Alert archive / Nebraska / Tornado Watches in 2023
Tornado Watch 589
The Storm Prediction Center issued this tornado watch at Aug 5, 2023, 3:01 PM CDT for 4 states. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 5, 2023, 3:01 PM CDT (20:01 UTC)
- Expired
- Aug 5, 2023, 10:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 49 counties
Buena Vista County, IA, Carroll County, IA, Cherokee County, IA, Crawford County, IA, Harrison County, IA, Ida County, IA, Lyon County, IA, Monona County, IA, O'Brien County, IA, Osceola County, IA, Plymouth County, IA, Sac County, IA, Shelby County, IA, Sioux County, IA, Woodbury County, IA, Nobles County, MN, Pipestone County, MN, Rock County, MN, Antelope County, NE, Burt County, NE, Cedar County, NE, Colfax County, NE, Cuming County, NE, Dakota County, NE, Dixon County, NE, Dodge County, NE, Knox County, NE, Madison County, NE, Pierce County, NE, Platte County, NE, Stanton County, NE, Thurston County, NE, Washington County, NE, Wayne County, NE, Bon Homme County, SD, Clay County, SD, Davison County, SD, Hanson County, SD, Hutchinson County, SD, Lake County, SD, Lincoln County, SD, McCook County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Sanborn County, SD, Turner County, SD, Union County, SD, Yankton County, SD
The radar
The Sioux Falls radar (KFSD), 51 km from the middle of the area, began a volume at 20:06 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
- 30%
- One or more EF2 to EF5 tornadoes
- 10%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
15 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 3:18 PM CDT | Flash Flood Warning | FSD | Lyon, Sioux | 4 hr |
| Aug 5, 3:31 PM CDT | Tornado Warning | FSD | McCook, Turner | 29 min |
| Aug 5, 3:55 PM CDT | Severe Thunderstorm Warning | FSD | Ida | 16 min |
| Aug 5, 4:41 PM CDT | Flash Flood Warning | FSD | Lyon, Sioux | 3 hr |
| Aug 5, 5:20 PM CDT | Flash Flood Warning | FSD | Lyon, O'Brien, Osceola, Sioux | 3 hr |
| Aug 5, 6:19 PM CDT | Tornado Warning | FSD | Plymouth | 26 min |
| Aug 5, 6:30 PM CDT | Tornado Warning | DMX | Sac | 30 min |
| Aug 5, 6:39 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, O'Brien | 51 min |
| Aug 5, 6:41 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Plymouth | 49 min |
| Aug 5, 7:23 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Ida, Plymouth, Woodbury | 52 min |
| Aug 5, 7:55 PM CDT | Severe Thunderstorm Warning | OAX | Burt, Cuming, Dodge, Washington | 50 min |
| Aug 5, 8:31 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 29 min |
| Aug 5, 8:40 PM CDT | Tornado Warning | OAX | Burt, Washington | 35 min |
| Aug 5, 9:28 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Boone, Calhoun, Carroll, Crawford, Dallas and 3 more | 47 min |
| Aug 5, 9:31 PM CDT | Severe Thunderstorm Warning | OAX | Shelby | 29 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, 8.0 hours before the alert went out and 203 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
- 190 J/kg
- Mixed-layer CIN
- -62 J/kg
- Mixed-layer LCL
- 605 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -32 m²/s²
- 0-3 km storm-relative helicity
- -12 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 |
|---|---|---|---|---|
| Aug 5, 2:10 PM CDT | Mesoscale Discussion | SPC | Cherokee, Harrison, Lyon, Monona, O'Brien, Plymouth and 2 more | 95 min |
| Aug 5, 5:02 PM CDT | Mesoscale Discussion | SPC | Adair, Audubon, Buena Vista, Calhoun, Carroll, Cass and 11 more | 118 min |
| Aug 4, 9:09 PM CDT | Mesoscale Discussion | SPC | Blaine, Brown, Buffalo, Custer, Dawson, Franklin and 16 more | 96 min |
| Aug 4, 11:40 PM CDT | Mesoscale Discussion | SPC | Dundy, Hitchcock, Red Willow | 2 hr |
| Aug 5, 5:47 PM CDT | Severe Thunderstorm Watch | SPC | Dundy, Franklin, Furnas, Harlan, Hitchcock, Nuckolls and 3 more | 7 hr |
Nearby
Tornado Watches in Nebraska, 2023Tornado Watches in Iowa, 2023Tornado Watches in South Dakota, 2023Every tornado watch in 2023
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.