Alert archive / Iowa / Mesoscale Discussions in 2003
Mesoscale Discussion 1665
The Storm Prediction Center issued this mesoscale discussion at Jul 6, 2003, 11:06 PM CDT for 4 states. It was in force for 114 min.
The area
The outline as issued.
The facts
- Issued
- Jul 6, 2003, 11:06 PM CDT (04:06 UTC)
- Expired
- Jul 7, 2003, 1:00 AM CDT
- In force
- 114 min
- Issued by
- the Storm Prediction Center
All 157 counties
Adair County, IA, Adams County, IA, Appanoose County, IA, Audubon County, IA, Boone County, IA, Buena Vista County, IA, Butler County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Cerro Gordo County, IA, Cherokee County, IA, Clarke County, IA, Clay County, IA, Crawford County, IA, Dallas County, IA, Decatur County, IA, Dickinson County, IA, Emmet County, IA, Floyd County, IA, Franklin County, IA, Fremont County, IA, Greene County, IA, Grundy County, IA, Guthrie County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Harrison County, IA, Humboldt County, IA, Ida County, IA, Jasper County, IA, Kossuth County, IA, Lucas County, IA, Lyon County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Mills County, IA, Mitchell County, IA, Monona County, IA, Monroe County, IA, Montgomery County, IA, O'Brien County, IA, Osceola County, IA, Page County, IA, Palo Alto County, IA, Plymouth County, IA, Pocahontas County, IA, Polk County, IA, Pottawattamie County, IA, Poweshiek County, IA, Ringgold County, IA, Sac County, IA, Shelby County, IA, Sioux County, IA, Story County, IA, Tama County, IA, Taylor County, IA, Union County, IA, Warren County, IA, Wayne County, IA, Webster County, IA, Winnebago County, IA, Woodbury County, IA, Worth County, IA, Wright County, IA, Anoka County, MN, Benton County, MN, Brown County, MN, Carver County, MN, Chippewa County, MN, Chisago County, MN, Cottonwood County, MN, Hennepin County, MN, Isanti County, MN, Jackson County, MN, Kanabec County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Lincoln County, MN, Lyon County, MN, Martin County, MN, McLeod County, MN, Meeker County, MN, Mille Lacs County, MN, Murray County, MN, Nicollet County, MN, Nobles County, MN, Pipestone County, MN, Pope County, MN, Redwood County, MN, Renville County, MN, Rock County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Swift County, MN, Watonwan County, MN, Wright County, MN, Yellow Medicine County, MN, Antelope County, NE, Boone County, NE, Burt County, NE, Butler County, NE, Cass County, NE, Cedar County, NE, Colfax County, NE, Cuming County, NE, Dakota County, NE, Dixon County, NE, Dodge County, NE, Douglas County, NE, Hamilton County, NE, Knox County, NE, Lancaster County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Otoe County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Stanton County, NE, Thurston County, NE, Washington County, NE, Wayne County, NE, York County, NE, Aurora County, SD, Bon Homme County, SD, Brookings County, SD, Brule County, SD, Charles Mix County, SD, Clay County, SD, Davison County, SD, Deuel County, SD, Douglas County, SD, Gregory County, SD, Hamlin 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
The radar
The Sioux Falls radar (KFSD), 115 km from the middle of the area, began a volume at 04:08 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.
The watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 4.1 hours before the alert went out and 203 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
- 4152 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 1702 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 143 m²/s²
- 0-3 km storm-relative helicity
- 274 m²/s²
- Significant tornado parameter
- 1.8
- Supercell composite
- 103.4
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 7:45 PM CDT | Tornado Watch | SPC | Clay, Dickinson, Lyon, O'Brien, Osceola, Sioux | 6 hr |
| Jul 6, 8:57 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Buena Vista, Calhoun and 35 more | 3 hr |
| Jul 6, 9:20 PM CDT | Tornado Watch | SPC | Adair, Adams, Appanoose, Audubon, Boone, Buena Vista and 62 more | 6 hr |
| Jul 7, 1:25 AM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 16 more | 95 min |
| Jul 7, 2:40 AM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Chickasaw and 12 more | 4 hr |
| Jul 7, 4:22 AM CDT | Mesoscale Discussion | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Chickasaw, Clayton and 5 more | 83 min |
| Jul 7, 6:23 AM CDT | Mesoscale Discussion | SPC | Cedar, Clinton, Delaware, Dubuque, Iowa, Jackson and 5 more | 97 min |
| Jul 7, 12:14 PM CDT | Mesoscale Discussion | SPC | Clinton, Des Moines, Lee, Louisa, Muscatine, Scott | 61 min |
| Jul 7, 2:35 PM CDT | Mesoscale Discussion | SPC | Allamakee, Clayton, Delaware, Dubuque | 115 min |
| Jul 7, 3:30 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Benton, Cass and 31 more | 3 hr |
| Jul 7, 3:35 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Audubon, Benton, Cass, Cedar and 29 more | 5 hr |
| Jul 6, 8:05 PM CDT | Tornado Watch | SPC | Aitkin, Carlton, Cass, Cook, Crow Wing, Itasca and 6 more | 6 hr |
| Jul 6, 10:31 PM CDT | Mesoscale Discussion | SPC | Aitkin, Carlton, Cook, Crow Wing, Kanabec, Morrison and 2 more | 119 min |
| Jul 7, 2:56 AM CDT | Mesoscale Discussion | SPC | Anoka, Benton, Carver, Chisago, Dakota, Hennepin and 9 more | 2 hr |
| Jul 7, 3:52 PM CDT | Mesoscale Discussion | SPC | Banner, Chase, Cheyenne, Deuel, Kimball, Perkins and 1 more | 2 hr |
| Jul 7, 4:16 PM CDT | Mesoscale Discussion | SPC | Adams, Arthur, Boone, Buffalo, Butler, Cass and 49 more | 2 hr |
| Jul 7, 6:00 PM CDT | Severe Thunderstorm Watch | SPC | Arthur, Banner, Box Butte, Chase, Cheyenne, Deuel and 17 more | 6 hr |
Nearby
Mesoscale Discussions in Iowa, 2003Mesoscale Discussions in Minnesota, 2003Mesoscale Discussions in Nebraska, 2003Every mesoscale discussion 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.