High Wind Warning 16, NWS Riverton, WY

365 
WWUS75 KRIW 122103
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
303 PM MDT Mon Jun 12 2017

...High winds likely over South and Southwest Wyoming this 
afternoon and evening...

.As a strong trough and cold front will push across the region
late this afternoon and evening with high winds over southwest
Wyoming into the Lander Foothills through this evening. Winds are
expected to diminish by mid to late evening. 

WYZ025>027-130300-
/O.EXA.KRIW.HW.W.0016.000000T0000Z-170613T0300Z/
Upper Green River Basin Foothills-Upper Green River Basin-
South Lincoln County-
Including the cities of Pinedale, La Barge, Big Piney, Farson, 
Kemmerer, and Cokeville
303 PM MDT Mon Jun 12 2017

...HIGH WIND WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING...

The National Weather Service in Riverton has issued a High Wind
Warning, which is in effect until 9 PM MDT this evening. 

* TIMING...High winds will continue through this evening. 

* WINDS...South southwest wind 35 to 40 mph with gusts to 60 mph
  will switch to west late this afternoon and evening. Shower
  activity will locally enhance winds.

* IMPACTS...Wind gusts will significantly increase the blow over
  threat for trucks pulling light weight and high profile
  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.

&&

$$

WYZ018-130300-
/O.EXA.KRIW.HW.W.0016.000000T0000Z-170613T0300Z/
Lander Foothills-
Including the city of Lander
303 PM MDT Mon Jun 12 2017

...HIGH WIND WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING...

The National Weather Service in Riverton has issued a High Wind
Warning, which is in effect until 9 PM MDT this evening. 

* TIMING...High winds are expected to 2 to 4 hours this evening as
  a strong cold front moves across the area. 

* WINDS...Southwest wind 30 to 40 mph with gusts to 60 mph. Any
  showers coming off the Wind River Mountains this evening could 
  locally enhance winds to near 60 mph.

* IMPACTS...Wind gusts will significantly increase the blow over
  threat for trucks pulling light weight and high profile
  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.

&&

$$

WYZ019-028>030-130300-
/O.CON.KRIW.HW.W.0016.000000T0000Z-170613T0300Z/
Green Mountains and Rattlesnake Range-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
Including the cities of Jeffrey City, Rock Springs, Green River, 
and Wamsutter
303 PM MDT Mon Jun 12 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS
EVENING...

* TIMING...High winds will continue through this evening. 

* WINDS...South southwest wind 35 to 40 mph with gusts to 60 mph.

* IMPACTS...Wind gusts will significantly increase the blow over 
  threat for trucks pulling light weight and high profile 
  vehicles, including Interstate 80. Also, outdoor burning is 
  not recommended. 

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

570 
WWUS75 KRIW 130104
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
704 PM MDT Mon Jun 12 2017

...High winds likely over South and Southwest Wyoming this
afternoon and evening...

.As a strong trough and cold front will push across the region
this evening with high winds over southwest and central Wyoming
through this evening. Winds are expected to diminish by late 
evening.

WYZ017-130300-
/O.EXA.KRIW.HW.W.0016.000000T0000Z-170613T0300Z/
Wind River Basin-
Including the cities of Riverton and Shoshoni
704 PM MDT Mon Jun 12 2017

...HIGH WIND WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING...

The National Weather Service in Riverton has issued a High Wind
Warning, which is in effect until 9 PM MDT this evening. 

* TIMING...High winds will continue through this evening.

* WINDS...Southwest wind 35 to 40 mph with gusts to around 70 
  mph. 

* IMPACTS...Wind gusts will significantly increase the blow over 
  threat for trucks pulling light weight and high profile 
  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.

&&

$$

WYZ019-028>030-130300-
/O.CON.KRIW.HW.W.0016.000000T0000Z-170613T0300Z/
Green Mountains and Rattlesnake Range-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
Including the cities of Jeffrey City, Rock Springs, Green River, 
and Wamsutter
704 PM MDT Mon Jun 12 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS
EVENING...

* TIMING...High winds will continue through this evening.

* WINDS...South southwest wind 35 to 40 mph with gusts to 60 mph.

* IMPACTS...Wind gusts will significantly increase the blow over 
  threat for trucks pulling light weight and high profile 
  vehicles, including Interstate 80. Also, outdoor burning is 
  not recommended. 

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.

&&

$$

WYZ025>027-130300-
/O.CON.KRIW.HW.W.0016.000000T0000Z-170613T0300Z/
Upper Green River Basin Foothills-Upper Green River Basin-
South Lincoln County-
Including the cities of Pinedale, La Barge, Big Piney, Farson, 
Kemmerer, and Cokeville
704 PM MDT Mon Jun 12 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS
EVENING...

* TIMING...High winds will continue through this evening.

* WINDS...South southwest wind 35 to 40 mph with gusts to 60 mph 
  will switch to west late this afternoon and evening. Shower 
  activity will locally enhance winds. 

* IMPACTS...Wind gusts will significantly increase the blow over 
  threat for trucks pulling light weight and high profile 
  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.

&&

$$

WYZ018-130300-
/O.CON.KRIW.HW.W.0016.000000T0000Z-170613T0300Z/
Lander Foothills-
Including the city of Lander
704 PM MDT Mon Jun 12 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS
EVENING...

* TIMING...High winds are expected to 2 to 4 hours this evening 
  as a strong cold front moves across the area. 

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

* IMPACTS...Wind gusts will significantly increase the blow over 
  threat for trucks pulling light weight and high profile 
  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.

&&

$$

344 
WWUS75 KRIW 130202
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
802 PM MDT Mon Jun 12 2017

...High Winds over the Wind River Basin through 9 PM...

.High wind across the Wind River Basin will gradually subside
through 9 PM.

WYZ025>030-130315-
/O.CAN.KRIW.HW.W.0016.000000T0000Z-170613T0300Z/
Upper Green River Basin Foothills-Upper Green River Basin-
South Lincoln County-Rock Springs and Green River-Flaming Gorge-
East Sweetwater County-
Including the cities of Pinedale, La Barge, Big Piney, Farson, 
Kemmerer, Cokeville, Rock Springs, Green River, and Wamsutter
802 PM MDT Mon Jun 12 2017

...HIGH WIND WARNING IS CANCELLED...

The National Weather Service in Riverton has cancelled the High
Wind Warning. The high wind across Sweetwater and Upper Green
River Basin have diminished.

$$

WYZ019-130315-
/O.CON.KRIW.HW.W.0016.000000T0000Z-170613T0300Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
802 PM MDT Mon Jun 12 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS
EVENING...

* TIMING...High winds over the Wind River Basin and southeast
  Fremont County will gradually diminish through 9 PM.

* WINDS...west to southwest wind 30 to 40 mph with gusts to 60 
  mph.

* IMPACTS...Wind gusts will significantly increase the blow over
  threat for trucks pulling light weight and high profile
  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.

&&

$$

WYZ017-018-130315-
/O.CON.KRIW.HW.W.0016.000000T0000Z-170613T0300Z/
Wind River Basin-Lander Foothills-
Including the cities of Riverton, Shoshoni, and Lander
802 PM MDT Mon Jun 12 2017

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS
EVENING...

* TIMING...High winds are expected to continue to diminish in
  strength through 9 PM. 

* WINDS...Southwest wind 30 to 40 mph with gusts to 60 mph. A gust
  of 76 mph was observed at the Lander Airport at 545 PM.

* IMPACTS...Wind gusts will significantly increase the blow over
  threat for trucks pulling light weight and high profile vehicles
  and could cause power outages. 

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.

&&

$$

21

850 
WWUS75 KRIW 130256
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
856 PM MDT Mon Jun 12 2017

WYZ019-130400-
/O.EXP.KRIW.HW.W.0016.000000T0000Z-170613T0300Z/
Green Mountains and Rattlesnake Range-
Including the city of Jeffrey City
856 PM MDT Mon Jun 12 2017

...HIGH WIND WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING...

High wind has weakened, and the high wind warning will be allowed
to expire at 9 PM.

$$

WYZ017-018-130400-
/O.EXP.KRIW.HW.W.0016.000000T0000Z-170613T0300Z/
Wind River Basin-Lander Foothills-
Including the cities of Riverton, Shoshoni, and Lander
856 PM MDT Mon Jun 12 2017

...HIGH WIND WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING...

High wind has weakened, and the high wind warning will be allowed
to expire at 9 PM.

$$

21

Area Forecast Discussion
National Weather Service Riverton WY
155 PM MDT Sun Jun 11 2017

.SHORT TERM...(This evening through Wednesday)
Issued at 155 PM MDT Sun Jun 11 2017

A large unseasonably strong low pressure trough over the pacific
northwest will slowly approach the area with increasing showers
across the western and northern mountains with embedded isolated
thunderstorms possible in the afternoon and evening hours.  Snow
levels will lower to 8500 feet tonight, and 7500 feet on Monday
night. As colder air moves in stronger winds will move in as well.
A high wind watch has been issued for Sweetwater, fremont and
Natrona counties from noon Monday through 9 pm mdt Monday evening.
Mountain winds of 30 to 40 mph can be expected increasing to 40
to 45 mph by Monday afternoon with 35 to 45 mph winds across
Sweetwater, Fremont and Natrona counties. Snow accumulations above
8800 feet of 10 to 15 inches can be expected in the Tetons and
Gros Ventre mountains with 5 to 10 inches in the northern and
central mountains by late Tuesday. Wednesday will see drying
with some warming and brisk northwest winds.

.LONG TERM...(wednesday night through Sunday)
Issued at 155 PM MDT Sun Jun 11 2017

The effects of the exiting low pressure center will continue to
diminish Wednesday night as the low pressure center moves
northeast across Saskatchewan with continued diminishing winds
and making way for summer to begin several days before the summer
solstice. Northwest winds will continue to diminish and back to a
more westerly direction. Only lingering isold t storms are
expected in the north and east zones Wednesday evening. For
Thursday, a flat ridge of high pressure will be building in from
the west with the jet shifting to the north and a 1019mb sfc high
building into the region. For Friday through Sunday, the Canadian
model wants to move the ridge east all the way to the Midwest with
the GFS and the Euro keeping the flat ridge axis to our west.
With the long wave ridge currently just off the Pacific Coast,
will side with the latter two models. This soln would suggest weak
ripples in the flow closer to the jet to the north skirting our
northern tier zones where we will indicate just isold late day
convective activity in those areas Friday through sunday of next
week. Temperatures will continue to recover with highs in the 70s
at the lower elevations east of the divide and 60s west Thursday
warming to the 80s and 70s Friday through Sunday respectively.

With the added moisture we receive early in the week and warming
temps to follow, another increase in snow melt from the snow that
is left will likely take place, but not nearly as dramatic as
what has taken place these past few days. Some main stem rivers
will be high but not at record levels.

&&

.AVIATION...(For the 18Z TAFS through 18Z Monday afternoon)
Issued at 155 PM MDT Sun Jun 11 2017

WEST OF THE DIVIDE...KBPI/KJAC/KPNA/KRKS ROUTES

A warm front is expected continue to push northward across
southwest Wyoming during the remainder of this afternoon with
winds switching from southeast to a breezy to windy southerly
wind by late afternoon. The exception to this could be across
Jackson Hole where winds could remain mainly northerly. Isolated
to scattered convection is expected to move into the area from
Idaho along and north of a 20N EMM to 40SE PNA this afternoon,
and last well into the night. VFR conditions are expected except
for brief MVFR/IFR conditions in convection. Also, some LLWS could
develop tonight as southerly flow intensifies. After 18z Monday,
precipitation is expected to become more widespread along with
areas of MVFR and LCL IFr along with mtn obscn. The snow level
will lower to 7000 feet by 00z Tuesday in far Western Wyoming
including KJAC. However, Sweetwater County including KRKS will
remain dry and windy with south winds shifting to westerly at 20
to 30 knots Monday.

EAST OF THE DIVIDE...KCOD/KCPR/KLND/KRIW/KWRL ROUTES

A cold front is expected to remain along the Divide most of
the rest of the day with a northerly to easterly surface flow.
Isolated to scattered convection are expected to redevelop late in
the afternoon/early evening. This convection is expected to lift
northward, but continue well into the night. VFR conditions are
expected except brief MVFR/IFR conditions in any convection.
Southerly LLWS could also develop especially at terminals in the
foothills. After 18z monday, a stronger round of convection is
expected to develop with severe thunderstorms possible over
Johnson County including KBYG, and Northeast Natrona County.
Expect isold MVFR/IFR conditions with these storms.

&&

.FIRE WEATHER...
Issued AT 155 PM MDT Sun Jun 11 2017

A large unseasonably strong low pressure trough over the pacific
northwest will slowly approach the area with increasing showers
across the western and northern mountains with embedded isolated
thunderstorms possible in the afternoon and evening hours.  Snow
levels will lower to 8500 feet tonight, and 7500 feet on Monday
night. As colder air moves in stronger winds will move in as well.
A high wind watch has been issued for Sweetwater, fremont and
Natrona counties from noon Monday through 9 pm mdt Monday evening.
Mountain winds of 30 to 40 mph can be expected increasing to 40
to 45 mph by Monday afternoon with 35 to 45 mph winds across
Sweetwater, Fremont and Natrona counties. Snow accumulations above
8800 feet of 10 to 15 inches can be expected in the Tetons and
Gros Ventre mountains with 5 to 10 inches in the northern and
central mountains by late Tuesday. Wednesday will see drying
with some warming and brisk northwest winds. With breezy to windy
areas and an unstable air mass, mixing heights should be
favorable for very good to excellent smoke dispersal in the
afternoons. The mountains of the west will have poor to fair
smoke dispersal on Monday and Tuesday.

&&

.RIW WATCHES/WARNINGS/ADVISORIES...
High Wind Watch from Monday afternoon through Monday evening for
WYZ017>020-028>030.

&&

SHORT TERM...Baker
LONG TERM...Lipson
AVIATION...Lipson
FIRE WEATHER...Baker

Hazardous Weather Outlook
National Weather Service Riverton WY
114 PM MDT Sun Jun 11 2017

WYZ001>020-022>030-121915-
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-
114 PM MDT Sun Jun 11 2017

...Flood Warnings Remain in Effect in the Wind River and Upper
Green River Basins...

...High wind watch Sweetwater, Fremont and Natrona counties
Monday...

This Hazardous Weather Outlook is for Western and Central
Wyoming.

.DAY ONE...This Afternoon and Tonight

Isolated to scattered thunderstorms across northern and
central areas late in the day and this evening. Isolated strong
thunderstorms possible with hail and strong wind gusts.
Flooding along tributaries and main stem rivers will continue
across the Wind River and Green River Basins, and along the South
Fork of the Shoshone River.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Monday...High winds possible across Sweetwater, Fremont and
Natorna counties in the afternoon and evening. Isolated to
scattered thunderstorms. Some storms could be severe in portions
of Johnson and Natrona Counties. Windy to very windy in much of
central and southern Wyoming. Snow will move into western
mountains later Monday night.

Tuesday....Heavy wet snowfall likely in the the northern and western
mountains, including Grand Teton and Yellowstone National Parks.
Snowfall, slick roads and limited visibility likely over mountain
passes. A few inches of snow possible in far west valleys Tuesday
morning. Very windy across southern and central areas.

.SPOTTER INFORMATION STATEMENT...

Please report any flooding, or thunderstorm wind gusts over 50
mph, or hail.

Special Weather Statement
National Weather Service Riverton WY
1017 PM MDT SUN JUN 11 2017

WYZ007-017-120500-
Owl Creek and Bridger Mountains-Wind River Basin-
1017 PM MDT SUN JUN 11 2017

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL FREMONT COUNTY UNTIL
1100 PM MDT...

At 1016 PM MDT, Doppler radar was tracking a strong thunderstorm near
Shoshoni, moving northeast at 35 mph.

Half-inch size hail will be possible with this storm.

This strong thunderstorm will be near...
  Shoshoni around 1025 PM MDT.
  Boysen State Park Headquarters around 1035 PM MDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4301 10790 4319 10839 4345 10827 4344 10754
TIME...MOT...LOC 0416Z 213DEG 31KT 4322 10817

21

Special Weather Statement
National Weather Service Riverton WY
1027 PM MDT SUN JUN 11 2017

WYZ005>008-017-120515-
Owl Creek and Bridger Mountains-Wind River Basin-Southeast Big Horn
Basin-Southwest Big Horn Basin-Bighorn Mountains West-
1027 PM MDT SUN JUN 11 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN HOT SPRINGS...
NORTHWESTERN NATRONA...EAST CENTRAL FREMONT AND SOUTH CENTRAL
WASHAKIE COUNTIES UNTIL 1115 PM MDT...

At 1026 PM MDT, Doppler radar was tracking a strong thunderstorm near
Cottonwood Pass, which is 26 miles northeast of Shoshoni, moving
northeast at 30 mph.

Nickel size hail and winds in excess of 30 mph will be possible with
this storm.

This strong thunderstorm will be near...
  Cottonwood Pass around 1040 PM MDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4330 10764 4345 10788 4374 10766 4352 10725
TIME...MOT...LOC 0426Z 229DEG 25KT 4342 10765

21

Special Weather Statement
National Weather Service Riverton WY
1046 PM MDT SUN JUN 11 2017

WYZ005>008-017-120530-
Owl Creek and Bridger Mountains-Wind River Basin-Southeast Big Horn
Basin-Southwest Big Horn Basin-Bighorn Mountains West-
1046 PM MDT SUN JUN 11 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN HOT SPRINGS...
NORTHWESTERN NATRONA...NORTHEASTERN FREMONT AND SOUTH CENTRAL
WASHAKIE COUNTIES UNTIL 1130 PM MDT...

At 1045 PM MDT, Doppler radar was tracking a strong thunderstorm
near Lysite, which is 18 miles northeast of Shoshoni, moving
northeast at 35 mph.

Nickel size hail and winds in excess of 30 mph will be possible with
this storm.

This strong thunderstorm will be near...
  Cottonwood Pass around 1105 PM MDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4319 10768 4343 10803 4370 10771 4352 10724
TIME...MOT...LOC 0445Z 224DEG 32KT 4337 10777

21

Special Weather Statement
National Weather Service Riverton WY
1122 PM MDT SUN JUN 11 2017

WYZ006-008-009-120600-
Southeast Big Horn Basin-Bighorn Mountains Southeast-Bighorn
Mountains West-
1122 PM MDT SUN JUN 11 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN WASHAKIE COUNTY
UNTIL MIDNIGHT MDT...

At 1121 PM MDT, Doppler radar was tracking a strong thunderstorm 7
miles northeast of Cottonwood Pass, which is 34 miles south of Ten
Sleep, moving northeast at 35 mph.

Dime size hail and winds in excess of 40 mph will be possible with
this storm.

This strong thunderstorm will be near...
  Big Trails around 1150 PM MDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4353 10714 4345 10742 4359 10760 4365 10759
      4365 10768 4394 10714
TIME...MOT...LOC 0521Z 224DEG 31KT 4354 10745

21

Special Weather Statement
National Weather Service Riverton WY
1146 PM MDT SUN JUN 11 2017

WYZ006-008-009-011-120630-
Southeast Big Horn Basin-Southeast Johnson County-Bighorn Mountains
Southeast-Bighorn Mountains West-
1146 PM MDT SUN JUN 11 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN JOHNSON AND
SOUTHEASTERN WASHAKIE COUNTIES UNTIL 1230 AM MDT...

At 1144 PM MDT, Doppler radar was tracking a strong thunderstorm 14
miles southeast of Big Trails, which is 25 miles west of Kaycee,
moving east northeast at 40 mph.

Dime size hail and winds around 45 mph will be possible with this
storm.

This storm will remain over mainly rural areas of southwestern
Johnson and southeastern Washakie Counties but could impact the
Barnum area by around 1215 AM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4350 10729 4377 10738 4396 10671 4351 10669
TIME...MOT...LOC 0544Z 250DEG 34KT 4361 10712

21

Special Weather Statement
National Weather Service Riverton WY
1151 PM MDT SUN JUN 11 2017

WYZ005-007-120615-
Owl Creek and Bridger Mountains-Southwest Big Horn Basin-
1151 PM MDT SUN JUN 11 2017

At 1149 PM MDT, Doppler radar was tracking a thunderstorm near
Thermopolis, moving northeast at 30 mph.

Half inch hail and winds in excess of 30 mph will be possible with
this storm.

This thunderstorm will be near...
  Lucerne around 1210 AM MDT.
  Kirby around 1215 AM MDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4347 10818 4357 10839 4383 10824 4379 10804
      4370 10790
TIME...MOT...LOC 0549Z 213DEG 24KT 4359 10823

21