Alert archive / Nebraska / Severe Thunderstorm Watches in 2002
Severe Thunderstorm Watch 444
The Storm Prediction Center issued this severe thunderstorm watch at Jun 19, 2002, 6:30 PM CDT for 4 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 19, 2002, 6:30 PM CDT (23:30 UTC)
- Expired
- Jun 19, 2002, 11:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 39 counties
Lyon County, IA, Osceola County, IA, Plymouth County, IA, Sioux County, IA, Cottonwood County, MN, Lincoln County, MN, Lyon County, MN, Murray County, MN, Nobles County, MN, Pipestone County, MN, Redwood County, MN, Rock County, MN, Antelope County, NE, Boone County, NE, Cedar County, NE, Colfax County, NE, Cuming County, NE, Dakota County, NE, Dixon County, NE, Greeley County, NE, Knox County, NE, Madison County, NE, Pierce County, NE, Platte County, NE, Stanton County, NE, Thurston County, NE, Wayne County, NE, Wheeler County, NE, Bon Homme County, SD, Brookings County, SD, Clay County, SD, Lake County, SD, Lincoln County, SD, McCook County, SD, Minnehaha County, SD, Moody County, SD, Turner County, SD, Union County, SD, Yankton County, SD
The radar
The Sioux Falls radar (KFSD), 112 km from the middle of the area, began a volume at 23:34 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
11 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 8:27 PM CDT | Severe Thunderstorm Warning | OAX | Knox | 48 min |
| Jun 19, 8:38 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 22 min |
| Jun 19, 8:48 PM CDT | Severe Thunderstorm Warning | FSD | Yankton | 27 min |
| Jun 19, 8:50 PM CDT | Severe Thunderstorm Warning | OAX | Antelope | 25 min |
| Jun 19, 9:01 PM CDT | Severe Thunderstorm Warning | LBF | Wheeler | 44 min |
| Jun 19, 9:08 PM CDT | Severe Thunderstorm Warning | OAX | Boone | 52 min |
| Jun 19, 9:12 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Sioux | 33 min |
| Jun 19, 9:29 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 31 min |
| Jun 19, 9:37 PM CDT | Tornado Warning | FSD | Plymouth | 23 min |
| Jun 19, 9:53 PM CDT | Tornado Warning | FSD | Sioux | 22 min |
| Jun 19, 10:00 PM CDT | Tornado Warning | FSD | Plymouth | 15 min |
The nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 11.5 hours before the alert went out and 266 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
- 1707 J/kg
- Mixed-layer CIN
- -113 J/kg
- Mixed-layer LCL
- 1094 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 138 m²/s²
- 0-3 km storm-relative helicity
- 267 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 5:15 AM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 14 more | 5 hr |
| Jun 19, 5:45 AM CDT | Severe Thunderstorm Watch | SPC | Big Stone, Douglas, Grant, Kandiyohi, Otter Tail, Pope and 6 more | 4 hr |
| Jun 19, 3:00 PM CDT | Tornado Watch | SPC | Becker, Big Stone, Cass, Chippewa, Clay, Clearwater and 15 more | 5 hr |
| Jun 19, 5:30 PM CDT | Severe Thunderstorm Watch | SPC | Beltrami, Koochiching, Pennington, Red Lake, Roseau, Saint Louis | 5 hr |
| Jun 19, 4:45 PM CDT | Severe Thunderstorm Watch | SPC | Buffalo, Dawson, Frontier, Furnas, Gosper, Harlan and 7 more | 5 hr |
| Jun 18, 8:45 PM CDT | Severe Thunderstorm Watch | SPC | Butte, Harding, Perkins, Ziebach | 4 hr |
| Jun 19, 1:00 AM CDT | Severe Thunderstorm Watch | SPC | Brown, Butte, Campbell, Corson, Dewey, Edmunds and 10 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Nebraska, 2002Severe Thunderstorm Watches in South Dakota, 2002Severe Thunderstorm Watches in Minnesota, 2002Every severe thunderstorm watch in 2002
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.