Alert archive / Iowa / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 500
The Storm Prediction Center issued this severe thunderstorm watch at Jun 9, 2003, 9:45 PM CDT for 43 counties in Iowa. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 9, 2003, 9:45 PM CDT (02:45 UTC)
- Expired
- Jun 10, 2003, 4:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 43 counties
Adair County, IA, Adams County, IA, Appanoose County, IA, Audubon County, IA, Boone County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Clarke County, IA, Crawford County, IA, Dallas County, IA, Davis County, IA, Decatur County, IA, Fremont County, IA, Greene County, IA, Grundy County, IA, Guthrie County, IA, Hamilton County, IA, Hardin County, IA, Ida County, IA, Jasper County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Monroe County, IA, Montgomery County, IA, Page County, IA, Polk County, IA, Pottawattamie County, IA, Poweshiek County, IA, Ringgold County, IA, Sac County, IA, Shelby County, IA, Story County, IA, Tama County, IA, Taylor County, IA, Union County, IA, Wapello County, IA, Warren County, IA, Wayne County, IA, Webster County, IA
The radar
The Des Moines radar (KDMX), 44 km from the middle of the area, began a volume at 02:49 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
2 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 10:32 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 28 min |
| Jun 9, 11:52 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 38 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 00:00Z, 2.8 hours before the alert went out and 181 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
- 223 J/kg
- Mixed-layer CIN
- -235 J/kg
- Mixed-layer LCL
- 2359 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 132 m²/s²
- 0-3 km storm-relative helicity
- 272 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 7:23 PM CDT | Mesoscale Discussion | SPC | Monona | 2 hr |
| Jun 9, 8:52 PM CDT | Mesoscale Discussion | SPC | Monona, Woodbury | 113 min |
| Jun 9, 9:22 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Boone, Carroll and 32 more | 53 min |
| Jun 9, 10:10 PM CDT | Severe Thunderstorm Watch | SPC | Cass, Fremont, Mills, Montgomery, Pottawattamie | 6 hr |
| Jun 9, 10:13 PM CDT | Mesoscale Discussion | SPC | Lyon, O'Brien, Osceola, Sioux | 2 hr |
| Jun 9, 11:20 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Carroll, Cass and 16 more | 115 min |
| Jun 9, 11:46 PM CDT | Mesoscale Discussion | SPC | Fremont, Mills, Montgomery, Page | 119 min |
| Jun 10, 2:44 AM CDT | Mesoscale Discussion | SPC | Appanoose, Decatur, Lucas, Mahaska, Monroe, Ringgold and 2 more | 2 hr |
Nearby
Severe 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.