Alert archive / North Dakota / Mesoscale Discussions in 2020
Mesoscale Discussion 1098
The Storm Prediction Center issued this mesoscale discussion at Jul 4, 2020, 3:23 PM CDT for 5 counties in Minnesota; 24 counties in North Dakota; Campbell County, McPherson County, Marshall County, South Dakota. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 4, 2020, 3:23 PM CDT (20:23 UTC)
- Expired
- Jul 4, 2020, 5:30 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch possible
- Chance of a watch
- 60%
All 32 counties
Clay County, MN, Kittson County, MN, Marshall County, MN, Norman County, MN, Polk County, MN, Barnes County, ND, Cass County, ND, Cavalier County, ND, Dickey County, ND, Eddy County, ND, Emmons County, ND, Foster County, ND, Grand Forks County, ND, Griggs County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Nelson County, ND, Pembina County, ND, Ramsey County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Steele County, ND, Stutsman County, ND, Towner County, ND, Traill County, ND, Walsh County, ND, Campbell County, SD, Marshall County, SD, McPherson County, SD
The radar
The Fargo/Grand Forks radar (KMVX), 108 km from the middle of the area, began a volume at 20:24 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 12:00Z, 8.4 hours before the alert went out and 235 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
- 1062 J/kg
- Mixed-layer CIN
- -159 J/kg
- Mixed-layer LCL
- 1334 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- 27 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
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 |
|---|---|---|---|---|
| Jul 4, 3:53 PM CDT | Severe Thunderstorm Watch | SPC | Becker, Beltrami, Clay, Clearwater, Hubbard, Kittson and 10 more | 8 hr |
| Jul 3, 8:22 PM CDT | Mesoscale Discussion | SPC | Billings, Bowman, Golden Valley, McKenzie, Slope, Williams | 113 min |
| Jul 4, 12:46 AM CDT | Mesoscale Discussion | SPC | Adams, Burleigh, Emmons, Grant, Hettinger, Morton and 1 more | 89 min |
| Jul 4, 5:57 PM CDT | Mesoscale Discussion | SPC | Bennett, Fall River, Jackson, Oglala Lakota | 2 hr |
Nearby
Mesoscale Discussions in North Dakota, 2020Mesoscale Discussions in Minnesota, 2020Mesoscale Discussions in South Dakota, 2020Every mesoscale discussion in 2020
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.