Alert archive / Nebraska / Mesoscale Discussions in 2015
Mesoscale Discussion 1056
The Storm Prediction Center issued this mesoscale discussion at Jun 18, 2015, 2:49 AM MDT for Sedgwick County, Colorado; 34 counties in Nebraska. It was in force for 116 min.
The area
The outline as issued.
The facts
- Issued
- Jun 18, 2015, 2:49 AM MDT (08:49 UTC)
- Expired
- Jun 18, 2015, 4:45 AM MDT
- In force
- 116 min
- Issued by
- the Storm Prediction Center
All 35 counties
Sedgwick County, CO, Adams County, NE, Arthur County, NE, Blaine County, NE, Brown County, NE, Buffalo County, NE, Chase County, NE, Custer County, NE, Dawson County, NE, Deuel County, NE, Frontier County, NE, Garden County, NE, Garfield County, NE, Gosper County, NE, Grant County, NE, Greeley County, NE, Hall County, NE, Hayes County, NE, Hitchcock County, NE, Hooker County, NE, Howard County, NE, Kearney County, NE, Keith County, NE, Keya Paha County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, McPherson County, NE, Perkins County, NE, Phelps County, NE, Red Willow County, NE, Rock County, NE, Sherman County, NE, Thomas County, NE, Valley County, NE
The radar
The North Platte radar (KLNX), 43 km from the middle of the area, began a volume at 08:51 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 nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 8.8 hours before the alert went out and 52 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
- 172 J/kg
- Mixed-layer CIN
- -113 J/kg
- Mixed-layer LCL
- 1543 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 163 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 12:26 PM MDT | Mesoscale Discussion | SPC | Baca, Prowers | 2 hr |
| Jun 18, 1:10 PM MDT | Severe Thunderstorm Watch | SPC | Baca | 8 hr |
| Jun 18, 2:37 PM MDT | Mesoscale Discussion | SPC | Baca | 113 min |
| Jun 17, 6:44 PM MDT | Mesoscale Discussion | SPC | Box Butte, Dawes, Scotts Bluff, Sheridan, Sioux | 61 min |
| Jun 17, 10:37 PM MDT | Mesoscale Discussion | SPC | Box Butte, Cherry, Dawes, Sheridan, Sioux | 53 min |
| Jun 18, 12:03 AM MDT | Severe Thunderstorm Watch | SPC | Arthur, Blaine, Box Butte, Brown, Cherry, Custer and 17 more | 4 hr |
Nearby
Mesoscale Discussions in Nebraska, 2015Mesoscale Discussions in Colorado, 2015Every mesoscale discussion in 2015
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.