Alert archive / South Dakota / Winter Storm Warnings in 2018
Winter Storm Warning 13, NWS Rapid City, SD
NWS Rapid City, SD issued this winter storm warning at Dec 25, 2018, 2:03 PM MST for 8 counties in South Dakota. It took effect at Dec 26, 2018, 2:00 AM MST. It was in force for 27 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 25, 2018, 2:03 PM MST (21:03 UTC)
- In effect from
- Dec 26, 2018, 2:00 AM MST
- Expired
- Dec 27, 2018, 5:00 AM MST
- In force
- 27 hr
- Issued by
- NWS Rapid City, SD
Counties Bennett County, SD, Haakon County, SD, Jackson County, SD, Mellette County, SD, Perkins County, SD, Todd County, SD, Tripp County, SD, Ziebach County, SD
The radar
The Rapid City radar (KUDX), 124 km from the middle of the area, began a volume at 21:01 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
Aberdeen, SD (KABR), launched 12:00Z, 9.1 hours before the alert went out and 252 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
- 518 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 94 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 storm 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 winter storm warning went out at Dec 25, 10:41 AM MST, 3 hours 22 minutes earlier.
Area forecast discussion, Dec 25, 10:41 AM MST, 3 hours 22 minutes before
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</html>Hazardous weather outlook, Dec 25, 3:01 AM MST, 11 hours 2 minutes before
Hazardous Weather Outlook National Weather Service Rapid City SD 301 AM MST Tue Dec 25 2018 SDZ001-002-012-013-024>026-028-031-072-073-WYZ054-056-057-071- 261315- Harding-Perkins-Butte-Northern Meade Co Plains- Northern Black Hills-Northern Foot Hills-Rapid City- Central Black Hills-Pennington Co Plains- Sturgis/Piedmont Foot Hills-Southern Meade Co Plains- Northern Campbell-Western Crook-Wyoming Black Hills- Northeastern Crook- 301 AM MST Tue Dec 25 2018 This Hazardous Weather Outlook is for portions of northwestern South Dakota...southwestern South Dakota...the Black Hills of South Dakota...northeast Wyoming...and the Black Hills of Wyoming. .DAY ONE...Today and Tonight A winter weather advisory is in effect tonight through Wednesday. Snow will develop across the area tonight. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Snow will continue through Wednesday, with snowfall accumulation of 2 to 5 inches. See the Winter Weather Message (WSWUNR) for details. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today. && Stay tuned to NOAA weather radio for further updates...or check our web site at weather.gov/rapidcity SDZ014-032-043-044-046-047-049-261315- Ziebach-Haakon-Jackson-Bennett-Mellette-Todd-Tripp- 301 AM MST Tue Dec 25 2018 /401 AM CST Tue Dec 25 2018/ This Hazardous Weather Outlook is for portions of western South Dakota. .DAY ONE...Today and Tonight A Winter Storm Watch is in effect Wednesday through Thursday night. Snow will develop across the area tonight. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Snow will continue through Thursday night, with snowfall accumulation of 6 or more inches. Northwest winds will create areas of blowing snow. See the Winter Weather Message (WSWUNR) for details. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today. && Stay tuned to NOAA weather radio for further updates...or check our web site at weather.gov/rapidcity SDZ027-029-030-041-042-074-WYZ055-058-261315- Southern Foot Hills-Southern Black Hills-Custer Co Plains- Fall River-Oglala Lakota-Hermosa Foot Hills-Southern Campbell- Weston- 301 AM MST Tue Dec 25 2018 This Hazardous Weather Outlook is for portions of southwestern South Dakota...the Black Hills of South Dakota...and northeast Wyoming. .DAY ONE...Today and Tonight Snow will develop across the area tonight. .DAYS TWO THROUGH SEVEN...Wednesday through Monday The snow will continue through Wednesday, with accumulations 1 to 2 inches. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today. && Stay tuned to NOAA weather radio for further updates...or check our web site at weather.gov/rapidcity
The office that day
Everything else NWS Rapid City, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 25, 2:50 AM MST | Winter Weather Advisory | UNR | Bennett, Butte, Custer, Haakon, Harding, Jackson and 8 more | 3 days |
Nearby
Winter Storm Warnings in South Dakota, 2018Every winter storm warning in 2018
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.