Alert archive / Nebraska / Winter Weather Advisories in 2021
Winter Weather Advisory 10, NWS Cheyenne, WY
NWS Cheyenne, WY issued this winter weather advisory at Feb 12, 2021, 9:50 AM MST for Banner County, Morrill County, Nebraska. It took effect at Feb 13, 2021, 5:00 PM MST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Feb 12, 2021, 9:50 AM MST (16:50 UTC)
- In effect from
- Feb 13, 2021, 5:00 PM MST
- Expired
- Feb 12, 2021, 8:45 PM MST
- In force
- Issued by
- NWS Cheyenne, WY
Counties Banner County, NE, Morrill County, NE
The radar
The Cheyenne radar (KCYS), 132 km from the middle of the area, began a volume at 16:55 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
Denver, CO (KDNR), launched 12:00Z, 4.8 hours before the alert went out and 196 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
- 692 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 165 m²/s²
- 0-3 km storm-relative helicity
- 218 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter weather advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Cheyenne, WY wrote its last area forecast discussion before this winter weather advisory went out at Feb 12, 4:37 AM MST, 5 hours 13 minutes earlier.
Area forecast discussion, Feb 12, 4:37 AM MST, 5 hours 13 minutes before
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</html>Hazardous weather outlook, Feb 12, 3:35 AM MST, 6 hours 15 minutes before
Hazardous Weather Outlook National Weather Service Cheyenne WY 335 AM MST Fri Feb 12 2021 WYZ103>105-109-111-113-115-116-131045- North Laramie Range-Ferris/Seminoe/Shirley Mountains- Shirley Basin-Central Carbon County-Southwest Carbon County- Upper North Platte River Basin-Laramie Valley-South Laramie Range- 335 AM MST Fri Feb 12 2021 This hazardous weather outlook is for portions of south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT Periods of light to moderate snow will continue today and tonight. Accumulations of 2 to 4 inches are expected. Gusty winds up to 35 mph will produce areas of blowing snow and reduced visibilities. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY Very cold temperatures and wind chills will impact the area Saturday through Monday with periods of light snow. .Spotter information statement... Spotters are encouraged to report snow, blowing snow, or other significant weather to the National Weather Service in Cheyenne. WYZ110-131045- North Snowy Range Foothills- 335 AM MST Fri Feb 12 2021 This hazardous weather outlook is for portions of south central Wyoming. .DAY ONE...TODAY AND TONIGHT The Winter Weather Advisory remains in effect until 8 PM this evening. Total snowfall accumulations of 2 to 5 inches are expected. Gusty winds up to 40 mph will produce areas of blowing snow and reduced visibilities. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY Very cold temperatures and wind chills will impact the area Saturday through Monday with periods of light snow. .Spotter information statement... Spotters are encouraged to report snow, blowing snow, or other significant weather to the National Weather Service in Cheyenne. NEZ002-003-019>021-095-096-WYZ101-102-106>108-131045- Dawes-Box Butte-Scotts Bluff County-Banner County-Morrill- North Sioux-South Sioux-Converse County Lower Elevations- Niobrara County-Central Laramie Range and Southwest Platte County- East Platte County-Goshen County- 335 AM MST Fri Feb 12 2021 This hazardous weather outlook is for portions of the western Nebraska Panhandle...east central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT Periods light to moderate snow will develop today and continue tonight. Accumulations of 2 to 4 inches are expected. Winter Weather Advisories are in effect. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY Light to moderate snow will linger through Saturday with an additional 1 to 2 inches expected. Very cold temperatures and wind chills will affect the area Saturday through Monday. .Spotter information statement... Spotters are encouraged to report snow, blowing snow, or other significant weather to the National Weather Service in Cheyenne. WYZ112-114-131045- Sierra Madre Range-Snowy Range- 335 AM MST Fri Feb 12 2021 This hazardous weather outlook is for portions of south central Wyoming. .DAY ONE...TODAY AND TONIGHT A Winter Storm Warning remains in effect. Periods of moderate to heavy snow will occur along with gusty winds producing blowing and drifting snow. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY The Winter Storm Warning continues until 11 AM Sunday. Total snow accumulations of 24 to 30 inches are expected. Very cold temperatures and wind chills will affect the area Saturday through Monday with periods of light snow. .Spotter information statement... Spotters are encouraged to report snow, blowing snow, or other significant weather to the National Weather Service in Cheyenne. NEZ054-055-WYZ117>119-131045- Kimball County-Cheyenne-South Laramie Range Foothills- Central Laramie County-East Laramie County- 335 AM MST Fri Feb 12 2021 This hazardous weather outlook is for portions of the western Nebraska Panhandle and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT A Wind Chill Advisory is in effect this morning and again tonight for wind chills as low as 30 below zero. Areas of light snow will also develop. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY The Wind Chill Advisory remains in effect until 11 AM Monday. Very cold temperatures and wind chills will continue. Light to moderate snow is expected Saturday and Saturday night. .Spotter information statement... Spotters are encouraged to report snow, blowing snow, or other significant weather to the National Weather Service in Cheyenne.
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 12, 3:33 PM MST | Winter Weather Advisory | CYS | Albany, Goshen, Laramie, Platte | 5 hr |
| Feb 12, 3:33 PM MST | Winter Weather Advisory | CYS | Cheyenne | 21 hr |
Nearby
Winter Weather Advisories in Nebraska, 2021Every winter weather advisory 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.