Alert archive / Nebraska / Severe Thunderstorm Watches in 2004
Severe Thunderstorm Watch 683
The Storm Prediction Center issued this severe thunderstorm watch at Aug 1, 2004, 10:35 PM CDT for 15 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 1, 2004, 10:35 PM CDT (03:35 UTC)
- Expired
- Aug 2, 2004, 4:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 27 counties
Antelope County, NE, Boyd County, NE, Burt County, NE, Cedar County, NE, Cuming County, NE, Dakota County, NE, Dixon County, NE, Holt County, NE, Knox County, NE, Madison County, NE, Pierce County, NE, Stanton County, NE, Thurston County, NE, Wayne County, NE, Wheeler County, NE, Aurora County, SD, Bon Homme County, SD, Brule County, SD, Charles Mix County, SD, Clay County, SD, Davison County, SD, Douglas County, SD, Hanson County, SD, Hutchinson County, SD, McCook County, SD, Turner County, SD, Yankton County, SD
The radar
The Sioux Falls radar (KFSD), 97 km from the middle of the area, began a volume at 03:37 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
8 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 12:05 AM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule | 55 min |
| Aug 2, 12:39 AM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson | 36 min |
| Aug 2, 1:00 AM CDT | Severe Thunderstorm Warning | FSD | Aurora, Douglas, Miner | 30 min |
| Aug 2, 1:11 AM CDT | Severe Thunderstorm Warning | FSD | McCook, Minnehaha | 49 min |
| Aug 2, 1:15 AM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson, Hutchinson | 45 min |
| Aug 2, 1:30 AM CDT | Severe Thunderstorm Warning | FSD | Douglas | 30 min |
| Aug 2, 1:51 AM CDT | Severe Thunderstorm Warning | FSD | Turner | 39 min |
| Aug 2, 1:57 AM CDT | Severe Thunderstorm Warning | FSD | Hutchinson | 33 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
Aberdeen, SD (KABR), launched 00:00Z, 3.6 hours before the alert went out and 208 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
- 3501 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 1092 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 112 m²/s²
- 0-3 km storm-relative helicity
- 305 m²/s²
- Significant tornado parameter
- 3.8
- Supercell composite
- 15.7
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 3:02 AM CDT | Mesoscale Discussion | SPC | Antelope, Burt, Cedar, Cuming, Dakota, Dixon and 8 more | 58 min |
| Aug 2, 4:56 AM CDT | Mesoscale Discussion | SPC | Nemaha, Richardson | 94 min |
| Aug 2, 4:23 PM CDT | Mesoscale Discussion | SPC | Antelope, Boyd, Brown, Cedar, Cherry, Dixon and 7 more | 37 min |
| Aug 2, 4:55 PM CDT | Severe Thunderstorm Watch | SPC | Antelope, Blaine, Boone, Brown, Cedar, Colfax and 15 more | 5 hr |
| Aug 1, 7:22 PM CDT | Mesoscale Discussion | SPC | Beadle, Brookings, Brown, Campbell, Clark, Codington and 17 more | 53 min |
| Aug 1, 7:45 PM CDT | Tornado Watch | SPC | Beadle, Brookings, Brown, Buffalo, Campbell, Clark and 26 more | 6 hr |
| Aug 1, 10:00 PM CDT | Mesoscale Discussion | SPC | Beadle, Buffalo, Campbell, Edmunds, Faulk, Hand and 7 more | 60 min |
| Aug 1, 11:29 PM CDT | Mesoscale Discussion | SPC | Aurora, Beadle, Bon Homme, Brule, Buffalo, Charles Mix and 19 more | 61 min |
| Aug 2, 12:20 AM CDT | Severe Thunderstorm Watch | SPC | Lake, Lincoln, Minnehaha, Moody, Union | 4 hr |
| Aug 2, 3:12 PM CDT | Mesoscale Discussion | SPC | Beadle, Brookings, Clark, Deuel, Hamlin, Jerauld and 7 more | 2 hr |
| Aug 2, 3:50 PM CDT | Severe Thunderstorm Watch | SPC | Brookings, Davison, Hanson, Kingsbury, Lake, McCook and 4 more | 5 hr |
| Aug 2, 6:30 PM CDT | Severe Thunderstorm Watch | SPC | Aurora, Bennett, Bon Homme, Brule, Buffalo, Charles Mix and 17 more | 6 hr |
Nearby
Severe Thunderstorm Watches in Nebraska, 2004Severe Thunderstorm Watches in South Dakota, 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.