Alert archive / Nebraska / Mesoscale Discussions in 2020
Mesoscale Discussion 1144
The Storm Prediction Center issued this mesoscale discussion at Jul 8, 2020, 2:39 PM MDT for Sedgwick County, Colorado; 45 counties in Nebraska; 16 counties in South Dakota. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 8, 2020, 2:39 PM MDT (20:39 UTC)
- Expired
- Jul 8, 2020, 5:15 PM MDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch likely
- Chance of a watch
- 95%
All 62 counties
Sedgwick County, CO, Antelope County, NE, Arthur County, NE, Blaine County, NE, Boone County, NE, Boyd County, NE, Brown County, NE, Buffalo County, NE, Cedar County, NE, Chase County, NE, Cherry County, NE, Custer County, NE, Dawson County, NE, Deuel County, NE, Dixon County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Garden County, NE, Garfield County, NE, Gosper County, NE, Grant County, NE, Greeley County, NE, Harlan County, NE, Hayes County, NE, Holt County, NE, Hooker County, NE, Howard County, NE, Kearney County, NE, Keith County, NE, Keya Paha County, NE, Knox County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, Madison County, NE, McPherson County, NE, Perkins County, NE, Phelps County, NE, Pierce County, NE, Red Willow County, NE, Rock County, NE, Sherman County, NE, Thomas County, NE, Valley County, NE, Wheeler County, NE, Aurora County, SD, Bon Homme County, SD, Charles Mix County, SD, Clay County, SD, Davison County, SD, Douglas County, SD, Gregory County, SD, Hanson County, SD, Hutchinson County, SD, Lincoln County, SD, McCook County, SD, Miner County, SD, Minnehaha County, SD, Turner County, SD, Union County, SD, Yankton County, SD
The radar
The North Platte radar (KLNX), 94 km from the middle of the area, began a volume at 20:39 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
N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 8.7 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
- 368 J/kg
- Mixed-layer CIN
- -412 J/kg
- Mixed-layer LCL
- 2117 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 132 m²/s²
- 0-3 km storm-relative helicity
- 99 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 |
|---|---|---|---|---|
| Jul 8, 4:10 PM MDT | Severe Thunderstorm Watch | SPC | Antelope, Arthur, Blaine, Boone, Boyd, Brown and 37 more | 7 hr |
| Jul 7, 6:13 PM MDT | Severe Thunderstorm Watch | SPC | Bennett, Butte, Haakon, Harding, Jackson, Lawrence and 5 more | 5 hr |
| Jul 7, 7:02 PM MDT | Mesoscale Discussion | SPC | Dewey, Haakon, Jackson, Jones, Meade, Pennington and 3 more | 118 min |
| Jul 7, 7:17 PM MDT | Severe Thunderstorm Watch | SPC | Campbell, Corson, Dewey, Potter, Stanley, Sully and 1 more | 5 hr |
| Jul 8, 3:10 AM MDT | Mesoscale Discussion | SPC | Brown, Codington, Day, Grant, Marshall, Roberts | 2 hr |
| Jul 8, 2:03 PM MDT | Mesoscale Discussion | SPC | Codington, Grant, Roberts | 117 min |
| Jul 8, 3:15 PM MDT | Severe Thunderstorm Watch | SPC | Clark, Codington, Deuel, Grant, Hamlin, Roberts | 8 hr |
| Jul 8, 5:17 PM MDT | Mesoscale Discussion | SPC | Codington, Deuel, Grant, Hamlin | 118 min |
Nearby
Mesoscale Discussions in Nebraska, 2020Mesoscale Discussions in South Dakota, 2020Mesoscale Discussions in Colorado, 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.