Alert archive / Nebraska / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 121
The Storm Prediction Center issued this severe thunderstorm watch at Apr 15, 2003, 5:15 PM CDT for 4 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 15, 2003, 5:15 PM CDT (22:15 UTC)
- Expired
- Apr 15, 2003, 11:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 66 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, Blaine County, NE, Boone County, NE, Boyd County, NE, Brown County, NE, Cedar County, NE, Colfax County, NE, Cuming County, NE, Custer County, NE, Dakota County, NE, Dixon County, NE, Garfield County, NE, Greeley County, NE, Holt County, NE, Howard County, NE, Knox County, NE, Logan County, NE, Loup County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Rock County, NE, Sherman County, NE, Stanton County, NE, Thurston County, NE, Valley County, NE, Wayne County, NE, Wheeler County, NE, Aurora County, SD, Beadle County, SD, Bon Homme County, SD, Brookings County, SD, Charles Mix County, SD, Clay County, SD, Davison County, SD, Douglas County, SD, Gregory County, SD, Hanson County, SD, Hutchinson County, SD, Jerauld County, SD, Kingsbury 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
Warnings issued inside it
9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 7:39 PM CDT | Severe Thunderstorm Warning | FSD | Yankton | 36 min |
| Apr 15, 7:52 PM CDT | Severe Thunderstorm Warning | LBF | Holt | 53 min |
| Apr 15, 8:05 PM CDT | Severe Thunderstorm Warning | LBF | Blaine | 25 min |
| Apr 15, 8:07 PM CDT | Severe Thunderstorm Warning | FSD | Turner | 38 min |
| Apr 15, 8:14 PM CDT | Severe Thunderstorm Warning | FSD | Yankton | 16 min |
| Apr 15, 8:21 PM CDT | Severe Thunderstorm Warning | LBF | Rock | 54 min |
| Apr 15, 8:44 PM CDT | Severe Thunderstorm Warning | FSD | Pipestone | 31 min |
| Apr 15, 8:47 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Minnehaha | 28 min |
| Apr 15, 9:18 PM CDT | Severe Thunderstorm Warning | LBF | Rock | 27 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, 10.3 hours before the alert went out and 215 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
- 39 J/kg
- Mixed-layer CIN
- -719 J/kg
- Mixed-layer LCL
- 1713 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 21 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 15, 4:07 PM CDT | Mesoscale Discussion | SPC | Anoka, Benton, Big Stone, Blue Earth, Brown, Carver and 42 more | 2 hr |
| Apr 15, 5:35 PM CDT | Severe Thunderstorm Watch | SPC | Anoka, Blue Earth, Brown, Carver, Chisago, Dakota and 28 more | 6 hr |
| Apr 15, 3:45 PM CDT | Tornado Watch | SPC | Buffalo, Dawson, Dundy, Franklin, Frontier, Furnas and 9 more | 5 hr |
| Apr 15, 4:46 PM CDT | Mesoscale Discussion | SPC | Antelope, Blaine, Boone, Boyd, Brown, Cedar and 19 more | 89 min |
| Apr 15, 6:57 PM CDT | Mesoscale Discussion | SPC | Buffalo, Dawson, Franklin, Frontier, Furnas, Gosper and 5 more | 93 min |
Nearby
Severe Thunderstorm Watches in Nebraska, 2003Severe Thunderstorm Watches in South Dakota, 2003Severe Thunderstorm Watches in Minnesota, 2003Every severe thunderstorm watch in 2003
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.