Alert archive / South Dakota / Mesoscale Discussions in 2016
Mesoscale Discussion 1562
The Storm Prediction Center issued this mesoscale discussion at Aug 18, 2016, 9:36 PM CDT for 4 states. It was in force for 84 min.
The area
The outline as issued.
The facts
- Issued
- Aug 18, 2016, 9:36 PM CDT (02:36 UTC)
- Expired
- Aug 18, 2016, 11:00 PM CDT
- In force
- 84 min
- Issued by
- the Storm Prediction Center
All 35 counties
Dickinson County, IA, Lyon County, IA, Osceola County, IA, Lincoln County, MN, Lyon County, MN, Murray County, MN, Nobles County, MN, Pipestone County, MN, Redwood County, MN, Rock County, MN, Boyd County, NE, Cherry County, NE, Keya Paha County, NE, Aurora County, SD, Brookings County, SD, Brule County, SD, Buffalo County, SD, Charles Mix County, SD, Davison County, SD, Douglas County, SD, Gregory County, SD, Hanson County, SD, Hutchinson County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, Lincoln County, SD, McCook County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Sanborn County, SD, Todd County, SD, Tripp County, SD, Turner County, SD
The radar
The Sioux Falls radar (KFSD), 151 km from the middle of the area, began a volume at 02:39 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 00:00Z, 2.6 hours before the alert went out and 164 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
- 109 J/kg
- Mixed-layer CIN
- -248 J/kg
- Mixed-layer LCL
- 969 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- -112 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -3.4
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 7:23 PM CDT | Severe Thunderstorm Watch | SPC | Lyon, Osceola | 4 hr |
| Aug 18, 7:41 PM CDT | Mesoscale Discussion | SPC | Allamakee, Bremer, Buchanan, Chickasaw, Clayton, Delaware and 3 more | 94 min |
| Aug 19, 1:36 PM CDT | Mesoscale Discussion | SPC | Fillmore, Gage, Jefferson, Johnson, Lancaster, Nemaha and 7 more | 84 min |
| Aug 19, 1:55 PM CDT | Severe Thunderstorm Watch | SPC | Clay, Fillmore, Gage, Jefferson, Johnson, Nemaha and 7 more | 5 hr |
| Aug 19, 5:40 PM CDT | Mesoscale Discussion | SPC | Johnson, Nemaha, Pawnee, Richardson | 95 min |
Nearby
Mesoscale Discussions in South Dakota, 2016Mesoscale Discussions in Minnesota, 2016Mesoscale Discussions in Iowa, 2016Every mesoscale discussion in 2016
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.