Alert archive / Iowa / Mesoscale Discussions in 2014
Mesoscale Discussion 1652
The Storm Prediction Center issued this mesoscale discussion at Aug 31, 2014, 9:09 PM CDT for 4 states. It was in force for 96 min.
The area
The outline as issued.
The facts
- Issued
- Aug 31, 2014, 9:09 PM CDT (02:09 UTC)
- Expired
- Aug 31, 2014, 10:45 PM CDT
- In force
- 96 min
- Issued by
- the Storm Prediction Center
All 69 counties
Allamakee County, IA, Appanoose County, IA, Benton County, IA, Black Hawk County, IA, Bremer County, IA, Buchanan County, IA, Butler County, IA, Cedar County, IA, Chickasaw County, IA, Clarke County, IA, Clayton County, IA, Davis County, IA, Decatur County, IA, Delaware County, IA, Dubuque County, IA, Fayette County, IA, Floyd County, IA, Grundy County, IA, Hardin County, IA, Henry County, IA, Howard County, IA, Iowa County, IA, Jasper County, IA, Jefferson County, IA, Johnson County, IA, Jones County, IA, Keokuk County, IA, Linn County, IA, Louisa County, IA, Lucas County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Mitchell County, IA, Monroe County, IA, Muscatine County, IA, Poweshiek County, IA, Ringgold County, IA, Tama County, IA, Van Buren County, IA, Wapello County, IA, Warren County, IA, Washington County, IA, Wayne County, IA, Winneshiek County, IA, Fillmore County, MN, Houston County, MN, Mower County, MN, Olmsted County, MN, Winona County, MN, Adair County, MO, Caldwell County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Livingston County, MO, Mercer County, MO, Putnam County, MO, Schuyler County, MO, Scotland County, MO, Sullivan County, MO, Worth County, MO, Crawford County, WI, Grant County, WI, La Crosse County, WI, Richland County, WI, Vernon County, WI
The radar
The Des Moines radar (KDMX), 83 km from the middle of the area, began a volume at 02:09 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, 2.2 hours before the alert went out and 188 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
- 1371 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 1420 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 69 m²/s²
- 0-3 km storm-relative helicity
- 56 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Aug 31, 7:12 PM CDT | Tornado Watch | SPC | Adair, Adams, Audubon, Boone, Calhoun, Carroll and 25 more | 6 hr |
| Aug 31, 9:45 PM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Appanoose, Benton, Black Hawk, Buchanan, Cedar and 27 more | 4 hr |
| Aug 31, 8:14 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Bates, Buchanan, Caldwell, Carroll, Cass and 23 more | 8 hr |
| Aug 31, 9:39 PM CDT | Mesoscale Discussion | SPC | Buchanan, Caldwell, Carroll, Cass, Chariton, Clay and 11 more | 96 min |
| Sep 1, 3:51 PM CDT | Mesoscale Discussion | SPC | Barry, Barton, Benton, Camden, Cedar, Christian and 34 more | 2 hr |
| Sep 1, 5:57 PM CDT | Severe Thunderstorm Watch | SPC | Audrain, Barry, Barton, Bates, Benton, Boone and 49 more | 8 hr |
Nearby
Mesoscale Discussions in Iowa, 2014Mesoscale Discussions in Missouri, 2014Mesoscale Discussions in Minnesota, 2014Every mesoscale discussion in 2014
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.