Alert archive / Nebraska / Mesoscale Discussions in 2009
Mesoscale Discussion 1513
The Storm Prediction Center issued this mesoscale discussion at Jul 11, 2009, 12:28 AM MDT for 6 counties in Colorado; 12 counties in Kansas; 22 counties in Nebraska. It was in force for 62 min.
The area
The outline as issued.
The facts
- Issued
- Jul 11, 2009, 12:28 AM MDT (06:28 UTC)
- Expired
- Jul 11, 2009, 1:30 AM MDT
- In force
- 62 min
- Issued by
- the Storm Prediction Center
All 40 counties
Cheyenne County, CO, Kit Carson County, CO, Logan County, CO, Phillips County, CO, Sedgwick County, CO, Yuma County, CO, Cheyenne County, KS, Decatur County, KS, Gove County, KS, Graham County, KS, Logan County, KS, Norton County, KS, Rawlins County, KS, Sheridan County, KS, Sherman County, KS, Thomas County, KS, Trego County, KS, Wallace County, KS, 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, Frontier County, NE, Furnas County, NE, Garden County, NE, Grant County, NE, Hayes County, NE, Hitchcock County, NE, Keith County, NE, Kimball County, NE, Morrill County, NE, Perkins County, NE, Red Willow County, NE, Scotts Bluff County, NE, Sheridan County, NE, Sioux County, NE
The radar
The Goodland radar (KGLD), 128 km from the middle of the area, began a volume at 06:30 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, 6.5 hours before the alert went out and 121 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
- 4048 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- -36 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
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 11, 3:35 PM MDT | Mesoscale Discussion | SPC | Adams, Arapahoe, Broomfield, Cheyenne, Denver, Douglas and 10 more | 55 min |
| Jul 11, 3:56 PM MDT | Severe Thunderstorm Watch | SPC | Adams, Arapahoe, Cheyenne, Elbert, Kit Carson, Lincoln and 7 more | 9 hr |
| Jul 11, 2:30 AM MDT | Mesoscale Discussion | SPC | Johnson | 90 min |
| Jul 11, 6:14 AM MDT | Mesoscale Discussion | SPC | Keya Paha | 61 min |
| Jul 11, 10:09 AM MDT | Mesoscale Discussion | SPC | Blaine, Brown, Cherry, Custer, Garfield, Greeley and 8 more | 96 min |
Nearby
Mesoscale Discussions in Nebraska, 2009Mesoscale Discussions in Kansas, 2009Mesoscale Discussions in Colorado, 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.