High Wind Warning 9, NWS Riverton, WY

820 
WWUS75 KRIW 141143
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
543 AM MDT Sat Mar 14 2026

WYZ003-005-150200-
/O.CON.KRIW.HW.W.0009.260314T1200Z-260315T0200Z/
Cody Foothills-Southwest Bighorn Basin-
Including the cities of Cody, Meeteetse, Clark, and Thermopolis
543 AM MDT Sat Mar 14 2026

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING...

* WHAT...West winds 30 to 40 mph with gusts up to 60 mph expected.

* WHERE...Southwest Bighorn Basin and Cody Foothills.

* WHEN...Until 8 PM MDT this evening.

* IMPACTS...Gusty winds will make travel difficult. Strong 
  cross-wind gusts on area highways could cause high-profile vehicle 
  blow-overs.

$$

WYZ007-015-150200-
/O.CON.KRIW.HW.W.0009.260314T1500Z-260315T0200Z/
Owl Creek and Bridger Mountains-Wind River Mountains East-
543 AM MDT Sat Mar 14 2026

...HIGH WIND WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 8 
PM MDT THIS EVENING...

* WHAT...West winds 35 to 45 mph with gusts up to 75 mph expected.

* WHERE...Owl Creek and Bridger Mountains and Wind River Mountains 
  East.

* WHEN...From 9 AM this morning to 8 PM MDT this evening.

* IMPACTS...Gusty winds will make travel difficult. Strong 
  cross-wind gusts on area highways could cause high-profile vehicle 
  blow-overs.

$$

WYZ011-019-020-022-150200-
/O.CON.KRIW.HW.W.0009.260314T1500Z-260315T0200Z/
Southeast Johnson County-Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-
Including the cities of Kaycee, Casper, and Jeffrey City
543 AM MDT Sat Mar 14 2026

...HIGH WIND WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 8 
PM MDT THIS EVENING...

* WHAT...West winds 30 to 40 mph with gusts up to 70 mph expected.

* WHERE...Casper Mountain, Green Mountains and Rattlesnake Range, 
  Natrona County Lower Elevations, and Southeast Johnson County.

* WHEN...From 9 AM this morning to 8 PM MDT this evening.

* IMPACTS...Gusty winds will make travel difficult. Strong 
  cross-wind gusts on area highways could cause high-profile vehicle 
  blow-overs.

$$

WYZ016>018-150200-
/O.CON.KRIW.HW.W.0009.260314T1500Z-260315T0200Z/
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Including the cities of Lander, Dubois, Shoshoni, and Riverton
543 AM MDT Sat Mar 14 2026

...HIGH WIND WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 8 
PM MDT THIS EVENING...

* WHAT...West winds 30 to 40 mph with gusts up to 65 mph expected.

* WHERE...Lander Foothills, Upper Wind River Basin, and Wind River 
  Basin.

* WHEN...From 9 AM this morning to 8 PM MDT this evening.

* IMPACTS...Gusty winds will make travel difficult. Strong 
  cross-wind gusts on area highways could cause high-profile vehicle 
  blow-overs.

$$

WYZ026>030-150200-
/O.CON.KRIW.HW.W.0009.260314T1800Z-260315T0500Z/
Upper Green River Basin-South Lincoln County-Rock Springs and
Green River-Flaming Gorge-East Sweetwater County-
Including the cities of Cokeville, Rock Springs, Kemmerer,
Wamsutter, La Barge, Green River, Farson, and Big Piney
543 AM MDT Sat Mar 14 2026

...HIGH WIND WARNING REMAINS IN EFFECT FROM NOON TODAY TO 11 PM MDT 
THIS EVENING...

* WHAT...West winds 30 to 40 mph with gusts up to 55 mph expected.

* WHERE...East Sweetwater County, Flaming Gorge, Rock Springs and 
  Green River, South Lincoln County, and Upper Green River Basin.

* WHEN...From noon today to 11 PM MDT this evening.

* IMPACTS...Gusty winds will make travel difficult. Strong 
  cross-wind gusts on area highways could cause high-profile vehicle 
  blow-overs.

$$

For more information from the National Weather Service, visit 
https://weather.gov/riw/ .

TL

707 
WWUS75 KRIW 141519
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
919 AM MDT Sat Mar 14 2026

WYZ003-005-150200-
/O.CON.KRIW.HW.W.0009.000000T0000Z-260315T0200Z/
Cody Foothills-Southwest Bighorn Basin-
Including the cities of Cody, Meeteetse, Thermopolis, and Clark
919 AM MDT Sat Mar 14 2026

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING...

* WHAT...West winds 30 to 40 mph with gusts up to 60 mph.

* WHERE...Southwest Bighorn Basin and Cody Foothills.

* WHEN...Until 8 PM MDT this evening.

* IMPACTS...Gusty winds will make travel difficult. Strong 
  cross-wind gusts on area highways could cause high-profile vehicle 
  blow-overs.

$$

WYZ007-015-150200-
/O.CON.KRIW.HW.W.0009.000000T0000Z-260315T0200Z/
Owl Creek and Bridger Mountains-Wind River Mountains East-
919 AM MDT Sat Mar 14 2026

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING...

* WHAT...West winds 35 to 45 mph with gusts up to 75 mph.

* WHERE...Owl Creek and Bridger Mountains and Wind River Mountains 
  East.

* WHEN...Until 8 PM MDT this evening.

* IMPACTS...Gusty winds will make travel difficult. Strong 
  cross-wind gusts on area highways could cause high-profile vehicle 
  blow-overs.

$$

WYZ011-019-020-022-150200-
/O.CON.KRIW.HW.W.0009.000000T0000Z-260315T0200Z/
Southeast Johnson County-Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-
Including the cities of Kaycee, Jeffrey City, and Casper
919 AM MDT Sat Mar 14 2026

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING...

* WHAT...West winds 30 to 40 mph with gusts up to 60 mph.

* WHERE...Casper Mountain, Green Mountains and Rattlesnake Range, 
  Natrona County Lower Elevations, and Southeast Johnson County.

* WHEN...Until 8 PM MDT this evening.

* IMPACTS...Gusty winds will make travel difficult. Strong 
  cross-wind gusts on area highways could cause high-profile vehicle 
  blow-overs.

$$

WYZ016>018-150200-
/O.CON.KRIW.HW.W.0009.000000T0000Z-260315T0200Z/
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Including the cities of Dubois, Shoshoni, Lander, and Riverton
919 AM MDT Sat Mar 14 2026

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING...

* WHAT...West winds 30 to 40 mph with gusts up to 65 mph.

* WHERE...Lander Foothills, Upper Wind River Basin, and Wind River 
  Basin.

* WHEN...Until 8 PM MDT this evening.

* IMPACTS...Gusty winds will make travel difficult. Strong 
  cross-wind gusts on area highways could cause high-profile vehicle 
  blow-overs.

$$

WYZ026>030-150500-
/O.CON.KRIW.HW.W.0009.260314T1800Z-260315T0500Z/
Upper Green River Basin-South Lincoln County-Rock Springs and
Green River-Flaming Gorge-East Sweetwater County-
Including the cities of Big Piney, Wamsutter, Kemmerer,
Cokeville, Green River, Rock Springs, La Barge, and Farson
919 AM MDT Sat Mar 14 2026

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 11 PM MDT THIS 
EVENING...

* WHAT...West winds 30 to 40 mph with gusts up to 55 mph expected.

* WHERE...East Sweetwater County, Flaming Gorge, Rock Springs and 
  Green River, South Lincoln County, and Upper Green River Basin.

* WHEN...Until 11 PM MDT this evening.

* IMPACTS...Gusty winds will make travel difficult. Strong 
  cross-wind gusts on area highways could cause high-profile vehicle 
  blow-overs.

$$

For more information from the National Weather Service, visit 
https://weather.gov/riw/ .

Straub

303 
WWUS75 KRIW 150154
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
754 PM MDT Sat Mar 14 2026

WYZ003-005-007-011-015>020-022-150300-
/O.EXP.KRIW.HW.W.0009.000000T0000Z-260315T0200Z/
Cody Foothills-Southwest Bighorn Basin-Owl Creek and Bridger
Mountains-Southeast Johnson County-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-Green
Mountains and Rattlesnake Range-Natrona County Lower Elevations-
Casper Mountain-
Including the cities of Jeffrey City, Thermopolis, Dubois,
Casper, Clark, Riverton, Cody, Lander, Kaycee, Shoshoni, and
Meeteetse
754 PM MDT Sat Mar 14 2026

...HIGH WIND WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING...

High wind gusts have ended across most locations in northern and 
central Wyoming; however, cold air advection behind the cold front 
will still cause gusts of 45 to 55 mph over the next few hours.

$$

WYZ026>030-150500-
/O.CON.KRIW.HW.W.0009.000000T0000Z-260315T0500Z/
Upper Green River Basin-South Lincoln County-Rock Springs and
Green River-Flaming Gorge-East Sweetwater County-
Including the cities of Rock Springs, Kemmerer, Wamsutter,
Cokeville, Farson, Green River, La Barge, and Big Piney
754 PM MDT Sat Mar 14 2026

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 11 PM MDT THIS 
EVENING...

* WHAT...Winds 30 to 40 mph with gusts 55 to 65 mph.

* WHERE...East Sweetwater County, Flaming Gorge, Rock Springs and 
  Green River, South Lincoln County, and Upper Green River Basin.

* WHEN...Until 11 PM MDT this evening.

* IMPACTS...Gusty winds will make travel difficult. Strong 
  cross-wind gusts on area highways could cause high-profile vehicle 
  blow-overs.

$$

For more information from the National Weather Service, visit 
https://weather.gov/riw/ .

VandenBoogart

979 
WWUS75 KRIW 150441
NPWRIW

URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
1041 PM MDT Sat Mar 14 2026

WYZ026>030-150545-
/O.EXP.KRIW.HW.W.0009.000000T0000Z-260315T0500Z/
Upper Green River Basin-South Lincoln County-Rock Springs and
Green River-Flaming Gorge-East Sweetwater County-
Including the cities of Cokeville, Kemmerer, Wamsutter, La Barge,
Green River, Big Piney, Farson, and Rock Springs
1041 PM MDT Sat Mar 14 2026

...HIGH WIND WARNING WILL EXPIRE AT 11 PM MDT THIS EVENING...

Winds have been trending downward in the last hour as the cold front 
approaches and the threat for high winds has gone down. Thus, the 
High Wind Warnings will be allowed to expire.

$$

For more information from the National Weather Service, visit 
https://weather.gov/riw/ .

TL

Area Forecast Discussion
National Weather Service Riverton WY
1142 AM MDT Fri Mar 13 2026

.KEY MESSAGES...

- Winds are not expected to be as strong as yesterday, however
  gusts of 40 to 55 mph are expected to occur. High winds over
  70 mph look to occur off the Washakie Needles (southern end of
  the Absaroka Mountains) and the east slopes of the Wind River
  Mountains.

- There is a 60% chance of Cody and Casper reaching 60 mph. This
  could be an isolated gust that will likely occur between 3PM
  and 6PM.

- Windy conditions will be widespread once again Saturday, with
  gusts of 40 to 55 mph impacting much of the CWA. High Wind
  Watches are in effect for central portions where higher gusts
  up to 60 mph are expected.

- A cold front is forecast to bring light accumulating snow to
  lower elevations east of the Divide Saturday night into
  Sunday. Temperatures will be 10 to 30 degrees colder Sunday.

- Confidence is high (90%) for well above average temperatures
  from Tuesday onward, with record-breaking heat possible.

&&

.DISCUSSION...
Issued at 339 AM MDT Fri Mar 13 2026

Although the High Wind Warnings from Thursday have expired, gusty
winds continue this morning over mainly western portions of the CWA.
Gusts of 25 to 30 mph through the Jackson Valley will continue,
before increasing around 15Z. Gusts of 35 to 55 mph also continue
over South Pass. It will be another day of widespread gusty winds as
the overall pattern remain in place and changes little compared to
Thursday. The pressure gradient remains tight, as a 150kt jet streak
of the PFJ moves over the Northern Plains today. Winds are not
expected to be as strong as yesterday, however gusts of 40 to 55 mph
are expected to occur. High winds over 70 mph look to occur off the
Washakie Needles (southern end of the Absaroka Mountains) and the
east slopes of the Wind River Mountains. However, these winds do not
look to impact Red Canyon/South Pass, but will range between 60 and
70 mph. This be due to 700mb winds being more westerly, which is not
as conducive for the higher winds. Will not issue new High Wind
Warnings as a result. Some notable exceptions are Cody and Casper,
where there are a 60% chance of reaching 60 mph. This could be an
isolated gust that will likely occur between 21Z (3pm) and 00Z
(6pm). Snow will continue over the higher elevation in northwestern
portions, with most locations receiving 3 to 6 inches through the
evening. Locally higher amounts will occur over the western slopes
of the Absarokas, as a result of the northwest flow pattern.

The flow aloft will become more zonal Saturday, as a storm system
drops southward over northwestern MT. This will tighten the pressure
gradient even more, with high winds returning to several locations.
Windy conditions will be widespread once again, with gusts of 40 to
55 mph impacting much of the CWA. Central portions look to have
higher gusts up to 60 mph, due to 700mb winds of 50 to 60kt.
Additionally, these winds will be downsloping off the Wind River
Mountains adding to the threat of 60 mph winds. Have issued High
Wind Watches for the Wind River Basin, the east slopes of the Wind
River Mountains, the Green Mountains/Rattlesnake Range and portions
of Natrona County as a result. A Watch/Warning may also be needed
for the Cody Foothills, but will leave for the day shift to take
another look. Snow will continue over northwestern portions tonight
into Saturday, with amounts of 12 to 16 inches over the higher
elevations. Issued Winter Storm Watches for Yellowstone, the
Absarokas, the Tetons/Gros Ventres and Bighorns for
Saturday/Saturday night for these amounts, along with the added
threat of 50 to 60 mph winds. Left the Wind River Mountains out of
this package due to the higher amounts of snow occurring in the
higher, more isolated elevations and not impacting South Pass. Wind
was deemed to be the higher threat.

The associated cold front will quickly move through the area
starting after 00Z Sunday. Winds will begin to decrease, but the
threat for an isolated gust of 60 mph will remain in place. This
will especially be true for locations prone to post-frontal winds
like Buffalo and Cody. However, this threat looks to only be for a
few hours between 03Z and 06Z. Northwest winds of 35 to 45 mph will
continue in these areas (the Bighorn Basin and Johnson County) will
last through the night. Conditions will also be fighting the natural
decoupling that occurs after sunset, so even though 700mb winds
around 50kt will be in place between 00Z and 03Z it will be harder
for those winds to mix down to the sfc. Snow will also occur along
and behind the front for areas east of the Divide. The Cody
Foothills, Johnson/Natrona counties and southern portions of Fremont
County will have the best chances, with 2 to 3 inches expected
Saturday night. Other locations east of the Divide will have more
meager amounts of 0.5 to 1.5 inches.

Winds will finally be decreasing across the area by sunrise Sunday
morning, as the storm system makes its way into the Southern Plains.
It will be a raw day for the ides of March, with readings 10 to 30
degrees colder from Saturday leaving daytime highs in the 20s and
30s. North to northwest winds will be in place, with breezy
conditions returning to areas west of the Divide. Gusts of 25 to 35
mph will be widespread, including in the western mountains. These
conditions will be temporary though (it is March after all), as a
strong ridge builds over the West Coast Monday with a strong
storm over the eastern half of the CONUS. Temperatures will
rebound into the 40s and 50s, with gusty winds returning again.
Gusts of 25 to 45 mph will occur again over southern and
southwestern portions, but also include the Wind Corridor (from
the Divide into Natrona County).

The story from Tuesday onward will be the above normal temperatures
as the high center from the ridge moves inland and settles over the
Desert Southwest in the form of a 594dm high. This is very anomalous
for this time of year and looks to result in highs in the 70s. Highs
could reach into the lower 80s for portions east of the Divide by
Thursday. Tuesday looks to be another breezy to windy day, as the
ridge will still be well to the west of the region and allow the PFJ
be over the Northern Rockies. This trend looks to decrease by
Wednesday, as the high center moves over the Desert Southwest.

&&

.AVIATION /18Z TAFS THROUGH 18Z SATURDAY/...
Issued at 1142 AM MDT Fri Mar 13 2026

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

Continued mid-level cloud deck at KJAC in strong northwest flow
aloft through much of the period, with occasional similar decks at
KPNA and KBPI. The arrival of a quick-moving shortwave provides for
a PROB30 of MVFR and light snow at KJAC just before 18Z/Saturday.
Other terminals remain dry and VFR. The primary hazard remains gusty
westerly wind 34-48kts at KRKS and 25-35kts elsewhere until around
01Z-03Z/Saturday. Speeds decrease after that time but remain breezy.
Westerly surface wind again increases 15Z-17Z/Saturday as the
pressure gradient tightens with an approaching shortwave. KJAC sees
lowering ceilings late Saturday morning with the potential for the
late morning MVFR conditions in light snow. Mountain tops obscured.

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

Wind is again the primary aviation hazard through the forecast
period as all terminals remain VFR. Westerly surface wind 25-40kts
will be common Friday afternoon before decreasing 01Z-03Z/Saturday.
The wind returns 15Z-17Z/Saturday with common speeds 34-46kts prior
to 18Z. KWRL is the exception as mixing may occur there shortly
after 18Z/Saturday. Mountain tops obscured.

Please see the Aviation Weather Center and/or CWSU ZLC and ZDV for
the latest information on icing and turbulence forecasts.

&&

.RIW WATCHES/WARNINGS/ADVISORIES...
Winter Storm Watch from Saturday morning through Saturday
evening for WYZ001-002-012.

Winter Storm Watch from Saturday morning through late Saturday
night for WYZ008-009.

High Wind Watch from Saturday morning through Saturday evening
for WYZ015.

High Wind Watch from Saturday afternoon through Saturday
evening for WYZ016>020.

&&

DISCUSSION...LaVoie
AVIATION...CNJ

Hazardous Weather Outlook
National Weather Service Riverton WY
352 AM MDT Fri Mar 13 2026

WYZ001>020-022>030-141400-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Bighorn Basin-Southwest Bighorn Basin-Southeast Bighorn 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-
352 AM MDT Fri Mar 13 2026

...WINTER STORM WATCH IN EFFECT FOR YELLOWSTONE...THE
ABSAROKA...TETON...GROS VENTRE AND BIGHORN MOUNTAINS...FROM SATURDAY
MORNING THROUGH SATURDAY EVENING...

...HIGH WIND WATCH IN EFFECT FOR THE WIND RIVER BASIN...THE EAST
SLOPES OF THE WIND RIVER MOUNTAINS AND PORTIONS OF NATRONA COUNTY FROM
SATURDAY MORNING THROUGH SATURDAY EVENING...

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE...Today and tonight.

Winds are not expected to be as strong as yesterday, however gusts
of 40 to 55 mph are expected to occur. High winds over 70 mph look to
occur off the Washakie Needles (southern end of the Absaroka
Mountains) and the east slopes of the Wind River Mountains. There is
a 60% chance of Cody and Casper reaching 60 mph. This could be an
isolated gust that will likely occur between 3PM and 6PM.

Light snow will occur over the northwestern mountains today and
tonight, with accumulations of 3 to 6 inches for most locations.
Locally higher amounts up to 12 inches expected over the western
slopes of the Absarokas.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Saturday through Saturday Night...Widespread wind gusts 35 to 50 mph
across most of the region. Higher gusts up to 60 mph expected over
central portions. Another round of heavier snow arrives Saturday
morning and persists through Saturday night. The passage of a cold
front Saturday night will lead to light snowfall across lower
elevations east of the Continental Divide after sunset Saturday.

Sunday...Temperatures will be 10 to 30 degrees colder, in the 20s and
30s. Wind gusts of 25 to 35 mph will occur across areas west of the
Divide.

Tuesday through Thursday...Above normal to near-record temperatures
expected, with readings in the 80s for some areas east of the Divide
Wednesday and Thursday.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.