Alert archive / Nebraska / Mesoscale Discussions in 2018
Mesoscale Discussion 843
The Storm Prediction Center issued this mesoscale discussion at Jun 23, 2018, 5:09 PM CDT for 10 counties in Nebraska; Bon Homme County, Hutchinson County, Yankton County, South Dakota. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 23, 2018, 5:09 PM CDT (22:09 UTC)
- Expired
- Jun 23, 2018, 7:15 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 5%
Counties Butler County, NE, Cedar County, NE, Colfax County, NE, Cuming County, NE, Dodge County, NE, Madison County, NE, Pierce County, NE, Saunders County, NE, Stanton County, NE, Wayne County, NE, Bon Homme County, SD, Hutchinson County, SD, Yankton County, SD
The radar
The Omaha radar (KOAX), 130 km from the middle of the area, began a volume at 22:08 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
Omaha, NE (KOAX), launched 12:00Z, 10.2 hours before the alert went out and 130 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
- 14 J/kg
- Mixed-layer CIN
- -407 J/kg
- Mixed-layer LCL
- 962 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 60 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 |
|---|---|---|---|---|
| Jun 23, 5:14 PM CDT | Mesoscale Discussion | SPC | Banner, Box Butte, Dawes, Garden, Morrill, Scotts Bluff and 2 more | 61 min |
Nearby
Mesoscale Discussions in Nebraska, 2018Mesoscale Discussions in South Dakota, 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.