Alert archive / Iowa / Mesoscale Discussions in 2004

Mesoscale Discussion 1191

June 11, 200425 counties in Iowa; 18 counties in Minnesota

The Storm Prediction Center issued this mesoscale discussion at Jun 11, 2004, 3:03 PM CDT for 25 counties in Iowa; 18 counties in Minnesota. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued
Jun 11, 2004, 3:03 PM CDT (20:03 UTC)
Expired
Jun 11, 2004, 4:30 PM CDT
In force
87 min
Issued by
the Storm Prediction Center
All 43 counties

Black Hawk County, IA, Bremer County, IA, Butler County, IA, Calhoun County, IA, Cerro Gordo County, IA, Chickasaw County, IA, Clay County, IA, Dickinson County, IA, Emmet County, IA, Floyd County, IA, Franklin County, IA, Grundy County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Howard County, IA, Humboldt County, IA, Kossuth County, IA, Mitchell County, IA, Palo Alto County, IA, Pocahontas County, IA, Webster County, IA, Winnebago County, IA, Worth County, IA, Wright County, IA, Blue Earth County, MN, Brown County, MN, Cottonwood County, MN, Dodge County, MN, Faribault County, MN, Freeborn County, MN, Goodhue County, MN, Jackson County, MN, Le Sueur County, MN, Lyon County, MN, Martin County, MN, Mower County, MN, Nicollet County, MN, Redwood County, MN, Rice County, MN, Steele County, MN, Waseca County, MN, Watonwan County, MN

The radar

The Des Moines radar (KDMX), 162 km from the middle of the area, began a volume at 20:03 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

Minneapolis, MN (KMPX), launched 12:00Z, 8.1 hours before the alert went out and 187 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-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2004-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2004-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -29 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
572 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
-29 m²/s²
0-3 km storm-relative helicity
16 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

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.

IssuedProductOfficeCountiesLasted
Jun 10, 7:58 PM CDTMesoscale DiscussionSPCClinton, Dubuque, Jackson, Scott92 min
Jun 11, 1:28 AM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Buena Vista, Calhoun and 20 more62 min
Jun 11, 10:10 AM CDTMesoscale DiscussionSPCAllamakee, Bremer, Butler, Cerro Gordo, Chickasaw, Clayton and 14 more95 min
Jun 11, 12:55 PM CDTMesoscale DiscussionSPCBremer, Buena Vista, Butler, Calhoun, Cerro Gordo, Cherokee and 23 more3 hr
Jun 11, 1:45 PM CDTTornado WatchSPCBlack Hawk, Bremer, Buena Vista, Butler, Calhoun, Cerro Gordo and 20 more5 hr
Jun 11, 4:55 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Carroll, Cass and 20 more95 min
Jun 11, 5:00 PM CDTTornado WatchSPCAllamakee, Black Hawk, Bremer, Buchanan, Butler, Calhoun and 26 more6 hr
Jun 11, 5:56 PM CDTMesoscale DiscussionSPCJackson94 min
Jun 10, 8:50 PM CDTSevere Thunderstorm WatchSPCLincoln, Pipestone, Rock5 hr
Jun 10, 11:43 PM CDTMesoscale DiscussionSPCLincoln, Pipestone, Rock92 min
Jun 11, 6:25 PM CDTMesoscale DiscussionSPCClay, Kittson, Norman, Polk, Wilkin95 min
Jun 11, 6:40 PM CDTSevere Thunderstorm WatchSPCClay, Norman, Otter Tail, Wilkin4 hr

Nearby

Mesoscale Discussions in Iowa, 2004Mesoscale Discussions in Minnesota, 2004Every mesoscale discussion in 2004

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.