Alert archive / Wyoming / Snow Squall Warnings in 2019
Snow Squall Warning 20, NWS Cheyenne, WY
NWS Cheyenne, WY issued this snow squall warning at Oct 23, 2019, 11:05 AM MDT for Converse County, Platte County, Wyoming. It was in force for 55 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
- Oct 23, 2019, 11:05 AM MDT (17:05 UTC)
- Expired
- Oct 23, 2019, 12:00 PM MDT
- In force
- 55 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
Counties Converse County, WY, Platte County, WY
The radar
The Cheyenne radar (KCYS), 160 km from the middle of the area, began a volume at 17:08 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, 5.1 hours before the alert went out and 342 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
- 2411 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- -19 m²/s²
- 0-3 km storm-relative helicity
- 214 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 Oct 23, 8:49 AM MDT, 2 hours 16 minutes earlier.
Area forecast discussion, Oct 23, 8:49 AM MDT, 2 hours 16 minutes before
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</html>Hazardous weather outlook, Oct 23, 8:56 AM MDT, 2 hours 9 minutes before
Hazardous Weather Outlook National Weather Service Cheyenne WY 856 AM MDT Wed Oct 23 2019 WYZ101>115-118-119-241500- Converse County Lower Elevations-Niobrara County- North Laramie Range-Ferris/Seminoe/Shirley Mountains- Shirley Basin-Central Laramie Range and Southwest Platte County- East Platte County-Goshen County-Central Carbon County- North Snowy Range Foothills-Southwest Carbon County- Sierra Madre Range-Upper North Platte River Basin-Snowy Range- Laramie Valley-Central Laramie County-East Laramie County- 856 AM MDT Wed Oct 23 2019 This hazardous weather outlook is for portions of east central Wyoming...south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT Scattered rain and snow showers will continue through the afternoon. Roadways will be snow covered this morning. An inch or two of snow is expected for lower elevations, with two to five inches over the Snowy and Sierra Madres. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY A strong cold front will bring colder temperatures and winter conditions Saturday night through early next week. Strong winds will precede the front Saturday across the wind prone areas. .Spotter information statement... Spotter activation will not be required. NEZ002-003-019>021-054-055-095-096-241500- Dawes-Box Butte-Scotts Bluff-Banner-Morrill-Kimball-Cheyenne- North Sioux-South Sioux- 856 AM MDT Wed Oct 23 2019 This hazardous weather outlook is for portions of western Nebraska. .DAY ONE...TODAY AND TONIGHT Scattered rain and snow showers will be possible this morning. Little or no snow accumulation is expected. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY A strong cold front will bring colder temperatures and winter conditions Saturday night through early next week. .Spotter information statement... Spotter activation will not be required. WYZ116-117-241500- South Laramie Range-South Laramie Range Foothills- 856 AM MDT Wed Oct 23 2019 This hazardous weather outlook is for portions of southeast Wyoming. .DAY ONE...TODAY AND TONIGHT Occasional snow showers will continue through this afternoon over the South Laramie Range and foothills. The snow will be moderate at times, along with gusty winds up to 35 mph. A Winter Weather Advisory is in effect until 6 PM. Two to four inches of new snow is expected. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY A strong cold front will bring colder temperatures and winter conditions Saturday night through early next week. Strong winds will precede the front Saturday across the wind prone areas. .Spotter information statement... Spotter activation will not be required.
In the hours before
Special weather statement, Oct 23, 8:06 AM MDT, 2 hours 59 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 |
|---|---|---|---|---|
| Oct 23, 8:46 AM MDT | Winter Weather Advisory | CYS | Albany, Laramie | 9 hr |
| Oct 23, 4:30 PM MDT | Snow Squall Warning | CYS | Laramie | 30 min |
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.