Alert archive / Wyoming / Snow Squall Warnings in 2019
Snow Squall Warning 5, NWS Cheyenne, WY
NWS Cheyenne, WY issued this snow squall warning at Jan 27, 2019, 9:30 PM MST for Laramie County, Wyoming. It was in force for 30 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jan 27, 2019, 9:30 PM MST (04:30 UTC)
- Expired
- Jan 27, 2019, 10:00 PM MST
- In force
- 30 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
County Laramie County, WY
The radar
The Cheyenne radar (KCYS), 20 km from the middle of the area, began a volume at 04:35 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
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 4.5 hours before the alert went out and 343 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
- 2270 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 250 m²/s²
- 0-3 km storm-relative helicity
- 275 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this snow squall warning 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 snow squall warning went out at Jan 27, 8:32 PM MST, 58 minutes earlier.
Area forecast discussion, Jan 27, 8:32 PM MST, 58 minutes before
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</html>Hazardous weather outlook, Jan 27, 3:48 AM MST, 17 hours 42 minutes before
Hazardous Weather Outlook National Weather Service Cheyenne WY 348 AM MST Sun Jan 27 2019 NEZ002-003-095-096-WYZ101-102-106>108-110-115>118-281030- Dawes-Box Butte-North Sioux-South Sioux- Converse County Lower Elevations-Niobrara County- Central Laramie Range and Southwest Platte County- East Platte County-Goshen County-North Snowy Range Foothills- Laramie Valley-South Laramie Range-South Laramie Range Foothills- Central Laramie County- 348 AM MST Sun Jan 27 2019 This hazardous weather outlook is for portions of western Nebraska...east central Wyoming...south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT Strong west to northwest winds over the wind-prone areas will spread onto the high plains this afternoon and evening. Gusts of 60 to 70 MPH are likely. High Wind Warnings are in effect. An arctic cold front will surge south across the area this evening, with strong northerly winds, snow and blowing snow. Snow accumulations will vary from a half inch to two inches. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY Snow will taper off Monday morning, however gusty northwest winds of 35 to 45 MPH will create areas of blowing snow with reduced visibility. Wind chill temperatures of 15 to 25 degrees below zero are forecast Monday and Tuesday night for the higher valleys and mountains. Strong winds will be possible Friday night and Saturday for the wind-prone areas of southeast Wyoming. .Spotter information statement... Spotters are asked to relay snowfall and high wind reports to the National Weather Service. WYZ103>105-109-111>114-281030- North Laramie Range-Ferris/Seminoe/Shirley Mountains- Shirley Basin-Central Carbon County-Southwest Carbon County- Sierra Madre Range-Upper North Platte River Basin-Snowy Range- 348 AM MST Sun Jan 27 2019 This hazardous weather outlook is for portions of south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT Gusty west to northwest winds of 35 to 55 MPH will create patchy blowing and drifting snow on area roadways. An arctic cold front will surge south across the area this evening, with strong northerly winds, snow and blowing snow. Snow accumulations will vary from an inch valleys to as much as five inches over the higher mountain peaks. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY Wind chill temperatures of 15 to 25 degrees below zero are forecast Monday and Tuesday night for the higher valleys and mountains. .Spotter information statement... Spotters are asked to relay snowfall reports to the National Weather Service. NEZ019>021-054-055-WYZ119-281030- Scotts Bluff-Banner-Morrill-Kimball-Cheyenne-East Laramie County- 348 AM MST Sun Jan 27 2019 This hazardous weather outlook is for portions of western Nebraska and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT Gusty west to northwest winds of 35 to 55 MPH are expected through this evening. An arctic cold front will surge south across the area this evening, with strong northerly winds, snow and blowing snow. Snow accumulations will be up to a half inch. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY Wind chill temperatures of 5 to 15 degrees below zero are forecast Monday and Tuesday night. .Spotter information statement... Spotter activation will not be required.
In the hours before
Local storm report, Jan 27, 4:49 PM MST, 4 hours 41 minutes before
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</html>Local storm report, Jan 27, 4:56 PM MST, 4 hours 34 minutes before
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</html>Local storm report, Jan 27, 5:36 PM MST, 3 hours 54 minutes before
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</html>Local storm report, Jan 27, 5:45 PM MST, 3 hours 45 minutes before
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</html>Local storm report, Jan 27, 7:37 PM MST, 1 hour 53 minutes before
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</html>Special weather statement, Jan 27, 7:40 PM MST, 1 hour 50 minutes before
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</html>The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 27, 10:00 PM MST | Winter Weather Advisory | CYS | Albany, Carbon, Laramie | 10 hr |
| Jan 28, 1:07 PM MST | Wind Chill Advisory | CYS | Albany, Carbon, Laramie | 18 hr |
| Jan 28, 1:14 PM MST | High Wind Watch | CYS | Albany, Carbon, Laramie, Platte | 14 hr |
Nearby
Snow Squall Warnings in Wyoming, 2019Every snow squall warning in 2019
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.