Alert archive / Nebraska / Mesoscale Discussions in 2018
Mesoscale Discussion 1000
The Storm Prediction Center issued this mesoscale discussion at Jul 3, 2018, 6:36 PM MDT for 4 counties in Colorado; 17 counties in Nebraska. It was in force for 54 min.
The area
The outline as issued.
The facts
- Issued
- Jul 3, 2018, 6:36 PM MDT (00:36 UTC)
- Expired
- Jul 3, 2018, 7:30 PM MDT
- In force
- 54 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
All 21 counties
Logan County, CO, Morgan County, CO, Phillips County, CO, Sedgwick County, CO, Arthur County, NE, Banner County, NE, Chase County, NE, Cheyenne County, NE, Deuel County, NE, Dundy County, NE, Garden County, NE, Grant County, NE, Hayes County, NE, Hitchcock County, NE, Hooker County, NE, Keith County, NE, Kimball County, NE, McPherson County, NE, Morrill County, NE, Perkins County, NE, Scotts Bluff County, NE
The radar
The Cheyenne radar (KCYS), 174 km from the middle of the area, began a volume at 00:37 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
Denver, CO (KDEN), launched 00:00Z, 0.6 hours before the alert went out and 140 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
- 7 J/kg
- Mixed-layer CIN
- -62 J/kg
- Mixed-layer LCL
- 4296 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 41 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 4, 1:51 PM MDT | Mesoscale Discussion | SPC | Adams, Arapahoe, Broomfield, Denver, Douglas, Elbert and 9 more | 54 min |
| Jul 4, 9:27 AM MDT | Mesoscale Discussion | SPC | Burt, Cuming, Dodge, Thurston, Washington | 2 hr |
| Jul 4, 1:01 PM MDT | Mesoscale Discussion | SPC | Antelope, Blaine, Boyd, Brown, Burt, Cedar and 16 more | 119 min |
| Jul 4, 4:35 PM MDT | Mesoscale Discussion | SPC | Antelope, Blaine, Boyd, Brown, Cedar, Custer and 15 more | 115 min |
Nearby
Mesoscale Discussions in Nebraska, 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.