Alert archive / Nebraska / Severe Thunderstorm Watches in 2004
Severe Thunderstorm Watch 816
The Storm Prediction Center issued this severe thunderstorm watch at Sep 13, 2004, 5:50 PM CDT for 4 states. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 13, 2004, 5:50 PM CDT (22:50 UTC)
- Expired
- Sep 14, 2004, 1:00 AM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
All 81 counties
Buena Vista County, IA, Cherokee County, IA, Clay County, IA, Dickinson County, IA, Emmet County, IA, Ida County, IA, Lyon County, IA, Monona County, IA, O'Brien County, IA, Osceola County, IA, Palo Alto County, IA, Plymouth County, IA, Sioux County, IA, Woodbury County, IA, Blue Earth County, MN, Brown County, MN, Cottonwood County, MN, Faribault County, MN, Jackson County, MN, Le Sueur County, MN, Lyon County, MN, Martin County, MN, Murray County, MN, Nicollet County, MN, Nobles County, MN, Pipestone County, MN, Redwood County, MN, Rice County, MN, Rock County, MN, Sibley County, MN, Waseca County, MN, Watonwan County, MN, Adams County, NE, Antelope County, NE, Boone County, NE, Buffalo County, NE, Burt County, NE, Butler County, NE, Cedar County, NE, Clay County, NE, Colfax County, NE, Cuming County, NE, Dakota County, NE, Dixon County, NE, Dodge County, NE, Fillmore County, NE, Franklin County, NE, Furnas County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Howard County, NE, Kearney County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Phelps County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Saline County, NE, Saunders County, NE, Seward County, NE, Sherman County, NE, Stanton County, NE, Thayer County, NE, Thurston County, NE, Washington County, NE, Wayne County, NE, Webster County, NE, Wheeler County, NE, York County, NE, Clay County, SD, Lincoln County, SD, Minnehaha County, SD, Turner County, SD, Union County, SD, Yankton County, SD
The radar
The Omaha radar (KOAX), 107 km from the middle of the area, began a volume at 22:50 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
18 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 13, 5:53 PM CDT | Severe Thunderstorm Warning | FSD | Clay | 37 min |
| Sep 13, 6:16 PM CDT | Severe Thunderstorm Warning | OAX | Antelope, Boone | 29 min |
| Sep 13, 6:21 PM CDT | Severe Thunderstorm Warning | OAX | Pierce | 39 min |
| Sep 13, 6:22 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Turner | 23 min |
| Sep 13, 6:40 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 35 min |
| Sep 13, 6:48 PM CDT | Severe Thunderstorm Warning | OAX | Boone, Madison | 42 min |
| Sep 13, 6:51 PM CDT | Severe Thunderstorm Warning | OAX | Cedar, Knox | 39 min |
| Sep 13, 7:25 PM CDT | Severe Thunderstorm Warning | FSD | Minnehaha | 35 min |
| Sep 13, 8:24 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 36 min |
| Sep 13, 8:32 PM CDT | Severe Thunderstorm Warning | OAX | Madison | 43 min |
| Sep 13, 8:37 PM CDT | Severe Thunderstorm Warning | OAX | Pierce, Wayne | 38 min |
| Sep 13, 8:50 PM CDT | Severe Thunderstorm Warning | MPX | Redwood, Renville | 55 min |
| Sep 13, 8:53 PM CDT | Severe Thunderstorm Warning | MPX | Redwood, Renville | 52 min |
| Sep 13, 8:53 PM CDT | Severe Thunderstorm Warning | OAX | Antelope | 37 min |
| Sep 13, 9:19 PM CDT | Severe Thunderstorm Warning | OAX | Cedar, Pierce | 41 min |
| Sep 13, 9:29 PM CDT | Severe Thunderstorm Warning | FSD | Murray | 31 min |
| Sep 13, 9:40 PM CDT | Severe Thunderstorm Warning | MPX | Redwood | 35 min |
| Sep 13, 10:10 PM CDT | Severe Thunderstorm Warning | MPX | Brown, Nicollet, Sibley | 65 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, 10.8 hours before the alert went out and 107 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
- 12 J/kg
- Mixed-layer CIN
- -643 J/kg
- Mixed-layer LCL
- 1472 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 253 m²/s²
- 0-3 km storm-relative helicity
- 321 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 13, 3:21 PM CDT | Mesoscale Discussion | SPC | Lyon, O'Brien, Osceola, Plymouth, Sioux | 84 min |
| Sep 13, 6:12 PM CDT | Mesoscale Discussion | SPC | Becker, Beltrami, Clay, Clearwater, Hubbard, Kittson and 8 more | 63 min |
| Sep 13, 6:55 PM CDT | Severe Thunderstorm Watch | SPC | Becker, Beltrami, Cass, Clay, Clearwater, Hubbard and 11 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Nebraska, 2004Severe Thunderstorm Watches in Minnesota, 2004Severe Thunderstorm Watches in Iowa, 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.