Alert archive / Nebraska / Tornado Watches in 2006
Tornado Watch 158
The Storm Prediction Center issued this tornado watch at Apr 6, 2006, 5:18 PM CDT for 20 counties in Nebraska; 9 counties in South Dakota. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 6, 2006, 5:18 PM CDT (22:18 UTC)
- Expired
- Apr 6, 2006, 10:24 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 29 counties
Antelope County, NE, Boyd County, NE, Brown County, NE, Burt County, NE, Cedar County, NE, Cherry County, NE, Cuming County, NE, Dakota County, NE, Dixon County, NE, Garfield County, NE, Holt County, NE, Keya Paha County, NE, Knox County, NE, Madison County, NE, Pierce County, NE, Rock County, NE, Stanton County, NE, Thurston County, NE, Wayne County, NE, Wheeler County, NE, Bon Homme County, SD, Charles Mix County, SD, Clay County, SD, Douglas County, SD, Gregory County, SD, Hutchinson County, SD, Turner County, SD, Union County, SD, Yankton County, SD
The radar
The North Platte radar (KLNX), 143 km from the middle of the area, began a volume at 22:18 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
10 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 6, 5:36 PM CDT | Severe Thunderstorm Warning | LBF | Rock | 32 min |
| Apr 6, 5:59 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 46 min |
| Apr 6, 6:18 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 42 min |
| Apr 6, 6:19 PM CDT | Severe Thunderstorm Warning | LBF | Keya Paha, Rock | 56 min |
| Apr 6, 6:41 PM CDT | Severe Thunderstorm Warning | LBF | Boyd, Holt | 64 min |
| Apr 6, 7:03 PM CDT | Severe Thunderstorm Warning | OAX | Madison | 27 min |
| Apr 6, 7:53 PM CDT | Severe Thunderstorm Warning | OAX | Cuming | 30 min |
| Apr 6, 8:22 PM CDT | Severe Thunderstorm Warning | FSD | Dixon | 38 min |
| Apr 6, 8:29 PM CDT | Severe Thunderstorm Warning | FSD | Yankton | 31 min |
| Apr 6, 8:35 PM CDT | Severe Thunderstorm Warning | FSD | Union | 25 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 12:00Z, 10.3 hours before the alert went out and 205 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
- 1708 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- -236 m²/s²
- 0-3 km storm-relative helicity
- -299 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 6, 1:20 AM CDT | Mesoscale Discussion | SPC | Antelope, Boyd, Holt, Keya Paha, Knox, Rock | 85 min |
| Apr 6, 6:01 AM CDT | Mesoscale Discussion | SPC | Gage, Johnson, Lancaster, Nemaha, Otoe, Pawnee and 1 more | 119 min |
| Apr 6, 12:12 PM CDT | Mesoscale Discussion | SPC | Adams, Antelope, Blaine, Boone, Buffalo, Butler and 34 more | 2 hr |
| Apr 6, 12:43 PM CDT | Tornado Watch | SPC | Adams, Boone, Buffalo, Butler, Cass, Clay and 33 more | 8 hr |
| Apr 6, 3:24 PM CDT | Mesoscale Discussion | SPC | Antelope, Burt, Cedar, Cuming, Dakota, Dixon and 7 more | 2 hr |
| Apr 6, 2:02 PM CDT | Mesoscale Discussion | SPC | Beadle, Brookings, Brown, Buffalo, Campbell, Clark and 31 more | 118 min |
Nearby
Tornado Watches in Nebraska, 2006Tornado Watches in South Dakota, 2006Every tornado watch in 2006
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.