Alert archive / South Dakota / Blizzard Warnings in 2022
Blizzard Warning 4, NWS Rapid City, SD
NWS Rapid City, SD issued this blizzard warning at Dec 21, 2022, 1:44 PM MST for 12 counties in South Dakota. It took effect at Dec 21, 2022, 2:00 PM MST. It was in force for 45 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
- Dec 21, 2022, 1:44 PM MST (20:44 UTC)
- In effect from
- Dec 21, 2022, 2:00 PM MST
- Expired
- Dec 23, 2022, 11:00 AM MST
- In force
- 45 hr
- Issued by
- NWS Rapid City, SD
Counties Bennett County, SD, Butte County, SD, Haakon County, SD, Harding County, SD, Jackson County, SD, Meade County, SD, Mellette County, SD, Pennington County, SD, Perkins County, SD, Todd County, SD, Tripp County, SD, Ziebach County, SD
The radar
The Rapid City radar (KUDX), 75 km from the middle of the area, began a volume at 20:45 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
Aberdeen, SD (KABR), launched 12:00Z, 8.7 hours before the alert went out and 287 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
- 943 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 231 m²/s²
- 0-3 km storm-relative helicity
- 419 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this blizzard warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Rapid City, SD wrote its last area forecast discussion before this blizzard warning went out at Dec 21, 10:00 AM MST, 3 hours 44 minutes earlier.
Area forecast discussion, Dec 21, 10:00 AM MST, 3 hours 44 minutes before
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</html>The office that day
Everything else NWS Rapid City, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 21, 1:47 AM MST | Winter Weather Advisory | UNR | Bennett, Butte, Custer, Fall River, Haakon, Harding and 10 more | 51 hr |
| Dec 21, 11:03 AM MST | Snow Squall Warning | UNR | Butte, Meade, Pennington | 42 min |
| Dec 21, 11:46 AM MST | Snow Squall Warning | UNR | Meade, Pennington | 44 min |
| Dec 21, 12:30 PM MST | Snow Squall Warning | UNR | Haakon, Jackson, Meade, Pennington | 45 min |
| Dec 21, 1:04 PM MST | Snow Squall Warning | UNR | Fall River, Oglala Lakota | 56 min |
Nearby
Blizzard Warnings in South Dakota, 2022Blizzard Warnings in Wyoming, 2022Every blizzard 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.