Alert archive / Minnesota / Mesoscale Discussions in 2012
Mesoscale Discussion 163
The Storm Prediction Center issued this mesoscale discussion at Feb 28, 2012, 11:43 AM CST for Lyon County, Osceola County, Iowa; 27 counties in Minnesota; 19 counties in South Dakota. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 28, 2012, 11:43 AM CST (17:43 UTC)
- Expired
- Feb 28, 2012, 4:45 PM CST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 48 counties
Lyon County, IA, Osceola County, IA, Big Stone County, MN, Brown County, MN, Carver County, MN, Chippewa County, MN, Cottonwood County, MN, Jackson County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Lincoln County, MN, Lyon County, MN, McLeod County, MN, Meeker County, MN, Murray County, MN, Nicollet County, MN, Nobles County, MN, Pipestone County, MN, Pope County, MN, Redwood County, MN, Renville County, MN, Rock County, MN, Sibley County, MN, Stearns County, MN, Stevens County, MN, Swift County, MN, Watonwan County, MN, Wright County, MN, Yellow Medicine County, MN, Beadle County, SD, Brookings County, SD, Buffalo County, SD, Clark County, SD, Codington County, SD, Day County, SD, Deuel County, SD, Grant County, SD, Hamlin County, SD, Hand County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Roberts County, SD, Sanborn County, SD, Spink County, SD
The radar
The Sioux Falls radar (KFSD), 89 km from the middle of the area, began a volume at 17:43 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, 5.7 hours before the alert went out and 147 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
- 954 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 276 m²/s²
- 0-3 km storm-relative helicity
- 401 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 28, 6:18 AM CST | Mesoscale Discussion | SPC | Buena Vista, Cherokee, Clay, Dickinson, Lyon, O'Brien and 3 more | 5 hr |
| Feb 28, 2:40 PM CST | Mesoscale Discussion | SPC | Anoka, Benton, Carver, Chisago, Dakota, Dodge and 18 more | 4 hr |
| Feb 28, 2:43 PM CST | Mesoscale Discussion | SPC | Becker, Clay, Crow Wing, Douglas, Grant, Morrison and 6 more | 5 hr |
Nearby
Mesoscale Discussions in Minnesota, 2012Mesoscale Discussions in South Dakota, 2012Mesoscale Discussions in Iowa, 2012Every mesoscale discussion in 2012
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.