Alert archive / Nebraska / Mesoscale Discussions in 2018
Mesoscale Discussion 1187
The Storm Prediction Center issued this mesoscale discussion at Jul 28, 2018, 5:01 PM MDT for 4 counties in Colorado; 5 counties in Kansas; 14 counties in Nebraska. It was in force for 119 min.
The area
The outline as issued.
The facts
- Issued
- Jul 28, 2018, 5:01 PM MDT (23:01 UTC)
- Expired
- Jul 28, 2018, 7:00 PM MDT
- In force
- 119 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 80%
All 23 counties
Logan County, CO, Phillips County, CO, Sedgwick County, CO, Yuma County, CO, Cheyenne County, KS, Decatur County, KS, Rawlins County, KS, Sherman County, KS, Thomas County, KS, Arthur County, NE, Chase County, NE, Deuel County, NE, Dundy County, NE, Frontier County, NE, Garden County, NE, Grant County, NE, Hayes County, NE, Hitchcock County, NE, Keith County, NE, Lincoln County, NE, McPherson County, NE, Perkins County, NE, Red Willow County, NE
The radar
The Goodland radar (KGLD), 142 km from the middle of the area, began a volume at 23:04 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
Denver, CO (KDEN), launched 12:00Z, 11.0 hours before the alert went out and 131 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
- 281 J/kg
- Mixed-layer CIN
- -374 J/kg
- Mixed-layer LCL
- 928 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 84 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 28, 3:10 PM MDT | Mesoscale Discussion | SPC | Bent, Cheyenne, Crowley, El Paso, Kiowa, Lincoln and 2 more | 65 min |
| Jul 28, 5:40 PM MDT | Severe Thunderstorm Watch | SPC | Cheyenne, Kit Carson, Logan, Phillips, Sedgwick, Yuma | 7 hr |
| Jul 27, 7:24 PM MDT | Mesoscale Discussion | SPC | Clark, Finney, Ford, Grant, Gray, Hamilton and 11 more | 2 hr |
| Jul 28, 2:41 PM MDT | Mesoscale Discussion | SPC | Cherokee, Labette, Neosho | 64 min |
| Jul 28, 2:17 PM MDT | Mesoscale Discussion | SPC | Banner, Box Butte, Cheyenne, Dawes, Kimball, Morrill and 2 more | 88 min |
| Jul 28, 2:34 PM MDT | Tornado Watch | SPC | Banner, Box Butte, Cheyenne, Dawes, Kimball, Morrill and 2 more | 7 hr |
Nearby
Mesoscale Discussions in Nebraska, 2018Mesoscale Discussions in Kansas, 2018Mesoscale Discussions in Colorado, 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.