Alert archive / South Dakota / Mesoscale Discussions in 2017
Mesoscale Discussion 1165
The Storm Prediction Center issued this mesoscale discussion at Jun 27, 2017, 7:02 PM CDT for 24 counties in South Dakota. It was in force for 88 min.
The area
The outline as issued.
The facts
- Issued
- Jun 27, 2017, 7:02 PM CDT (00:02 UTC)
- Expired
- Jun 27, 2017, 8:30 PM CDT
- In force
- 88 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 80%
All 24 counties
Aurora County, SD, Beadle County, SD, Brule County, SD, Buffalo County, SD, Charles Mix County, SD, Davison County, SD, Dewey County, SD, Douglas County, SD, Edmunds County, SD, Faulk County, SD, Gregory County, SD, Hand County, SD, Hughes County, SD, Hyde County, SD, Jerauld County, SD, Jones County, SD, Lyman County, SD, Potter County, SD, Sanborn County, SD, Spink County, SD, Stanley County, SD, Sully County, SD, Tripp County, SD, Walworth County, SD
The radar
The Aberdeen radar (KABR), 165 km from the middle of the area, began a volume at 00:05 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 0.0 hours before the alert went out and 123 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
- 2355 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 304 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Jun 27, 7:35 PM CDT | Severe Thunderstorm Watch | SPC | Aurora, Bon Homme, Brule, Buffalo, Charles Mix, Clay and 23 more | 5 hr |
| Jun 27, 8:12 PM CDT | Mesoscale Discussion | SPC | Gregory, Jackson, Jones, Lyman, Mellette, Todd and 1 more | 93 min |
| Jun 28, 3:28 PM CDT | Mesoscale Discussion | SPC | Butte, Custer, Fall River, Lawrence, Oglala Lakota, Pennington | 2 hr |
Nearby
Mesoscale Discussions in South Dakota, 2017Every mesoscale discussion in 2017
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.