Alert archive / Nebraska / Severe Thunderstorm Watches in 2004
Severe Thunderstorm Watch 423
The Storm Prediction Center issued this severe thunderstorm watch at Jun 9, 2004, 6:40 PM MDT for Phillips County, Sedgwick County, Yuma County, Colorado; 10 counties in Kansas; 18 counties in Nebraska. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 9, 2004, 6:40 PM MDT (00:40 UTC)
- Expired
- Jun 9, 2004, 11:00 PM MDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
All 31 counties
Phillips County, CO, Sedgwick County, CO, Yuma County, CO, Cheyenne County, KS, Decatur County, KS, Gove County, KS, Logan County, KS, Rawlins County, KS, Sheridan County, KS, Sherman County, KS, Thomas County, KS, Trego County, KS, Wallace County, KS, Arthur County, NE, Box Butte County, NE, Chase County, NE, Cheyenne County, NE, Deuel County, NE, Dundy County, NE, Frontier County, NE, Garden County, NE, Grant County, NE, Hayes County, NE, Hitchcock County, NE, Hooker County, NE, Keith County, NE, Lincoln County, NE, McPherson County, NE, Morrill County, NE, Perkins County, NE, Red Willow County, NE
The radar
The North Platte radar (KLNX), 142 km from the middle of the area, began a volume at 00:41 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.
Warnings issued inside it
1 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 7:11 PM MDT | Severe Thunderstorm Warning | CYS | Morrill | 64 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.7 hours before the alert went out and 81 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
- 1957 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 1419 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.9
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 9:37 PM MDT | Mesoscale Discussion | SPC | Decatur, Finney, Gove, Lane, Logan, Rawlins and 4 more | 53 min |
| Jun 10, 2:37 PM MDT | Mesoscale Discussion | SPC | Clark, Comanche, Decatur, Edwards, Ellis, Finney and 19 more | 83 min |
| Jun 10, 3:55 PM MDT | Tornado Watch | SPC | Barton, Decatur, Ellis, Ellsworth, Gove, Graham and 13 more | 5 hr |
| Jun 10, 12:14 PM MDT | Mesoscale Discussion | SPC | Box Butte, Cherry, Dawes, Garden, Grant, Morrill and 3 more | 91 min |
| Jun 10, 1:00 PM MDT | Tornado Watch | SPC | Arthur, Box Butte, Cherry, Cheyenne, Dawes, Deuel and 9 more | 7 hr |
| Jun 10, 3:59 PM MDT | Mesoscale Discussion | SPC | Arthur, Box Butte, Cherry, Cheyenne, Dawes, Deuel and 10 more | 91 min |
| Jun 10, 5:08 PM MDT | Mesoscale Discussion | SPC | Blaine, Boyd, Brown, Custer, Garfield, Greeley and 8 more | 97 min |
| Jun 10, 5:25 PM MDT | Tornado Watch | SPC | Blaine, Boyd, Brown, Custer, Garfield, Greeley and 11 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Nebraska, 2004Severe Thunderstorm Watches in Kansas, 2004Severe Thunderstorm Watches in Colorado, 2004Every severe thunderstorm watch 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.