Alert archive / South Dakota / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 768
The Storm Prediction Center issued this severe thunderstorm watch at Jul 20, 2003, 1:15 AM CDT for 21 counties in Minnesota; 30 counties in South Dakota. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 20, 2003, 1:15 AM CDT (06:15 UTC)
- Expired
- Jul 20, 2003, 7:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 51 counties
Big Stone County, MN, Chippewa County, MN, Cottonwood County, MN, Douglas County, MN, Grant County, MN, Jackson County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Lincoln County, MN, Lyon County, MN, Murray County, MN, Nobles County, MN, Pipestone County, MN, Pope County, MN, Redwood County, MN, Renville County, MN, Rock County, MN, Stevens County, MN, Swift County, MN, Traverse County, MN, Yellow Medicine County, MN, Aurora County, SD, Beadle County, SD, Brookings County, SD, Brown County, SD, Brule County, SD, Buffalo County, SD, Clark County, SD, Codington County, SD, Davison County, SD, Day County, SD, Deuel County, SD, Edmunds County, SD, Faulk County, SD, Grant County, SD, Hamlin County, SD, Hand County, SD, Hanson County, SD, Hyde County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, Marshall County, SD, McCook County, SD, McPherson County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Roberts County, SD, Sanborn County, SD, Spink County, SD
The radar
The Aberdeen radar (KABR), 78 km from the middle of the area, began a volume at 06:17 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
26 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 1:15 AM CDT | Severe Thunderstorm Warning | ABR | Clark | 45 min |
| Jul 20, 1:22 AM CDT | Severe Thunderstorm Warning | ABR | Faulk | 38 min |
| Jul 20, 1:41 AM CDT | Severe Thunderstorm Warning | ABR | Spink | 49 min |
| Jul 20, 1:55 AM CDT | Severe Thunderstorm Warning | ABR | Clark | 50 min |
| Jul 20, 2:02 AM CDT | Severe Thunderstorm Warning | ABR | Codington, Hamlin | 58 min |
| Jul 20, 2:09 AM CDT | Severe Thunderstorm Warning | ABR | Day | 51 min |
| Jul 20, 2:36 AM CDT | Severe Thunderstorm Warning | ABR | Grant | 54 min |
| Jul 20, 3:12 AM CDT | Severe Thunderstorm Warning | ABR | Marshall | 63 min |
| Jul 20, 3:20 AM CDT | Severe Thunderstorm Warning | FSD | Brookings, Kingsbury | 55 min |
| Jul 20, 3:21 AM CDT | Severe Thunderstorm Warning | MPX | Lac qui Parle, Yellow Medicine | 54 min |
| Jul 20, 3:22 AM CDT | Severe Thunderstorm Warning | ABR | Roberts | 38 min |
| Jul 20, 3:34 AM CDT | Severe Thunderstorm Warning | ABR | Grant | 26 min |
| Jul 20, 3:34 AM CDT | Tornado Warning | ABR | Marshall | 41 min |
| Jul 20, 3:46 AM CDT | Severe Thunderstorm Warning | ABR | Big Stone | 44 min |
| Jul 20, 4:02 AM CDT | Severe Thunderstorm Warning | ABR | Day | 58 min |
| Jul 20, 4:04 AM CDT | Severe Thunderstorm Warning | ABR | Marshall | 26 min |
| Jul 20, 4:23 AM CDT | Severe Thunderstorm Warning | ABR | Roberts | 52 min |
| Jul 20, 4:32 AM CDT | Severe Thunderstorm Warning | ABR | Marshall | 58 min |
| Jul 20, 4:47 AM CDT | Severe Thunderstorm Warning | ABR | Grant | 43 min |
| Jul 20, 5:08 AM CDT | Severe Thunderstorm Warning | MPX | Lac qui Parle | 52 min |
| Jul 20, 5:09 AM CDT | Severe Thunderstorm Warning | ABR | Brown | 21 min |
| Jul 20, 5:20 AM CDT | Severe Thunderstorm Warning | ABR | Roberts | 40 min |
| Jul 20, 5:31 AM CDT | Severe Thunderstorm Warning | ABR | Marshall | 44 min |
| Jul 20, 5:54 AM CDT | Severe Thunderstorm Warning | MPX | Yellow Medicine | 36 min |
| Jul 20, 6:30 AM CDT | Severe Thunderstorm Warning | ABR | Marshall | 15 min |
| Jul 20, 6:42 AM CDT | Severe Thunderstorm Warning | ABR | Roberts | 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, 6.3 hours before the alert went out and 59 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
- 2126 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 2042 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 145 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 7:16 PM CDT | Mesoscale Discussion | SPC | Beltrami, Clearwater, Itasca, Kittson, Koochiching, Marshall and 5 more | 89 min |
| Jul 19, 11:00 PM CDT | Severe Thunderstorm Watch | SPC | Becker, Beltrami, Clay, Clearwater, Hubbard, Mahnomen and 7 more | 5 hr |
| Jul 20, 2:03 AM CDT | Mesoscale Discussion | SPC | Big Stone, Chippewa, Grant, Lac qui Parle, Lincoln, Lyon and 6 more | 117 min |
| Jul 20, 3:05 AM CDT | Severe Thunderstorm Watch | SPC | Becker, Clay, Grant, Norman, Otter Tail, Wilkin | 4 hr |
| Jul 20, 4:14 AM CDT | Mesoscale Discussion | SPC | Blue Earth, Brown, Carver, Chippewa, Cottonwood, Dakota and 34 more | 3 hr |
| Jul 20, 6:45 AM CDT | Severe Thunderstorm Watch | SPC | Blue Earth, Brown, Cottonwood, Faribault, Freeborn, Jackson and 15 more | 5 hr |
| Jul 20, 10:07 AM CDT | Mesoscale Discussion | SPC | Cottonwood, Jackson, Lincoln, Lyon, Murray, Nobles and 3 more | 53 min |
| Jul 20, 1:16 PM CDT | Mesoscale Discussion | SPC | Beltrami, Cook, Itasca, Koochiching, Lake, Lake of the Woods and 2 more | 119 min |
| Jul 20, 1:55 PM CDT | Severe Thunderstorm Watch | SPC | Carlton, Lake, Saint Louis | 7 hr |
| Jul 20, 3:27 PM CDT | Mesoscale Discussion | SPC | Carlton, Lake, Saint Louis | 63 min |
| Jul 20, 5:14 PM CDT | Mesoscale Discussion | SPC | Lincoln, Lyon, Murray, Pipestone, Rock, Yellow Medicine | 2 hr |
| Jul 20, 6:47 PM CDT | Mesoscale Discussion | SPC | Lake, Saint Louis | 88 min |
| Jul 19, 11:58 PM CDT | Mesoscale Discussion | SPC | Brown, Clark, Codington, Day, Deuel, Edmunds and 6 more | 62 min |
| Jul 20, 2:09 PM CDT | Mesoscale Discussion | SPC | Bon Homme, Charles Mix, Clay, Hutchinson, Lincoln, Minnehaha and 3 more | 66 min |
| Jul 20, 2:50 PM CDT | Tornado Watch | SPC | Bon Homme, Clay, Union, Yankton | 6 hr |
Nearby
Severe 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; radar from the NEXRAD Level II archive.