Alert archive / Iowa / Mesoscale Discussions in 2007
Mesoscale Discussion 1497
The Storm Prediction Center issued this mesoscale discussion at Jul 16, 2007, 5:24 PM CDT for 53 counties in Iowa; 5 counties in Minnesota. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 16, 2007, 5:24 PM CDT (22:24 UTC)
- Expired
- Jul 16, 2007, 7:30 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 58 counties
Benton County, IA, Black Hawk County, IA, Boone County, IA, Bremer County, IA, Buchanan County, IA, Butler County, IA, Calhoun County, IA, Cerro Gordo County, IA, Chickasaw County, IA, Clarke County, IA, Dallas County, IA, Delaware County, IA, Emmet County, IA, Fayette County, IA, Floyd County, IA, Franklin County, IA, Greene County, IA, Grundy County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Henry County, IA, Howard County, IA, Humboldt County, IA, Iowa County, IA, Jasper County, IA, Jefferson County, IA, Johnson County, IA, Keokuk County, IA, Kossuth County, IA, Linn County, IA, Louisa County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Mitchell County, IA, Monroe County, IA, Palo Alto County, IA, Pocahontas County, IA, Polk County, IA, Poweshiek County, IA, Story County, IA, Tama County, IA, Van Buren County, IA, Wapello County, IA, Warren County, IA, Washington County, IA, Webster County, IA, Winnebago County, IA, Worth County, IA, Wright County, IA, Faribault County, MN, Freeborn County, MN, Martin County, MN, Mower County, MN, Watonwan County, MN
The radar
The Des Moines radar (KDMX), 102 km from the middle of the area, began a volume at 22:27 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
Minneapolis, MN (KMPX), launched 12:00Z, 10.4 hours before the alert went out and 251 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
- 2 J/kg
- Mixed-layer CIN
- -184 J/kg
- Mixed-layer LCL
- 1130 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 169 m²/s²
- 0-3 km storm-relative helicity
- 231 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 |
|---|---|---|---|---|
| Jul 15, 9:37 PM CDT | Mesoscale Discussion | SPC | Harrison, Mills, Montgomery, Pottawattamie | 83 min |
| Jul 16, 1:36 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Cerro Gordo, Clay, Dickinson, Emmet, Franklin and 13 more | 114 min |
| Jul 16, 2:07 PM CDT | Tornado Watch | SPC | Black Hawk, Bremer, Buena Vista, Butler, Calhoun, Cerro Gordo and 28 more | 8 hr |
| Jul 16, 3:11 PM CDT | Mesoscale Discussion | SPC | Benton, Black Hawk, Bremer, Buchanan, Clayton, Delaware and 12 more | 2 hr |
| Jul 16, 3:38 PM CDT | Tornado Watch | SPC | Appanoose, Benton, Boone, Buchanan, Cedar, Clarke and 39 more | 7 hr |
| Jul 15, 7:42 PM CDT | Mesoscale Discussion | SPC | Becker, Big Stone, Chippewa, Clay, Douglas, Grant and 16 more | 93 min |
| Jul 15, 10:20 PM CDT | Mesoscale Discussion | SPC | Big Stone, Chippewa, Douglas, Grant, Kandiyohi, Lac qui Parle and 9 more | 55 min |
Nearby
Mesoscale Discussions in Iowa, 2007Mesoscale Discussions in Minnesota, 2007Every mesoscale discussion in 2007
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.