Alert archive / South Dakota / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 677
The Storm Prediction Center issued this severe thunderstorm watch at Jul 7, 2003, 11:40 PM CDT for 6 counties in Iowa; 11 counties in Minnesota; 24 counties in South Dakota. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 7, 2003, 11:40 PM CDT (04:40 UTC)
- Expired
- Jul 8, 2003, 5:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 41 counties
Clay County, IA, Dickinson County, IA, Lyon County, IA, O'Brien County, IA, Osceola County, IA, Sioux County, IA, Brown County, MN, Cottonwood County, MN, Jackson County, MN, Lincoln County, MN, Lyon County, MN, Murray County, MN, Nobles County, MN, Pipestone County, MN, Redwood County, MN, Rock County, MN, Watonwan County, MN, Aurora County, SD, Beadle County, SD, Bon Homme County, SD, Brookings County, SD, Brule County, SD, Buffalo County, SD, Charles Mix County, SD, Davison County, SD, Douglas County, SD, Gregory County, SD, Hand 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, Yankton County, SD
The radar
The Sioux Falls radar (KFSD), 57 km from the middle of the area, began a volume at 04:43 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
15 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 11:46 PM CDT | Severe Thunderstorm Warning | FSD | Turner | 29 min |
| Jul 8, 12:07 AM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 23 min |
| Jul 8, 12:13 AM CDT | Severe Thunderstorm Warning | FSD | Turner | 32 min |
| Jul 8, 12:21 AM CDT | Severe Thunderstorm Warning | FSD | Hutchinson | 39 min |
| Jul 8, 12:25 AM CDT | Severe Thunderstorm Warning | FSD | Gregory | 50 min |
| Jul 8, 12:28 AM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 47 min |
| Jul 8, 12:56 AM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Yankton | 34 min |
| Jul 8, 1:26 AM CDT | Severe Thunderstorm Warning | FSD | Sioux | 34 min |
| Jul 8, 1:28 AM CDT | Severe Thunderstorm Warning | FSD | Sioux | 32 min |
| Jul 8, 1:29 AM CDT | Severe Thunderstorm Warning | FSD | Bon Homme | 31 min |
| Jul 8, 1:31 AM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 29 min |
| Jul 8, 2:01 AM CDT | Severe Thunderstorm Warning | FSD | Sioux | 29 min |
| Jul 8, 2:02 AM CDT | Flash Flood Warning | FSD | Bon Homme | 118 min |
| Jul 8, 2:20 AM CDT | Severe Thunderstorm Warning | FSD | O'Brien | 25 min |
| Jul 8, 2:32 AM CDT | Severe Thunderstorm Warning | FSD | Sioux | 28 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, 4.7 hours before the alert went out and 161 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
- 87 J/kg
- Mixed-layer CIN
- -154 J/kg
- Mixed-layer LCL
- 1285 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- -72 m²/s²
- 0-3 km storm-relative helicity
- -114 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 7:16 PM CDT | Mesoscale Discussion | SPC | Adair, Audubon, Benton, Cass, Cedar, Clinton and 20 more | 3 hr |
| Jul 7, 10:15 PM CDT | Mesoscale Discussion | SPC | Crawford, Harrison, Ida, Monona, Plymouth, Pottawattamie and 1 more | 3 hr |
| Jul 7, 10:20 PM CDT | Severe Thunderstorm Watch | SPC | Cherokee, Crawford, Fremont, Harrison, Ida, Mills and 4 more | 7 hr |
| Jul 7, 11:25 PM CDT | Mesoscale Discussion | SPC | Clay, Dickinson, Emmet, Kossuth, Lyon, O'Brien and 3 more | 2 hr |
| Jul 8, 1:34 AM CDT | Mesoscale Discussion | SPC | Cherokee, Crawford, Fremont, Harrison, Ida, Mills and 5 more | 116 min |
| Jul 8, 2:52 AM CDT | Mesoscale Discussion | SPC | Benton, Black Hawk, Boone, Bremer, Buchanan, Buena Vista and 49 more | 113 min |
| Jul 8, 8:50 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Boone, Cass and 32 more | 115 min |
| Jul 8, 9:50 AM CDT | Severe Thunderstorm Watch | SPC | Appanoose, Benton, Black Hawk, Buchanan, Cedar, Clinton and 33 more | 5 hr |
| Jul 8, 12:59 PM CDT | Mesoscale Discussion | SPC | Benton, Black Hawk, Buchanan, Cedar, Clinton, Delaware and 17 more | 91 min |
| Jul 8, 1:45 PM CDT | Tornado Watch | SPC | Cedar, Clinton, Des Moines, Henry, Jackson, Johnson and 7 more | 5 hr |
| Jul 8, 3:40 PM CDT | Mesoscale Discussion | SPC | Des Moines, Henry, Lee | 95 min |
| Jul 8, 5:13 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Cass, Clarke and 19 more | 92 min |
| Jul 8, 6:15 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Appanoose, Audubon, Cass, Clarke and 22 more | 5 hr |
| Jul 8, 6:46 PM CDT | Mesoscale Discussion | SPC | Appanoose, Davis, Decatur, Lee, Ringgold, Taylor and 2 more | 3 hr |
| Jul 8, 10:44 AM CDT | Mesoscale Discussion | SPC | Aurora, Beadle, Brown, Brule, Buffalo, Clark and 28 more | 91 min |
| Jul 8, 2:36 PM CDT | Mesoscale Discussion | SPC | Butte, Custer, Fall River, Lawrence, Pennington | 84 min |
| Jul 8, 3:05 PM CDT | Tornado Watch | SPC | Bennett, Butte, Custer, Fall River, Harding, Jackson and 5 more | 7 hr |
| Jul 8, 5:38 PM CDT | Mesoscale Discussion | SPC | Bennett, Butte, Custer, Fall River, Harding, Lawrence and 4 more | 67 min |
Nearby
Severe Thunderstorm Watches in South Dakota, 2003Severe Thunderstorm Watches in Minnesota, 2003Severe Thunderstorm Watches in Iowa, 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.