Alert archive / Nebraska / Mesoscale Discussions in 2017
Mesoscale Discussion 1224
The Storm Prediction Center issued this mesoscale discussion at Jul 3, 2017, 4:49 PM MDT for 4 states. It was in force for 56 min.
The area
The outline as issued.
The facts
- Issued
- Jul 3, 2017, 4:49 PM MDT (22:49 UTC)
- Expired
- Jul 3, 2017, 5:45 PM MDT
- In force
- 56 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
All 27 counties
Logan County, CO, Phillips County, CO, Sedgwick County, CO, Yuma County, CO, Cheyenne County, KS, Rawlins County, KS, Sherman County, KS, Thomas County, KS, Arthur County, NE, Chase County, NE, Cherry 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, Lincoln County, NE, McPherson County, NE, Perkins County, NE, Sheridan County, NE, Bennett County, SD, Jackson County, SD, Oglala Lakota County, SD
The radar
The North Platte radar (KLNX), 114 km from the middle of the area, began a volume at 22:50 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 12:00Z, 10.8 hours before the alert went out and 91 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1547 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- -87 m²/s²
- 0-3 km storm-relative helicity
- -63 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 2, 7:04 PM MDT | Mesoscale Discussion | SPC | Phillips, Sedgwick | 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 Colorado, 2017Mesoscale Discussions in Kansas, 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.