Alert archive / Nebraska / Mesoscale Discussions in 2004
Mesoscale Discussion 1699
The Storm Prediction Center issued this mesoscale discussion at Jul 15, 2004, 7:53 PM CDT for 29 counties in Nebraska; 9 counties in South Dakota. It was in force for 67 min.
The area
The outline as issued.
The facts
- Issued
- Jul 15, 2004, 7:53 PM CDT (00:53 UTC)
- Expired
- Jul 15, 2004, 9:00 PM CDT
- In force
- 67 min
- Issued by
- the Storm Prediction Center
All 38 counties
Antelope County, NE, Boone County, NE, Boyd County, NE, Buffalo County, NE, Butler County, NE, Cedar County, NE, Colfax County, NE, Cuming County, NE, Dixon County, NE, Garfield County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Holt County, NE, Howard County, NE, Knox County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Seward County, NE, Sherman County, NE, Stanton County, NE, Valley County, NE, Wayne County, NE, Wheeler County, NE, York County, NE, Bon Homme County, SD, Charles Mix County, SD, Clay County, SD, Douglas County, SD, Hutchinson County, SD, Lincoln County, SD, Turner County, SD, Union County, SD, Yankton County, SD
The radar
The Sioux Falls radar (KFSD), 178 km from the middle of the area, began a volume at 00:56 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
Omaha, NE (KOAX), launched 00:00Z, 0.9 hours before the alert went out and 192 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
- 2128 J/kg
- Mixed-layer CIN
- -136 J/kg
- Mixed-layer LCL
- 983 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 206 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 10.6
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 15, 10:00 PM CDT | Mesoscale Discussion | SPC | Chase, Dundy, Franklin, Frontier, Furnas, Gosper and 7 more | 90 min |
| Jul 15, 11:34 PM CDT | Mesoscale Discussion | SPC | Burt, Cass, Dodge, Douglas, Johnson, Lancaster and 7 more | 86 min |
| Jul 16, 3:33 AM CDT | Mesoscale Discussion | SPC | Richardson | 117 min |
| Jul 15, 9:16 PM CDT | Mesoscale Discussion | SPC | Clark, Codington, Day, Deuel, Grant, Hamlin and 2 more | 89 min |
Nearby
Mesoscale Discussions in Nebraska, 2004Mesoscale Discussions in South Dakota, 2004Every mesoscale discussion in 2004
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.