Alert archive / Nebraska / Mesoscale Discussions in 2011
Mesoscale Discussion 1301
The Storm Prediction Center issued this mesoscale discussion at Jun 19, 2011, 5:49 PM CDT for 4 counties in Nebraska; Bon Homme County, South Dakota. It was in force for 56 min.
The area
The outline as issued.
The facts
- Issued
- Jun 19, 2011, 5:49 PM CDT (22:49 UTC)
- Expired
- Jun 19, 2011, 6:45 PM CDT
- In force
- 56 min
- Issued by
- the Storm Prediction Center
Counties Boyd County, NE, Holt County, NE, Knox County, NE, Rock County, NE, Bon Homme County, SD
The radar
The North Platte radar (KLNX), 174 km from the middle of the area, began a volume at 22:51 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
N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.8 hours before the alert went out and 237 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
- 324 J/kg
- Mixed-layer CIN
- -277 J/kg
- Mixed-layer LCL
- 1660 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- -18 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
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 18, 8:54 PM CDT | Mesoscale Discussion | SPC | Adams, Buffalo, Clay, Dawson, Fillmore, Franklin and 11 more | 66 min |
| Jun 18, 9:25 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Clay, Fillmore, Hall, Hamilton, Howard and 6 more | 4 hr |
| Jun 19, 2:09 PM CDT | Mesoscale Discussion | SPC | Arthur, Chase, Cheyenne, Deuel, Dundy, Garden and 3 more | 2 hr |
| Jun 19, 3:04 PM CDT | Tornado Watch | SPC | Arthur, Banner, Chase, Cheyenne, Deuel, Dundy and 7 more | 7 hr |
| Jun 19, 3:52 PM CDT | Mesoscale Discussion | SPC | Adams, Buffalo, Clay, Dawson, Fillmore, Franklin and 18 more | 113 min |
| Jun 19, 5:58 PM CDT | Mesoscale Discussion | SPC | Buffalo, Chase, Custer, Dawson, Dundy, Frontier and 7 more | 92 min |
| Jun 19, 6:10 PM CDT | Tornado Watch | SPC | Antelope, Blaine, Boone, Boyd, Brown, Buffalo and 36 more | 7 hr |
| Jun 19, 6:21 PM CDT | Mesoscale Discussion | SPC | Cass, Clay, Fillmore, Gage, Jefferson, Johnson and 9 more | 84 min |
| Jun 19, 6:51 PM CDT | Tornado Watch | SPC | Cass, Gage, Jefferson, Johnson, Lancaster, Nemaha and 4 more | 7 hr |
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.