Alert archive / Iowa / Mesoscale Discussions in 2005

Mesoscale Discussion 1208

June 6, 20054 states

The Storm Prediction Center issued this mesoscale discussion at Jun 6, 2005, 5:04 PM CDT for 4 states. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued
Jun 6, 2005, 5:04 PM CDT (22:04 UTC)
Expired
Jun 6, 2005, 6:30 PM CDT
In force
86 min
Issued by
the Storm Prediction Center
All 39 counties

Allamakee County, IA, Benton County, IA, Black Hawk County, IA, Bremer County, IA, Buchanan County, IA, Butler County, IA, Cerro Gordo County, IA, Chickasaw County, IA, Clayton County, IA, Clinton County, IA, Delaware County, IA, Dubuque County, IA, Fayette County, IA, Floyd County, IA, Franklin County, IA, Grundy County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Howard County, IA, Jackson County, IA, Jones County, IA, Kossuth County, IA, Linn County, IA, Marshall County, IA, Mitchell County, IA, Tama County, IA, Winnebago County, IA, Winneshiek County, IA, Worth County, IA, Wright County, IA, Carroll County, IL, Jo Daviess County, IL, Fillmore County, MN, Freeborn County, MN, Mower County, MN, Crawford County, WI, Grant County, WI, Lafayette County, WI

The radar

The La Crosse radar (KARX), 146 km from the middle of the area, began a volume at 22:07 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 12:00Z, 10.1 hours before the alert went out and 221 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, Davenport, at 12:00Z on 2005-06-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 261 joules per kilogram.LCLLFCEL10008507005003002001001 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, Davenport, at 12:00Z on 2005-06-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 167 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
261 J/kg
Mixed-layer CIN
-86 J/kg
Mixed-layer LCL
1505 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
167 m²/s²
0-3 km storm-relative helicity
173 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

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 6, 1:34 PM CDTMesoscale DiscussionSPCAlexander, Clay, Crawford, Edwards, Effingham, Franklin and 22 more2 hr
Jun 5, 7:05 PM CDTMesoscale DiscussionSPCBrown, Calumet, Door, Florence, Fond du Lac, Forest and 22 more85 min
Jun 5, 7:55 PM CDTTornado WatchSPCDoor4 hr
Jun 5, 9:20 PM CDTMesoscale DiscussionSPCDoor85 min

Nearby

Mesoscale Discussions in Iowa, 2005Mesoscale Discussions in Minnesota, 2005Mesoscale Discussions in Wisconsin, 2005Every mesoscale discussion in 2005

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.