High Wind Warning 6, NWS Riverton, WY

060 
WWUS75 KRIW 090830
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
130 AM MST Thu Feb 9 2017

...More Strong Winds Across Parts of Central Wyoming through
Friday morning...

.An storm approaching the west will bring increasing mid level
winds and a tightening pressure gradient. These winds will mix to
the surface and bring high winds to portions of central Wyoming.

WYZ003-092300-
/O.UPG.KRIW.HW.A.0005.170209T1800Z-170210T1500Z/
/O.EXB.KRIW.HW.W.0006.170209T1800Z-170210T1500Z/
Cody Foothills-
Including the cities of Cody and Meeteetse
130 AM MST Thu Feb 9 2017

...HIGH WIND WARNING IN EFFECT FROM 11 AM THIS MORNING TO 8 AM
MST FRIDAY...

The National Weather Service in Riverton has issued a High Wind
Warning, which is in effect from 11 AM this morning to 8 AM MST
Friday. The High Wind Watch is no longer in effect. 

* TIMING...High winds may develop across the area by this morning 
and continue at times through Friday morning. The potential 
exists with this storm for extremely high winds so stay tuned 
for further statements on this potentially dangerous high wind 
situation. 

* WINDS...West 30 to 40 mph with gusts 60 to 70 mph. Some areas 
  near the foothills...especially around Clark could gust over 
  100 mph. 

* IMPACTS...Very dangerous crosswinds along highway 120 between 
  Cody and Clark will likely increase the blowover risk 
  especially for high profile and lightweight vehicles. 
  Residents should secure any loose items that could blow away 
  or become dangerous flying objects during extreme 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.

&&

$$

WYZ019-092300-
/O.CON.KRIW.HW.W.0006.000000T0000Z-170210T1200Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
130 AM MST Thu Feb 9 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY...

* TIMING...Winds will continue to increase and become very strong
  through tonight.

* WINDS...Southwest 30 to 40 mph with gusts 60 to 70 mph.

* IMPACTS...Travellers over Beaver Rim and between Jeffrey 
  City...Muddy Gap and Pathfinder should be alert for very 
  strong and erratic wind gusts. Blowover risk will increase for 
  high profile and lightweight vehicles. 

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.

&&

$$

WYZ020-092300-
/O.CON.KRIW.HW.W.0006.170209T0900Z-170210T1200Z/
Natrona County Lower Elevations-
Including the city of Casper
130 AM MST Thu Feb 9 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY...

* TIMING...Southwest winds will continue to increase this morning
  with high winds expected through tonight. 

* WINDS...Southwest 30 to 40 mph with gusts over 60 mph. The 
  south side of Casper near Outer Drive may see gusts over 70 
  mph. 

* IMPACTS...Travellers along Interstate 25...Outer Drive south of
  Casper and other area highways should expect very strong and
  erratic wind gusts. Blowover risk will increase for high 
  profile and lightweight vehicles. 

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.

&&

$$

WYZ018-092300-
/O.CON.KRIW.HW.A.0005.170210T0000Z-170210T1200Z/
Lander Foothills-
Including the city of Lander
130 AM MST Thu Feb 9 2017

...HIGH WIND WATCH REMAINS IN EFFECT FROM THIS AFTERNOON THROUGH
LATE TONIGHT...

* TIMING...High winds may develop across the Lander Foothills 
  after sunset Thursday and continue through the night. 

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

* IMPACTS...Travellers between Lander and Fort Washakie should 
  be alert for very strong crosswinds. The risk of blowover will 
  increase for high profile and lightweight vehicles. 

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.

&&

$$

197 
WWUS75 KRIW 091856
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
1156 AM MST Thu Feb 9 2017

...More Strong Winds Across Parts of Central Wyoming through
Friday morning...

.An storm approaching the west will bring increasing mid level
winds and a tightening pressure gradient. These winds will mix to
the surface and bring high winds to portions of central Wyoming.

WYZ018-100600-
/O.UPG.KRIW.HW.A.0005.170210T0000Z-170210T1200Z/
/O.EXB.KRIW.HW.W.0006.170210T0000Z-170210T1200Z/
Lander Foothills-
Including the city of Lander
1156 AM MST Thu Feb 9 2017

...HIGH WIND WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 AM
MST FRIDAY...

The National Weather Service in Riverton has issued a High Wind
Warning, which is in effect from 5 PM this afternoon to 5 AM MST
Friday. The High Wind Watch is no longer in effect. 

* TIMING...Very strong west winds just above the Lander Foothills
  will likely mix down into the Lander and Fort Washakie areas for
  at least a couple hours tonight. Be alert for calm periods
  followed by sudden very strong and erratic wind gusts overnight.
  The most likely period will be later this evening into the early
  morning hours.

* WINDS...Southwest 30 to 40 mph with gusts 60 to 70 mph at times.


* IMPACTS...Travellers between Lander and Fort Washakie should be
  alert for very strong and erratic crosswinds. The risk of
  blowover will increase for high profile and lightweight vehicles.

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.

&&

$$

WYZ019-100600-
/O.CON.KRIW.HW.W.0006.000000T0000Z-170210T1200Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
1156 AM MST Thu Feb 9 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY...

* TIMING...Winds will continue through tonight. 

* WINDS...Southwest 30 to 40 mph with gusts 60 to 70 mph.

* IMPACTS...Travellers over Beaver Rim and between Jeffrey 
  City...Muddy Gap and Pathfinder should be alert for very 
  strong and erratic wind gusts. Blowover risk will increase for 
  high profile and lightweight vehicles. 

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.

&&

$$

WYZ020-100600-
/O.CON.KRIW.HW.W.0006.000000T0000Z-170210T1200Z/
Natrona County Lower Elevations-
Including the city of Casper
1156 AM MST Thu Feb 9 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY...

* TIMING...Southwest winds will continue to increase this 
  morning with high winds expected through tonight. 

* WINDS...Southwest 30 to 40 mph with gusts over 60 mph. The south
  side of Casper near Outer Drive will see gusts 70 to 80 mph. 

* IMPACTS...Travellers along Interstate 25...Outer Drive south 
  of Casper and other area highways should expect very strong 
  and erratic wind gusts. Blowover risk will increase for high 
  profile and lightweight vehicles. 

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.

&&

$$

WYZ003-100600-
/O.CON.KRIW.HW.W.0006.000000T0000Z-170210T1500Z/
Cody Foothills-
Including the cities of Cody and Meeteetse
1156 AM MST Thu Feb 9 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 8 AM MST FRIDAY...

* TIMING...High winds will develop across today and continue at
  times through Friday morning. The potential exists with this
  storm for extremely high winds so stay tuned for further 
  statements on this potentially dangerous high wind situation.

* WINDS...West 30 to 40 mph with gusts 60 to 70 mph. Some areas 
  near the foothills...especially around Clark could gust over 
  100 mph. 

* IMPACTS...Very dangerous crosswinds along highway 120 between 
  Cody and Clark will likely increase the blowover risk 
  especially for high profile and lightweight vehicles. 
  Residents should secure any loose items that could blow away 
  or become dangerous flying objects during extreme 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.

&&

$$

492 
WWUS75 KRIW 100032
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
532 PM MST Thu Feb 9 2017

...Strong Winds Continue Across Parts of Central Wyoming through 
Friday morning...

.Strong mid-level winds and a tight pressure gradient will result
in the continuation of high wind across portions of central
Wyoming. 

WYZ019-101200-
/O.CON.KRIW.HW.W.0006.000000T0000Z-170210T1200Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
532 PM MST Thu Feb 9 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY...

* TIMING...Winds will continue through tonight.

* WINDS...Southwest 30 to 40 mph with gusts 60 to 70 mph.

* IMPACTS...Travellers over Beaver Rim and between Jeffrey
  City...Muddy Gap and Pathfinder should be alert for very strong
  and erratic wind gusts. Extreme Blowover risk for high profile
  and lightweight vehicles. 

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.

&&

$$

WYZ020-101200-
/O.CON.KRIW.HW.W.0006.000000T0000Z-170210T1200Z/
Natrona County Lower Elevations-
Including the city of Casper
532 PM MST Thu Feb 9 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY...

* TIMING...Strong southwest winds will continue through the night.

* WINDS...Southwest 30 to 40 mph with gusts over 60 mph. The south
  side of Casper near Outer Drive will see gusts 70 to 80 mph. At
  216 AM Thursday morning, Outer Drive on the south side of Casper
  measured a 67 mph wind gust. 

* IMPACTS...Travellers along Interstate 25...Outer Drive south 
  of Casper and other area highways should expect very strong 
  and erratic wind gusts. Blowover risk will increase for high 
  profile and lightweight vehicles. 

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.

&&

$$

WYZ003-101300-
/O.CON.KRIW.HW.W.0006.000000T0000Z-170210T1500Z/
Cody Foothills-
Including the cities of Cody and Meeteetse
532 PM MST Thu Feb 9 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 8 AM MST FRIDAY...

* TIMING...High to damaging winds will continue through early
  Friday morning. 

* WINDS...West 30 to 40 mph with gusts 60 to 70 mph. Some areas
  near the foothills, especially around Clark could gust over 100
  mph. At 320 PM, an 118 mph wind gust occurred at Clark. An 87
  mph wind gust occurred along highway 120, about 8 miles south of
  Clark at 3 pm.

* IMPACTS...Extreme blowover risk between Cody and Clark due to
  dangerous crosswind. 

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.

&&

$$

WYZ018-101200-
/O.CON.KRIW.HW.W.0006.000000T0000Z-170210T1200Z/
Lander Foothills-
Including the city of Lander
532 PM MST Thu Feb 9 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY...

* TIMING...Very strong west winds just above the Lander 
  Foothills will likely mix down into the Lander and Fort 
  Washakie areas for at least a couple hours tonight. Be alert 
  for calm periods followed by sudden very strong and erratic 
  wind gusts overnight. The most likely period will be later 
  this evening into the early morning hours. 

* WINDS...Southwest 30 to 40 mph with gusts 60 to 70 mph at 
  times.

* IMPACTS...Travellers between Lander and Fort Washakie should 
  be alert for very strong and erratic crosswinds. The risk of 
  blowover will increase for high profile and lightweight 
  vehicles. 

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/21

732 
WWUS75 KRIW 100210
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
710 PM MST Thu Feb 9 2017

...Strong Winds Continue Across Parts of Central Wyoming through
Friday morning...

.Strong mid-level winds and a tight pressure gradient will result
in the continuation of high wind across portions of central
Wyoming.

WYZ017-101015-
/O.EXA.KRIW.HW.W.0006.000000T0000Z-170210T1200Z/
Wind River Basin-
Including the cities of Riverton and Shoshoni
710 PM MST Thu Feb 9 2017

...HIGH WIND WARNING IN EFFECT UNTIL 5 AM MST FRIDAY...

The National Weather Service in Riverton has issued a High Wind
Warning, which is in effect until 5 AM MST Friday. 

* TIMING...Very strong west winds just above the surface will mix
  down at times across the western half of the Wind River Basin
  tonight. Be alert for calm periods followed by sudden very strong
  and erratic wind gusts overnight. The most likely period will 
  be later this evening into the early morning hours. 

* WINDS...Southwest 30 to 40 mph with gusts 60 to 70 mph at times
  in the Hudson and Ethete areas. Much lighter winds area 
expected in the Shoshoni and Riverton areas. At 646 pm, a sensor
just northwest of Hudson measured a wind gust of 73 mph. 

* IMPACTS...Travellers across the western half of the Wind River
  Basin should be alert for very strong and erratic crosswinds.
  The risk of blowover will increase for high profile and
  lightweight vehicles. 

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.

&&

$$

WYZ019-101015-
/O.CON.KRIW.HW.W.0006.000000T0000Z-170210T1200Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
710 PM MST Thu Feb 9 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY...

* TIMING...High winds will continue through tonight.

* WINDS...Southwest 30 to 40 mph with gusts 60 to 70 mph.

* IMPACTS...Travellers over Beaver Rim and between Jeffrey 
  City...Muddy Gap and Pathfinder should be alert for very 
  strong and erratic wind gusts. Extreme Blowover risk for high 
  profile and lightweight vehicles. 

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.

&&

$$

WYZ020-101015-
/O.CON.KRIW.HW.W.0006.000000T0000Z-170210T1200Z/
Natrona County Lower Elevations-
Including the city of Casper
710 PM MST Thu Feb 9 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY...

* TIMING...Strong southwest winds will continue through the 
  night.

* WINDS...Southwest 30 to 40 mph with gusts over 60 mph. The 
  south side of Casper near Outer Drive will see gusts 70 to 80 
  mph. At 216 AM Thursday morning, Outer Drive on the south side 
  of Casper measured a 67 mph wind gust. 

* IMPACTS...Travellers along Interstate 25...Outer Drive south 
  of Casper and other area highways should expect very strong 
  and erratic wind gusts. Blowover risk will increase for high 
  profile and lightweight vehicles. 

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.

&&

$$

WYZ003-101015-
/O.CON.KRIW.HW.W.0006.000000T0000Z-170210T1500Z/
Cody Foothills-
Including the cities of Cody and Meeteetse
710 PM MST Thu Feb 9 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 8 AM MST FRIDAY...

* TIMING...High to damaging winds will continue through early 
  Friday morning. 

* WINDS...West 30 to 40 mph with gusts 60 to 70 mph. Some areas 
  near the foothills, especially around Clark could gust over 
  100 mph. At 320 PM, an 118 mph wind gust occurred at Clark. An 
  87 mph wind gust occurred along highway 120, about 8 miles 
  south of Clark at 3 pm. 

* IMPACTS...Extreme blowover risk between Cody and Clark due to 
  dangerous crosswind. 

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.

&&

$$

WYZ018-101015-
/O.CON.KRIW.HW.W.0006.000000T0000Z-170210T1200Z/
Lander Foothills-
Including the city of Lander
710 PM MST Thu Feb 9 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY...

* TIMING...Very strong west winds just above the Lander Foothills
  will mix down into the Lander and Fort Washakie areas at times
  tonight. Be alert for calm periods followed by sudden very
  strong and erratic wind gusts overnight. The most likely period
  will be later this evening into the early morning hours. 

* WINDS...Southwest 30 to 40 mph with gusts 60 to 70 mph at 
  times. 

* IMPACTS...Travellers between Lander and Fort Washakie should 
  be alert for very strong and erratic crosswinds. The risk of 
  blowover will increase for high profile and lightweight 
  vehicles. 

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.

&&

$$

015 
WWUS75 KRIW 100939
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
239 AM MST Fri Feb 10 2017

...Strong Winds Continue Across Parts of Central and Northern 
Wyoming early this morning...

.Strong mid-level winds and a tight pressure gradient will result
in the continuation of high wind across portions of central and
northern Wyoming.

WYZ019-101200-
/O.CON.KRIW.HW.W.0006.000000T0000Z-170210T1200Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
239 AM MST Fri Feb 10 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 AM MST EARLY THIS
MORNING...

* TIMING...High winds will continue this morning.

* WINDS...Southwest 30 to 40 mph with gusts 50 to 70 mph.

* IMPACTS...Travellers over Beaver Rim and between Jeffrey 
  City...Muddy Gap and Pathfinder should be alert for very 
  strong and erratic wind gusts. Extreme Blowover risk for high 
  profile and lightweight vehicles. 

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.

&&

$$

WYZ020-101200-
/O.CON.KRIW.HW.W.0006.000000T0000Z-170210T1200Z/
Natrona County Lower Elevations-
Including the city of Casper
239 AM MST Fri Feb 10 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 AM MST EARLY THIS
MORNING...

* TIMING...Strong southwest winds will continue this morning. 

* WINDS...Southwest 30 to 40 mph with gusts 50 to 60 mph.  

* IMPACTS...Travellers along Interstate 25...Outer Drive south 
  of Casper and other area highways should expect very strong 
  and erratic wind gusts. Blowover risk will increase for high 
  profile and lightweight vehicles. 

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.

&&

$$

WYZ003-101200-
/O.CON.KRIW.HW.W.0006.000000T0000Z-170210T1500Z/
Cody Foothills-
Including the cities of Cody and Meeteetse
239 AM MST Fri Feb 10 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 8 AM MST THIS
MORNING...

* TIMING...High winds will continue through early this morning.

* WINDS...West 30 to 40 mph with gusts 50 to 60 mph. Some areas
  near the foothills, especially around Clark could gust over 70
  mph. 

* IMPACTS...Extreme blowover risk between Cody and Clark due to 
  dangerous crosswind. 

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.

&&

$$

WYZ017-018-101200-
/O.CON.KRIW.HW.W.0006.000000T0000Z-170210T1200Z/
Wind River Basin-Lander Foothills-
Including the cities of Riverton, Shoshoni, and Lander
239 AM MST Fri Feb 10 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 AM MST EARLY THIS
MORNING...

* TIMING...Strong west winds just above the Lander Foothills will
  mix down into the Lander and Fort Washakie areas at times
  tonight. Be alert for calm periods followed by sudden very
  strong and erratic wind gusts this morning. 

* WINDS...Southwest 30 to 40 mph with gusts 60 to 70 mph at 
  times. 

* IMPACTS...Travellers between Lander and Fort Washakie should 
  be alert for very strong and erratic crosswinds. The risk of 
  blowover will increase for high profile and lightweight 
  vehicles. 

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.

&&

$$

318 
WWUS75 KRIW 101201
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
501 AM MST Fri Feb 10 2017

...Strong Winds Continue Across Parts of Northern Wyoming early 
this morning...

WYZ019-101315-
/O.EXP.KRIW.HW.W.0006.000000T0000Z-170210T1200Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
501 AM MST Fri Feb 10 2017

...HIGH WIND WARNING WILL EXPIRE AT 5 AM MST EARLY THIS MORNING...

A southwest wind of 25 to 35 mph with gusts 45 to 55 mph will
occur today in these areas. The threat for widespread high wind
conditions has ended and thus the warning will be allowed to
expire at 5 AM MST.

$$

WYZ020-101315-
/O.EXP.KRIW.HW.W.0006.000000T0000Z-170210T1200Z/
Natrona County Lower Elevations-
Including the city of Casper
501 AM MST Fri Feb 10 2017

...HIGH WIND WARNING WILL EXPIRE AT 5 AM MST EARLY THIS MORNING...

A southwest wind of 20 to 30 mph with gusts 35 to 45 mph will 
occur today in these areas. The threat for widespread high wind 
conditions has ended and thus the warning will be allowed to 
expire at 5 AM MST.

$$

WYZ017-018-101315-
/O.EXP.KRIW.HW.W.0006.000000T0000Z-170210T1200Z/
Wind River Basin-Lander Foothills-
Including the cities of Riverton, Shoshoni, and Lander
501 AM MST Fri Feb 10 2017

...HIGH WIND WARNING WILL EXPIRE AT 5 AM MST EARLY THIS MORNING...

A west to southwest wind of 15 to 25 mph with gusts 30 to 35 mph 
will occur this morning...then gradually decrease in the
afternoon. The threat for widespread high wind conditions has 
ended and thus the warning will be allowed to expire at 5 AM MST.

$$

WYZ003-101500-
/O.CON.KRIW.HW.W.0006.000000T0000Z-170210T1500Z/
Cody Foothills-
Including the cities of Cody and Meeteetse
501 AM MST Fri Feb 10 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 8 AM MST THIS
MORNING...

* TIMING...High winds will continue through early this morning.

* WINDS...West 30 to 40 mph with gusts 50 to 60 mph. Some areas 
  near the foothills, especially around Clark could gust over 70 
  mph. 

* IMPACTS...Extreme blowover risk between Cody and Clark due to 
  dangerous crosswind. 

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.

&&

$$

845 
WWUS75 KRIW 101447
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
747 AM MST Fri Feb 10 2017

...Decreasing wind in Park County...

.Wind will continue to decrease in Park County.
Widespread high wind is no longer expected.

WYZ003-101600-
/O.EXP.KRIW.HW.W.0006.000000T0000Z-170210T1500Z/
Cody Foothills-
Including the cities of Cody and Meeteetse
747 AM MST Fri Feb 10 2017

...HIGH WIND WARNING WILL EXPIRE AT 8 AM MST THIS MORNING...

Wind will continue to decrease in Park County.  Widespread high 
wind is no longer expected.  Wind gusts of 50 mph will occur
around Clark.

$$

Area Forecast Discussion
National Weather Service Riverton WY
1037 AM MST Wed Feb 8 2017

.SHORT TERM...Wednesday through Friday night

We will again divide the discussion into West and East of the Divide
portions.

West of the Divide...

The active weather will be taking a bit of a lunch break over the
next 12 to 18 hours or so as some flat riding moves across the area.
There will still be some light snow but nothing of consequence.
However, another system will move in from the west for this evening
and spread another round of precipitation into the area. Notice how
I said precipitation, not snow, since there will be something a bit
different with this system as opposed the previous couple.

Temperatures will likely start of cold enough for snow everywhere.
However, this system is significantly warmer than the previous few.
Warmer air will move in through the day on Thursday with 700
millibar temperatures climbing to as warm as 0 degrees Celsius in
the south to around minus 1 in the Jackson Valley. This would allow
snow levels to rise as high as 8000 or 8500 feet. This would allow
the Star Valley as well as most of the Jackson Valley to change over
to rain for much of Thursday. This also looks to be a wet system
with around a quarter of an inch or QPF per six hours. As a result,
there could be some rapid snowmelt and possible minor flooding as
the deep snowpack melts. As a result, we will hoist a flood watch
for the Jackson and Star Valleys. In the mountains, it will remain
all snow, although a heavy and wet snow that many areas will once
again be measuring in feet. We will hoist a winter storm watch over
the same areas the previous event as a result. If there is one minor
good thing, the jet does not look quite as strong so any wind should
not be as strong as yesterday's storm. Colder air will work back in
for later Thursday night and into Friday and change all of the
precipitation back over to snow for all areas. On Friday, snow
should taper off from north to south although a wave riding along a
front could keep some precipitation going across Sweetwater County.

East of the Divide...

We had a bit of surprise last night as the impressive jet really
fired up the upper level divergence. We actually had some brief
sleet  and  freezing rain last night, unusual for this neck of the
woods as the low levels warmed up. In addition, we had more of those
pain in the neck snow bands that popped up in the left front quad of
the jet. With the aforementioned jet moving away to the east the
area should be moving into the area of downward momentum by the
morning so the snow should shut off by that point. In addition, the
windy conditions should slowly subside. In a few areas with the
warm air over the cold and the recent moisture the fog monster
has reared it's ugly head though so we added a bit of patchy fog
in spots. But all in all it should be a much quieter day with near
normal temperatures, moderate winds and mainly dry conditions with
the possible exception of the Big Horn  Mountains where a few snow
showers will linger. Mainly dry weather should last through the
night.

Thursday looks dry as well. However, with the system moving into the
west we will once again see a tightening pressure gradient. This
will bring breezy to windy conditions across many areas. This will
be especially so for the southwestern wind corridor from Rock
Springs to Casper. As a result, we will probably need more high wind
highlights for that vicinity. The other big story will be the
temperatures as most areas will mix out. It does look rather mild
with most places rising into the 40s and some areas in the 50s.
Still some uncertainty for Friday as the trough and front move into
the area. There are some differences but both the NAM and GFS keep a
majority of the precipitation West of the Divide. The GFS does creep
precipitation close to the Casper area later Friday night however
with a bit of right rear quadrant energy with a jet going by to the
north so something to keep an eye on.

.LONG TERM...Saturday Through Wednesday

Synopsis...A Canadian cold front will plunge south across the
area on Saturday spreading accompanied by low clouds, areas of
light snow, gusty north wind and cooler temperatures. High
pressure both aloft and at the surface will build in Saturday
night through Wednesday, bringing mostly clear skies, and
seasonably mild daytime temperatures to most areas.

Discussion...Synoptic pattern Saturday morning shows split trough
across the Rockies and southwest U.S. with northern stream shortwave
over Montana, and southern stream upper low lagging across southern
California.  Northern stream shortwave will push a cold front south
across the area Saturday.  GFS shows more separation between the
split systems and is more stingy with QPF across Wyoming than ECMWF.
Not ready to buy into the GFS recent drier trend with NNE low level
flow, leaving at least chance PoPs for most areas across the north
and central Saturday afternoon.  However, most snowfall amounts
should be light, sub-advisory stuff, with the better moisture
remaining to our south.  Snowfall is expected to shutoff NW-SE
Saturday night as upper ridge folds across the northern Rockies. GFS
and ECMWF show varying solutions on weak perturbations moving
through the ridge, GFS overshooting cutoff SW low, dropping a
shortwave into the northern High Plains on Monday night, while the
ECMWF shows shortwave digging down west of the Divide behind a more
progressive SW low.  Any precipitation with these weak systems
should be confined to their immediate vicinity, and have mostly
disregarded any impacts through the big picture of an upper ridge
that will dominate our weather through at least Thursday of next
week.  At least 5 days (Sun-Thur) of dry, seasonably mild weather
and generally light wind is expected across all of west and central
Wyoming. It has been awhile since we could say that.

&&

.AVIATION.../18Z ISSUANCE/

West of the Divide...KBPI/KJAC/KPNA/KRKS Terminals

Snow will increase or redevelop across the west tonight as a new
major storm system begins to move into the area. This storm system
has abnormally warm air with it and the far western valleys may
see snow change to rain later tonight and continue through
Thursday. Areas of freezing rain may develop by morning in the
Upper Green River basin and far southwest part of the state. Wind
shear will remain a concern over and near the mountains in the
west, including most TAF sites. Mountains will remain obscured and
cigs will lower later today from marginal MVFR to IFR in the far
west due to snow and borderline VFR/MVFR around KPNA/KBPI to
mainly MVFR later tonight. KRKS will generally be VFR but there
will be areas of light snow showers or mixed rain and snow around
later this evening.

East of the Divide...KCOD/KCPR/KLND/KRIW/KWRL Terminals

A cold front will be lifting northward today and will be replaced
by more areas of gusty to strong southwest wind which will
increase tonight through Thursday. Wind shear will remain a
concern around the mountains, especially KLND and KCOD. Patchy fog
may develop around KWRL Thursday morning.

&&

.FIRE WEATHER...

There will be a lull in the active weather today as a small area of
high pressure moves over the area. However, another system moving
from the west will bring more snow to the western mountains starting
tonight and continuing into Friday. This will be a warmer system
with the western Valleys likely changing to rain for much of
Thursday and possibly causing rapid melting of the snow. Meanwhile,
mainly dry conditions will continue east of the Divide. Another
round of high wind is likely from Rock Springs through Casper on
Thursday however.
&&

.RIW WATCHES/WARNINGS/ADVISORIES...
Flood Watch from late tonight through late Thursday night for
WYZ013-023.

Winter Storm Watch from this afternoon through Friday afternoon
for WYZ001-002-012-014-015-024-025.

&&

SHORT TERM...HATTINGS
LONG TERM...AEM
AVIATION...PS
FIRE WEATHER...Team Riverton

Hazardous Weather Outlook
National Weather Service Riverton WY
307 AM MST Wed Feb 8 2017

WYZ001>020-022>030-091100-
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-
307 AM MST Wed Feb 8 2017

...Winter Storm Watch for the western mountains from tonight
through Friday...

...Flood watch for the Star and Jackson valleys Thursday and
Thursday night...

.DAY ONE...TODAY AND TONIGHT

Snow will spread back into the western mountains tonight. Please
see Winter Weather Products and forecasts for details.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

Thursday and Friday...moderate to heavy precipitation possible
across western Wyoming. Snow levels rising to near 8000 feet which
could increase avalanche danger and bring possible flooding to the
lower elevations.

Thursday and Thursday night...High winds again possible across
Natrona County and southern Fremont County.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report snowfall amounts and any damage
associated with the strong wind. Thank you.