Alert archive / Nebraska / Mesoscale Discussions in 2004
Mesoscale Discussion 229
The Storm Prediction Center issued this mesoscale discussion at Mar 27, 2004, 12:11 PM CST for 29 counties in Nebraska; Clay County, Union County, South Dakota. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 27, 2004, 12:11 PM CST (18:11 UTC)
- Expired
- Mar 27, 2004, 2:45 PM CST
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
All 31 counties
Antelope County, NE, Boone County, NE, Buffalo County, NE, Butler County, NE, Cedar County, NE, Colfax County, NE, Cuming County, NE, Dakota 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, Clay County, SD, Union County, SD
The radar
The Omaha radar (KOAX), 144 km from the middle of the area, began a volume at 18:11 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 12:00Z, 6.2 hours before the alert went out and 144 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
- 255 J/kg
- Mixed-layer CIN
- -58 J/kg
- Mixed-layer LCL
- 572 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 |
|---|---|---|---|---|
| Mar 27, 11:35 AM CST | Severe Thunderstorm Watch | SPC | Franklin, Harlan, Nuckolls, Webster | 5 hr |
| Mar 27, 3:04 PM CST | Mesoscale Discussion | SPC | Gage, Jefferson, Johnson, Pawnee | 116 min |
| Mar 26, 6:37 PM CST | Mesoscale Discussion | SPC | Butte, Haakon, Harding, Jackson, Lawrence, Meade and 3 more | 53 min |
| Mar 26, 7:35 PM CST | Severe Thunderstorm Watch | SPC | Butte, Harding, Perkins, Ziebach | 5 hr |
| Mar 26, 9:35 PM CST | Mesoscale Discussion | SPC | Butte, Harding, Perkins, Ziebach | 55 min |
| Mar 26, 11:30 PM CST | Severe Thunderstorm Watch | SPC | Bennett, Corson, Dewey, Haakon, Jackson, Jones and 7 more | 6 hr |
| Mar 27, 1:18 AM CST | Mesoscale Discussion | SPC | Bennett, Corson, Dewey, Haakon, Jackson, Jones and 4 more | 87 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.