Alert archive / North Dakota / Mesoscale Discussions in 2011
Mesoscale Discussion 1128
The Storm Prediction Center issued this mesoscale discussion at Jun 7, 2011, 2:51 PM CDT for 19 counties in North Dakota; 7 counties in South Dakota. It was in force for 114 min.
The area
The outline as issued.
The facts
- Issued
- Jun 7, 2011, 2:51 PM CDT (19:51 UTC)
- Expired
- Jun 7, 2011, 4:45 PM CDT
- In force
- 114 min
- Issued by
- the Storm Prediction Center
All 26 counties
Barnes County, ND, Burleigh County, ND, Cass County, ND, Dickey County, ND, Emmons County, ND, Foster County, ND, Griggs County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Morton County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Sioux County, ND, Steele County, ND, Stutsman County, ND, Traill County, ND, Brown County, SD, Campbell County, SD, Corson County, SD, Edmunds County, SD, Marshall County, SD, McPherson County, SD, Walworth County, SD
The radar
The Aberdeen radar (KABR), 107 km from the middle of the area, began a volume at 19:52 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
Bismarck Municip, ND (KBIS), launched 12:00Z, 7.9 hours before the alert went out and 135 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
- 882 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 538 m²/s²
- 0-3 km storm-relative helicity
- 549 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 |
|---|---|---|---|---|
| Jun 6, 11:25 PM CDT | Mesoscale Discussion | SPC | Adams, Billings, Bowman, Dunn, Golden Valley, Hettinger and 6 more | 95 min |
| Jun 7, 3:50 PM CDT | Severe Thunderstorm Watch | SPC | Burleigh, Dickey, Emmons, Foster, Grant, Kidder and 11 more | 4 hr |
| Jun 6, 8:10 PM CDT | Mesoscale Discussion | SPC | Aurora, Beadle, Bennett, Brule, Buffalo, Charles Mix and 24 more | 95 min |
Nearby
Mesoscale Discussions in North Dakota, 2011Mesoscale Discussions in South Dakota, 2011Every mesoscale discussion in 2011
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.