Alert archive / Nebraska / Mesoscale Discussions in 2011
Mesoscale Discussion 1398
The Storm Prediction Center issued this mesoscale discussion at Jun 26, 2011, 10:44 AM CDT for 7 counties in Nebraska; 5 counties in South Dakota. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 26, 2011, 10:44 AM CDT (15:44 UTC)
- Expired
- Jun 26, 2011, 12:45 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
Counties Brown County, NE, Cherry County, NE, Grant County, NE, Hooker County, NE, Keya Paha County, NE, Sheridan County, NE, Thomas County, NE, Bennett County, SD, Jackson County, SD, Mellette County, SD, Todd County, SD, Tripp County, SD
The radar
The North Platte radar (KLNX), 120 km from the middle of the area, began a volume at 15:48 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Rapid City, SD (KUNR), launched 12:00Z, 3.7 hours before the alert went out and 180 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
- 277 J/kg
- Mixed-layer CIN
- -195 J/kg
- Mixed-layer LCL
- 837 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 159 m²/s²
- 0-3 km storm-relative helicity
- 281 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.8
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 |
|---|---|---|---|---|
| Jun 25, 8:14 PM CDT | Severe Thunderstorm Watch | SPC | Brown, Cherry, Keya Paha, Rock, Sheridan | 6 hr |
| Jun 25, 11:27 PM CDT | Mesoscale Discussion | SPC | Brown, Cherry, Keya Paha | 63 min |
| Jun 26, 6:08 AM CDT | Mesoscale Discussion | SPC | Cherry, Keya Paha | 97 min |
| Jun 26, 6:16 AM CDT | Mesoscale Discussion | SPC | Antelope, Boone, Boyd, Brown, Burt, Butler and 40 more | 59 min |
| Jun 26, 1:03 PM CDT | Severe Thunderstorm Watch | SPC | Blaine, Boyd, Brown, Cherry, Garfield, Grant and 8 more | 7 hr |
| Jun 26, 2:30 PM CDT | Mesoscale Discussion | SPC | Antelope, Banner, Blaine, Boone, Box Butte, Boyd and 22 more | 2 hr |
| Jun 26, 3:09 PM CDT | Mesoscale Discussion | SPC | Adams, Boone, Butler, Cass, Clay, Colfax and 20 more | 2 hr |
| Jun 26, 4:56 PM CDT | Severe Thunderstorm Watch | SPC | Antelope, Boone, Burt, Butler, Cass, Cedar and 26 more | 7 hr |
| Jun 26, 12:35 PM CDT | Mesoscale Discussion | SPC | Brown, Campbell, Corson, Dewey, Edmunds, Faulk and 10 more | 85 min |
Nearby
Mesoscale Discussions in Nebraska, 2011Mesoscale Discussions in South Dakota, 2011Every mesoscale discussion in 2011
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.