Alert archive / Iowa / Mesoscale Discussions in 2008

Mesoscale Discussion 1333

June 12, 20085 counties in Iowa; Mercer County, Putnam County, Missouri

The Storm Prediction Center issued this mesoscale discussion at Jun 12, 2008, 3:56 AM CDT for 5 counties in Iowa; Mercer County, Putnam County, Missouri. It was in force for 94 min.

The area

The outline as issued.

The facts

Issued: Jun 12, 2008, 3:56 AM CDT (08:56 UTC)
Expired: Jun 12, 2008, 5:30 AM CDT
In force: 94 min
Issued by: the Storm Prediction Center

Counties Appanoose County, IA, Lucas County, IA, Marion County, IA, Monroe County, IA, Wayne County, IA, Mercer County, MO, Putnam County, MO

The radar

The Des Moines radar (KDMX), 117 km from the middle of the area, began a volume at 08:56 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

Davenport, (KDVN), launched 00:00Z, 8.9 hours before the alert went out and 255 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 2 J/kg
Mixed-layer CIN: -479 J/kg
Mixed-layer LCL: 1748 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 254 m²/s²
0-3 km storm-relative helicity: 423 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 11, 8:05 PM CDT	Mesoscale Discussion	SPC	Boone, Bremer, Butler, Cerro Gordo, Chickasaw, Clarke and 24 more	115 min
Jun 11, 8:39 PM CDT	Tornado Watch	SPC	Adair, Adams, Appanoose, Black Hawk, Boone, Bremer and 39 more	5 hr
Jun 11, 8:57 PM CDT	Mesoscale Discussion	SPC	Audubon, Carroll, Cass, Crawford, Fremont, Harrison and 6 more	93 min
Jun 11, 9:46 PM CDT	Tornado Watch	SPC	Fremont, Mills, Montgomery, Page	5 hr
Jun 11, 9:58 PM CDT	Mesoscale Discussion	SPC	Adair, Adams, Appanoose, Black Hawk, Boone, Bremer and 36 more	92 min
Jun 11, 11:41 PM CDT	Mesoscale Discussion	SPC	Adair, Adams, Allamakee, Appanoose, Benton, Black Hawk and 43 more	2 hr
Jun 12, 12:37 PM CDT	Mesoscale Discussion	SPC	Appanoose, Benton, Cedar, Clayton, Clinton, Davis and 18 more	113 min
Jun 12, 1:04 PM CDT	Tornado Watch	SPC	Cedar, Clinton, Delaware, Des Moines, Dubuque, Henry and 13 more	7 hr
Jun 12, 3:06 PM CDT	Tornado Watch	SPC	Appanoose, Davis, Mahaska, Monroe, Wapello, Wayne	7 hr
Jun 12, 3:45 PM CDT	Mesoscale Discussion	SPC	Cedar, Clinton, Des Moines, Jackson, Jones, Louisa and 2 more	90 min
Jun 12, 3:52 PM CDT	Mesoscale Discussion	SPC	Allamakee, Appanoose, Benton, Buchanan, Cedar, Clarke and 31 more	113 min
Jun 12, 6:49 PM CDT	Mesoscale Discussion	SPC	Cedar, Clinton, Des Moines, Dubuque, Henry, Jackson and 5 more	86 min
Jun 12, 2:26 PM CDT	Mesoscale Discussion	SPC	Buchanan, Caldwell, Clay, Clinton, Daviess, DeKalb and 7 more	2 hr

Nearby

Mesoscale Discussions in Iowa, 2008 Mesoscale Discussions in Missouri, 2008 Every 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.