Alert archive / Iowa / Mesoscale Discussions in 2005
Mesoscale Discussion 1406
The Storm Prediction Center issued this mesoscale discussion at Jun 20, 2005, 6:38 PM CDT for 32 counties in Iowa; Burt County, Dakota County, Thurston County, Nebraska. It was in force for 97 min.
The area
The outline as issued.
The facts
- Issued
- Jun 20, 2005, 6:38 PM CDT (23:38 UTC)
- Expired
- Jun 20, 2005, 8:15 PM CDT
- In force
- 97 min
- Issued by
- the Storm Prediction Center
All 35 counties
Adair County, IA, Adams 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, Greene County, IA, Grundy County, IA, Guthrie County, IA, Hamilton County, IA, Hardin County, IA, Harrison County, IA, Ida County, IA, Jasper County, IA, Lucas County, IA, Madison County, IA, Marion County, IA, Marshall County, IA, Monona County, IA, Polk County, IA, Pottawattamie County, IA, Sac County, IA, Shelby County, IA, Story County, IA, Union County, IA, Warren County, IA, Webster County, IA, Woodbury County, IA, Burt County, NE, Dakota County, NE, Thurston County, NE
The radar
The Des Moines radar (KDMX), 101 km from the middle of the area, began a volume at 23:39 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 nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 11.6 hours before the alert went out and 153 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
- 109 J/kg
- Mixed-layer CIN
- -545 J/kg
- Mixed-layer LCL
- 1191 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 77 m²/s²
- 0-3 km storm-relative helicity
- 118 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
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 |
|---|---|---|---|---|
| Jun 20, 1:25 PM CDT | Severe Thunderstorm Watch | SPC | Winnebago, Worth | 7 hr |
| Jun 20, 3:45 PM CDT | Severe Thunderstorm Watch | SPC | Buena Vista, Calhoun, Cerro Gordo, Cherokee, Clay, Dickinson and 20 more | 6 hr |
| Jun 20, 2:13 PM CDT | Mesoscale Discussion | SPC | Banner, Box Butte, Boyd, Brown, Cherry, Cheyenne and 11 more | 2 hr |
Nearby
Mesoscale Discussions in Iowa, 2005Mesoscale Discussions in Nebraska, 2005Every mesoscale discussion in 2005
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.