Alert archive / Wyoming / High Wind Warnings in 2023
High Wind Warning 6, NWS Riverton, WY
NWS Riverton, WY issued this high wind warning at Feb 20, 2023, 2:00 AM MST for 4 counties in Wyoming. It took effect at Feb 20, 2023, 8:00 PM MST. It was in force for 18 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Feb 20, 2023, 2:00 AM MST (09:00 UTC)
- In effect from
- Feb 20, 2023, 8:00 PM MST
- Expired
- Feb 21, 2023, 2:00 PM MST
- In force
- 18 hr
- Issued by
- NWS Riverton, WY
Counties Fremont County, WY, Natrona County, WY, Park County, WY, Sweetwater County, WY
The radar
The Riverton/Lander radar (KRIW), 2 km from the middle of the area, began a volume at 09:01 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, 9.0 hours before the alert went out and 7 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
- 2026 m above ground
- 0-6 km bulk shear
- 71 kt
- 0-1 km storm-relative helicity
- 47 m²/s²
- 0-3 km storm-relative helicity
- 339 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Feb 19, 9:35 PM MST, 4 hours 25 minutes earlier.
Area forecast discussion, Feb 19, 9:35 PM MST, 4 hours 25 minutes before
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</html>Hazardous weather outlook, Feb 19, 1:59 PM MST, 12 hours 1 minute before
Hazardous Weather Outlook National Weather Service Riverton WY 159 PM MST Sun Feb 19 2023 WYZ001>020-022>030-201400- 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- 159 PM MST Sun Feb 19 2023 ...An Impactful Winter Storm to Arrive Monday and Continue through Wednesday... ...Various High Wind and Winter Weather Highlights are in Effect through Wednesday... This Hazardous Weather Outlook is for Western and Central Wyoming. .DAY ONE...This Afternoon and Tonight. Snow begins across northwest Wyoming late Sunday afternoon and continues overnight. Wind increases Sunday evening and becomes strong in the Upper Wind River Basin and Cody Foothills, with gusts as high as 65 mph tonight. Localized blowing and drifting snow is likely. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Monday through Wednesday...Several rounds of snow occur over western portions of the state and produce significant snow amounts in the western mountains and valleys. Snow and wind increases east of the Continental Divide late Tuesday, with the greatest impacts Tuesday night into Wednesday. Potential accumulations of 6 to 14 inches. Strong west wind gusts of 40 to 60 mph are likely across central Wyoming Monday night and Tuesday, before a north wind of 25 to 40 mph arrives behind a strong cold front for Tuesday night and Wednesday. Wednesday Night through Thursday Night...Very cold temperatures likely, with overnight low temperatures 10 below to as much as 25 below zero. Thursday high temperatures may struggle to get out of the single digits east of the Continental Divide. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions.
The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 20, 2:34 AM MST | Blizzard Warning | RIW | Fremont, Johnson, Natrona, Sweetwater | 65 hr |
Nearby
High Wind Warnings in Wyoming, 2023Every high wind warning in 2023
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.