Alert archive / Iowa / Mesoscale Discussions in 2008
Mesoscale Discussion 723
The Storm Prediction Center issued this mesoscale discussion at Apr 25, 2008, 4:22 AM CDT for Henderson County, Mercer County, Rock Island County, Illinois; 37 counties in Iowa; 17 counties in Missouri. It was in force for 23 min.
The area
The outline as issued.
The facts
- Issued
- Apr 25, 2008, 4:22 AM CDT (09:22 UTC)
- Expired
- Apr 25, 2008, 4:45 AM CDT
- In force
- 23 min
- Issued by
- the Storm Prediction Center
All 57 counties
Appanoose County, IA, Benton County, IA, Cedar County, IA, Clarke County, IA, Clinton County, IA, Davis County, IA, Decatur County, IA, Des Moines County, IA, Henry County, IA, Iowa County, IA, Jasper County, IA, Jefferson County, IA, Johnson County, IA, Jones County, IA, Keokuk County, IA, Lee County, IA, Linn County, IA, Louisa County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Monroe County, IA, Muscatine County, IA, Polk County, IA, Poweshiek County, IA, Ringgold County, IA, Scott County, IA, Tama County, IA, Taylor County, IA, Union County, IA, Van Buren County, IA, Wapello County, IA, Warren County, IA, Washington County, IA, Wayne County, IA, Henderson County, IL, Mercer County, IL, Rock Island County, IL, Adair County, MO, Clark County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Knox County, MO, Lewis County, MO, Linn County, MO, Macon County, MO, Mercer County, MO, Putnam County, MO, Schuyler County, MO, Scotland County, MO, Sullivan County, MO, Worth County, MO
The radar
The Des Moines radar (KDMX), 105 km from the middle of the area, began a volume at 09:25 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
Davenport, (KDVN), launched 00:00Z, 9.4 hours before the alert went out and 202 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
- 158 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 495 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 226 m²/s²
- 0-3 km storm-relative helicity
- 289 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
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 |
|---|---|---|---|---|
| Apr 25, 4:51 AM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Carroll, Hancock, Henderson, Henry and 8 more | 5 hr |
| Apr 25, 9:10 AM CDT | Mesoscale Discussion | SPC | Boone, Carroll, Jo Daviess, Lee, Ogle, Rock Island and 3 more | 65 min |
| Apr 25, 12:21 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Carroll, Fulton, Hancock, Henderson and 10 more | 54 min |
| Apr 25, 1:27 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Boone, Brown, Bureau, Calhoun, Carroll and 38 more | 7 hr |
| Apr 25, 3:28 PM CDT | Mesoscale Discussion | SPC | Bureau, Carroll, Henry, Jo Daviess, Knox, Lee and 7 more | 62 min |
| Apr 25, 3:41 PM CDT | Tornado Watch | SPC | Boone, Bureau, Carroll, Cass, DeKalb, Fulton and 34 more | 4 hr |
| Apr 25, 5:18 PM CDT | Mesoscale Discussion | SPC | Bureau, Carroll, Henry, Jo Daviess, Knox, Lee and 7 more | 57 min |
| Apr 25, 6:01 PM CDT | Mesoscale Discussion | SPC | Bureau, Carroll, Henry, Jo Daviess, Knox, Lee and 7 more | 59 min |
| Apr 25, 12:07 AM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Cass, Clarke, Dallas, Decatur and 15 more | 7 hr |
| Apr 25, 12:55 AM CDT | Mesoscale Discussion | SPC | Page | 35 min |
| Apr 25, 1:13 AM CDT | Tornado Watch | SPC | Fremont, Montgomery, Page | 5 hr |
| Apr 25, 2:24 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Cass, Clarke, Dallas, Decatur and 14 more | 66 min |
| Apr 25, 3:18 AM CDT | Mesoscale Discussion | SPC | Fremont, Montgomery, Page | 57 min |
| Apr 25, 6:38 AM CDT | Mesoscale Discussion | SPC | Barton, Bates, Benton, Cass, Cedar, Clay and 16 more | 67 min |
| Apr 25, 2:15 PM CDT | Mesoscale Discussion | SPC | Barry, Camden, Christian, Dallas, Dent, Douglas and 13 more | 90 min |
| Apr 25, 6:40 PM CDT | Mesoscale Discussion | SPC | Butler, Carter, Oregon, Reynolds, Ripley, Shannon and 1 more | 65 min |
Nearby
Mesoscale Discussions in Iowa, 2008Mesoscale Discussions in Missouri, 2008Mesoscale Discussions in Illinois, 2008Every mesoscale discussion in 2008
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.