Alert archive / Wyoming / High Wind Warnings in 2022
High Wind Warning 1, NWS Riverton, WY
NWS Riverton, WY issued this high wind warning at Jan 3, 2022, 3:01 PM MST for 5 counties in Wyoming. It took effect at Jan 3, 2022, 11:03 PM MST. It was in force for 15 hr. 3 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jan 3, 2022, 3:01 PM MST (22:01 UTC)
- In effect from
- Jan 3, 2022, 11:03 PM MST
- Expired
- Jan 4, 2022, 1:42 PM MST
- In force
- 15 hr
- Issued by
- NWS Riverton, WY
Counties Fremont County, WY, Johnson County, WY, Lincoln County, WY, Natrona County, WY, Sweetwater County, WY
The radar
The Riverton/Lander radar (KRIW), 33 km from the middle of the area, began a volume at 22:03 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jan 4, 3:33 AM MST | NON-TSTM WND GST 58 | 1 Ssw Lander, WY | ASOS STATION KLND LANDER AIRPORT. |
| Jan 4, 3:35 AM MST | NON-TSTM WND GST 69 | 3 Nnw Buffalo, WY | ASOS STATION KBYG BUFFALO AIRPORT. |
| Jan 4, 8:05 AM MST | NON-TSTM WND GST 65 | 8 Se Reliance, WY | ASOS STATION KRKS ROCK SPRINGS AIRPORT. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Riverton, WY (KRIW), launched 12:00Z, 10.0 hours before the alert went out and 32 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
- 2169 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 230 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
792 WWUS75 KRIW 032201 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 301 PM MST Mon Jan 3 2022 WYZ019-020-041400- /O.UPG.KRIW.HW.A.0001.220104T0700Z-220104T2200Z/ /O.NEW.KRIW.HW.W.0001.220104T0900Z-220105T0000Z/ Green Mountains and Rattlesnake Range- Natrona County Lower Elevations- Including the cities of Jeffrey City and Casper 301 PM MST Mon Jan 3 2022 ...HIGH WIND WARNING IN EFFECT FROM 2 AM TO 5 PM MST TUESDAY... * WHAT...West winds 30 to 40 mph with gusts up to 60 mph expected. * WHERE...Green Mountains and Rattlesnake Range and Natrona County Lower Elevations. * WHEN...From 2 AM to 5 PM MST Tuesday. * IMPACTS...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. Use caution if you must drive. && $$ WYZ027>030-041400- /O.EXT.KRIW.HW.A.0001.220105T0900Z-220106T0300Z/ South Lincoln County-Rock Springs and Green River-Flaming Gorge- East Sweetwater County- Including the cities of Kemmerer, Cokeville, Rock Springs, Green River, and Wamsutter 301 PM MST Mon Jan 3 2022 ...HIGH WIND WATCH NOW IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY EVENING... * WHAT...West and northwest winds 30 to 40 mph with gusts up to 65 mph possible. Periods of snow and blowing snow could also lower visibility and make roads slick. * WHERE...East Sweetwater County, South Lincoln County, Rock Springs, Green River, and Flaming Gorge. * WHEN...From late Tuesday night through Wednesday evening. * IMPACTS...Travel could be hazardous, as the combination of wind and snow could greatly reduce visibility and increase the blowover risk. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. Consider not traveling during this timeframe. && $$ For more information from the National Weather Service visit https://weather.gov/riw
5 follow-up statements
474 WWUS75 KRIW 040603 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 1103 PM MST Mon Jan 3 2022 WYZ027>030-041500- /O.EXB.KRIW.HW.W.0001.220104T1000Z-220104T1900Z/ /O.CON.KRIW.HW.A.0001.220105T0900Z-220106T0300Z/ South Lincoln County-Rock Springs and Green River-Flaming Gorge- East Sweetwater County- Including the cities of Kemmerer, Cokeville, Rock Springs, Green River, and Wamsutter 1103 PM MST Mon Jan 3 2022 ...HIGH WIND WARNING IN EFFECT FROM 3 AM TO NOON MST TUESDAY... ...HIGH WIND WATCH REMAINS IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY EVENING... * WHAT...West wind 30 to 40 mph with gusts up to 65 mph. * WHERE...South Lincoln County, and Sweetwater County. * WHEN...High wind warning from 3 AM to noon Tuesday. High wind watch is in effect from late Tuesday night through Wednesday evening. There will be a lull in the high wind event Tuesday afternoon through late Tuesday night. * IMPACTS...Mainly to transportation. Enhanced blowover risk for lightweight and high-profile vehicles, including campers and tractor trailers. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution if you must drive. In a parking lot, park into the wind to minimize the possibility of your car door hitting another parked vehicle. && $$ WYZ010-041500- /O.EXB.KRIW.HW.W.0001.220104T0603Z-220104T1500Z/ Northeast Johnson County- Including the city of Buffalo 1103 PM MST Mon Jan 3 2022 ...HIGH WIND WARNING IN EFFECT UNTIL 8 AM MST TUESDAY... * WHAT...West winds 30 to 40 mph with gusts up to 65 mph. * WHERE...Northeast Johnson County. * WHEN...Until 8 AM Tuesday. * IMPACTS...Mainly to transportation including along Interstate 25 and 90. Enhanced blowover risk for lightweight and high- profile vehicles, including campers and tractor trailers. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution if you must drive. In a parking lot, park into the wind to minimize the possibility of your car door hitting another parked vehicle. && $$ WYZ019-020-041500- /O.CON.KRIW.HW.W.0001.220104T0900Z-220105T0000Z/ Green Mountains and Rattlesnake Range- Natrona County Lower Elevations- Including the cities of Jeffrey City and Casper 1103 PM MST Mon Jan 3 2022 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 2 AM TO 5 PM MST TUESDAY... * WHAT...Southwest 30 to 40 mph with gusts up to 60 mph. Local wind gusts of 70 mph on the ridge tops over the Green and Rattlesnake ranges. * WHERE...Green Mountains and Rattlesnake Range and Natrona County Lower Elevations including Casper area. * WHEN...2 AM to 5 PM Tuesday. * IMPACTS...Mainly to transportation including along Interstate 25 and 90. Enhanced blowover risk for lightweight and high- profile vehicles, including campers and tractor trailers. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution if you must drive. In a parking lot, park into the wind to minimize the possibility of your car door hitting another parked vehicle. && $$ 21
349 WWUS75 KRIW 041026 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 326 AM MST Tue Jan 4 2022 WYZ027>030-050000- /O.CON.KRIW.HW.W.0001.000000T0000Z-220104T1900Z/ /O.CON.KRIW.HW.A.0001.220105T0900Z-220106T0300Z/ South Lincoln County-Rock Springs and Green River-Flaming Gorge- East Sweetwater County- Including the cities of Kemmerer, Cokeville, Rock Springs, Green River, and Wamsutter 326 AM MST Tue Jan 4 2022 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL NOON MST TODAY... ...HIGH WIND WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY EVENING... * WHAT...West wind 30 to 40 mph with gusts up to 65 mph. * WHERE...South Lincoln County, and Sweetwater County. * WHEN...High wind warning through noon today. High wind watch is in effect from late tonight through Wednesday evening. There will be a lull in the high wind event this afternoon through late tonight. * IMPACTS...Mainly to transportation. Enhanced blowover risk for lightweight and high-profile vehicles, including campers and tractor trailers. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution if you must drive. In a parking lot, park into the wind to minimize the possibility of your car door hitting another parked vehicle. && $$ WYZ019-020-050000- /O.CON.KRIW.HW.W.0001.000000T0000Z-220105T0000Z/ Green Mountains and Rattlesnake Range- Natrona County Lower Elevations- Including the cities of Jeffrey City and Casper 326 AM MST Tue Jan 4 2022 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Southwest 30 to 40 mph with gusts up to 60 mph. Local wind gusts of 70 mph along Outer Drive on the south side of Casper, and on ridges in the Green and Rattlesnake ranges. * WHERE...Green Mountains and Rattlesnake Range and Natrona County Lower Elevations including Casper area. This also impacts Beaver Rim, and Jeffrey City along Highway 287, 789. * WHEN...Now through 5 PM Today. * IMPACTS...Mainly to transportation including along Interstate 25 and 90. Enhanced blowover risk for lightweight and high- profile vehicles, including campers and tractor trailers. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution if you must drive. In a parking lot, park into the wind to minimize the possibility of your car door hitting another parked vehicle. && $$ WYZ010-041500- /O.CON.KRIW.HW.W.0001.000000T0000Z-220104T1500Z/ Northeast Johnson County- Including the city of Buffalo 326 AM MST Tue Jan 4 2022 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 8 AM MST THIS MORNING... * WHAT...West winds 30 to 40 mph with gusts up to 65 mph. * WHERE...Northeast Johnson County. The strongest wind gust at the Buffalo Airport has been 62 mph at 154 AM. * WHEN...Until 8 AM this morning. * IMPACTS...Mainly to transportation including along Interstates 25 and 90. Enhanced blowover risk for lightweight and high- profile vehicles, including campers and tractor trailers. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution if you must drive. In a parking lot, park into the wind to minimize the possibility of your car door hitting another parked vehicle. && $$ Team Riverton/21
027 WWUS75 KRIW 041454 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 754 AM MST Tue Jan 4 2022 WYZ010-041600- /O.EXP.KRIW.HW.W.0001.000000T0000Z-220104T1500Z/ Northeast Johnson County- Including the city of Buffalo 754 AM MST Tue Jan 4 2022 ...HIGH WIND WARNING WILL EXPIRE AT 8 AM MST THIS MORNING... Wind speeds have fallen below warning thresholds, but gusts of 30 to 40 mph will remain possible this morning. Therefore, the high wind warning will be allowed to expire.. $$ WYZ027>030-042300- /O.CON.KRIW.HW.W.0001.000000T0000Z-220104T1900Z/ /O.CON.KRIW.HW.A.0001.220105T0900Z-220106T0300Z/ South Lincoln County-Rock Springs and Green River-Flaming Gorge- East Sweetwater County- Including the cities of Kemmerer, Cokeville, Rock Springs, Green River, and Wamsutter 754 AM MST Tue Jan 4 2022 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL NOON MST TODAY... ...HIGH WIND WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY EVENING... * WHAT...For the High Wind Warning, west winds 25 to 35 mph with gusts up to 55 mph. For the High Wind Watch, west winds 30 to 40 mph with gusts up to 60 mph possible. * WHERE...East Sweetwater County, South Lincoln County, Rock Springs and Green River and Flaming Gorge. * WHEN...For the High Wind Warning, until noon MST today. For the High Wind Watch, from late tonight through Wednesday evening. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ WYZ019-020-042300- /O.CON.KRIW.HW.W.0001.000000T0000Z-220105T0000Z/ Green Mountains and Rattlesnake Range- Natrona County Lower Elevations- Including the cities of Jeffrey City and Casper 754 AM MST Tue Jan 4 2022 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...West winds 30 to 40 mph with gusts up to 60 mph. * WHERE...Green Mountains and Rattlesnake Range and Natrona County Lower Elevations. * WHEN...Until 5 PM MST this afternoon. * 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. && $$ For more information from the National Weather Service visit https://weather.gov/riw
117 WWUS75 KRIW 041801 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 1101 AM MST Tue Jan 4 2022 WYZ027>030-050600- /O.CAN.KRIW.HW.W.0001.000000T0000Z-220104T1900Z/ /O.CON.KRIW.HW.A.0001.220105T0900Z-220106T0300Z/ South Lincoln County-Rock Springs and Green River-Flaming Gorge- East Sweetwater County- Including the cities of Kemmerer, Cokeville, Rock Springs, Green River, and Wamsutter 1101 AM MST Tue Jan 4 2022 ...HIGH WIND WARNING IS CANCELLED... ...HIGH WIND WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY EVENING... * WHAT...Winds have fallen below High Wind thresholds for today, therefore the Warning has been cancelled. For late tonight through Wednesday, west winds 30 to 40 mph with gusts up to 60 mph are possible. * WHERE...East Sweetwater County, South Lincoln County, Rock Springs and Green River and Flaming Gorge. This includes portions of I-80 in southern Wyoming. * WHEN...High Wind Watch in effect from late tonight through Wednesday evening. * IMPACTS...Travel could be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ WYZ019-020-050000- /O.CON.KRIW.HW.W.0001.000000T0000Z-220105T0000Z/ Green Mountains and Rattlesnake Range- Natrona County Lower Elevations- Including the cities of Jeffrey City and Casper 1101 AM MST Tue Jan 4 2022 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...West winds 30 to 40 mph with gusts up to 60 mph. * WHERE...Green Mountains and Rattlesnake Range and Natrona County Lower Elevations. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...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. Use caution if you must drive. && $$ For more information from the National Weather Service visit https://weather.gov/riw
445 WWUS75 KRIW 042042 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 142 PM MST Tue Jan 4 2022 WYZ019-020-042145- /O.CAN.KRIW.HW.W.0001.000000T0000Z-220105T0000Z/ Green Mountains and Rattlesnake Range- Natrona County Lower Elevations- Including the cities of Jeffrey City and Casper 142 PM MST Tue Jan 4 2022 ...HIGH WIND WARNING IS CANCELLED... Winds associated with today's cold front have moved through the region, and winds are now below high impact criteria. Winds will continue to decrease through the afternoon and evening hours. $$ WYZ027-042145- /O.CAN.KRIW.HW.A.0001.220105T0900Z-220106T0300Z/ South Lincoln County- Including the cities of Kemmerer and Cokeville 142 PM MST Tue Jan 4 2022 ...HIGH WIND WATCH IS CANCELLED... Impactful strong winds are still expected Wednesday, but due to an increase in forecast snowfall amounts and intensity, this area will be covered by winter weather highlights instead. $$ WYZ028>030-051400- /O.UPG.KRIW.HW.A.0001.220105T0900Z-220106T0300Z/ /O.NEW.KRIW.HW.W.0002.220105T0900Z-220106T0300Z/ Rock Springs and Green River-Flaming Gorge-East Sweetwater County- Including the cities of Rock Springs, Green River, and Wamsutter 142 PM MST Tue Jan 4 2022 ...HIGH WIND WARNING IN EFFECT FROM 2 AM TO 8 PM MST WEDNESDAY... * WHAT...West and northwest winds 30 to 40 mph with gusts up to 65 mph possible. Periods of snow and blowing snow could also lower visibility and make roads slick. * WHERE...Rock Springs and Green River, Flaming Gorge and East Sweetwater County. This includes I-80 across portions of southern Wyoming. * WHEN...From 2 AM to 8 PM MST Wednesday. * IMPACTS...Travel could be hazardous, as the combination of wind and snow could greatly reduce visibility and increase the blowover risk. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. Use caution if you must drive. && $$ For more information from the National Weather Service visit https://weather.gov/riw
What forecasters said that day
The local office's own words before this high wind warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Riverton, WY wrote its last area forecast discussion before this high wind warning went out at Jan 3, 10:30 AM MST, 4 hours 31 minutes earlier.
Area forecast discussion, Jan 3, 10:30 AM MST, 4 hours 31 minutes before
Area Forecast Discussion National Weather Service Riverton WY 1030 AM MST Mon Jan 3 2022 .SHORT TERM...Today through Wednesday night There is a LOT to talk about today. So, this discussion may end up being the great American weather novel. In addition, there will be contrast between West and East of the Divide. So, we will split the discussion that way. West of the Divide...Today will be the quietest period of the short term. Ridging will hold on for about 12 to 18 more hours and bring dry conditions and near normal temperatures, although there will be a bit more a breeze in the north than previous days. Then, after being down for maintenance, the snow machine will likely switch on again for the rest of the period. A pair of waves will be the weather makers. The first one looks like the appetizer. This system has plenty of jet support, with the area in the left front quadrant of an 150 knot jet streak. The limiting factor will be that it is a fast mover so it will not be able to pile up snow over a long period. The advisory may be a bit quick on the draw, but we will leave it as is. The heaviest snow will fall after midnight through the morning. The real epicenter would be between 3 and 9 am, when the best jet dynamics and trough axis should maximize left. There could be some heavy snowfall rates though, over an inch an hour at times during the time frame.The region gets into the unfavorable side of the jet after noon and snow should become lighter for around 12 hours or so. The southern portions of the area will then be in the right front quadrant of the jet, the downward forcing portion. This will make things favorable for strong to high wind. Most models show 700 millibar winds climbing to 50 knots or over Tuesday with both the NAM and GFS having sustained high wind at Rock Springs. As a result, we have hoisted a high wind watch across Sweetwater and southern Lincoln county starting Tuesday morning and continuing through Wednesday. There will be a lull in the winds Tuesday night after trough passage and the winds decouple for a time. The second system then moves in for late Tuesday night into Wednesday. This system looks to have more moisture to work with and will be longer lasting. As a result, amounts look higher. There will also be wind with it, so more highlights will likely be needed. With the higher amounts, I could see the potential for warnings. Like the previous system, this one will be heavily jet driven, with another 140 knot jet max moving into the area. The models are in fairly good agreement with the best forcing during Wednesday morning, then the best dynamics and trough axis move through. Again, there could be some rather heavy snowfall rates during this time, possibly over an inch an hour at times. The snow from this one should taper off around sundown Wednesday, with another short break for Wednesday night. Now for the windy side of the system. After a lull, high winds will likely come back across the south on Wednesday as the second system moves through. Ingredients are the same, with 700 millibar winds approaching 60 knots and downward forcing from the right front quadrant of the jet. The NAM has 45 knots sustained at Rock Springs on Wednesday, although this guidance does tend to be a bit overcooked this far out. It does look like a good bet for high wind though. It could even see watches a bit further north toward the Green River Basin but not enough confidence to include at this time. Wind should then begin to decrease Wednesday night as the trough moves away, but may stay gusty much of the night. East of the Divide...The main concern for the first part of the period here is wind. We have some borderline high winds this morning, but this is only along Wyoming Boulevard and no where else right now. Mid level winds do decrease somewhat today, so the wind should subside somewhat. So, we will not issue any warnings for today at this time. Things change tonight as the system that was mentioned in the novel I wrote above approaches the area. This will tighten the pressure gradient across the area. With 700 millibar winds again approaching 50 to 55 knots across more of the area, we have hoisted a high wind watch for the wind prone areas in the Green Mountains and Natrona County starting tonight and continuing into Tuesday afternoon. This is when an Arctic Front should shut off the wind. More on that below. The first Pacific system will then begin to cross the Divide early Tuesday morning. As for snow from the first system, there could be some across mainly the north as it moves in. Most of the area is on the wrong side of the jet though, so we kept POPs and QPF low for the time being. The best chance of some accumulation would be in Johnson County where some moisture may over run an advancing back door Arctic Boundary on Tuesday afternoon. Combined with gusty winds, things could get nasty here for a time. But even here, confidence is low. The snow is likely to be banded and very hard to pinpoint a few hours out, let along more than 24 hours. And speaking of the Arctic front, it will slowly slide through the area, setting up near the Continental Divide by Wednesday. This will make temperature forecasting a nightmare. A place like Buffalo, which will see it first, may end up with falling temperatures on Tuesday, ending up in the single digits by sunset. Meanwhile, a place like Riverton, with a gusty wind ahead of it, may rise into the 40s ahead of the front. So confidence is low here. And the final chapter will be when the second and more potent system crosses the Divide on Wednesday. This will bring a much better chance of snow to many areas. However, there is still much uncertainty with the details. This will be jet driven, not like our usual upslope situation. And these snows are the banded variety. And as a result, very hard to nail down exactly where, especially more than 48 hours out. Most areas should have a decent chance of some though, so we went with likely POPs for most locations. At this time, the best guess would be from around Cody southeastward through Casper. But, there is still a fair amount of model disagreement since it all depends on the jet position and a 50 mile change can make a big difference. It could get nasty though with a dry, powdery snow and gusty winds blowing it around though. Quieter weather should move in for a brief period Wednesday night as the system moves away. .LONG TERM...Thursday through Sunday After a couple of bouts of significant snow mainly over the west in the short-term, there looks to be a good chance of another round of significant snow across the west in the Thursday and Thursday night time frame. A moist, westerly isentropic upglide, upper level jet dynamics, and weak disturbances in the flow could result in significant snow over the west Thursday into Thursday night. Some snow could spill east of the Divide, but only minor snow accumulations are expected. Strong to possibly high wind could occur in typical spots from eastern Sweetwater County northeast to Natrona County, as well as the Absaroka Mountains. The Arctic air mass is expected to begin retreating away from the area Thursday into Friday. Medium range models tend to be too fast on warming temperatures especially in trapped basins/valleys where a very strong surface inversion should be in place. Have cooled temperatures in basins/valleys Thursday and Friday, but kept a warm up in typical wind prone areas. A moist westerly flow will keep good chances of snow over the far west/northwest Friday, before a trough pulls across the area Friday night and Saturday. As this occurs light to moderate snowfall is expected with the greatest impact over the west. This snowfall will also be aided by right-rear dynamics from a strong upper jet. In wake of this trough, models currently show a dry conditions late Saturday night and Sunday. && .AVIATION...(For the 18Z TAFS through 18Z Tuesday morning) Issued at 1030 AM Mon Jan 3 2022 East of the Divide...KCOD/KCPR/KLND/KRIW/KWRL Terminals VFR conditions will occur through the period with increasing mid to high-level cloudiness. The main issue will be windy west to southwest flow on the lee side of mountain ranges, and from South Pass to Natrona County including KCPR. Breezy winds are also expected at times at KCOD. If winds are not westerly or become light, there will be strong westerly low-level wind shear at KCOD especially tonight. West of the Divide...KBPI/KJAC/KPNA/KRKS Terminals VFR conditions are expected through at least 00Z with an increasing mid to high-level cloud. Snow is expected to begin developing over the far west between 03Z and 06Z Tuesday with lowering ceilings especially at KJAC. MVFR ceilings and IFR visibility in snow are expected to develop over the far west (including KJAC) between 04Z and 08Z Tuesday. Once these conditions develop they are expected to remain in place for the rest of the TAF period. Farther southeast into the Upper Green River Basin, some snow showers are expected, but confidence is only high enough to insert some VCSH at KBPI and KPNA. KRKS will remain dry with mainly light winds through the period. Please see the Aviation Weather Center and/or CWSU ZDV and ZLC for the latest information on icing and turbulence forecasts. && .FIRE WEATHER... High pressure will bring one more dry day today. A gusty, to at times, strong wind will continue from the Red Desert through Casper and in the lee of the Absarokas. Relative humidity should remain above critical levels. Mixing and smoke dispersal will be generally poor. A weather system will bring snow to the west late tonight into Tuesday morning. High winds are likely across southern Wyoming and Natrona County on Tuesday. && .RIW WATCHES/WARNINGS/ADVISORIES... High Wind Watch from late tonight through Wednesday evening for WYZ027>030. High Wind Watch from late tonight through Tuesday afternoon for WYZ019-020. Winter Weather Advisory from 8 PM this evening to 11 AM MST Tuesday for WYZ001-012>014-023>025. && SHORT TERM...Hattings LONG TERM...Murrell AVIATION...Murrell FIRE WEATHER...Hattings
Hazardous weather outlook, Jan 3, 3:56 AM MST, 11 hours 5 minutes before
Hazardous Weather Outlook National Weather Service Riverton WY 356 AM MST Mon Jan 3 2022 WYZ001>020-022>030-041300- 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- 356 AM MST Mon Jan 3 2022 ...Winter Weather Advisory In Effect for the far west from tonight through Tuesday morning... ...High Wind Watch for the Green Mountains and Natrona County from late tonight through Tuesday... ...High Wind Watch for Sweetwater and southern Lincoln Counties from Tuesday morning through Wednesday evening... This Hazardous Weather Outlook is for Western and Central Wyoming. .DAY ONE...Today and Tonight. Strong winds are likely from the Red Desert through Casper and in the Lee of the Absarokas. Snow returning to the western mountains tonight. The heaviest snow is expected after 2 am. High winds are possible from the Green Mountains through Natrona County tonight. Please see High Wind Watch for details. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Tuesday...Snow continuing over the far west, tapering off in the afternoon. A chance of light snow in northern Wyoming Tuesday. Strong winds possible in Johnson County. Strong to potentially high winds in southern Wyoming and Natrona County. Please see High Wind Watch for details. Tuesday Night into Wednesday...Significant snow possible over the west with accumulating snow potential east of the Divide Wednesday. High winds possible across Sweetwater and southern Lincoln Counties. Thursday and Friday...Significant snow is probable at times over the west especially Thursday into Thursday evening based on current data. Saturday...Chances of snow continue mainly over the west. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today or tonight. TEAM RIVERTON
In the hours before
Special weather statement, Jan 3, 2:23 PM MST, 38 minutes before
Special Weather Statement National Weather Service Riverton WY 223 PM MST Mon Jan 3 2022 WYZ003-040900- Cody Foothills- Including the cities of Clark, Cody, and Meeteetse 223 PM MST Mon Jan 3 2022 ...Strong Winds Today and Tonight... This is a special weather statement from the National Weather Service Office in Riverton. * WHAT...West winds 20 to 30 mph with gusts to 40 to 50 mph. Occasional gusts to 60 mph are possible in the vicinity of Clark. * WHERE...Cody Foothills, especially in the vicinity of Clark. * WHEN...Through Tonight. * ADDITIONAL DETAILS...Be prepared for sudden wind gusts on area roads. Lightweight and high profile vehicles will be at risk to blow over. WYZ019-020-040900- Green Mountains and Rattlesnake Range- Natrona County Lower Elevations- Including the cities of Jeffrey City and Casper 223 PM MST Mon Jan 3 2022 ...Strong Winds Today and Tonight... This is a special weather statement from the National Weather Service Office in Riverton. * WHAT...West winds 25 to 35 mph with gusts to 45 to 55 mph. Gusts of 60 to 65 mph will be possible across higher peaks in the mountains and along Outer Drive (Wyoming Boulevard) on the south side of Casper. * WHERE...Green Mountain and Rattlesnake Ranges and lower elevations of Natrona County, particularly the Beaver Rim to Casper corridor. * WHEN...Through Tonight. * ADDITIONAL DETAILS...Be prepared for sudden wind gusts on area roads. Lightweight and high profile vehicles will be at risk to blow over.
The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 3, 3:05 AM MST | High Wind Watch | RIW | Fremont, Lincoln, Natrona, Sweetwater | 35 hr |
| Jan 3, 3:17 PM MST | Winter Storm Watch | RIW | Fremont, Lincoln, Sublette, Teton | 23 hr |
Nearby
High Wind Warnings in Wyoming, 2022Every high wind warning in 2022
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.