Alert archive / Nebraska / Mesoscale Discussions in 2011
Mesoscale Discussion 1476
The Storm Prediction Center issued this mesoscale discussion at Jul 2, 2011, 6:48 PM MDT for 4 states. It was in force for 117 min.
The area
The outline as issued.
The facts
- Issued
- Jul 2, 2011, 6:48 PM MDT (00:48 UTC)
- Expired
- Jul 2, 2011, 8:45 PM MDT
- In force
- 117 min
- Issued by
- the Storm Prediction Center
All 24 counties
Carter County, MT, Custer County, MT, Fallon County, MT, Powder River County, MT, Banner County, NE, Box Butte County, NE, Dawes County, NE, Garden County, NE, Morrill County, NE, Scotts Bluff County, NE, Sheridan County, NE, Sioux County, NE, Butte County, SD, Custer County, SD, Fall River County, SD, Harding County, SD, Lawrence County, SD, Meade County, SD, Oglala Lakota County, SD, Pennington County, SD, Crook County, WY, Goshen County, WY, Niobrara County, WY, Weston County, WY
The radar
The Rapid City radar (KUDX), 102 km from the middle of the area, began a volume at 00:48 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 nearest sounding before it
Rapid City, SD (KUNR), launched 00:00Z, 0.8 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
- 1797 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 1368 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 54 m²/s²
- 0-3 km storm-relative helicity
- 223 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 7.8
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 |
|---|---|---|---|---|
| Jul 3, 12:31 PM MDT | Mesoscale Discussion | SPC | Blaine, Broadwater, Cascade, Chouteau, Custer, Fergus and 19 more | 2 hr |
| Jul 3, 4:08 PM MDT | Severe Thunderstorm Watch | SPC | Big Horn, Blaine, Carbon, Carter, Chouteau, Custer and 23 more | 8 hr |
| Jul 2, 7:40 PM MDT | Mesoscale Discussion | SPC | Chase, Dundy, Hayes, Hitchcock | 2 hr |
| Jul 2, 9:46 PM MDT | Mesoscale Discussion | SPC | Adams, Clay, Fillmore, Franklin, Furnas, Gage and 9 more | 29 min |
| Jul 2, 9:56 PM MDT | Severe Thunderstorm Watch | SPC | Adams, Clay, Fillmore, Franklin, Furnas, Gage and 11 more | 6 hr |
| Jul 3, 12:49 AM MDT | Mesoscale Discussion | SPC | Clay, Fillmore, Gage, Jefferson, Nuckolls, Saline and 2 more | 86 min |
Nearby
Mesoscale Discussions in Nebraska, 2011Mesoscale Discussions in South Dakota, 2011Mesoscale Discussions in Montana, 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.