Alert archive / Missouri / Mesoscale Discussions in 2005

Mesoscale Discussion 1241

June 8, 200525 counties in Illinois; 10 counties in Iowa; 38 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Jun 8, 2005, 11:46 AM CDT for 25 counties in Illinois; 10 counties in Iowa; 38 counties in Missouri. It was in force for 29 min.

The area

The outline as issued.

The facts

Issued
Jun 8, 2005, 11:46 AM CDT (16:46 UTC)
Expired
Jun 8, 2005, 12:15 PM CDT
In force
29 min
Issued by
the Storm Prediction Center
All 73 counties

Appanoose County, IA, Davis County, IA, Des Moines County, IA, Henry County, IA, Jefferson County, IA, Lee County, IA, Louisa County, IA, Monroe County, IA, Van Buren County, IA, Wapello County, IA, Adams County, IL, Bond County, IL, Brown County, IL, Calhoun County, IL, Cass County, IL, Fulton County, IL, Greene County, IL, Hancock County, IL, Henderson County, IL, Jersey County, IL, Knox County, IL, Macoupin County, IL, Madison County, IL, Mason County, IL, McDonough County, IL, Menard County, IL, Montgomery County, IL, Morgan County, IL, Peoria County, IL, Pike County, IL, Saint Clair County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Warren County, IL, Adair County, MO, Audrain County, MO, Boone County, MO, Callaway County, MO, Carroll County, MO, Chariton County, MO, City of Saint Louis, MO, Clark County, MO, Cole County, MO, Cooper County, MO, Franklin County, MO, Gasconade County, MO, Grundy County, MO, Howard County, MO, Knox County, MO, Lewis County, MO, Lincoln County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Marion County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Osage County, MO, Pettis County, MO, Pike County, MO, Putnam County, MO, Ralls County, MO, Randolph County, MO, Saint Charles County, MO, Saint Louis County, MO, Saline County, MO, Schuyler County, MO, Scotland County, MO, Shelby County, MO, Sullivan County, MO, Warren County, MO

The radar

The St Louis radar (KLSX), 155 km from the middle of the area, began a volume at 16:48 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 12:00Z, 4.8 hours before the alert went out and 228 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 2005-06-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 546 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 2005-06-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 81 square meters per square second.1939Sfc1 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
546 J/kg
Mixed-layer CIN
-138 J/kg
Mixed-layer LCL
1084 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
81 m²/s²
0-3 km storm-relative helicity
61 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.

IssuedProductOfficeCountiesLasted
Jun 8, 9:47 AM CDTMesoscale DiscussionSPCAdams, Hancock28 min
Jun 8, 12:00 PM CDTSevere Thunderstorm WatchSPCAdams, Brown, Cass, Christian, Fulton, Greene and 18 more5 hr
Jun 8, 1:52 PM CDTMesoscale DiscussionSPCAdams, Bond, Brown, Bureau, Calhoun, Cass and 47 more23 min
Jun 8, 2:10 PM CDTSevere Thunderstorm WatchSPCAdams, Bond, Brown, Calhoun, Cass, Champaign and 48 more7 hr
Jun 8, 4:12 PM CDTMesoscale DiscussionSPCBond, Champaign, Christian, Clark, Clinton, Coles and 30 more2 hr
Jun 8, 6:22 PM CDTMesoscale DiscussionSPCBond, Calhoun, Champaign, Christian, Clark, Clay and 40 more83 min
Jun 7, 9:50 PM CDTTornado WatchSPCLyon, Sioux7 hr
Jun 7, 11:50 PM CDTSevere Thunderstorm WatchSPCAdams, Audubon, Cass, Cherokee, Crawford, Fremont and 11 more5 hr
Jun 8, 8:55 AM CDTMesoscale DiscussionSPCAppanoose, Clarke, Davis, Decatur, Lucas, Ringgold and 1 more65 min
Jun 8, 9:55 AM CDTSevere Thunderstorm WatchSPCAppanoose, Clarke, Davis, Decatur, Henry, Jefferson and 5 more7 hr
Jun 8, 5:30 PM CDTTornado WatchSPCAdair, Adams, Audubon, Cass, Fremont, Guthrie and 8 more4 hr
Jun 8, 1:03 PM CDTMesoscale DiscussionSPCAudrain, Barton, Bates, Benton, Boone, Buchanan and 38 more27 min
Jun 8, 1:30 PM CDTTornado WatchSPCAudrain, Bates, Benton, Boone, Callaway, Camden and 30 more8 hr
Jun 8, 4:00 PM CDTMesoscale DiscussionSPCAudrain, Bates, Benton, Boone, Callaway, Camden and 29 more60 min

Nearby

Mesoscale Discussions in Missouri, 2005Mesoscale Discussions in Illinois, 2005Mesoscale Discussions in Iowa, 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.