Alert archive / Nebraska / Mesoscale Discussions in 2018
Mesoscale Discussion 1079
The Storm Prediction Center issued this mesoscale discussion at Jul 18, 2018, 9:21 PM CDT for 12 counties in Kansas; 53 counties in Nebraska. It was in force for 114 min.
The area
The outline as issued.
The facts
- Issued
- Jul 18, 2018, 9:21 PM CDT (02:21 UTC)
- Expired
- Jul 18, 2018, 11:15 PM CDT
- In force
- 114 min
- Issued by
- the Storm Prediction Center
All 65 counties
Clay County, KS, Cloud County, KS, Jewell County, KS, Lincoln County, KS, Marshall County, KS, Mitchell County, KS, Osborne County, KS, Ottawa County, KS, Republic County, KS, Riley County, KS, Smith County, KS, Washington County, KS, Adams County, NE, Antelope County, NE, Boone County, NE, Buffalo County, NE, Burt County, NE, Butler County, NE, Cass County, NE, Cedar County, NE, Clay County, NE, Colfax County, NE, Cuming County, NE, Dakota County, NE, Dixon County, NE, Dodge County, NE, Douglas County, NE, Fillmore County, NE, Franklin County, NE, Gage County, NE, Garfield County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Holt County, NE, Howard County, NE, Jefferson County, NE, Johnson County, NE, Kearney County, NE, Knox County, NE, Lancaster County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Nemaha County, NE, Nuckolls County, NE, Otoe County, NE, Pawnee County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Sherman County, NE, Stanton County, NE, Thayer County, NE, Thurston County, NE, Valley County, NE, Washington County, NE, Wayne County, NE, Webster County, NE, Wheeler County, NE, York County, NE
The radar
The Grand Island radar (KUEX), 95 km from the middle of the area, began a volume at 02:25 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
Omaha, NE (KOAX), launched 00:00Z, 2.4 hours before the alert went out and 113 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
- 922 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1005 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.1
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 19, 12:47 AM CDT | Mesoscale Discussion | SPC | Marshall, Nemaha, Washington | 118 min |
| Jul 19, 1:00 AM CDT | Severe Thunderstorm Watch | SPC | Atchison, Brown, Doniphan, Jackson, Marshall, Nemaha and 3 more | 5 hr |
| Jul 19, 3:52 AM CDT | Mesoscale Discussion | SPC | Atchison, Brown, Doniphan, Geary, Jackson, Jefferson and 7 more | 53 min |
| Jul 19, 11:37 AM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Atchison, Chase, Clay, Cloud and 38 more | 113 min |
| Jul 19, 12:26 PM CDT | Severe Thunderstorm Watch | SPC | Allen, Anderson, Atchison, Barton, Bourbon, Chase and 43 more | 8 hr |
| Jul 19, 2:43 PM CDT | Mesoscale Discussion | SPC | Atchison, Douglas, Franklin, Geary, Jackson, Jefferson and 10 more | 92 min |
| Jul 19, 5:42 PM CDT | Mesoscale Discussion | SPC | Barber, Clark, Comanche, Edwards, Finney, Ford and 10 more | 3 hr |
Nearby
Mesoscale Discussions in Nebraska, 2018Mesoscale Discussions in Kansas, 2018Every mesoscale discussion in 2018
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.