Alert archive / Nebraska / Mesoscale Discussions in 2011
Mesoscale Discussion 1517
The Storm Prediction Center issued this mesoscale discussion at Jul 5, 2011, 7:23 PM MDT for 5 counties in Colorado; Cheyenne County, Kansas; 7 counties in Nebraska. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 5, 2011, 7:23 PM MDT (01:23 UTC)
- Expired
- Jul 5, 2011, 9:30 PM MDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
Counties Logan County, CO, Phillips County, CO, Sedgwick County, CO, Washington County, CO, Yuma County, CO, Cheyenne County, KS, Chase County, NE, Deuel County, NE, Dundy County, NE, Frontier County, NE, Hayes County, NE, Hitchcock County, NE, Perkins County, NE
The radar
The Goodland radar (KGLD), 125 km from the middle of the area, began a volume at 01:24 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
Denver, CO (KDNR), launched 00:00Z, 1.4 hours before the alert went out and 99 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
- 2566 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 162 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 |
|---|---|---|---|---|
| Jul 5, 6:01 PM MDT | Severe Thunderstorm Watch | SPC | Logan, Morgan, Phillips, Sedgwick, Washington | 4 hr |
| Jul 5, 9:41 PM MDT | Mesoscale Discussion | SPC | Phillips, Yuma | 2 hr |
| Jul 6, 2:38 PM MDT | Mesoscale Discussion | SPC | Adams, Arapahoe, Bent, Boulder, Broomfield, Cheyenne and 21 more | 67 min |
| Jul 6, 2:56 PM MDT | Severe Thunderstorm Watch | SPC | Adams, Arapahoe, Bent, Cheyenne, Crowley, Elbert and 14 more | 8 hr |
| Jul 6, 5:16 PM MDT | Mesoscale Discussion | SPC | Bent, Cheyenne, Crowley, Elbert, El Paso, Kiowa and 11 more | 119 min |
| Jul 5, 6:07 PM MDT | Mesoscale Discussion | SPC | Atchison, Brown, Cheyenne, Clay, Cloud, Decatur and 26 more | 113 min |
| Jul 5, 7:02 PM MDT | Severe Thunderstorm Watch | SPC | Allen, Anderson, Atchison, Butler, Chase, Clay and 28 more | 7 hr |
Nearby
Mesoscale Discussions in Nebraska, 2011Mesoscale Discussions in Colorado, 2011Mesoscale Discussions in Kansas, 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.