High Wind Warning 36, NWS Cheyenne, WY

808 
WWUS75 KCYS 222154
NPWCYS

URGENT - WEATHER MESSAGE
National Weather Service Cheyenne WY
354 PM MDT Fri Sep 22 2023

WYZ110-115-230600-
/O.CON.KCYS.HW.W.0036.230923T0300Z-230923T2100Z/
North Snowy Range Foothills-Laramie Valley-
Including the cities of Arlington, Elk Mountain, Laramie, 
and Bosler
354 PM MDT Fri Sep 22 2023

...HIGH WIND WARNING REMAINS IN EFFECT FROM 9 PM THIS EVENING TO
3 PM MDT SATURDAY...

* WHAT...West to southwest winds 35 to 50 MPH with gusts up to 
  70 MPH likely.

* WHERE...North Snowy Range Foothills including Arlington and 
  Elk Mountain along Interstate 80 between Laramie and Rawlins.

* WHEN...9 PM MDT this evening until 3 PM MDT Saturday.

* IMPACTS...Mainly to transportation. Strong cross winds will be 
  hazardous to light weight or high profile vehicles, including 
  campers and tractor trailers.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

&&

$$

WYZ116-117-230600-
/O.CON.KCYS.HW.W.0036.230923T0600Z-230923T2100Z/
South Laramie Range-South Laramie Range Foothills-
Including the cities of Buford, Pumpkin Vine, Vedauwoo, Whitaker,
Federal, and Horse Creek
354 PM MDT Fri Sep 22 2023

...HIGH WIND WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
3 PM MDT SATURDAY...

* WHAT...West winds 40 to 55 MPH with gusts up to 80 MPH 
  expected.

* WHERE...South Laramie Range and South Laramie Range Foothills 
  including Interstate 80 between Laramie and Cheyenne.

* WHEN...Midnight MDT Friday Night until 3 PM MDT Saturday.

* IMPACTS...Mainly to transportation. Strong cross winds will be 
  hazardous to light weight or high profile vehicles, including 
  campers and tractor trailers.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

&&

$$

WYZ106-107-230600-
/O.CON.KCYS.HW.W.0036.230923T0300Z-230923T2100Z/
Central Laramie Range and Southwest Platte County-
East Platte County-
Including the cities of Bordeaux, Wheatland, and Guernsey
354 PM MDT Fri Sep 22 2023

...HIGH WIND WARNING REMAINS IN EFFECT FROM 9 PM THIS EVENING TO
3 PM MDT SATURDAY...

* WHAT...West winds 35 to 50 MPH with gusts up to 75 MPH 
  expected.

* WHERE...Much of Platte County including Chugwater, Bordeaux, 
  Wheatland, and Glendo. This includes Interstate 25 across 
  eastern Platte County.

* WHEN...9 PM MDT this evening until 3 PM MDT Saturday.

* IMPACTS...Damaging winds will blow down trees and power lines. 
  Widespread power outages are expected. Travel will be 
  difficult, especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

&&

$$

WYZ118-230600-
/O.CON.KCYS.HW.W.0036.230923T0800Z-230923T2100Z/
Central Laramie County-
Including the city of Cheyenne
354 PM MDT Fri Sep 22 2023

...HIGH WIND WARNING REMAINS IN EFFECT FROM 2 AM TO 3 PM MDT
SATURDAY...

* WHAT...West winds 35 to 50 MPH with gusts up to 70 MPH likely.

* WHERE...Central Laramie County including the city of Cheyenne.

* WHEN...2 AM until 3 PM MDT Saturday.

* IMPACTS...Mainly to transportation. Strong cross winds will be 
  hazardous to light weight or high profile vehicles, including 
  campers and tractor trailers.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

&&

$$

647 
WWUS75 KCYS 230053
NPWCYS

URGENT - WEATHER MESSAGE
National Weather Service Cheyenne WY
653 PM MDT Fri Sep 22 2023

WYZ104-231100-
/O.EXB.KCYS.HW.W.0036.230923T0300Z-230923T1800Z/
Ferris/Seminoe/Shirley Mountains-
Including the city of Seminoe Dam
653 PM MDT Fri Sep 22 2023

...HIGH WIND WARNING IN EFFECT UNTIL NOON MDT SATURDAY...

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

* WHERE...Ferris/Seminoe/Shirley Mountains.

* WHEN...Until noon MDT Saturday.

* IMPACTS...Mainly to transportation. Strong cross winds will be 
  hazardous to light weight or high profile vehicles, including 
  campers and tractor trailers.

* ADDITIONAL DETAILS...PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

&&

$$

WYZ110-115-231100-
/O.CON.KCYS.HW.W.0036.230923T0300Z-230923T2100Z/
North Snowy Range Foothills-Laramie Valley-
Including the cities of Arlington, Elk Mountain, Laramie, 
and Bosler
653 PM MDT Fri Sep 22 2023

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 3 PM MDT SATURDAY...

* WHAT...West to southwest winds 35 to 50 MPH with gusts up to 
  70 MPH likely.

* WHERE...North Snowy Range Foothills including Arlington and 
  Elk Mountain along Interstate 80 between Laramie and Rawlins.

* WHEN...9 PM MDT this evening until 3 PM MDT Saturday.

* IMPACTS...Mainly to transportation. Strong cross winds will be 
  hazardous to light weight or high profile vehicles, including 
  campers and tractor trailers.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

&&

$$

WYZ116-117-231100-
/O.CON.KCYS.HW.W.0036.230923T0600Z-230923T2100Z/
South Laramie Range-South Laramie Range Foothills-
Including the cities of Buford, Pumpkin Vine, Vedauwoo, Whitaker,
Federal, and Horse Creek
653 PM MDT Fri Sep 22 2023

...HIGH WIND WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
3 PM MDT SATURDAY...

* WHAT...West winds 40 to 55 MPH with gusts up to 80 MPH 
  expected.

* WHERE...South Laramie Range and South Laramie Range Foothills 
  including Interstate 80 between Laramie and Cheyenne.

* WHEN...Midnight MDT Friday Night until 3 PM MDT Saturday.

* IMPACTS...Mainly to transportation. Strong cross winds will be 
  hazardous to light weight or high profile vehicles, including 
  campers and tractor trailers.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

&&

$$

WYZ106-107-231100-
/O.CON.KCYS.HW.W.0036.230923T0300Z-230923T2100Z/
Central Laramie Range and Southwest Platte County-
East Platte County-
Including the cities of Bordeaux, Wheatland, and Guernsey
653 PM MDT Fri Sep 22 2023

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 3 PM MDT SATURDAY...

* WHAT...West winds 35 to 50 MPH with gusts up to 75 MPH 
  expected.

* WHERE...Much of Platte County including Chugwater, Bordeaux, 
  Wheatland, and Glendo. This includes Interstate 25 across 
  eastern Platte County.

* WHEN...9 PM MDT this evening until 3 PM MDT Saturday.

* IMPACTS...Damaging winds will blow down trees and power lines. 
  Widespread power outages are expected. Travel will be 
  difficult, especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

&&

$$

WYZ118-231100-
/O.CON.KCYS.HW.W.0036.230923T0800Z-230923T2100Z/
Central Laramie County-
Including the city of Cheyenne
653 PM MDT Fri Sep 22 2023

...HIGH WIND WARNING REMAINS IN EFFECT FROM 2 AM TO 3 PM MDT
SATURDAY...

* WHAT...West winds 35 to 50 MPH with gusts up to 70 MPH likely.

* WHERE...Central Laramie County including the city of Cheyenne.

* WHEN...2 AM until 3 PM MDT Saturday.

* IMPACTS...Mainly to transportation. Strong cross winds will be 
  hazardous to light weight or high profile vehicles, including 
  campers and tractor trailers.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

&&

$$

874 
WWUS75 KCYS 230805
NPWCYS

URGENT - WEATHER MESSAGE
National Weather Service Cheyenne WY
205 AM MDT Sat Sep 23 2023

WYZ104-231800-
/O.CON.KCYS.HW.W.0036.000000T0000Z-230923T1800Z/
Ferris/Seminoe/Shirley Mountains-
Including the city of Seminoe Dam
205 AM MDT Sat Sep 23 2023

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL NOON MDT TODAY...

* WHAT...West winds 35 to 45 MPH with gusts up to 60 MPH expected.

* WHERE...Northern Carbon County including the Ferris and Seminoe
  Mountains, Muddy Gap. 

* WHEN...Until noon MDT today. 

* IMPACTS...Mainly to transportation. Strong cross winds will be
  hazardous to light weight or high profile vehicles, including
  campers and tractor trailers.

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.

&&

$$

WYZ110-115-232100-
/O.CON.KCYS.HW.W.0036.000000T0000Z-230923T2100Z/
North Snowy Range Foothills-Laramie Valley-
Including the cities of Arlington, Elk Mountain, Laramie, 
and Bosler
205 AM MDT Sat Sep 23 2023

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 3 PM MDT THIS
AFTERNOON...

* WHAT...West to southwest winds 35 to 45 MPH with gusts up to 65
  MPH likely.

* WHERE...North Snowy Range Foothills including Arlington and 
  Elk Mountain along Interstate 80 between Laramie and Rawlins.

* WHEN...Until 3 PM MDT this afternoon. The strongest winds are
  expected around sunrise. 

* IMPACTS...Mainly to transportation. Strong cross winds will be 
  hazardous to light weight or high profile vehicles, including 
  campers and tractor trailers.

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.

&&

$$

WYZ116-117-232100-
/O.CON.KCYS.HW.W.0036.000000T0000Z-230923T2100Z/
South Laramie Range-South Laramie Range Foothills-
Including the cities of Buford, Pumpkin Vine, Vedauwoo, Whitaker,
Federal, and Horse Creek
205 AM MDT Sat Sep 23 2023

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 3 PM MDT THIS
AFTERNOON...

* WHAT...West winds 35 to 50 MPH with gusts up to 80 MPH 
  expected.

* WHERE...South Laramie Range and South Laramie Range Foothills 
  including Interstate 80 between Laramie and Cheyenne.

* WHEN...Until 3 PM MDT this afternoon. The strongest winds are
  expected around sunrise. 

* IMPACTS...Mainly to transportation. Strong cross winds will be 
  hazardous to light weight or high profile vehicles, including 
  campers and tractor trailers.

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.

&&

$$

WYZ106-107-232100-
/O.CON.KCYS.HW.W.0036.000000T0000Z-230923T2100Z/
Central Laramie Range and Southwest Platte County-
East Platte County-
Including the cities of Bordeaux, Wheatland, and Guernsey
205 AM MDT Sat Sep 23 2023

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 3 PM MDT THIS
AFTERNOON...

* WHAT...West winds 35 to 50 MPH with gusts up to 75 MPH 
  expected.

* WHERE...Much of Platte County including Chugwater, Bordeaux, 
  Wheatland, and Glendo. This includes Interstate 25 across 
  eastern Platte County.

* WHEN...Until 3 PM MDT this afternoon. The strongest winds are
  expected around sunrise. 

* IMPACTS...Mainly to transportation. Strong cross winds will be
  hazardous to light weight or high profile vehicles, including
  campers and tractor trailers.

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.

&&

$$

WYZ118-232100-
/O.CON.KCYS.HW.W.0036.000000T0000Z-230923T2100Z/
Central Laramie County-
Including the city of Cheyenne
205 AM MDT Sat Sep 23 2023

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 3 PM MDT THIS
AFTERNOON...

* WHAT...West winds 35 to 50 MPH with gusts up to 70 MPH likely.

* WHERE...Central Laramie County including the city of Cheyenne.

* WHEN...Until 3 PM MDT this afternoon. The strongest winds are
  expected around sunrise. 

* IMPACTS...Mainly to transportation. Strong cross winds will be 
  hazardous to light weight or high profile vehicles, including 
  campers and tractor trailers.

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.

&&

$$

CLH

117 
WWUS75 KCYS 231926
NPWCYS

URGENT - WEATHER MESSAGE
National Weather Service Cheyenne WY
126 PM MDT Sat Sep 23 2023

WYZ115-241200-
/O.CAN.KCYS.HW.W.0036.000000T0000Z-230923T2100Z/
/O.NEW.KCYS.FZ.W.0001.230924T0700Z-230924T1400Z/
Laramie Valley-
Including the cities of Laramie and Bosler
126 PM MDT Sat Sep 23 2023

...FREEZE WARNING IN EFFECT FROM 1 AM TO 8 AM MDT SUNDAY...
...HIGH WIND WARNING IS CANCELLED...

* WHAT...Sub-freezing temperatures as low as 30 expected.

* WHERE...Laramie Valley.

* WHEN...From 1 AM to 8 AM MDT Sunday.

* IMPACTS...Frost and freeze conditions will kill crops, other
  sensitive vegetation and possibly damage unprotected outdoor
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

WYZ113-241200-
/O.NEW.KCYS.FZ.W.0001.230924T0700Z-230924T1400Z/
Upper North Platte River Basin-
Including the cities of Saratoga and Encampment
126 PM MDT Sat Sep 23 2023

...FREEZE WARNING IN EFFECT FROM 1 AM TO 8 AM MDT SUNDAY...

* WHAT...Sub-freezing temperatures as low as 30 expected.

* WHERE...Upper North Platte River Basin.

* WHEN...From 1 AM to 8 AM MDT Sunday.

* IMPACTS...Frost and freeze conditions will kill crops, other
  sensitive vegetation and possibly damage unprotected outdoor
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

WYZ110-232100-
/O.CON.KCYS.HW.W.0036.000000T0000Z-230923T2100Z/
North Snowy Range Foothills-
Including the cities of Arlington and Elk Mountain
126 PM MDT Sat Sep 23 2023

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 3 PM MDT THIS
AFTERNOON...

* WHAT...West to southwest winds 30 to 40 MPH with gusts up to 60
  MPH likely.

* WHERE...North Snowy Range Foothills including Arlington and 
  Elk Mountain along Interstate 80 between Laramie and Rawlins.

* WHEN...Until 3 PM MDT this afternoon. 

* IMPACTS...Mainly to transportation. Strong cross winds will be 
  hazardous to light weight or high profile vehicles, including 
  campers and tractor trailers.

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.

&&

$$

WYZ116-117-232100-
/O.CON.KCYS.HW.W.0036.000000T0000Z-230923T2100Z/
South Laramie Range-South Laramie Range Foothills-
Including the cities of Buford, Pumpkin Vine, Vedauwoo, Whitaker,
Federal, and Horse Creek
126 PM MDT Sat Sep 23 2023

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 3 PM MDT THIS
AFTERNOON...

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

* WHERE...South Laramie Range and South Laramie Range Foothills 
  including Interstate 80 between Laramie and Cheyenne.

* WHEN...Until 3 PM MDT this afternoon. 

* IMPACTS...Mainly to transportation. Strong cross winds will be 
  hazardous to light weight or high profile vehicles, including 
  campers and tractor trailers.

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.

&&

$$

WYZ106-107-232100-
/O.CON.KCYS.HW.W.0036.000000T0000Z-230923T2100Z/
Central Laramie Range and Southwest Platte County-
East Platte County-
Including the cities of Bordeaux, Wheatland, and Guernsey
126 PM MDT Sat Sep 23 2023

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 3 PM MDT THIS
AFTERNOON...

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

* WHERE...Much of Platte County including Chugwater, Bordeaux, 
  Wheatland, and Glendo. This includes Interstate 25 across 
  eastern Platte County.

* WHEN...Until 3 PM MDT this afternoon. 

* IMPACTS...Mainly to transportation. Strong cross winds will be 
  hazardous to light weight or high profile vehicles, including 
  campers and tractor trailers.

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.

&&

$$

WYZ118-232100-
/O.CON.KCYS.HW.W.0036.000000T0000Z-230923T2100Z/
Central Laramie County-
Including the city of Cheyenne
126 PM MDT Sat Sep 23 2023

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 3 PM MDT THIS
AFTERNOON...

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

* WHERE...Central Laramie County including the city of Cheyenne.

* WHEN...Until 3 PM MDT this afternoon. 

* IMPACTS...Mainly to transportation. Strong cross winds will be 
  hazardous to light weight or high profile vehicles, including 
  campers and tractor trailers.

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.

&&

$$

WYZ105-109-241200-
/O.NEW.KCYS.FR.Y.0001.230924T0700Z-230924T1400Z/
Shirley Basin-Central Carbon County-
Including the cities of Medicine Bow, Shirley Basin, and Rawlins
126 PM MDT Sat Sep 23 2023

...FROST ADVISORY IN EFFECT FROM 1 AM TO 8 AM MDT SUNDAY...

* WHAT...Temperatures as low as 33 will result in frost 
  formation.

* WHERE...Shirley Basin and Central Carbon County.

* WHEN...From 1 AM to 8 AM MDT Sunday.

* IMPACTS...Frost could kill sensitive outdoor vegetation if left
  uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

730 
WWUS75 KCYS 232102
NPWCYS

URGENT - WEATHER MESSAGE
National Weather Service Cheyenne WY
302 PM MDT Sat Sep 23 2023

WYZ110-232215-
/O.EXP.KCYS.HW.W.0036.000000T0000Z-230923T2100Z/
North Snowy Range Foothills-
Including the cities of Arlington and Elk Mountain
302 PM MDT Sat Sep 23 2023

...HIGH WIND WARNING WILL EXPIRE AT 3 PM MDT THIS AFTERNOON...

Elevated west to northwest winds will remain below high wind
warning criteria the remainder of this afternoon. However, wind
gusts up to 40-50mph are still possible at times in the wind prone
corridors. 

$$

WYZ116-117-232215-
/O.EXP.KCYS.HW.W.0036.000000T0000Z-230923T2100Z/
South Laramie Range-South Laramie Range Foothills-
Including the cities of Buford, Pumpkin Vine, Vedauwoo, Whitaker,
Federal, and Horse Creek
302 PM MDT Sat Sep 23 2023

...HIGH WIND WARNING WILL EXPIRE AT 3 PM MDT THIS AFTERNOON...

Elevated west to northwest winds will remain below high wind
warning criteria the remainder of this afternoon. However, wind
gusts up to 40-50mph are still possible at times in the wind prone
corridors. .

$$

WYZ106-107-232215-
/O.EXP.KCYS.HW.W.0036.000000T0000Z-230923T2100Z/
Central Laramie Range and Southwest Platte County-
East Platte County-
Including the cities of Bordeaux, Wheatland, and Guernsey
302 PM MDT Sat Sep 23 2023

...HIGH WIND WARNING WILL EXPIRE AT 3 PM MDT THIS AFTERNOON...

Elevated west to northwest winds will remain below high wind
warning criteria the remainder of this afternoon. However, wind
gusts up to 30-40mph are still possible at times through the rest
of this afternoon.

$$

WYZ118-232215-
/O.EXP.KCYS.HW.W.0036.000000T0000Z-230923T2100Z/
Central Laramie County-
Including the city of Cheyenne
302 PM MDT Sat Sep 23 2023

...HIGH WIND WARNING WILL EXPIRE AT 3 PM MDT THIS AFTERNOON...

Elevated west to northwest winds will remain below high wind
warning criteria the remainder of this afternoon. However, wind
gusts up to 30-40mph are still possible at times through this
evening.


$$

WYZ113-115-241200-
/O.CON.KCYS.FZ.W.0001.230924T0700Z-230924T1400Z/
Upper North Platte River Basin-Laramie Valley-
Including the cities of Saratoga, Encampment, Laramie, and Bosler
302 PM MDT Sat Sep 23 2023

...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 8 AM MDT
SUNDAY...

* WHAT...Sub-freezing temperatures as low as 32 expected.

* WHERE...Upper North Platte River Basin and Laramie Valley.

* WHEN...From 1 AM to 8 AM MDT Sunday.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

WYZ105-109-241200-
/O.CON.KCYS.FR.Y.0001.230924T0700Z-230924T1400Z/
Shirley Basin-Central Carbon County-
Including the cities of Medicine Bow, Shirley Basin, and Rawlins
302 PM MDT Sat Sep 23 2023

...FROST ADVISORY REMAINS IN EFFECT FROM 1 AM TO 8 AM MDT
SUNDAY...

* WHAT...Temperatures as low as 34 will result in frost 
  formation.

* WHERE...Shirley Basin and Central Carbon County.

* WHEN...From 1 AM to 8 AM MDT Sunday.

* IMPACTS...Frost could kill sensitive outdoor vegetation if 
  left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

BW

Area Forecast Discussion
National Weather Service Cheyenne WY
601 PM MDT Thu Sep 21 2023

.SHORT TERM...(This evening through Friday)
Issued at 345 PM MDT Thu Sep 21 2023

A surface trough draped over the eastern half of the CWA with
elevated instability led to scattered showers and thunderstorms this
morning. Early this afternoon, storms dissipated and pushed
northward out of the CWA. Hi-Res guidance, the HRRR in particular,
develops another round of stronger storms off the high terrain mid
this afternoon and pushes them eastward. The HRRR does have almost
2000 J/kg of SBCAPE making it into parts of the Nebraska panhandle
later this afternoon. This could support an isolated strong storm or
two with hail and gusty winds. Cannot rule out a severe storm later
this afternoon/evening in this setup, especially with a Marginal
Risk for severe weather across most of the panhandle. Other Hi-Res
are less aggressive this afternoon and evening, still showing a
decent capping inversion which will limit convective potential.

Heading into Friday morning, a stationary front and surface low
continues to linger over the Pine Ridge. With some leftover
instability from today's storms also lingering in the vicinity of
the Pine Ridge, another round of morning showers and thunderstorms
looks possible across the northern Nebraska panhandle counties and
Converse and Niobrara Counties in east-central Wyoming. Beyond
this, the afternoon looks relatively dry for most locations based
off of Hi-Res guidance. A few isolated storms, potentially strong
to severe, may pop in the aforementioned areas as instability
increases throughout the afternoon. Again, there is another
Marginal Risk for severe storms across much of the panhandle and
into our northern Wyoming forecast zones. Currently, Chadron is
even in a Slight Risk for severe storms. Will continue to monitor
this for updates, however the best chance for severe storms looks
northeast of the CWA.

Friday night, a strong cold front pushes through the CWA. There
could be some precipitation associated with the FROPA, however the
bigger concern will be high winds across the usual southeast Wyoming
wind prones. The cold front will increase gradients rapidly across
the Laramie Range and westward. 700 mb height gradients also rapidly
steepen, peaking above 70 meters by Saturday morning. Winds aloft
will greatly strengthen Saturday morning over the wind prones, with
60 to 70 kt 750 mb winds. Strong downward omegas should easily mix
these winds down to the surface. As a result, issued a High Wind
Watch for the usual wind prones, Arlington/Elk Mountain, the south
Laramie Range and adjacent foothills, Bordeaux, and even for
central Laramie County including the city of Cheyenne. Winds
should ease Saturday afternoon as gradients ease behind the front
and an upper- level ridge builds behind it.

.LONG TERM...(Friday night through Thursday)
Issued at 300 PM MDT Thu Sep 21 2023

Key Impact Messages:

1) After an initial High Wind and breezy period, winds will decrease
Sunday but elevated to near critical fire weather conditions will
remain.

2) Elevated to near-critical fire weather conditions continue Monday
into Tuesday. A Fire Weather Watch might be needed Sunday into
Tuesday for particular fire weather zones.

3) Overall temperatures will be at to slightly above normal with dry
conditions expected through next Thursday.

Weather Discussion: Late Saturday into Sunday pattern will feature a
tight closed H5 low over South Dakota with NW H5 flow as additional
subsidence kicks in over SE WY and the West NE Panhandle. While
Saturday will be the main wind event period, height gradients Sunday
will be enough to support elevated winds during peak afternoon
mixing for fire weather concerns. A Fire Weather Watch could be
needed Sunday and potentially into Monday and Tuesday. Internal AI
guidance highlights that 20 to 30 mph gusts and minimum humidity
values falling into the teens each afternoon appear likely. How
these components align with the fire weather forecast zones that
have drier 1/10-hour fuels could necessitate Fire Weather Watches.
Winds will become more marginal Monday into Tuesday as an H7-H5
ridge develops over WY. H7 temperatures will slowly warm through
early next week from 5C Saturday upwards to 10C to pushing 12C by
mid-week across the GEFS ensemble quartile spread. This will help
support above normal high and low temperatures but not close to any
records. Likewise, the suppressing ridge will keep precipitation
chances below 5-10% if that high, Sunday to Wednesday per the NBM
ensemble spread. Moreso, precipitation chances don't rise above 20%
through into the beginning of October. Minimum relative humidity
values should increase slightly into mid to late week but still
dropping into the low teens to low 20 percentiles per NBM ensembles.

Pattern confidence decreases slightly into late next week but
overall west to southwest flow appears likely with the approach of a
stronger trough over MT. However, most the the dynamic lifting
remaining farther north with the potential for a surface front nearing
the region per ensemble potential and a few deterministic runs. Next
best chance of precipitation could be next Saturday.

&&

.AVIATION...(For the 00Z TAFS through 00Z Friday evening)
Issued at 547 PM MDT Thu Sep 21 2023

The terminal forecast over the next 12-24 hours will be an active
scenario for most sites. VCTS and VCSH are expected to slowly move
from southwest to northeast between 0z-6z, with KCDR seeing the
longest window of precipitation into the overnight hours. KLAR and
KRWL will remain VFR overnight, and winds gusts picking up by
tomorrow morning to 25-35 knots. KCYS will see the potential for
VCTS to wind down early this evening, and weak upslope flow will
create low CIGS overnight, ultimately in the form of IFR/LIFR
through approximately 15z Friday.

The NE Panhandle terminals will also be impacted by the low CIGs
this evening and overnight. Flight conditions will transition from
MVFR to IFR/LIFR between 6z-15z, and the potential for reduction
in VIS also will become apparent close to the 12z-15z timeframe
for these terminals. Additionally, once the VCSH and VCTS push
northeast, VRB winds with gusts to less than 12 knots will be
expected.

&&

.FIRE WEATHER...
Issued at 300 PM MDT Thu Sep 21 2023

Fire weather concerns will be minimal Friday and Saturday as a cold
front will bring increase moisture and cooler temperatures. Although
RHs will be above 15 percent, very strong winds will accompany this
front. On Friday, areas west of the Laramie Range could see gusts up
to 35 MPH. Even stronger winds are likely across the southeast
Wyoming winds prones early Saturday morning into Saturday afternoon
with gusts up to 65 MPH possible. Fire weather concerns return
Sunday with minimum RHs falling below 15 percent in much of
southeast Wyoming with wind gusts up to 30 MPH. Fire weather
concerns increase into next week.

&&

.CYS WATCHES/WARNINGS/ADVISORIES...
WY...High Wind Watch from late Friday night through Saturday
     afternoon for WYZ106-110-116>118.

NE...None.
&&

SHORT TERM...SF
LONG TERM...JSA
AVIATION...BW
FIRE WEATHER...SF

Hazardous Weather Outlook
National Weather Service Cheyenne WY
312 PM MDT Thu Sep 21 2023

NEZ020-054-055-WYZ101-103>105-107>109-111>115-119-222045-
Banner County-Kimball County-Cheyenne County-
Converse County Lower Elevations-North Laramie Range-
Ferris/Seminoe/Shirley Mountains-Shirley Basin-East Platte County-
Goshen County-Central Carbon County-Southwest Carbon County-
Sierra Madre Range-Upper North Platte River Basin-Snowy Range-
Laramie Valley-East Laramie County-
312 PM MDT Thu Sep 21 2023

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

Scattered showers and thunderstorms possible this afternoon.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

Another round of scattered showers and thunderstorms possible
Friday afternoon. A strong cold front Friday night will lead to
breezy conditions across the area on Saturday.

.Spotter information statement...

Spotters are encouraged to report severe weather to the NWS.

WYZ106-110-116>118-222045-
Central Laramie Range and Southwest Platte County-
North Snowy Range Foothills-South Laramie Range-
South Laramie Range Foothills-Central Laramie County-
312 PM MDT Thu Sep 21 2023

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

Scattered showers and thunderstorms possible this afternoon with
breezy conditions.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

Another round of scattered showers and thunderstorms possible
Friday afternoon. A strong cold front Friday night will lead to
windy conditions across the southeast Wyoming wind prones early
Saturday morning into Saturday afternoon. Please refer to the High
Wind Watches currently in effect for more details.

.Spotter information statement...

Spotter activation will not be needed.

NEZ002-003-019-021-095-096-WYZ102-222045-
Dawes County-Box Butte County-Scotts Bluff County-Morrill County-
Northern Sioux County-Southern Sioux County-Niobrara County-
312 PM MDT Thu Sep 21 2023

This hazardous weather outlook is for portions of panhandle
Nebraska and east central Wyoming.

.DAY ONE...THIS AFTERNOON AND TONIGHT

Scattered thunderstorms possible this afternoon. An isolated
strong to severe storm is possible.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

Another round of potentially strong to severe storms possible on
Friday. Storms could contain gusty winds and hail. A strong cold
front Friday night will lead to breezy conditions across the area
on Saturday.

.Spotter information statement...

Spotters are encouraged to report severe weather to the NWS.