

* TOTAL SNOW ACCUMULATIONS...3 to 6 inches, with locally higher
  amounts. Highest accumulations are expected in areas closer to 
  the mountains. This includes I-25 from Glenrock to Douglas and 
  again near Bordeaux, and also I-80 near Arlington.

* WINDS/VISIBILITY...East winds 10 to 20 MPH with gusts up to 30
  MPH, strongest this afternoon. Stronger gusts to near 40 mph are
  possible in the Arlington area. Visibilities may be reduced to 
  under one mile at times in falling or blowing snow. 

* IMPACTS...Hazardous travel likely due to slick or snow covered
  roads and low visibility. This includes portions of I-80 and
  I-25.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means that
snow and strong winds will create restricted visibilities and
drifting snow along area roadways. Use caution when traveling...
especially in open areas.

&&

$$

WYZ103-114-312100-
/O.NEW.KCYS.WW.Y.0017.170331T1500Z-170401T1200Z/
North Laramie Range-Snowy Range-
Including the cities of Garrett, Centennial, and Albany
345 AM MDT Fri Mar 31 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 AM THIS MORNING TO
6 AM MDT SATURDAY...

The National Weather Service in Cheyenne has issued a Winter
Weather Advisory for Snow and Blowing Snow, which is in effect 
from 9 AM this morning to 6 AM MDT Saturday. 

* TIMING...Snow will intensify later this morning with moderate 
  snow continuing through early Saturday morning.

* TOTAL SNOW ACCUMULATIONS...7 to 11 inches, with locally higher
  amounts along the east facing slopes. 

* WINDS/VISIBILITY...East winds 10 to 20 MPH with gusts up to 30
  MPH, strongest this afternoon. Visibilities may be reduced to 
  under one mile at times in falling or blowing snow. 

* IMPACTS...Hazardous travel likely due to slick or snow covered
  roads and low visibility. Outdoor recreationists should prepare
  for excessive snow and gusty winds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means that
snow and strong winds will create restricted visibilities and
drifting snow along area roadways. Use caution when traveling...
especially in open areas.

&&

$$

103 
WWUS45 KCYS 311607
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
1007 AM MDT Fri Mar 31 2017

...WINTER STORM WARNING FOR THE FERRIS AND SEMINOE MOUNTAINS IN
NORTHERN CARBON COUNTY AND THE SOUTHERN LARAMIE RANGE BETWEEN
CHEYENNE AND LARAMIE...

...WINTER WEATHER ADVISORY FOR PORTIONS OF SOUTHEAST WYOMING...

WYZ104-010015-
/O.CON.KCYS.WS.W.0010.000000T0000Z-170401T1200Z/
Ferris/Seminoe/Shirley Mountains-
Including the city of Seminoe Dam
1007 AM MDT Fri Mar 31 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT
SATURDAY...

* TIMING...Through 6 AM MST Saturday.

* TOTAL SNOW ACCUMULATIONS...6 to 12 inches in the Ferris and 
  Seminoe mountains of northern Carbon county. 

* WINDS/VISIBILITY...Northeast winds 15 to 25 MPH with gusts up 
  to 35 MPH. Visibility may be reduced to under one half mile at 
  times on Friday in snow and blowing snow. 

* IMPACTS...Dangerous travel with slick and snow packed roads 
  likely along with low visibility. 

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.

&&

$$

WYZ116-117-010015-
/O.CON.KCYS.WS.W.0010.000000T0000Z-170401T1800Z/
South Laramie Range-South Laramie Range Foothills-
Including the cities of Buford, Pumpkin Vine, Vedauwoo, Whitaker,
Federal, and Horse Creek
1007 AM MDT Fri Mar 31 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT
SATURDAY...

* TIMING...Snow will intensify later this morning, and will 
  remain moderate to heavy at times through through Noon MDT 
  Saturday. 

* TOTAL SNOW ACCUMULATIONS...5 to 10 inches with locally higher 
  amounts possible. 

* WINDS/VISIBILITY...East winds 10 to 20 MPH with gusts up to 30 
  MPH, strongest this afternoon. Visibilities may be reduced to 
  under one half mile at times in falling or blowing snow. 

* IMPACTS...Dangerous travel conditions possible along 
  Interstate 80 between Laramie and Cheyenne. Slick and snow 
  packed roads are expected along with low visibilities. 
  Conditions are expected to rapidly worsen after 3 PM MDT this 
  afternoon. 

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.

&&

$$

WYZ102-010015-
/O.EXA.KCYS.WW.Y.0017.000000T0000Z-170401T1200Z/
Niobrara County-
Including the cities of Lusk and Redbird
1007 AM MDT Fri Mar 31 2017

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 AM MDT SATURDAY...

The National Weather Service in Cheyenne has issued a Winter
Weather Advisory for snow, which is in effect until 6 AM MDT 
Saturday. 

* TIMING...Snow will be moderate to heavy at times through this
  afternoon before tapering off late this evening.

* TOTAL SNOW ACCUMULATIONS...3 to 5 inches in southern Niobrara
  county. Little or no accumulations across the northern portion
  of the county.

* WINDS/VISIBILITY...East winds 10 to 20 MPH. Visibilities may be
  reduced to under one mile at times in falling or blowing snow. 

* IMPACTS...Hazardous travel possible in and around Lusk. Periods
  of heavy snow will result in areas of slick and snow covered
  roadways.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means that
snow and strong winds will create restricted visibilities and
drifting snow along area roadways. Use caution when traveling...
especially in open areas.

&&

$$

WYZ101-106-110-115-118-119-010015-
/O.CON.KCYS.WW.Y.0017.000000T0000Z-170401T1200Z/
Converse County Lower Elevations-
Central Laramie Range and Southwest Platte County-
North Snowy Range Foothills-Laramie Valley-Central Laramie County-
East Laramie County-
Including the cities of Bill, Douglas, Deer Creek, Glenrock, 
Bordeaux, Arlington, Elk Mountain, Bosler, Laramie, Cheyenne, 
and Pine Bluffs
1007 AM MDT Fri Mar 31 2017

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

* TIMING...Snow will intensify later this morning with light to 
  moderate snow continuing through early Saturday morning. 

* TOTAL SNOW ACCUMULATIONS...3 to 6 inches, with locally higher 
  amounts. Highest accumulations are expected in areas closer to 
  the mountains. This includes I-25 from Glenrock to Douglas and 
  again near Bordeaux, and also I-80 near Arlington. 

* WINDS/VISIBILITY...East winds 10 to 20 MPH with gusts up to 30 
  MPH, strongest this afternoon. Stronger gusts to near 40 mph 
  are possible in the Arlington area. Visibilities may be 
  reduced to under one mile at times in falling or blowing snow. 

* IMPACTS...Hazardous travel likely due to slick or snow covered 
  roads and low visibility. This includes portions of I-80 and 
  I- 25. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means that
snow and strong winds will create restricted visibilities and
drifting snow along area roadways. Use caution when traveling...
especially in open areas.

&&

$$

WYZ103-114-010015-
/O.CON.KCYS.WW.Y.0017.000000T0000Z-170401T1200Z/
North Laramie Range-Snowy Range-
Including the cities of Garrett, Centennial, and Albany
1007 AM MDT Fri Mar 31 2017

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

* TIMING...Snow will intensify later this morning with moderate 
  snow continuing through early Saturday morning. 

* TOTAL SNOW ACCUMULATIONS...7 to 11 inches, with locally higher 
  amounts along the east facing slopes. 

* WINDS/VISIBILITY...East winds 10 to 20 MPH with gusts up to 30 
  MPH, strongest this afternoon. Visibilities may be reduced to 
  under one mile at times in falling or blowing snow. 

* IMPACTS...Hazardous travel likely due to slick or snow covered 
  roads and low visibility. Outdoor recreationists should 
  prepare for excessive snow and gusty winds. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means that
snow and strong winds will create restricted visibilities and
drifting snow along area roadways. Use caution when traveling...
especially in open areas.

&&

$$

809 
WWUS45 KCYS 312012
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
212 PM MDT Fri Mar 31 2017

...WINTER STORM WARNING FOR THE SOUTHERN LARAMIE RANGE BETWEEN 
CHEYENNE AND LARAMIE...

...WINTER WEATHER ADVISORY FOR PORTIONS OF SOUTHEAST WYOMING...

WYZ104-010415-
/O.CAN.KCYS.WS.W.0010.000000T0000Z-170401T1200Z/
/O.EXA.KCYS.WW.Y.0017.000000T0000Z-170401T1200Z/
Ferris/Seminoe/Shirley Mountains-
Including the city of Seminoe Dam
212 PM MDT Fri Mar 31 2017

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 AM MDT SATURDAY...

...WINTER STORM WARNING IS CANCELLED...

The National Weather Service in Cheyenne has issued a Winter
Weather Advisory for snow, which is in effect until 6 AM MDT 
Saturday. The Winter Storm Warning has been cancelled. 

* TIMING...Snow will continue through late this evening across far
  northern Carbon county. 

* TOTAL SNOW ACCUMULATIONS...2 to 4 inches, with locally higher
  amounts in the mountains. Little or no snowfall closer to
  Interstate 80.

* WINDS/VISIBILITY...East winds 10 to 20 MPH with gusts up to 30
  MPH, strongest this afternoon. Visibilities may be reduced to 
  under one mile at times in falling snow. 

* IMPACTS...Hazardous travel likely due to slick or snow covered
  roads and low visibility. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means that periods of snow
will cause travel difficulties. Be prepared for snow covered
roads and limited visibilities...and use caution while driving.

&&

$$

WYZ116-117-010415-
/O.CON.KCYS.WS.W.0010.000000T0000Z-170401T1800Z/
South Laramie Range-South Laramie Range Foothills-
Including the cities of Buford, Pumpkin Vine, Vedauwoo, Whitaker,
Federal, and Horse Creek
212 PM MDT Fri Mar 31 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT
SATURDAY...

* TIMING...Snow will intensify this afternoon, and will remain
  moderate to heavy at times through through early Saturday 
  morning.

* TOTAL SNOW ACCUMULATIONS...4 to 7 inches with locally higher 
  amounts possible. 

* WINDS/VISIBILITY...East winds 10 to 20 MPH with gusts up to 30
  MPH. Visibilities will be reduced to under one half mile at
  times in falling snow. 

* IMPACTS...Dangerous travel conditions possible along Interstate
  80 between Laramie and Cheyenne. Slick and snow packed roads are
  expected along with 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.

&&

$$

WYZ101-102-106-110-115-118-119-010415-
/O.CON.KCYS.WW.Y.0017.000000T0000Z-170401T1200Z/
Converse County Lower Elevations-Niobrara County-
Central Laramie Range and Southwest Platte County-
North Snowy Range Foothills-Laramie Valley-Central Laramie County-
East Laramie County-
Including the cities of Bill, Douglas, Deer Creek, Glenrock, 
Lusk, Redbird, Bordeaux, Arlington, Elk Mountain, Bosler, 
Laramie, Cheyenne, and Pine Bluffs
212 PM MDT Fri Mar 31 2017

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

* TIMING...Periods of light to moderate snow will continue through
  early Saturday morning. 

* TOTAL SNOW ACCUMULATIONS...2 to 4 inches, with locally higher
  amounts. Highest accumulations are expected in areas closer to
  the mountains. 

* WINDS/VISIBILITY...East winds 10 to 20 MPH with gusts up to 30 
  MPH, strongest this afternoon. Stronger gusts to near 40 mph 
  are possible in the Arlington area. Visibilities may be 
  reduced to under one mile at times in falling or blowing snow. 

* IMPACTS...Hazardous travel likely due to slick or snow covered
  roads and low visibility. This includes portions of I-80 and I-25.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means that
snow and strong winds will create restricted visibilities and
drifting snow along area roadways. Use caution when traveling...
especially in open areas.

&&

$$

WYZ103-114-010415-
/O.CON.KCYS.WW.Y.0017.000000T0000Z-170401T1200Z/
North Laramie Range-Snowy Range-
Including the cities of Garrett, Centennial, and Albany
212 PM MDT Fri Mar 31 2017

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

* TIMING...Snow will intensify later this morning with moderate 
  snow continuing through early Saturday morning. 

* TOTAL SNOW ACCUMULATIONS...4 to 8 inches, with locally higher 
  amounts along the east facing slopes. 

* WINDS/VISIBILITY...East winds 10 to 20 MPH with gusts up to 30 
  MPH, strongest this afternoon. Visibilities may be reduced to 
  under one mile at times in falling or blowing snow. 

* IMPACTS...Hazardous travel likely due to slick or snow covered
  roads and low visibility. Outdoor recreationists should prepare
  for snow and gusty winds. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means that periods of snow will
cause travel difficulties. Be prepared for snow covered roads and
limited visibilities...and use caution while driving.

&&

$$

818 
WWUS45 KCYS 010216
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
816 PM MDT Fri Mar 31 2017

...WINTER WEATHER ADVISORIES FOR PORTIONS OF EAST CENTRAL AND SOUTHEAST
WYOMING TONIGHT AND SATURDAY MORNING...

WYZ116-117-011200-
/O.CAN.KCYS.WS.W.0010.000000T0000Z-170401T1800Z/
/O.EXB.KCYS.WW.Y.0017.000000T0000Z-170401T1800Z/
South Laramie Range-South Laramie Range Foothills-
Including the cities of Buford, Pumpkin Vine, Vedauwoo, Whitaker,
Federal, and Horse Creek
816 PM MDT Fri Mar 31 2017

...WINTER WEATHER ADVISORY IN EFFECT UNTIL NOON MDT SATURDAY...
...WINTER STORM WARNING IS CANCELLED...

The National Weather Service in Cheyenne has issued a Winter Weather
Advisory for snow, which is in effect until noon MDT Saturday. The
Winter Storm Warning has been cancelled. 

* TIMING...Occasional snow will continue through Saturday morning.

* TOTAL SNOW ACCUMULATIONS...2 to 4 inches.

* WINDS/VISIBILITY...Northeast winds 10 to 20 mph. Visibilities may
  be reduced to one mile at times in falling snow.

* IMPACTS...Hazardous travel likely due to snow covered roads and
  low visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means that periods of snow will
cause travel difficulties. Be prepared for snow covered roads and
limited visibilities...and use caution while driving.

&&

$$

WYZ104-011200-
/O.CON.KCYS.WW.Y.0017.000000T0000Z-170401T1200Z/
Ferris/Seminoe/Shirley Mountains-
Including the city of Seminoe Dam
816 PM MDT Fri Mar 31 2017

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

* TIMING...Occasional snow will continue through late tonight across
  far northern Carbon county. 

* TOTAL SNOW ACCUMULATIONS...1 to 3 inches.

* WINDS/VISIBILITY...Northeast winds 10 to 20 MPH. Visibilities may
  be reduced to a half mile at times in falling snow. 

* IMPACTS...Hazardous travel likely due to snow covered roads and
  low visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means that periods of snow will
cause travel difficulties. Be prepared for snow covered roads and
limited visibilities...and use caution while driving.

&&

$$

WYZ101-102-106-110-115-118-119-011200-
/O.CON.KCYS.WW.Y.0017.000000T0000Z-170401T1200Z/
Converse County Lower Elevations-Niobrara County-
Central Laramie Range and Southwest Platte County-
North Snowy Range Foothills-Laramie Valley-Central Laramie County-
East Laramie County-
Including the cities of Bill, Douglas, Deer Creek, Glenrock, 
Lusk, Redbird, Bordeaux, Arlington, Elk Mountain, Bosler, 
Laramie, Cheyenne, and Pine Bluffs
816 PM MDT Fri Mar 31 2017

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

* TIMING...Occasional snow will continue through early Saturday morning.

* TOTAL SNOW ACCUMULATIONS...1 to 3 inches.

* WINDS/VISIBILITY...Northeast winds 10 to 20 mph, with gusts up
  to 30 mph until midnight. Visibilities may be reduced to a half
  mile at times in falling and blowing snow. 

* IMPACTS...Hazardous travel likely due to snow covered roads and
  low visibility. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means that snow
and gusty winds will create restricted visibilities and drifting snow
along area roadways. Use caution when traveling...especially in open
areas.

&&

$$

WYZ103-114-011200-
/O.CON.KCYS.WW.Y.0017.000000T0000Z-170401T1200Z/
North Laramie Range-Snowy Range-
Including the cities of Garrett, Centennial, and Albany
816 PM MDT Fri Mar 31 2017

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

* TIMING...Occasional snow will continue through early Saturday morning.

* TOTAL SNOW ACCUMULATIONS...2 to 4 inches, with locally higher amounts
  along the east facing slopes. 

* WINDS/VISIBILITY...East winds 10 to 20 mph, with gusts up to 30
  mph until midnight. Visibilities may be reduced to a half mile
  at times in falling and blowing snow. 

* IMPACTS...Hazardous travel likely due to snow covered roads and
  low visibility. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means that snow
and gusty winds will create restricted visibilities and drifting snow
along area roadways. Use caution when traveling...especially in open
areas.

&&

$$

Area Forecast Discussion
National Weather Service Cheyenne WY
1202 PM MDT Thu Mar 30 2017

.SHORT TERM...(Today through Saturday)
Issued at 242 AM MDT Thu Mar 30 2017

High clouds now spreading into the western parts of the CWA ahead
of the next upper system digging over the far western CONUS.
Warmer today across the CWA as an upper ridge departs to the east
and the upper flow backs to southwesterly. Should see some widely
scattered showers develop this afternoon as weak impulses move by
in a diffluent upper flow. A couple weak storms not out of the
question out west this afternoon though instabilities will be low.
Much cooler and wetter conditions return tonight through Friday
night as an upper low cuts off over southern Utah then drifts
slowly east along the Colorado/New Mexico border...similar in
track to the previous system.  Falling surface pressures over
Colorado will induce a cooler wind flow over the CWA Friday
allowing temperatures to fall. This system looks a little colder
than the last so snow should spread into the plains adjacent to
the mtns especially late Friday into Friday night. Heaviest snow
looks like it will be over the southern Laramie Range where over 6
inches is possible by Saturday morning. Winds not looking too
strong though so will hold off on a watch though at least an
advisory may be needed eventually.

Should see a slow improvement in conditions Saturday as an upper
shortwave moving across southern Canada weakens and opens up the
upper low over the southern high plains with short ridging moving
towards the CWA.

.LONG TERM...(Saturday night through Wednesday)
Issued at 242 AM MDT Thu Mar 30 2017

The upper low looks to push south and east of our forecast area
Saturday night through Sunday, although GFS and ECMWF handle the
departure of this system differently. The ECMWF keeps a closed low
over TX while the GFS shears the upper low apart with an open trough
moving quickly to the east. This will impact a secondary shortwave
trough that is expected to jet east across the plains on Sunday. GFS
is slower and further south with this shortwave than the ECMWF due
to the open trough to the south. Therefore, a few showers are not
out of the question on Sunday if the GFS pans out. Low amplitude
ridging will move over the Rockies on Sunday night and Monday in
advance of yet another strong Pacific storm system approaching the
cwa on Monday. The track of this storm is further north that the
recent storms with the upper low center progged to move across WY/CO
Monday and Monday night. The attendant sfc trough will deepen to the
lee of the mountains, with models developing a low over eastern
Colorado Monday evening. Llvl convergence resulting from the leeside
trough/low combined with plentiful QG dynamics will bring a good
chance for precip starting Monday morning then increasing in
coverage and intensity through Monday night. Rain and high elevation
snow will start in the high country early Monday morning, with rain
and isolated mountain storms expected through the afternoon. Rain
should change to snow in the high country Monday evening, with rain
spreading east over the plains through Monday night. Temperatures
may not get all that cold across the plains on Monday night as 700mb
temps look only to drop to -6C, so we may once again struggle to get
snow below roughly 6000ft.

The system will become stacked on Tuesday as it treks across the
central plains, with rain and high elevation snow continuing through
much of Tuesday in northerly wrap around flow. Northwesterly sfc
winds could become quite strong as the system reaches the central
plains, and with temperatures progged to remain in the 40s, could be
a very unpleasant day. Breezy and cool conditions will continue for
Wednesday as we remain in northwest flow on the backside of the
strong upper low. Rain/snow will steadily push off to the east by
Wednesday morning.

&&

.AVIATION...(For the 18Z TAFS through 18Z Friday afternoon)
Issued at 1157 AM MDT Thu Mar 30 2017

Wyoming TAFS...MVFR at Rawlins until 06Z, then IFR until 15Z, then
MVFR. VFR at Laramie and Cheyenne until 06Z, then IFR.

Nebraska TAFS...VFR at Chadron until 06Z, then MVFR. VFR at
Alliance and Sidney until 06Z, then IFR. VFR at Scottsbluff until
07Z, then MVFR until 13Z, then IFR.

&&

.FIRE WEATHER...
Issued at 242 AM MDT Thu Mar 30 2017

A generally cool and unsettled weather pattern will continue over
the area into early next week with periodic wetting rains and
higher elevation snow keeping fire weather concerns low.

&&

.CYS WATCHES/WARNINGS/ADVISORIES...
WY...Winter Storm Watch from Friday afternoon through Saturday
     morning for WYZ116-117.

     Winter Storm Watch from late tonight through late Friday night
     for WYZ104.

NE...None.
&&

SHORT TERM...RE
LONG TERM...RJM
AVIATION...RUBIN
FIRE WEATHER...RE

Hazardous Weather Outlook
National Weather Service Cheyenne WY
342 AM MDT Thu Mar 30 2017

WYZ101>119-310945-
Converse County Lower Elevations-Niobrara County-
North Laramie Range-Ferris/Seminoe/Shirley Mountains-
Shirley Basin-Central Laramie Range and Southwest Platte County-
East Platte County-Goshen County-Central Carbon County-
North Snowy Range Foothills-Southwest Carbon County-
Sierra Madre Range-Upper North Platte River Basin-Snowy Range-
Laramie Valley-South Laramie Range-South Laramie Range Foothills-
Central Laramie County-East Laramie County-
342 AM MDT Thu Mar 30 2017

This hazardous weather outlook is for portions of east central
Wyoming...south central Wyoming and southeast Wyoming.

.DAY ONE...TODAY AND TONIGHT

A strong Pacific low pressure system will bring widespread
precipitation to the area starting late this afternoon. Snow is
expected tonight mainly above 7000ft with rain in the lower
elevations of southeast Wyoming.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

Widespread precipitation will continue through Saturday morning.
Accumulating snow is likely in the higher elevations, with roughly
3 to 6 inches possible in the Snowy Range and Laramie Ranges.
Snow may occur down to about 5000ft as well, but accumulations
will be less. Another storm system will track across the region
late Monday through Tuesday.

.Spotter information statement...

Spotter activation will not be needed.

NEZ002-003-019>021-054-055-095-096-310945-
Dawes-Box Butte-Scotts Bluff-Banner-Morrill-Kimball-Cheyenne-
North Sioux-South Sioux-
342 AM MDT Thu Mar 30 2017

This hazardous weather outlook is for portions of western
Nebraska.

.DAY ONE...TODAY AND TONIGHT

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

A couple of Pacific low pressure systems will bring rain Friday
morning through Saturday...and again late monday through Tuesday.
Rain may mix with snow Friday and Friday night.

.Spotter information statement...

Spotter activation will not be needed.