High Wind Warning 4, NWS Riverton, WY

528 
WWUS75 KRIW 241130
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
430 AM MST Wed Jan 24 2018

...Winds will increase this morning and continue into Thursday...

.Winds will continue to increase this morning and continue
through the day today. Strong winds will subside somewhat
tonight, before returning Thursday as a cold front approaches
from the west.

WYZ019-242300-
/O.CON.KRIW.HW.W.0004.180124T1200Z-180126T0000Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
430 AM MST Wed Jan 24 2018

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THURSDAY...

* TIMING...Southwest winds will continue to increase this 
  morning, with strong winds expected through the rest of the 
  day. Although these winds will subside somewhat tonight, 
  strong winds will return Thursday morning and continue through 
  Thursday afternoon. 

* WINDS...Southwest 30 to 40 mph today and Thursday, with the 
  potential for 60 mph wind gusts. Southwest 25 to 35 mph with 
  gusts up to 50 mph expected tonight. 

* IMPACTS...Travellers between Sweetwater Station and Muddy Gap 
  will encounter strong and erratic wind gusts and areas of 
  blowing snow with 8 to 10 inches of fresh snow to blow around. 
  Visibilities could be sharply reduced at times during periods 
  of strong wind gusts and blowing snow. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring. Sustained wind speeds of at least 40 mph or gusts
of 58 mph or more can lead to property damage.

&&

$$

WYZ020-242300-
/O.CON.KRIW.HW.W.0004.180124T1200Z-180126T0000Z/
Natrona County Lower Elevations-
Including the city of Casper
430 AM MST Wed Jan 24 2018

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THURSDAY...

* TIMING...Southwest winds will continue to increase this 
  morning, with strong winds expected through the rest of the 
  day. Although these winds will subside somewhat tonight, 
  strong winds will return Thursday morning and continue through 
  Thursday afternoon. 

* WINDS...Southwest 30 to 40 mph today and Thursday gusts over 60
  mph, especially on Outer Drive/Wyoming Blvd in Casper. Southwest
  25 to 35 mph with gusts up to 50 mph expected tonight. 

* OBSERVED WIND GUSTS...62 MPH at 4 am on Wyoming Boulevard on the
  southeast side of Casper. 

* IMPACTS...Travellers around the lower elevations of Natrona 
  County will encounter strong and erratic wind gusts and areas 
  of blowing snow with 8 to 10 inches of fresh snow to blow 
  around. Visibilities could be sharply reduced at times during 
  periods of strong wind gusts and blowing snow. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring. Sustained wind speeds of at least 40 mph or gusts
of 58 mph or more can lead to property damage.

&&

$$

907 
WWUS75 KRIW 241907
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
1207 PM MST Wed Jan 24 2018

...Strong to high winds will continue through Thursday afternoon from
Jeffrey City to Casper...

.Very strong to high winds will continue through Thursday
afternoon ahead of a strong cold front that will approach late
in the day Thursday. 

WYZ019-251100-
/O.CON.KRIW.HW.W.0004.000000T0000Z-180126T0000Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
1207 PM MST Wed Jan 24 2018

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THURSDAY...

* TIMING...Very strong to high winds will continue through
  Thursday afternoon.

* WINDS...Southwest 30 to 40 mph with gusts to 60 mph.  

* IMPACTS...Travellers between Sweetwater Station and Muddy Gap 
  will encounter strong and erratic wind gusts and areas of 
  blowing snow with 8 to 10 inches of fresh snow to blow around. 
  Visibilities could be sharply reduced at times during periods 
  of strong wind gusts and blowing snow. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring. Sustained wind speeds of at least 40 mph or gusts
of 58 mph or more can lead to property damage.

&&

$$

WYZ020-251100-
/O.CON.KRIW.HW.W.0004.000000T0000Z-180126T0000Z/
Natrona County Lower Elevations-
Including the city of Casper
1207 PM MST Wed Jan 24 2018

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THURSDAY...

* TIMING...Very strong to high winds will continue through
  Thursday afternoon. 

* WINDS...Southwest 30 to 40 mph with gusts to 60 mph. Even
  stronger wind gusts of 65 to 70 mph are quite possible on the
  south side of Casper, including Outer Drive.

* OBSERVED WIND GUSTS...68 MPH at 540 am on Wyoming Boulevard on
  the southeast side of Casper. Sustained high wind over 40 mph
  have continued much of the day along Outer Drive.

* IMPACTS...Travellers around the lower elevations of Natrona 
  County will encounter strong and erratic wind gusts and areas 
  of blowing snow with 8 to 10 inches of fresh snow to blow 
  around. Visibilities could be sharply reduced at times during 
  periods of strong wind gusts and blowing snow. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring. Sustained wind speeds of at least 40 mph or gusts
of 58 mph or more can lead to property damage.

&&

$$

WYZ003-251100-
/O.NEW.KRIW.HW.A.0003.180126T0000Z-180126T1500Z/
Cody Foothills-
Including the cities of Cody and Meeteetse
1207 PM MST Wed Jan 24 2018

...HIGH WIND WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH
FRIDAY MORNING...

The National Weather Service in Riverton has issued a High Wind
Watch, which is in effect from Thursday afternoon through Friday
morning. 

* TIMING...A cold front will blast across the area by sunset
  Thursday with strong to high winds expected through Thursday
  night.

* WINDS...West 30 to 40 mph with gusts of 60 to 70 mph possible.

* IMPACTS...Travellers along highway 120 between Meeteetse and
  Clark should be prepared for sudden and sharp cross-winds
  Thursday night.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Watch means there is the potential for a hazardous
high wind event. Sustained winds of at least 40 mph...or gusts of
58 mph or stronger may occur. Continue to monitor the latest
forecasts.

&&

$$

Team Riverton

415 
WWUS75 KRIW 242127
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
227 PM MST Wed Jan 24 2018

...Strong to high winds will continue through Thursday afternoon
from Jeffrey City to Casper...
...Strong to high winds possible in the Cody Foothills Thursday
night through sunrise Friday...

.Very strong to high winds will continue through Thursday
afternoon ahead of a strong cold front that will approach late in
the day Thursday from Jeffrey City to Casper. Another area of
potential high winds may develop between Meeteetse and Clark
Thursday night.

WYZ019-251130-
/O.CON.KRIW.HW.W.0004.000000T0000Z-180126T0000Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
227 PM MST Wed Jan 24 2018

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THURSDAY...

* TIMING...Very strong to high winds will continue through 
  Thursday afternoon. 

* WINDS...Southwest 30 to 40 mph with gusts to 60 mph.

* IMPACTS...Travellers between Sweetwater Station and Muddy Gap 
  will encounter strong and erratic wind gusts and areas of 
  blowing snow with 8 to 10 inches of fresh snow to blow around. 
  Visibilities could be sharply reduced at times during periods 
  of strong wind gusts and blowing snow. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring. Sustained wind speeds of at least 40 mph or gusts
of 58 mph or more can lead to property damage.

&&

$$

WYZ020-251130-
/O.CON.KRIW.HW.W.0004.000000T0000Z-180126T0000Z/
Natrona County Lower Elevations-
Including the city of Casper
227 PM MST Wed Jan 24 2018

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THURSDAY...

* TIMING...Very strong to high winds will continue through 
  Thursday afternoon. 

* WINDS...Southwest 30 to 40 mph with gusts to 60 mph. Even 
  stronger wind gusts of 65 to 70 mph are quite possible on the 
  south side of Casper, including Outer Drive. 

* OBSERVED WIND GUSTS...68 MPH at 540 am on Wyoming Boulevard on 
  the southeast side of Casper. Sustained high wind over 40 mph 
  have continued much of the day along Outer Drive. 

* IMPACTS...Travellers around the lower elevations of Natrona 
  County will encounter strong and erratic wind gusts and areas 
  of blowing snow with 8 to 10 inches of fresh snow to blow 
  around. Visibilities could be sharply reduced at times during 
  periods of strong wind gusts and blowing snow. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring. Sustained wind speeds of at least 40 mph or gusts
of 58 mph or more can lead to property damage.

&&

$$

WYZ003-251130-
/O.CON.KRIW.HW.A.0003.180126T0000Z-180126T1500Z/
Cody Foothills-
Including the cities of Cody and Meeteetse
227 PM MST Wed Jan 24 2018

...HIGH WIND WATCH REMAINS IN EFFECT FROM THURSDAY AFTERNOON
THROUGH FRIDAY MORNING...

* TIMING...A cold front will blast across the area by sunset 
  Thursday with strong to high winds expected through Thursday 
  night. 

* WINDS...West 30 to 40 mph with gusts of 60 to 70 mph possible.

* IMPACTS...Travellers along highway 120 between Meeteetse and 
  Clark should be prepared for sudden and sharp cross-winds 
  Thursday night. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Watch means there is the potential for a hazardous
high wind event. Sustained winds of at least 40 mph...or gusts of
58 mph or stronger may occur. Continue to monitor the latest
forecasts.

&&

$$

482 
WWUS75 KRIW 250307
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
807 PM MST Wed Jan 24 2018

...Strong to high winds will continue through Thursday afternoon
from Jeffrey City to Casper...

...Strong to high winds possible in the Cody Foothills Thursday 
night through sunrise Friday...

.Very strong to high winds will continue through Thursday
afternoon ahead of a strong cold front that will approach late in
the day Thursday from Jeffrey City to Casper. Another area of
potential high winds may develop between Meeteetse and Clark
Thursday night.

WYZ019-251200-
/O.CON.KRIW.HW.W.0004.000000T0000Z-180126T0000Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
807 PM MST Wed Jan 24 2018

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THURSDAY...

* TIMING...Very strong to high winds will continue through 
  Thursday afternoon. 

* WINDS...Southwest 30 to 40 mph with gusts to 60 mph.

* IMPACTS...Travellers between Sweetwater Station and Muddy Gap 
  will encounter strong and erratic wind gusts and areas of 
  blowing snow with 8 to 10 inches of fresh snow to blow around. 
  Visibilities could be sharply reduced at times during periods 
  of strong wind gusts and blowing snow. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring. Sustained wind speeds of at least 40 mph or gusts
of 58 mph or more can lead to property damage.

&&

$$

WYZ020-251200-
/O.CON.KRIW.HW.W.0004.000000T0000Z-180126T0000Z/
Natrona County Lower Elevations-
Including the city of Casper
807 PM MST Wed Jan 24 2018

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THURSDAY...

* TIMING...Very strong to high winds will continue through 
  Thursday afternoon. 

* WINDS...Southwest 30 to 40 mph with gusts to 60 mph. Even 
  stronger wind gusts of 65 to 70 mph are quite possible on the 
  south side of Casper, including Outer Drive. 

* OBSERVED WIND GUSTS...68 MPH at 540 AM Wednesday on Wyoming
  Boulevard on the southeast side of Casper.  

* IMPACTS...Travellers around the lower elevations of Natrona 
  County will encounter strong and erratic wind gusts and areas 
  of blowing snow with 8 to 10 inches of fresh snow to blow 
  around. Visibilities could be sharply reduced at times during 
  periods of strong wind gusts and blowing snow. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring. Sustained wind speeds of at least 40 mph or gusts
of 58 mph or more can lead to property damage.

&&

$$

WYZ003-251200-
/O.CON.KRIW.HW.A.0003.180126T0000Z-180126T1500Z/
Cody Foothills-
Including the cities of Cody and Meeteetse
807 PM MST Wed Jan 24 2018

...HIGH WIND WATCH REMAINS IN EFFECT FROM THURSDAY AFTERNOON
THROUGH FRIDAY MORNING...

* TIMING...A cold front will blast across the area by sunset 
  Thursday with strong to high winds expected through Thursday 
  night. 

* WINDS...West 30 to 40 mph with gusts of 60 to 70 mph possible.

* IMPACTS...Travellers along highway 120 between Meeteetse and 
  Clark should be prepared for sudden and sharp cross-winds 
  Thursday night. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Watch means there is the potential for a hazardous
high wind event. Sustained winds of at least 40 mph...or gusts of
58 mph or stronger may occur. Continue to monitor the latest
forecasts.

&&

$$

TEAM RIVERTON

881 
WWUS75 KRIW 250853
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
153 AM MST Thu Jan 25 2018

...Strong to high winds will continue this afternoon from Jeffrey
City to Casper...

...Strong to high winds possible in the Cody Foothills tonight 
through sunrise Friday...

.Very strong to high winds will continue through this afternoon 
ahead of a strong cold front that will approach late in the day, 
from Jeffrey City to Casper. Another area of potential high winds 
may develop between Meeteetse and Clark tonight.

WYZ019-252300-
/O.CON.KRIW.HW.W.0004.000000T0000Z-180126T0000Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
153 AM MST Thu Jan 25 2018

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

* TIMING...Very strong to high winds will continue through 
  Thursday afternoon. 

* WINDS...Southwest 30 to 40 mph with gusts to 60 mph.

* IMPACTS...Travellers between Sweetwater Station and Muddy Gap
  will encounter strong and erratic wind gusts and areas of
  blowing snow with 8 to 10 inches of snow to blow around. 
  Visibilities could be sharply reduced at times during periods of
  strong wind gusts and blowing snow. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring. Sustained wind speeds of at least 40 mph or gusts
of 58 mph or more can lead to property damage.

&&

$$

WYZ020-252300-
/O.CON.KRIW.HW.W.0004.000000T0000Z-180126T0000Z/
Natrona County Lower Elevations-
Including the city of Casper
153 AM MST Thu Jan 25 2018

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

* TIMING...Very strong to high winds will continue through this 
  afternoon. 

* WINDS...Southwest 30 to 40 mph with gusts to 60 mph. Even 
  stronger wind gusts of 65 to 70 mph are quite possible on the 
  south side of Casper, including Outer Drive. 

* OBSERVED WIND GUSTS...68 MPH at 540 AM Wednesday and 65 MPH at
  1220 AM Thursday on Wyoming Boulevard on the southeast side of
  Casper. 

* IMPACTS...Travellers around the lower elevations of Natrona
  County will encounter strong and erratic wind gusts and areas of
  blowing snow with 8 to 10 inches of snow to blow around. 
  Visibilities could be sharply reduced at times during periods of
  strong wind gusts and blowing snow. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring. Sustained wind speeds of at least 40 mph or gusts
of 58 mph or more can lead to property damage.

&&

$$

WYZ003-252300-
/O.CON.KRIW.HW.A.0003.180126T0000Z-180126T1500Z/
Cody Foothills-
Including the cities of Cody and Meeteetse
153 AM MST Thu Jan 25 2018

...HIGH WIND WATCH REMAINS IN EFFECT FROM THIS AFTERNOON THROUGH
FRIDAY MORNING...

* TIMING...A cold front will blast across the area by sunset today
  with strong to high winds expected through the night into Friday
  morning. 

* WINDS...West 30 to 40 mph with gusts of 60 to 70 mph possible.

* IMPACTS...Travellers along highway 120 between Meeteetse and 
  Clark should be prepared for sudden and sharp cross-winds 
  Thursday night. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Watch means there is the potential for a hazardous
high wind event. Sustained winds of at least 40 mph...or gusts of
58 mph or stronger may occur. Continue to monitor the latest
forecasts.

&&

$$

611 
WWUS75 KRIW 251955
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
1255 PM MST Thu Jan 25 2018

...Strong to high winds will continue this afternoon from Jeffrey
City to Casper...

.Very strong to high winds will continue through this afternoon 
ahead of a strong cold front that will approach late in the day, 
from Jeffrey City to Casper.

WYZ003-252100-
/O.CAN.KRIW.HW.A.0003.180126T0000Z-180126T1500Z/
Cody Foothills-
Including the cities of Cody and Meeteetse
1255 PM MST Thu Jan 25 2018

...HIGH WIND WATCH IS CANCELLED...

The National Weather Service in Riverton has cancelled the High
Wind Watch. 

Strong west winds are still expected tonight but the widespread
potential for high winds has diminished. However, west winds will
still blow 25 to 35 mph with areas of gusts 45 to 55 mph
overnight.

$$

WYZ019-260000-
/O.CON.KRIW.HW.W.0004.000000T0000Z-180126T0000Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
1255 PM MST Thu Jan 25 2018

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

* TIMING...Very strong to high winds will continue through this 
  afternoon. 

* WINDS...Southwest 30 to 40 mph with gusts to 60 mph.

* IMPACTS...Travellers between Sweetwater Station and Muddy Gap
  will encounter strong and erratic wind gusts. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring. Sustained wind speeds of at least 40 mph or gusts
of 58 mph or more can lead to property damage.

&&

$$

WYZ020-260000-
/O.CON.KRIW.HW.W.0004.000000T0000Z-180126T0000Z/
Natrona County Lower Elevations-
Including the city of Casper
1255 PM MST Thu Jan 25 2018

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

* TIMING...Very strong to high winds will continue through this 
  afternoon. 

* WINDS...Southwest 30 to 40 mph with gusts to 60 mph. Even 
  stronger wind gusts of 65 to 70 mph are quite possible on the 
  south side of Casper, including Outer Drive. 

* IMPACTS...Travellers around the lower elevations of Natrona
  County will encounter strong and erratic wind gusts.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring. Sustained wind speeds of at least 40 mph or gusts
of 58 mph or more can lead to property damage.

&&

$$

Team Riverton

369 
WWUS75 KRIW 252332
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
432 PM MST Thu Jan 25 2018

WYZ019-260045-
/O.EXP.KRIW.HW.W.0004.000000T0000Z-180126T0000Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
432 PM MST Thu Jan 25 2018

...HIGH WIND WARNING WILL EXPIRE AT 5 PM MST THIS AFTERNOON...

Winds have weakened below high wind criteria. Thus the high wind 
warning will be allowed to expire at 5 PM.

$$

WYZ020-260045-
/O.EXP.KRIW.HW.W.0004.000000T0000Z-180126T0000Z/
Natrona County Lower Elevations-
Including the city of Casper
432 PM MST Thu Jan 25 2018

...HIGH WIND WARNING WILL EXPIRE AT 5 PM MST THIS AFTERNOON...

Winds have weakened below high wind criteria. Thus the high wind 
warning will be allowed to expire at 5 PM.

$$

Area Forecast Discussion
National Weather Service Riverton WY
1039 PM MST Tue Jan 23 2018

.SHORT TERM...(This evening through Friday)
Issued at 235 PM MST Tue Jan 23 2018

Shortwave ridge move in over the next 24-36 hours with steepening
low level inversions for the basins/valleys and increasing
foothill/mtn temps tonight and Wednesday. Weak ripple with
associated upglide in the nw corner this evening will bring a brief
bout of light snow/flurries, otherwise, I dry and quiet period
through Wednesday night. Besides the inversions, we'll have to worry
about increasing wind potential. The Cody Foothills are starting to
show a gap flow potential tonight with potential for some 45-55 mph
winds in the favored gap flow areas south of Clark along the highway
and just south of Cody. Added in some wind in these areas and will
likely issue an sps for gusty cross-wind potential. The wind
corridor will also see increasing wind later tonight into Wednesday
morning. The winds really get going then as the H7 winds back to sw
and increase to 50kts or so later Wednesday evening through much of
the day Thursday. Will issue a high wind watch for the two wind
corridor zones form Jeffrey City to Casper from 06z Thursday through
00z Friday. The approaching trough arrives in the west Thursday with
the front pushing east across the area through the day. This front
will help mix the basins out and bring a bout of strong west wind
with fropa (and potentially ahead of it). A quick shot of snow will
spread into the west Thursday morning and all but end by Thursday
evening. Amounts look to be sub-advisory for most if not the entire
area. Could be some 3-4 inch or so amounts around the favored Star
Valley locations but overall looks like a 1 to 3 inch type event for
most areas. The mountains will get a quick shot of 2 to 5 inches. As
the cold front blasts across the I80 corridor Thursday afternoon and
early evening, there will likely be a quick shot of snow to go with
the strong to high winds which may cause a few hours of travel
issues. Another system follows right behind this one with another
round of snow out west on Friday (and into the medium range period
but more on that below). Snowfall amounts of 3 to 6 inches in the
mountains and 1 to 3 inches across the lower elevations are a
reasonable expectation during the day Friday with more into the
weekend.

.LONG TERM...(Friday night through Tuesday)
Issued at 235 PM MST Tue Jan 23 2018

We could see some heavy snow showers with the Pacific cold front
early Friday evening, especially in the far northwest where negative
lifted indices are progged. Once we are in the cooler air, steadier
snowfall will occur in the far west later Saturday night once
isentropic lift gets underway. The troughpa will occur around 12Z
Saturday. The Euro is the outlier and the fastest model with the
troughpa occurring in the Great Plains at 12Z Sat. The Canadian is
the most amplified with timing somewhat similar to the GFS, although
the GFS brings the trough through in pieces. In any event, this
trough should blanket the far west with substantial snowfall totals
by Saturday evening given the broad area of isentropic lift expected
there after the fropa. The GFS has bulls eyes of an inch and a third
of precip in some areas with this weather system in the far west.
Areas east of the divide will remain mainly dry. Behind the exiting
trough, periods of light snow will continue over the far west
through Sunday morning as a direct feed off the Pacific from the
west northwest continues behind the trough axis. Then by Sunday
afternoon, warming and drying will take place as the next ridge
builds in from the west along with the jet stream shifting to the
north of the area. Sunday should also turn out to be quite windy
along the east slope of the Divide as well as along the southern
wind wind corridor with h7 winds increasing to 50 knots out of the
west. These winds will help usher in milder air. Temperatures will
warm up to the 40s east of the divide in areas that mix out Monday
and Tuesday. The next upstream Pacific trough will deliver more
snowfall to the far west later Monday night into Tuesday with the
Canadian, again, the most amplified with this trough. With the low
attempting to close off over the Southern Great Basin, we could see
another major snow over the CWA.

&&

.AVIATION...(For the 06Z TAFS through 06Z Wednesday night)
Issued at 1038 PM MST Tue Jan 23 2018

West of the Continental Divide...KJAC, KBPI, KPNA and KRKS

Some morning fog could occur across the western valleys as well as
some ceilings between 035-080 FT AGL Wednesday morning.
Otherwise, VFR conditions with sct-bkn high clouds will occur.
Also some LLWS will be present at times especially Wednesday
night.

East of the Continental Divide...KCPR, KCOD, KRIW, KLND, and KWRL

The main concern will be windy west to southwest wind and/or LLWS at
area terminals through the period. The exception will be in the
central basins where winds will be light. Otherwise, expect VFR
conditions with sct-bkn high clouds.

&&

.FIRE WEATHER...
Issued AT 235 PM MST Tue Jan 23 2018

Winds will be on the increase across the Jeffrey City to Casper area
later tonight and continue quite windy the next couple days. The
mountains and foothill areas will see warming temperatures and the
potential of gusty winds at times. The basin/valley inversions will
hold into Thursday morning before weakening as a cold front blasts
across the area Thursday.

&&

.RIW WATCHES/WARNINGS/ADVISORIES...
High Wind Watch from Wednesday evening through Thursday
afternoon for WYZ019-020.

&&

SHORT TERM...Skrbac
LONG TERM...Lipson
AVIATION...Murrell
FIRE WEATHER...Skrbac

Hazardous Weather Outlook
National Weather Service Riverton WY
1218 PM MST Tue Jan 23 2018

WYZ001>020-022>030-241200-
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-
1218 PM MST Tue Jan 23 2018

...High Wind Watch for the Wind Corridor from Jeffrey City to
Casper late Wednesday night through Thursday Afternoon...

This Hazardous Weather Outlook is for Western and Central
Wyoming.

.DAY ONE...Today and Tonight

Light snow will continue over the northwest mountains and
Yellowstone through the day today. Light snow will gradually end
tonight over Yellowstone. Snow amounts will range between 1 to 2
inches.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Wednesday Night and Thursday...Very strong winds and areas of
blowing snow expected across the area between Jeffrey City and
Casper. Strong winds will also blow across Sweetwater County on
Thursday with a short period of snow and blowing snow.

Thursday...A brief period of snowfall out west.

Friday through Sunday...Periods of snow out west with significant
accumulation quite possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.