Alert archive / Nebraska / Mesoscale Discussions in 2009
Mesoscale Discussion 1104
The Storm Prediction Center issued this mesoscale discussion at Jun 13, 2009, 8:58 PM CDT for 10 counties in Nebraska; 9 counties in South Dakota; Campbell County, Weston County, Wyoming. It was in force for 62 min.
The area
The outline as issued.
The facts
- Issued
- Jun 13, 2009, 8:58 PM CDT (01:58 UTC)
- Expired
- Jun 13, 2009, 10:00 PM CDT
- In force
- 62 min
- Issued by
- the Storm Prediction Center
All 21 counties
Blaine County, NE, Brown County, NE, Cherry County, NE, Dawes County, NE, Grant County, NE, Hooker County, NE, Keya Paha County, NE, Rock County, NE, Sheridan County, NE, Thomas County, NE, Bennett County, SD, Custer County, SD, Fall River County, SD, Jackson County, SD, Lawrence County, SD, Mellette County, SD, Oglala Lakota County, SD, Pennington County, SD, Todd County, SD, Campbell County, WY, Weston County, WY
The radar
The Rapid City radar (KUDX), 116 km from the middle of the area, began a volume at 02:01 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
Rapid City, SD (KUNR), launched 00:00Z, 2.0 hours before the alert went out and 111 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
- 317 J/kg
- Mixed-layer CIN
- -50 J/kg
- Mixed-layer LCL
- 1298 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 66 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 |
|---|---|---|---|---|
| Jun 13, 7:42 PM CDT | Mesoscale Discussion | SPC | Banner, Box Butte, Cheyenne, Dawes, Deuel, Kimball and 3 more | 63 min |
| Jun 14, 2:06 PM CDT | Mesoscale Discussion | SPC | Banner, Box Butte, Cheyenne, Dawes, Kimball, Morrill and 2 more | 54 min |
| Jun 14, 2:50 PM CDT | Tornado Watch | SPC | Banner, Box Butte, Cheyenne, Dawes, Deuel, Garden and 5 more | 7 hr |
| Jun 14, 5:48 PM CDT | Mesoscale Discussion | SPC | Chase, Cheyenne, Deuel, Dundy, Garden, Hayes and 5 more | 117 min |
| Jun 14, 3:22 PM CDT | Mesoscale Discussion | SPC | Butte, Custer, Fall River, Harding, Lawrence, Meade and 2 more | 83 min |
| Jun 14, 5:09 PM CDT | Severe Thunderstorm Watch | SPC | Bennett, Butte, Corson, Custer, Dewey, Fall River and 18 more | 8 hr |
Nearby
Mesoscale Discussions in Nebraska, 2009Mesoscale Discussions in South Dakota, 2009Mesoscale Discussions in Wyoming, 2009Every mesoscale discussion in 2009
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.