Alert archive / Nebraska / Mesoscale Discussions in 2015
Mesoscale Discussion 1691
The Storm Prediction Center issued this mesoscale discussion at Aug 16, 2015, 2:42 PM CDT for 6 counties in Kansas; 21 counties in Nebraska. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 16, 2015, 2:42 PM CDT (19:42 UTC)
- Expired
- Aug 16, 2015, 4:45 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
All 27 counties
Cheyenne County, KS, Decatur County, KS, Norton County, KS, Rawlins County, KS, Sherman County, KS, Thomas County, KS, Adams County, NE, Boone County, NE, Buffalo County, NE, Dawson County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Hitchcock County, NE, Howard County, NE, Kearney County, NE, Merrick County, NE, Nance County, NE, Phelps County, NE, Polk County, NE, Red Willow County, NE, Sherman County, NE
The radar
The Grand Island radar (KUEX), 138 km from the middle of the area, began a volume at 19:45 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, 7.7 hours before the alert went out and 97 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
- 235 J/kg
- Mixed-layer CIN
- -420 J/kg
- Mixed-layer LCL
- 1611 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 127 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 15, 7:01 PM CDT | Mesoscale Discussion | SPC | Arthur, Boyd, Brown, Cherry, Garden, Grant and 7 more | 89 min |
| Aug 16, 1:08 PM CDT | Mesoscale Discussion | SPC | Kimball | 3 hr |
| Aug 16, 4:01 PM CDT | Mesoscale Discussion | SPC | Burt, Cedar, Cuming, Dakota, Dixon, Dodge and 3 more | 119 min |
| Aug 16, 6:24 PM CDT | Mesoscale Discussion | SPC | Banner, Box Butte, Scotts Bluff, Sioux | 2 hr |
Nearby
Mesoscale Discussions in Nebraska, 2015Mesoscale Discussions in Kansas, 2015Every mesoscale discussion in 2015
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.