Alert archive / Missouri / Mesoscale Discussions in 2004

Mesoscale Discussion 2105

August 25, 20048 counties in Illinois; 10 counties in Kansas; 53 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Aug 25, 2004, 11:59 AM CDT for 8 counties in Illinois; 10 counties in Kansas; 53 counties in Missouri. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued
Aug 25, 2004, 11:59 AM CDT (16:59 UTC)
Expired
Aug 25, 2004, 1:30 PM CDT
In force
91 min
Issued by
the Storm Prediction Center
All 71 counties

Adams County, IL, Brown County, IL, Calhoun County, IL, Greene County, IL, Hancock County, IL, Pike County, IL, Schuyler County, IL, Scott County, IL, Atchison County, KS, Brown County, KS, Doniphan County, KS, Douglas County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Leavenworth County, KS, Miami County, KS, Wyandotte County, KS, Adair County, MO, Andrew County, MO, Audrain County, MO, Boone County, MO, Buchanan County, MO, Caldwell County, MO, Callaway County, MO, Carroll County, MO, Cass County, MO, Chariton County, MO, Clark County, MO, Clay County, MO, Clinton County, MO, Cole County, MO, Cooper County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Henry County, MO, Holt County, MO, Howard County, MO, Jackson County, MO, Johnson County, MO, Knox County, MO, Lafayette County, MO, Lewis County, MO, Lincoln County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Marion County, MO, Mercer County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Morgan County, MO, Osage County, MO, Pettis County, MO, Pike County, MO, Platte County, MO, Putnam County, MO, Ralls County, MO, Randolph County, MO, Ray County, MO, Saint Charles County, MO, Saline County, MO, Schuyler County, MO, Scotland County, MO, Shelby County, MO, Sullivan County, MO, Warren County, MO

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 5.0 hours before the alert went out and 252 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, Topeka, KS at 12:00Z on 2004-08-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1549 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, Topeka, KS at 12:00Z on 2004-08-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 83 square meters per square second.19395878Sfc1 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
1549 J/kg
Mixed-layer CIN
-196 J/kg
Mixed-layer LCL
1477 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
83 m²/s²
0-3 km storm-relative helicity
112 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

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
Aug 25, 9:24 AM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Cass, DeWitt, Fulton and 22 more2 hr
Aug 25, 12:35 PM CDTTornado WatchSPCAdams, Brown, Hancock, Henderson, Mercer, Pike6 hr
Aug 25, 1:22 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Cass, Champaign, DeKalb and 42 more113 min
Aug 25, 2:20 PM CDTTornado WatchSPCBond, Brown, Calhoun, Cass, Champaign, Christian and 34 more6 hr
Aug 25, 3:15 PM CDTSevere Thunderstorm WatchSPCMonroe, Saint Clair6 hr
Aug 25, 5:14 PM CDTMesoscale DiscussionSPCBond, Brown, Calhoun, Cass, Champaign, Christian and 34 more91 min
Aug 24, 8:20 PM CDTSevere Thunderstorm WatchSPCAtchison, Brown, Clay, Dickinson, Doniphan, Douglas and 14 more7 hr
Aug 24, 11:47 PM CDTMesoscale DiscussionSPCAtchison, Brown, Clay, Doniphan, Douglas, Geary and 12 more118 min
Aug 25, 8:50 AM CDTSevere Thunderstorm WatchSPCBrown, Clay, Cloud, Doniphan, Marshall, Nemaha and 4 more5 hr
Aug 25, 4:50 PM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Butler, Chase, Coffey and 21 more85 min
Aug 25, 5:15 PM CDTSevere Thunderstorm WatchSPCAnderson, Coffey, Douglas, Franklin, Jackson, Jefferson and 10 more5 hr
Aug 25, 2:14 AM CDTMesoscale DiscussionSPCAdair, Andrew, Buchanan, Caldwell, Chariton, Clinton and 14 more31 min

Nearby

Mesoscale Discussions in Missouri, 2004Mesoscale Discussions in Kansas, 2004Mesoscale Discussions in Illinois, 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.