Alert archive / Nebraska / Tornado Watches in 2006
Tornado Watch 775
The Storm Prediction Center issued this tornado watch at Sep 16, 2006, 3:56 PM CDT for 7 counties in Iowa; 14 counties in Kansas; 39 counties in Nebraska. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 16, 2006, 3:56 PM CDT (20:56 UTC)
- Expired
- Sep 16, 2006, 11:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 3 in
- Strongest gust expected
- 60 kt
All 60 counties
Fremont County, IA, Harrison County, IA, Mills County, IA, Montgomery County, IA, Page County, IA, Pottawattamie County, IA, Shelby County, IA, Brown County, KS, Clay County, KS, Cloud County, KS, Jackson County, KS, Jewell County, KS, Marshall County, KS, Mitchell County, KS, Nemaha County, KS, Osborne County, KS, Pottawatomie County, KS, Republic County, KS, Riley County, KS, Smith County, KS, Washington County, KS, Adams County, NE, Boone County, NE, Burt County, NE, Butler County, NE, Cass County, NE, Clay County, NE, Colfax County, NE, Cuming County, NE, Dodge County, NE, Douglas County, NE, Fillmore County, NE, Gage County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Howard County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Nemaha County, NE, Nuckolls County, NE, Otoe County, NE, Pawnee County, NE, Platte County, NE, Polk County, NE, Richardson County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Stanton County, NE, Thayer County, NE, Washington County, NE, Webster County, NE, Wheeler County, NE, York County, NE
The radar
The Grand Island radar (KUEX), 78 km from the middle of the area, began a volume at 20:58 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 60%
- One or more EF2 to EF5 tornadoes
- 40%
- Ten or more severe wind reports
- 50%
- One or more gusts of 65 knots or more
- 50%
- Ten or more severe hail reports
- 60%
- One or more hailstones of 2 inches or more
- 50%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
40 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 16, 7:27 PM CDT | Severe Thunderstorm Warning | GID | Clay, Fillmore | 18 min |
| Sep 16, 7:41 PM CDT | Tornado Warning | GID | Fillmore, York | 19 min |
| Sep 16, 7:50 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 25 min |
| Sep 16, 7:53 PM CDT | Severe Thunderstorm Warning | OAX | Butler, Seward | 37 min |
| Sep 16, 7:58 PM CDT | Severe Thunderstorm Warning | TOP | Cloud, Ottawa | 47 min |
| Sep 16, 8:07 PM CDT | Severe Thunderstorm Warning | GID | Fillmore, York | 23 min |
| Sep 16, 8:17 PM CDT | Severe Thunderstorm Warning | GID | Clay | 13 min |
| Sep 16, 8:23 PM CDT | Severe Thunderstorm Warning | OAX | Butler, Saunders | 37 min |
| Sep 16, 8:24 PM CDT | Severe Thunderstorm Warning | TOP | Republic | 28 min |
| Sep 16, 8:25 PM CDT | Severe Thunderstorm Warning | OAX | Seward | 35 min |
| Sep 16, 8:30 PM CDT | Severe Thunderstorm Warning | GID | Clay, Fillmore, York | 30 min |
| Sep 16, 8:36 PM CDT | Severe Thunderstorm Warning | OAX | Douglas, Washington | 24 min |
| Sep 16, 8:44 PM CDT | Severe Thunderstorm Warning | TOP | Cloud, Ottawa | 46 min |
| Sep 16, 8:44 PM CDT | Severe Thunderstorm Warning | OAX | Cuming, Dodge | 46 min |
| Sep 16, 8:48 PM CDT | Severe Thunderstorm Warning | OAX | Burt | 27 min |
| Sep 16, 8:52 PM CDT | Tornado Warning | OAX | Douglas, Saunders | 38 min |
| Sep 16, 8:54 PM CDT | Severe Thunderstorm Warning | GID | Jewell | 36 min |
| Sep 16, 8:54 PM CDT | Severe Thunderstorm Warning | GID | Nuckolls | 51 min |
| Sep 16, 8:56 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 34 min |
| Sep 16, 9:01 PM CDT | Severe Thunderstorm Warning | GID | Fillmore | 27 min |
| Sep 16, 9:02 PM CDT | Severe Thunderstorm Warning | OAX | Seward | 43 min |
| Sep 16, 9:03 PM CDT | Severe Thunderstorm Warning | GID | Osborne | 27 min |
| Sep 16, 9:12 PM CDT | Severe Thunderstorm Warning | TOP | Republic | 48 min |
| Sep 16, 9:13 PM CDT | Severe Thunderstorm Warning | OAX | Saunders | 32 min |
| Sep 16, 9:18 PM CDT | Severe Thunderstorm Warning | TOP | Clay, Washington | 42 min |
| Sep 16, 9:21 PM CDT | Flash Flood Warning | OAX | Saunders | 3 hr |
| Sep 16, 9:28 PM CDT | Severe Thunderstorm Warning | GID | Mitchell, Osborne | 32 min |
| Sep 16, 9:30 PM CDT | Severe Thunderstorm Warning | GID | Jewell | 45 min |
| Sep 16, 9:34 PM CDT | Severe Thunderstorm Warning | GID | Thayer | 41 min |
| Sep 16, 9:40 PM CDT | Severe Thunderstorm Warning | GID | Nuckolls | 21 min |
| Sep 16, 9:52 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 23 min |
| Sep 16, 9:54 PM CDT | Severe Thunderstorm Warning | OAX | Douglas, Washington | 36 min |
| Sep 16, 9:57 PM CDT | Severe Thunderstorm Warning | GID | Mitchell | 33 min |
| Sep 16, 10:00 PM CDT | Severe Thunderstorm Warning | TOP | Clay, Washington | 34 min |
| Sep 16, 10:08 PM CDT | Severe Thunderstorm Warning | OAX | Shelby | 37 min |
| Sep 16, 10:14 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 31 min |
| Sep 16, 10:25 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 65 min |
| Sep 16, 10:27 PM CDT | Severe Thunderstorm Warning | TOP | Marshall | 29 min |
| Sep 16, 10:42 PM CDT | Severe Thunderstorm Warning | OAX | Shelby | 33 min |
| Sep 16, 10:47 PM CDT | Flash Flood Warning | OAX | Harrison, Shelby | 118 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
Omaha, NE (KOAX), launched 12:00Z, 8.9 hours before the alert went out and 129 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
- 32 J/kg
- Mixed-layer CIN
- -448 J/kg
- Mixed-layer LCL
- 1558 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 293 m²/s²
- 0-3 km storm-relative helicity
- 270 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.4
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 15, 8:32 PM CDT | Mesoscale Discussion | SPC | Adair, Audubon, Buena Vista, Calhoun, Carroll, Cass and 21 more | 58 min |
| Sep 15, 8:50 PM CDT | Severe Thunderstorm Watch | SPC | Crawford, Fremont, Harrison, Mills, Monona, Montgomery and 2 more | 4 hr |
| Sep 16, 1:25 PM CDT | Mesoscale Discussion | SPC | Cherokee, Lyon, O'Brien, Osceola, Plymouth, Sioux and 1 more | 3 hr |
| Sep 16, 1:53 PM CDT | Tornado Watch | SPC | Lyon, Monona, Plymouth, Sioux, Woodbury | 8 hr |
| Sep 16, 3:24 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 7 more | 96 min |
| Sep 16, 5:07 PM CDT | Tornado Watch | SPC | Buena Vista, Calhoun, Carroll, Cherokee, Clay, Crawford and 15 more | 8 hr |
| Sep 16, 6:12 PM CDT | Mesoscale Discussion | SPC | Lyon | 63 min |
| Sep 15, 7:26 PM CDT | Severe Thunderstorm Watch | SPC | Barton, Clark, Comanche, Edwards, Ellis, Ellsworth and 14 more | 8 hr |
| Sep 15, 8:20 PM CDT | Severe Thunderstorm Watch | SPC | Clay, Cloud, Graham, Jewell, Mitchell, Osborne and 6 more | 7 hr |
| Sep 15, 9:37 PM CDT | Tornado Watch | SPC | Barber, Barton, Clark, Comanche, Edwards, Ellsworth and 13 more | 5 hr |
| Sep 16, 1:37 AM CDT | Mesoscale Discussion | SPC | Barton, Butler, Chase, Dickinson, Ellsworth, Geary and 10 more | 53 min |
| Sep 16, 4:08 PM CDT | Mesoscale Discussion | SPC | Barber, Barton, Clark, Comanche, Edwards, Ellis and 15 more | 97 min |
| Sep 16, 5:54 PM CDT | Tornado Watch | SPC | Barber, Barton, Butler, Chase, Clark, Comanche and 27 more | 8 hr |
| Sep 15, 7:06 PM CDT | Tornado Watch | SPC | Butler, Clay, Colfax, Cuming, Dodge, Fillmore and 12 more | 6 hr |
| Sep 15, 11:59 PM CDT | Mesoscale Discussion | SPC | Buffalo, Custer, Dawson, Garfield, Gosper, Greeley and 10 more | 91 min |
Nearby
Tornado Watches in Nebraska, 2006Tornado Watches in Kansas, 2006Tornado Watches in Iowa, 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.