Alert archive / South Dakota / Mesoscale Discussions in 2007
Mesoscale Discussion 891
The Storm Prediction Center issued this mesoscale discussion at May 25, 2007, 4:40 PM MDT for 20 counties in North Dakota; 35 counties in South Dakota. It was in force for 65 min.
The area
The outline as issued.
The facts
- Issued
- May 25, 2007, 4:40 PM MDT (22:40 UTC)
- Expired
- May 25, 2007, 5:45 PM MDT
- In force
- 65 min
- Issued by
- the Storm Prediction Center
All 55 counties
Adams County, ND, Barnes County, ND, Bowman County, ND, Burleigh County, ND, Dickey County, ND, Emmons County, ND, Grant County, ND, Hettinger County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Morton County, ND, Oliver County, ND, Ransom County, ND, Sargent County, ND, Sioux County, ND, Slope County, ND, Stark County, ND, Stutsman County, ND, Bennett County, SD, Brown County, SD, Brule County, SD, Buffalo County, SD, Butte County, SD, Campbell County, SD, Corson County, SD, Custer County, SD, Dewey County, SD, Edmunds County, SD, Fall River County, SD, Faulk County, SD, Haakon County, SD, Hand County, SD, Harding County, SD, Hughes County, SD, Hyde County, SD, Jackson County, SD, Jerauld County, SD, Jones County, SD, Lyman County, SD, McPherson County, SD, Meade County, SD, Mellette County, SD, Oglala Lakota County, SD, Pennington County, SD, Perkins County, SD, Potter County, SD, Spink County, SD, Stanley County, SD, Sully County, SD, Todd County, SD, Tripp County, SD, Walworth County, SD, Ziebach County, SD
The radar
The Bismarck radar (KBIS), 176 km from the middle of the area, began a volume at 22:40 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 12:00Z, 10.7 hours before the alert went out and 176 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
- 1317 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 107 m²/s²
- 0-3 km storm-relative helicity
- 248 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 |
|---|---|---|---|---|
| May 25, 12:44 PM MDT | Mesoscale Discussion | SPC | Adams, Emmons, Grant, Hettinger, Sioux | 61 min |
| May 25, 1:05 PM MDT | Severe Thunderstorm Watch | SPC | Adams, Bowman, Burleigh, Emmons, Grant, Hettinger and 7 more | 7 hr |
Nearby
Mesoscale Discussions in South Dakota, 2007Mesoscale Discussions in North Dakota, 2007Every mesoscale discussion in 2007
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.