Alert archive / Wyoming / High Wind Watches in 2021
High Wind Watch 52, NWS Cheyenne, WY
NWS Cheyenne, WY issued this high wind watch at Dec 19, 2021, 9:17 PM MST for 4 counties in Wyoming. It took effect at Dec 20, 2021, 11:00 AM MST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Dec 19, 2021, 9:17 PM MST (04:17 UTC)
- In effect from
- Dec 20, 2021, 11:00 AM MST
- Expired
- Dec 20, 2021, 3:55 AM MST
- In force
- Issued by
- NWS Cheyenne, WY
Counties Albany County, WY, Carbon County, WY, Laramie County, WY, Platte County, WY
The radar
The Cheyenne radar (KCYS), 88 km from the middle of the area, began a volume at 04:22 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Riverton, WY (KRIW), launched 00:00Z, 4.3 hours before the alert went out and 278 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2608 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 151 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
341 WWUS75 KCYS 200417 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 917 PM MST Sun Dec 19 2021 WYZ110-201230- /O.NEW.KCYS.HW.A.0052.211220T1800Z-211221T1200Z/ /O.CON.KCYS.HW.W.0060.000000T0000Z-211220T0600Z/ North Snowy Range Foothills- Including the cities of Arlington and Elk Mountain 917 PM MST Sun Dec 19 2021 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... ...HIGH WIND WATCH IN EFFECT FROM MONDAY MORNING THROUGH LATE MONDAY NIGHT... * WHAT...For the High Wind Warning, southwest winds 35 to 40 mph with gusts up to 60 mph. For the High Wind Watch, southwest winds 35 to 45 mph with gusts up to 70 mph possible. * WHERE...North Snowy Range Foothills. * WHEN...For the High Wind Warning, until 11 PM MST this evening. For the High Wind Watch, from Monday morning through late Monday night. * IMPACTS...Mainly to transportation. Strong cross winds will be hazardous to light weight and high profile vehicles, including campers and tractor trailers. There will be a high risk for vehicle blow overs, particularly along north to south oriented roadways. 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. && $$ WYZ106-201230- /O.NEW.KCYS.HW.A.0052.211220T1800Z-211221T1200Z/ /O.CON.KCYS.HW.W.0060.000000T0000Z-211220T0600Z/ Central Laramie Range and Southwest Platte County- Including the city of Bordeaux 917 PM MST Sun Dec 19 2021 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... ...HIGH WIND WATCH IN EFFECT FROM MONDAY MORNING THROUGH LATE MONDAY NIGHT... * WHAT...For the High Wind Warning, west winds 30 to 40 mph with gusts up to 60 mph. For the High Wind Watch, southwest winds 30 to 40 mph with gusts up to 70 mph possible. * WHERE...Central Laramie Range and Southwest Platte County. * WHEN...For the High Wind Warning, until 11 PM MST this evening. For the High Wind Watch, from Monday morning through late Monday night. * IMPACTS...Mainly to transportation. Strong cross winds will be hazardous to light weight and high profile vehicles, including campers and tractor trailers. There will be a high risk for vehicle blow overs, particularly along north to south oriented roadways. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$
2 follow-up statements
068 WWUS75 KCYS 200542 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 1042 PM MST Sun Dec 19 2021 WYZ110-201345- /O.EXP.KCYS.HW.W.0060.000000T0000Z-211220T0600Z/ /O.CON.KCYS.HW.A.0052.211220T1800Z-211221T1200Z/ North Snowy Range Foothills- Including the cities of Arlington and Elk Mountain 1042 PM MST Sun Dec 19 2021 ...HIGH WIND WATCH REMAINS IN EFFECT FROM MONDAY MORNING THROUGH LATE MONDAY NIGHT... ...HIGH WIND WARNING WILL EXPIRE AT 11 PM MST THIS EVENING... * WHAT...Southwest winds 35 to 45 mph with gusts up to 70 mph possible Monday afternoon and evening. * WHERE...North Snowy Range Foothills. * WHEN...For the High Wind Warning, until 11 PM MST this evening. For the High Wind Watch, from Monday morning through late Monday night. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ WYZ106-201345- /O.EXP.KCYS.HW.W.0060.000000T0000Z-211220T0600Z/ /O.CON.KCYS.HW.A.0052.211220T1800Z-211221T1200Z/ Central Laramie Range and Southwest Platte County- Including the city of Bordeaux 1042 PM MST Sun Dec 19 2021 ...HIGH WIND WATCH REMAINS IN EFFECT FROM MONDAY MORNING THROUGH LATE MONDAY NIGHT... ...HIGH WIND WARNING WILL EXPIRE AT 11 PM MST THIS EVENING... * WHAT...Southwest winds 30 to 40 mph with gusts up to 70 mph possible Monday afternoon and evening. * WHERE...Central Laramie Range and Southwest Platte County. * WHEN...For the High Wind Warning, until 11 PM MST this evening. For the High Wind Watch, from Monday morning through late Monday night. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$
902 WWUS75 KCYS 201055 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 355 AM MST Mon Dec 20 2021 WYZ110-210000- /O.UPG.KCYS.HW.A.0052.211220T1800Z-211221T1200Z/ /O.NEW.KCYS.HW.W.0061.211221T0000Z-211222T1800Z/ North Snowy Range Foothills- Including the cities of Arlington and Elk Mountain 355 AM MST Mon Dec 20 2021 ...HIGH WIND WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST WEDNESDAY... * WHAT...West to southwest winds 35 to 45 MPH with gusts up to 65 MPH expected. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80 between Laramie and Rawlins. * WHEN...5 PM MST today until at least 11 AM MST Wednesday. * IMPACTS...Mainly to transportation. Strong cross winds will be hazardous to light weight and high profile vehicles, including campers and tractor trailers. There will be a high risk for vehicle blow overs, particularly along north to south oriented roadways. 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. && $$ WYZ106-210000- /O.UPG.KCYS.HW.A.0052.211220T1800Z-211221T1200Z/ /O.NEW.KCYS.HW.W.0061.211221T0300Z-211221T1800Z/ Central Laramie Range and Southwest Platte County- Including the city of Bordeaux 355 AM MST Mon Dec 20 2021 ...HIGH WIND WARNING IN EFFECT FROM 8 PM THIS EVENING TO 11 AM MST TUESDAY... * WHAT...West winds 35 to 50 MPH with gusts up to 70 MPH expected. * WHERE...Central Laramie Range including Bordeaux along Interstate 25 between Chugwater and Wheatland. * WHEN...8 PM MST this evening until 11 AM MST Tuesday. A lull in strong winds will occur Tuesday afternoon with the potential for winds to return Tuesday night through Wednesday. * IMPACTS...Mainly to transportation. Strong cross winds will be hazardous to light weight and high profile vehicles, including campers and tractor trailers. There will be a high risk for vehicle blow overs, particularly along north to south oriented roadways. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Wind Warning means a hazardous high wind event is expected or occurring. Sustained wind speeds of at least 40 mph or gusts of 58 mph or more can lead to property damage. && $$ WYZ107-210000- /O.NEW.KCYS.HW.W.0061.211221T0300Z-211221T1800Z/ East Platte County- Including the cities of Wheatland and Guernsey 355 AM MST Mon Dec 20 2021 ...HIGH WIND WARNING IN EFFECT FROM 8 PM THIS EVENING TO 11 AM MST TUESDAY... * WHAT...West winds 35 to 50 MPH with gusts up to 70 MPH expected. * WHERE...East Platte County including Glendo and Wheatland. * WHEN...8 PM MST this evening until 11 AM MST Tuesday. A lull in strong winds will occur Tuesday afternoon with the potential for winds to return Tuesday night through Wednesday. * IMPACTS...Mainly to transportation. Strong cross winds will be hazardous to light weight and high profile vehicles, including campers and tractor trailers. There will be a high risk for vehicle blow overs, particularly along north to south oriented roadways. 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. && $$ WYZ116-117-210000- /O.NEW.KCYS.HW.W.0061.211221T0000Z-211223T0000Z/ South Laramie Range-South Laramie Range Foothills- Including the cities of Buford, Pumpkin Vine, Vedauwoo, Whitaker, Federal, and Horse Creek 355 AM MST Mon Dec 20 2021 ...HIGH WIND WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST WEDNESDAY... * WHAT...West winds 35 to 50 MPH with gusts up to 75 MPH expected. * WHERE...South Laramie Range and adjacent foothills including Interstate 80 between Laramie and Cheyenne. * WHEN...5 PM MST today until 5 PM MST Wednesday. * IMPACTS...Mainly to transportation. Strong cross winds will be hazardous to light weight and high profile vehicles, including campers and tractor trailers. There will be a high risk for vehicle blow overs, particularly along north to south oriented roadways. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Wind Warning means a hazardous high wind event is expected or occurring. Sustained wind speeds of at least 40 mph or gusts of 58 mph or more can lead to property damage. && $$ WYZ101-210000- /O.NEW.KCYS.HW.A.0053.211221T0300Z-211221T1500Z/ Converse County Lower Elevations- Including the cities of Douglas, Glenrock, Bill, and Deer Creek 355 AM MST Mon Dec 20 2021 ...HIGH WIND WATCH IN EFFECT FROM THIS EVENING THROUGH TUESDAY MORNING... * WHAT...West winds 30 to 40 MPH with gusts up to 60 MPH possible. * WHERE...Lower elevations of Converse County including Douglas. * WHEN...8 PM MST today until 8 AM MST Tuesday. Mainly to transportation. Strong cross winds will be hazardous to light weight and high profile vehicles, including campers and tractor trailers. There will be a high risk for vehicle blow overs, particularly along north to south oriented roadways. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ WYZ118-210000- /O.NEW.KCYS.HW.A.0053.211221T0800Z-211222T0000Z/ Central Laramie County- Including the city of Cheyenne 355 AM MST Mon Dec 20 2021 ...HIGH WIND WATCH IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY AFTERNOON... * WHAT...West winds 35 to 45 MPH with gusts up to 65 MPH possible. * WHERE...Central Laramie County including the city of Cheyenne. * WHEN...2 AM MST until 5 PM MST Tuesday. Winds could remain elevated Tuesday night through Wednesday. * IMPACTS...Mainly to transportation. Strong cross winds will be hazardous to light weight and high profile vehicles, including campers and tractor trailers. There will be a high risk for vehicle blow overs, particularly along north to south oriented roadways. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ CLH
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 20, 3:55 AM MST | High Wind Watch | CYS | Converse, Laramie | 10 hr |
| Dec 20, 3:55 AM MST | High Wind Warning | CYS | Albany, Carbon, Converse, Laramie, Platte | 4 days |
Nearby
High Wind Watches in Wyoming, 2021Every high wind watch in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.