Alert archive / Nebraska / Mesoscale Discussions in 2011
Mesoscale Discussion 2225
The Storm Prediction Center issued this mesoscale discussion at Oct 6, 2011, 2:19 PM MDT for 4 states. It was in force for 116 min.
The area
The outline as issued.
The facts
- Issued
- Oct 6, 2011, 2:19 PM MDT (20:19 UTC)
- Expired
- Oct 6, 2011, 4:15 PM MDT
- In force
- 116 min
- Issued by
- the Storm Prediction Center
All 32 counties
Logan County, CO, Phillips County, CO, Sedgwick County, CO, Yuma County, CO, Arthur County, NE, Banner County, NE, Box Butte County, NE, Chase County, NE, Cheyenne County, NE, Dawes County, NE, Deuel County, NE, Dundy County, NE, Garden County, NE, Grant County, NE, Keith County, NE, Kimball County, NE, Morrill County, NE, Perkins County, NE, Scotts Bluff County, NE, Sheridan County, NE, Sioux County, NE, Bennett County, SD, Custer County, SD, Fall River County, SD, Lawrence County, SD, Oglala Lakota County, SD, Pennington County, SD, Converse County, WY, Goshen County, WY, Niobrara County, WY, Platte County, WY, Weston County, WY
The radar
The Cheyenne radar (KCYS), 200 km from the middle of the area, began a volume at 20:18 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, 8.3 hours before the alert went out and 194 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 905 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 149 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 |
|---|---|---|---|---|
| Oct 6, 2:32 PM MDT | Severe Thunderstorm Watch | SPC | Arthur, Banner, Blaine, Box Butte, Brown, Chase and 22 more | 9 hr |
| Oct 6, 4:50 PM MDT | Mesoscale Discussion | SPC | Dundy, Hitchcock, Red Willow | 115 min |
| Oct 6, 4:55 PM MDT | Mesoscale Discussion | SPC | Arthur, Box Butte, Cherry, Cheyenne, Dawes, Deuel and 11 more | 95 min |
Nearby
Mesoscale Discussions in Nebraska, 2011Mesoscale Discussions in South Dakota, 2011Mesoscale Discussions in Wyoming, 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.