Alert archive / Nebraska / Mesoscale Discussions in 2018
Mesoscale Discussion 767
The Storm Prediction Center issued this mesoscale discussion at Jun 17, 2018, 1:05 PM MDT for 5 counties in Colorado; Cheyenne County, Kansas; 13 counties in Nebraska. It was in force for 85 min.
The area
The outline as issued.
The facts
- Issued
- Jun 17, 2018, 1:05 PM MDT (19:05 UTC)
- Expired
- Jun 17, 2018, 2:30 PM MDT
- In force
- 85 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 80%
Counties Logan County, CO, Phillips County, CO, Sedgwick County, CO, Washington County, CO, Yuma County, CO, Cheyenne County, KS, Blaine County, NE, Chase County, NE, Custer County, NE, Deuel County, NE, Dundy County, NE, Frontier County, NE, Hayes County, NE, Hitchcock County, NE, Keith County, NE, Lincoln County, NE, Logan County, NE, McPherson County, NE, Perkins County, NE
The radar
The Goodland radar (KGLD), 132 km from the middle of the area, began a volume at 19:07 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, 7.1 hours before the alert went out and 125 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
- 74 J/kg
- Mixed-layer CIN
- -134 J/kg
- Mixed-layer LCL
- 840 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 54 m²/s²
- 0-3 km storm-relative helicity
- -1 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 |
|---|---|---|---|---|
| Jun 17, 1:35 PM MDT | Tornado Watch | SPC | Kit Carson, Logan, Phillips, Sedgwick, Washington, Yuma | 7 hr |
| Jun 17, 3:53 PM MDT | Mesoscale Discussion | SPC | Kit Carson, Logan, Phillips, Sedgwick, Washington, Yuma | 97 min |
| Jun 17, 5:47 PM MDT | Mesoscale Discussion | SPC | Phillips, Sedgwick, Washington, Yuma | 88 min |
| Jun 16, 6:59 PM MDT | Mesoscale Discussion | SPC | Banner, Box Butte, Cherry, Cheyenne, Dawes, Garden and 5 more | 91 min |
| Jun 16, 8:50 PM MDT | Mesoscale Discussion | SPC | Banner, Box Butte, Cherry, Dawes, Grant, Morrill and 2 more | 85 min |
| Jun 17, 2:52 PM MDT | Mesoscale Discussion | SPC | Burt, Butler, Cass, Cedar, Colfax, Cuming and 17 more | 53 min |
| Jun 17, 4:47 PM MDT | Mesoscale Discussion | SPC | Blaine, Boyd, Brown, Holt, Knox, Logan and 3 more | 118 min |
Nearby
Mesoscale Discussions in Nebraska, 2018Mesoscale Discussions in Colorado, 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.