Alert archive / Nebraska / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 873
The Storm Prediction Center issued this severe thunderstorm watch at Aug 19, 2003, 7:10 PM CDT for 34 counties in Nebraska; 12 counties in South Dakota. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 19, 2003, 7:10 PM CDT (00:10 UTC)
- Expired
- Aug 20, 2003, 12:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 46 counties
Adams County, NE, Antelope County, NE, Blaine County, NE, Boone County, NE, Boyd County, NE, Brown County, NE, Buffalo County, NE, Custer County, NE, Dawson County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Garfield County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Harlan County, NE, Holt County, NE, Howard County, NE, Kearney County, NE, Keya Paha County, NE, Knox County, NE, Logan County, NE, Loup County, NE, Merrick County, NE, Nance County, NE, Phelps County, NE, Pierce County, NE, Red Willow County, NE, Rock County, NE, Sherman County, NE, Valley County, NE, Webster County, NE, Wheeler County, NE, Aurora County, SD, Bon Homme County, SD, Brule County, SD, Charles Mix County, SD, Davison County, SD, Douglas County, SD, Gregory County, SD, Hanson County, SD, Hutchinson County, SD, McCook County, SD, Tripp County, SD, Yankton County, SD
The radar
The North Platte radar (KLNX), 106 km from the middle of the area, began a volume at 00:09 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
7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 7:50 PM CDT | Severe Thunderstorm Warning | LBF | Blaine, Custer | 55 min |
| Aug 19, 7:52 PM CDT | Severe Thunderstorm Warning | FSD | Brule | 23 min |
| Aug 19, 8:59 PM CDT | Severe Thunderstorm Warning | LBF | Rock | 46 min |
| Aug 19, 10:05 PM CDT | Severe Thunderstorm Warning | FSD | Gregory | 40 min |
| Aug 19, 10:29 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix | 46 min |
| Aug 19, 10:38 PM CDT | Severe Thunderstorm Warning | FSD | Douglas | 52 min |
| Aug 19, 11:01 PM CDT | Severe Thunderstorm Warning | GID | Adams, Franklin, Kearney | 59 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
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.2 hours before the alert went out and 105 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
- 1637 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 2223 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.4
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 1:42 PM CDT | Mesoscale Discussion | SPC | Campbell, McPherson | 93 min |
| Aug 20, 5:04 PM CDT | Mesoscale Discussion | SPC | Aurora, Beadle, Brookings, Brown, Clark, Codington and 23 more | 116 min |
Nearby
Severe Thunderstorm Watches in Nebraska, 2003Severe Thunderstorm Watches in South Dakota, 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; radar from the NEXRAD Level II archive.