Alert archive / Kansas / Mesoscale Discussions in 2003

Mesoscale Discussion 368

April 4, 20034 states

The Storm Prediction Center issued this mesoscale discussion at Apr 4, 2003, 1:47 AM CST for 4 states. It was in force for 88 min.

The area

The outline as issued.

The facts

Issued
Apr 4, 2003, 1:47 AM CST (07:47 UTC)
Expired
Apr 4, 2003, 3:15 AM CST
In force
88 min
Issued by
the Storm Prediction Center
All 56 counties

Appanoose County, IA, Clarke County, IA, Decatur County, IA, Lucas County, IA, Monroe County, IA, Page County, IA, Ringgold County, IA, Taylor County, IA, Wayne County, IA, Atchison County, KS, Brown County, KS, Clay County, KS, Cloud County, KS, Dickinson County, KS, Doniphan County, KS, Ellsworth County, KS, Geary County, KS, Jackson County, KS, Jewell County, KS, Lincoln County, KS, Marshall County, KS, Mitchell County, KS, Nemaha County, KS, Osborne County, KS, Ottawa County, KS, Pottawatomie County, KS, Republic County, KS, Riley County, KS, Russell County, KS, Saline County, KS, Smith County, KS, Washington County, KS, Andrew County, MO, Atchison County, MO, Buchanan County, MO, Caldwell County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Holt County, MO, Linn County, MO, Livingston County, MO, Mercer County, MO, Nodaway County, MO, Putnam County, MO, Sullivan County, MO, Worth County, MO, Gage County, NE, Jefferson County, NE, Johnson County, NE, Nemaha County, NE, Pawnee County, NE, Richardson County, NE

The radar

The Topeka radar (KTWX), 96 km from the middle of the area, began a volume at 07:47 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

Topeka, KS (KTOP), launched 00:00Z, 7.8 hours before the alert went out and 108 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 00:00Z on 2003-04-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 506 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 00:00Z on 2003-04-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 148 square meters per square second.1939587897Sfc1 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
506 J/kg
Mixed-layer CIN
-79 J/kg
Mixed-layer LCL
1370 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
148 m²/s²
0-3 km storm-relative helicity
151 m²/s²
Significant tornado parameter
0.2
Supercell composite
3.5

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
Apr 3, 8:39 PM CSTMesoscale DiscussionSPCAdams, Appanoose, Clarke, Davis, Decatur, Fremont and 11 more2 hr
Apr 3, 9:20 PM CSTSevere Thunderstorm WatchSPCAppanoose, Decatur, Monroe, Ringgold, Wayne6 hr
Apr 3, 11:44 PM CSTMesoscale DiscussionSPCAppanoose, Clarke, Decatur, Lucas, Monroe, Page and 3 more2 hr
Apr 4, 1:33 PM CSTMesoscale DiscussionSPCAllamakee, Clayton, Fayette6 hr
Apr 4, 7:23 AM CSTMesoscale DiscussionSPCLincoln, Pike, Saint Charles, Saint Louis, City of Saint Louis97 min
Apr 4, 11:10 AM CSTMesoscale DiscussionSPCAudrain, Benton, Boone, Callaway, Camden, Cole and 23 more95 min
Apr 4, 12:05 PM CSTTornado WatchSPCAudrain, Benton, Boone, Callaway, Camden, Carroll and 28 more5 hr
Apr 4, 1:12 PM CSTMesoscale DiscussionSPCAudrain, Boone, Callaway, Camden, Christian, Cole and 38 more93 min
Apr 4, 4:25 PM CSTTornado WatchSPCBollinger, Butler, Cape Girardeau, Carter, Crawford, Dent and 22 more6 hr
Apr 4, 4:43 PM CSTMesoscale DiscussionSPCDunklin, Pemiscot3 hr

Nearby

Mesoscale Discussions in Kansas, 2003Mesoscale Discussions in Missouri, 2003Mesoscale Discussions in Iowa, 2003Every mesoscale discussion in 2003

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.