Alert archive / Nebraska / Mesoscale Discussions in 2017
Mesoscale Discussion 1356
The Storm Prediction Center issued this mesoscale discussion at Jul 19, 2017, 7:06 PM CDT for 4 counties in Iowa; 13 counties in Nebraska; 10 counties in South Dakota. It was in force for 84 min.
The area
The outline as issued.
The facts
- Issued
- Jul 19, 2017, 7:06 PM CDT (00:06 UTC)
- Expired
- Jul 19, 2017, 8:30 PM CDT
- In force
- 84 min
- Issued by
- the Storm Prediction Center
All 27 counties
Lyon County, IA, Plymouth County, IA, Sioux County, IA, Woodbury County, IA, Antelope County, NE, Boyd County, NE, Brown County, NE, Cedar County, NE, Cherry County, NE, Dakota County, NE, Dixon County, NE, Holt County, NE, Keya Paha County, NE, Knox County, NE, Pierce County, NE, Rock County, NE, Wayne County, NE, Bon Homme County, SD, Charles Mix County, SD, Clay County, SD, Douglas County, SD, Gregory County, SD, Hutchinson County, SD, Lincoln County, SD, Turner County, SD, Union County, SD, Yankton County, SD
The radar
The North Platte radar (KLNX), 132 km from the middle of the area, began a volume at 00:06 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, 0.1 hours before the alert went out and 212 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
- 1125 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 3189 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 65 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 19, 8:19 PM CDT | Mesoscale Discussion | SPC | Allamakee, Cedar, Clayton, Clinton, Delaware, Dubuque and 3 more | 86 min |
| Jul 20, 1:16 AM CDT | Mesoscale Discussion | SPC | Benton, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 20 more | 119 min |
| Jul 20, 3:57 PM CDT | Mesoscale Discussion | SPC | Boone, Calhoun, Carroll, Crawford, Greene, Hamilton and 8 more | 2 hr |
| Jul 20, 3:35 PM CDT | Mesoscale Discussion | SPC | Cheyenne, Kimball | 2 hr |
| Jul 20, 3:32 PM CDT | Mesoscale Discussion | SPC | Harding, Perkins | 58 min |
| Jul 20, 3:50 PM CDT | Severe Thunderstorm Watch | SPC | Butte, Harding, Meade, Perkins, Ziebach | 7 hr |
| Jul 20, 5:45 PM CDT | Mesoscale Discussion | SPC | Harding, Perkins | 90 min |
Nearby
Mesoscale Discussions in Nebraska, 2017Mesoscale Discussions in South Dakota, 2017Mesoscale Discussions in Iowa, 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.