Alert archive / Nebraska / Mesoscale Discussions in 2025
Mesoscale Discussion 1981
The Storm Prediction Center issued this mesoscale discussion at Aug 17, 2025, 8:45 PM CDT for 28 counties in Nebraska; 14 counties in South Dakota. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 17, 2025, 8:45 PM CDT (01:45 UTC)
- Expired
- Aug 17, 2025, 10:45 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch possible
- Chance of a watch
- 60%
All 42 counties
Antelope County, NE, Blaine County, NE, Boone County, NE, Boyd County, NE, Brown County, NE, Cedar County, NE, Cherry County, NE, Colfax County, NE, Cuming County, NE, Dixon County, NE, Garfield County, NE, Greeley County, NE, Holt County, NE, Hooker County, NE, Keya Paha County, NE, Knox County, NE, Loup County, NE, Madison County, NE, Nance County, NE, Pierce County, NE, Platte County, NE, Rock County, NE, Sheridan County, NE, Stanton County, NE, Thomas County, NE, Valley County, NE, Wayne County, NE, Wheeler County, NE, Bennett County, SD, Bon Homme County, SD, Charles Mix County, SD, Clay County, SD, Douglas County, SD, Gregory County, SD, Hutchinson County, SD, Jackson County, SD, Mellette County, SD, Oglala Lakota County, SD, Todd County, SD, Tripp County, SD, Turner County, SD, Yankton County, SD
The radar
The North Platte radar (KLNX), 108 km from the middle of the area, began a volume at 01:43 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 00:00Z, 1.8 hours before the alert went out and 177 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
- 1891 J/kg
- Mixed-layer CIN
- -56 J/kg
- Mixed-layer LCL
- 1895 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 58 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.0
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 |
|---|---|---|---|---|
| Aug 17, 10:41 PM CDT | Severe Thunderstorm Watch | SPC | Antelope, Boyd, Cedar, Dakota, Dixon, Holt and 2 more | 5 hr |
| Aug 18, 1:50 AM CDT | Mesoscale Discussion | SPC | Antelope, Boone, Burt, Butler, Cass, Cedar and 21 more | 85 min |
| Aug 18, 3:20 PM CDT | Mesoscale Discussion | SPC | Banner, Cheyenne, Kimball, Morrill, Scotts Bluff | 115 min |
| Aug 18, 5:25 PM CDT | Severe Thunderstorm Watch | SPC | Chase, Cheyenne, Deuel, Dundy, Hitchcock, Red Willow | 4 hr |
| Aug 18, 3:15 PM CDT | Mesoscale Discussion | SPC | Custer, Haakon, Meade, Pennington, Perkins, Ziebach | 2 hr |
| Aug 18, 4:46 PM CDT | Severe Thunderstorm Watch | SPC | Bennett, Corson, Custer, Dewey, Haakon, Hughes and 12 more | 4 hr |
Nearby
Mesoscale Discussions in Nebraska, 2025Mesoscale Discussions in South Dakota, 2025Every mesoscale discussion in 2025
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.