Alert archive / Nebraska / Mesoscale Discussions in 2016
Mesoscale Discussion 1644
The Storm Prediction Center issued this mesoscale discussion at Sep 5, 2016, 5:09 PM MDT for 6 counties in Nebraska; Custer County, Fall River County, Lawrence County, South Dakota; Goshen County, Niobrara County, Weston County, Wyoming. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 5, 2016, 5:09 PM MDT (23:09 UTC)
- Expired
- Sep 5, 2016, 7:45 PM MDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
Counties Box Butte County, NE, Dawes County, NE, Garden County, NE, Morrill County, NE, Scotts Bluff County, NE, Sioux County, NE, Custer County, SD, Fall River County, SD, Lawrence County, SD, Goshen County, WY, Niobrara County, WY, Weston County, WY
The radar
The Rapid City radar (KUDX), 176 km from the middle of the area, began a volume at 23:11 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, 11.2 hours before the alert went out and 314 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
- 1581 J/kg
- Mixed-layer CIN
- -229 J/kg
- Mixed-layer LCL
- 798 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 137 m²/s²
- 0-3 km storm-relative helicity
- 136 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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 |
|---|---|---|---|---|
| Sep 4, 6:50 PM MDT | Mesoscale Discussion | SPC | Blaine, Buffalo, Custer, Dawson, Logan, Loup and 2 more | 115 min |
| Sep 4, 7:57 PM MDT | Mesoscale Discussion | SPC | Arthur, Chase, Cherry, Dundy, Frontier, Grant and 10 more | 93 min |
| Sep 4, 9:40 PM MDT | Severe Thunderstorm Watch | SPC | Antelope, Blaine, Boone, Boyd, Cedar, Custer and 10 more | 4 hr |
| Sep 5, 12:10 AM MDT | Mesoscale Discussion | SPC | Dakota, Dixon, Thurston | 2 hr |
| Sep 5, 2:08 PM MDT | Mesoscale Discussion | SPC | Blaine, Boyd, Garfield, Holt, Knox, Loup and 3 more | 2 hr |
| Sep 5, 2:30 PM MDT | Mesoscale Discussion | SPC | Frontier, Furnas, Gosper, Harlan, Hitchcock, Phelps and 1 more | 90 min |
| Sep 5, 5:06 PM MDT | Mesoscale Discussion | SPC | Antelope, Blaine, Boone, Buffalo, Custer, Dawson and 18 more | 84 min |
| Sep 4, 8:16 PM MDT | Mesoscale Discussion | SPC | Aurora, Beadle, Brown, Brule, Buffalo, Clark and 24 more | 59 min |
Nearby
Mesoscale Discussions in Nebraska, 2016Mesoscale Discussions in South Dakota, 2016Mesoscale Discussions in Wyoming, 2016Every mesoscale discussion in 2016
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.