Alert archive / Nebraska / Mesoscale Discussions in 2017
Mesoscale Discussion 1218
The Storm Prediction Center issued this mesoscale discussion at Jul 2, 2017, 7:04 PM MDT for Phillips County, Sedgwick County, Colorado; 10 counties in Kansas; 13 counties in Nebraska. It was in force for 56 min.
The area
The outline as issued.
The facts
- Issued
- Jul 2, 2017, 7:04 PM MDT (01:04 UTC)
- Expired
- Jul 2, 2017, 8:00 PM MDT
- In force
- 56 min
- Issued by
- the Storm Prediction Center
All 25 counties
Phillips County, CO, Sedgwick County, CO, Cheyenne County, KS, Decatur County, KS, Graham County, KS, Norton County, KS, Phillips County, KS, Rawlins County, KS, Rooks County, KS, Sheridan County, KS, Sherman County, KS, Thomas County, KS, Chase County, NE, Dawson County, NE, Dundy County, NE, Frontier County, NE, Furnas County, NE, Gosper County, NE, Harlan County, NE, Hayes County, NE, Hitchcock County, NE, Lincoln County, NE, Perkins County, NE, Phelps County, NE, Red Willow County, NE
The radar
The Goodland radar (KGLD), 101 km from the middle of the area, began a volume at 01:07 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 nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.1 hours before the alert went out and 124 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
- 1751 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 2397 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 27 m²/s²
- 0-3 km storm-relative helicity
- 167 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 7.5
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 3, 4:49 PM MDT | Mesoscale Discussion | SPC | Logan, Phillips, Sedgwick, Yuma | 56 min |
| Jul 2, 9:56 PM MDT | Mesoscale Discussion | SPC | Barton, Ellis, Finney, Gove, Graham, Hodgeman and 12 more | 34 min |
| Jul 2, 11:02 PM MDT | Severe Thunderstorm Watch | SPC | Barton, Cloud, Ellis, Ellsworth, Jewell, Lane and 14 more | 4 hr |
| Jul 3, 2:34 AM MDT | Mesoscale Discussion | SPC | Barton, Edwards, Ellis, Ellsworth, Gove, Hodgeman and 15 more | 116 min |
| Jul 3, 2:24 PM MDT | Severe Thunderstorm Watch | SPC | Barber, Clark, Comanche, Meade | 9 hr |
Nearby
Mesoscale Discussions in Nebraska, 2017Mesoscale Discussions in Kansas, 2017Mesoscale Discussions in Colorado, 2017Every mesoscale discussion in 2017
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.