Alert archive / Iowa / Severe Thunderstorm Watches in 2004
Severe Thunderstorm Watch 213
The Storm Prediction Center issued this severe thunderstorm watch at May 17, 2004, 4:45 PM CDT for 4 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- May 17, 2004, 4:45 PM CDT (21:45 UTC)
- Expired
- May 17, 2004, 10:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 65 counties
Adair County, IA, Adams County, IA, Appanoose County, IA, Audubon County, IA, Boone County, IA, Cass County, IA, Clarke County, IA, Dallas County, IA, Decatur County, IA, Fremont County, IA, Grundy County, IA, Guthrie County, IA, Jasper County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Mills County, IA, Monroe County, IA, Montgomery County, IA, Page County, IA, Polk County, IA, Pottawattamie County, IA, Poweshiek County, IA, Ringgold County, IA, Story County, IA, Tama County, IA, Taylor County, IA, Union County, IA, Warren County, IA, Wayne County, IA, Atchison County, KS, Brown County, KS, Doniphan County, KS, Jackson County, KS, Marshall County, KS, Nemaha County, KS, Pottawatomie County, KS, Riley County, KS, Andrew County, MO, Atchison County, MO, Buchanan County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Holt County, MO, Mercer County, MO, Nodaway County, MO, Putnam County, MO, Schuyler County, MO, Sullivan County, MO, Worth County, MO, Cass County, NE, Douglas County, NE, Gage County, NE, Johnson County, NE, Lancaster County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE, Sarpy County, NE
The radar
The Omaha radar (KOAX), 123 km from the middle of the area, began a volume at 21:45 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
27 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 17, 5:00 PM CDT | Severe Thunderstorm Warning | DMX | Cass | 45 min |
| May 17, 5:05 PM CDT | Severe Thunderstorm Warning | DMX | Adair | 55 min |
| May 17, 5:05 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery | 40 min |
| May 17, 5:16 PM CDT | Severe Thunderstorm Warning | TOP | Marshall, Nemaha | 29 min |
| May 17, 5:22 PM CDT | Severe Thunderstorm Warning | DMX | Audubon | 38 min |
| May 17, 5:25 PM CDT | Severe Thunderstorm Warning | OAX | Otoe | 35 min |
| May 17, 5:26 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 64 min |
| May 17, 5:27 PM CDT | Severe Thunderstorm Warning | DMX | Dallas | 48 min |
| May 17, 5:29 PM CDT | Severe Thunderstorm Warning | OAX | Pawnee, Richardson | 46 min |
| May 17, 5:38 PM CDT | Severe Thunderstorm Warning | OAX | Nemaha | 37 min |
| May 17, 5:42 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 63 min |
| May 17, 5:44 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery | 31 min |
| May 17, 5:54 PM CDT | Severe Thunderstorm Warning | TOP | Brown, Nemaha | 36 min |
| May 17, 5:58 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Madison | 47 min |
| May 17, 6:02 PM CDT | Severe Thunderstorm Warning | DMX | Polk | 43 min |
| May 17, 6:03 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 27 min |
| May 17, 6:08 PM CDT | Severe Thunderstorm Warning | DMX | Adams | 52 min |
| May 17, 6:14 PM CDT | Severe Thunderstorm Warning | OAX | Richardson | 31 min |
| May 17, 6:16 PM CDT | Severe Thunderstorm Warning | OAX | Page | 44 min |
| May 17, 6:39 PM CDT | Severe Thunderstorm Warning | DMX | Poweshiek | 51 min |
| May 17, 6:44 PM CDT | Severe Thunderstorm Warning | DMX | Madison, Warren | 61 min |
| May 17, 6:45 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Polk | 60 min |
| May 17, 6:59 PM CDT | Severe Thunderstorm Warning | DMX | Adams, Union | 61 min |
| May 17, 7:45 PM CDT | Flash Flood Warning | DMX | Emmet, Madison, Palo Alto, Warren | 121 days |
| May 17, 7:47 PM CDT | Severe Thunderstorm Warning | DMX | Warren | 43 min |
| May 17, 8:41 PM CDT | Severe Thunderstorm Warning | DMX | Marion | 34 min |
| May 17, 9:04 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska | 41 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
Omaha, NE (KOAX), launched 12:00Z, 9.8 hours before the alert went out and 124 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
- 207 J/kg
- Mixed-layer CIN
- -418 J/kg
- Mixed-layer LCL
- 1116 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 280 m²/s²
- 0-3 km storm-relative helicity
- 250 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 16, 8:21 PM CDT | Mesoscale Discussion | SPC | Emmet | 114 min |
| May 16, 9:26 PM CDT | Mesoscale Discussion | SPC | Adams, Audubon, Buena Vista, Calhoun, Carroll, Cass and 28 more | 3 hr |
| May 17, 12:41 PM CDT | Mesoscale Discussion | SPC | Benton, Buchanan, Clayton, Delaware, Dubuque, Jackson and 2 more | 3 hr |
| May 17, 1:42 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Calhoun, Carroll, Cherokee, Crawford, Harrison and 4 more | 2 hr |
| May 17, 3:52 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Benton, Cass, Clarke and 33 more | 113 min |
| May 17, 6:44 PM CDT | Mesoscale Discussion | SPC | Dubuque | 61 min |
| May 16, 8:07 PM CDT | Mesoscale Discussion | SPC | Clay, Cloud, Jewell, Lincoln, Marshall, Mitchell and 7 more | 83 min |
| May 16, 8:57 PM CDT | Mesoscale Discussion | SPC | Clark, Ellis, Finney, Ford, Gove, Grant and 18 more | 93 min |
| May 16, 11:51 PM CDT | Mesoscale Discussion | SPC | Harvey, Kingman, Pawnee, Reno, Sedgwick, Stafford | 114 min |
| May 17, 3:08 PM CDT | Mesoscale Discussion | SPC | Barton, Chase, Clark, Clay, Cloud, Comanche and 54 more | 3 hr |
| May 17, 3:40 PM CDT | Tornado Watch | SPC | Barton, Butler, Clark, Clay, Dickinson, Edwards and 40 more | 6 hr |
| May 16, 7:27 PM CDT | Mesoscale Discussion | SPC | Antelope, Boone, Butler, Cedar, Colfax, Cuming and 18 more | 3 hr |
Nearby
Severe Thunderstorm Watches in Iowa, 2004Severe Thunderstorm Watches in Missouri, 2004Severe Thunderstorm Watches in Nebraska, 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.