Alert archive / North Dakota / Mesoscale Discussions in 2012
Mesoscale Discussion 1534
The Storm Prediction Center issued this mesoscale discussion at Jul 21, 2012, 8:27 PM MDT for 20 counties in North Dakota; 8 counties in South Dakota. It was in force for 63 min.
The area
The outline as issued.
The facts
- Issued
- Jul 21, 2012, 8:27 PM MDT (02:27 UTC)
- Expired
- Jul 21, 2012, 9:30 PM MDT
- In force
- 63 min
- Issued by
- the Storm Prediction Center
All 28 counties
Adams County, ND, Billings County, ND, Bowman County, ND, Burke County, ND, Divide County, ND, Dunn County, ND, Grant County, ND, Hettinger County, ND, McKenzie County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Mountrail County, ND, Oliver County, ND, Renville County, ND, Sioux County, ND, Slope County, ND, Stark County, ND, Ward County, ND, Williams County, ND, Corson County, SD, Dewey County, SD, Haakon County, SD, Harding County, SD, Meade County, SD, Pennington County, SD, Perkins County, SD, Ziebach County, SD
The radar
The Bismarck radar (KBIS), 148 km from the middle of the area, began a volume at 02:30 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 00:00Z, 2.5 hours before the alert went out and 152 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
- 2443 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 157 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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 |
|---|---|---|---|---|
| Jul 22, 12:40 PM MDT | Mesoscale Discussion | SPC | Barnes, Cass, Dickey, LaMoure, Ransom, Richland and 2 more | 95 min |
| Jul 22, 2:25 PM MDT | Severe Thunderstorm Watch | SPC | Cass, Ransom, Richland, Sargent | 6 hr |
| Jul 22, 4:45 PM MDT | Severe Thunderstorm Watch | SPC | Dickey, LaMoure, Logan, McIntosh | 4 hr |
| Jul 22, 5:55 PM MDT | Mesoscale Discussion | SPC | Richland, Traill | 95 min |
| Jul 21, 9:51 PM MDT | Mesoscale Discussion | SPC | Aurora, Beadle, Brookings, Brule, Buffalo, Charles Mix and 24 more | 54 min |
| Jul 22, 3:38 PM MDT | Mesoscale Discussion | SPC | Brown, Campbell, Clark, Codington, Day, Dewey and 9 more | 97 min |
Nearby
Mesoscale Discussions in North Dakota, 2012Mesoscale Discussions in South Dakota, 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.