Alert archive / South Dakota / Blizzard Warnings in 2009
Blizzard Warning 2, NWS Rapid City, SD
NWS Rapid City, SD issued this blizzard warning at Mar 29, 2009, 3:04 AM MDT for 12 counties in South Dakota; Campbell County, Crook County, Wyoming. It took effect at Mar 29, 2009, 6:00 PM MDT. It was in force for 42 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
- Mar 29, 2009, 3:04 AM MDT (09:04 UTC)
- In effect from
- Mar 29, 2009, 6:00 PM MDT
- Expired
- Mar 31, 2009, 12:00 PM MDT
- In force
- 42 hr
- Issued by
- NWS Rapid City, SD
Counties Butte County, SD, Haakon County, SD, Harding County, SD, Jackson County, SD, Lawrence County, SD, Meade County, SD, Mellette County, SD, Pennington County, SD, Perkins County, SD, Todd County, SD, Tripp County, SD, Ziebach County, SD, Campbell County, WY, Crook County, WY
The radar
The Rapid City radar (KUDX), 35 km from the middle of the area, began a volume at 09:06 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
Bismarck Municip, ND (KBIS), launched 00:00Z, 9.1 hours before the alert went out and 304 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
- 1215 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- -28 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 Mar 28, 10:20 PM MDT, 4 hours 44 minutes earlier.
Area forecast discussion, Mar 28, 10:20 PM MDT, 4 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 |
|---|---|---|---|---|
| Mar 29, 3:04 AM MDT | Winter Storm Watch | UNR | Bennett, Custer, Mellette, Oglala Lakota, Todd, Tripp | 12 hr |
| Mar 29, 3:04 AM MDT | Winter Storm Warning | UNR | Bennett, Custer, Fall River, Lawrence, Meade, Mellette and 4 more | 51 hr |
| Mar 29, 3:15 PM MDT | Winter Weather Advisory | UNR | Fall River | 5 hr |
Nearby
Blizzard Warnings in South Dakota, 2009Blizzard Warnings in Wyoming, 2009Every blizzard warning in 2009
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.