Alert archive / Missouri / Mesoscale Discussions in 2004

Mesoscale Discussion 446

April 23, 20044 states

The Storm Prediction Center issued this mesoscale discussion at Apr 23, 2004, 10:37 AM CDT for 4 states. It was in force for 113 min.

The area

The outline as issued.

The facts

Issued
Apr 23, 2004, 10:37 AM CDT (15:37 UTC)
Expired
Apr 23, 2004, 12:30 PM CDT
In force
113 min
Issued by
the Storm Prediction Center
All 59 counties

Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Fulton County, AR, Izard County, AR, Marion County, AR, Searcy County, AR, Stone County, AR, Allen County, KS, Anderson County, KS, Bourbon County, KS, Chautauqua County, KS, Cherokee County, KS, Coffey County, KS, Crawford County, KS, Elk County, KS, Franklin County, KS, Greenwood County, KS, Labette County, KS, Linn County, KS, Lyon County, KS, Miami County, KS, Montgomery County, KS, Neosho County, KS, Osage County, KS, Wilson County, KS, Woodson County, KS, Barry County, MO, Barton County, MO, Bates County, MO, Benton County, MO, Camden County, MO, Cass County, MO, Cedar County, MO, Christian County, MO, Dade County, MO, Dallas County, MO, Douglas County, MO, Greene County, MO, Henry County, MO, Hickory County, MO, Howell County, MO, Jasper County, MO, Laclede County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Ozark County, MO, Polk County, MO, Pulaski County, MO, St. Clair County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Vernon County, MO, Webster County, MO, Wright County, MO, Ottawa County, OK

The radar

The Springfield radar (KSGF), 76 km from the middle of the area, began a volume at 15:37 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

Springfield, MO (KSGF), launched 12:00Z, 3.6 hours before the alert went out and 70 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, Springfield, MO at 12:00Z on 2004-04-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 47 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, Springfield, MO at 12:00Z on 2004-04-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 133 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
47 J/kg
Mixed-layer CIN
-148 J/kg
Mixed-layer LCL
565 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
133 m²/s²
0-3 km storm-relative helicity
106 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.2

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 22, 7:10 PM CDTMesoscale DiscussionSPCBoone, Franklin, Howard, Johnson, Logan, Madison and 5 more35 min
Apr 22, 7:50 PM CDTTornado WatchSPCBaxter, Benton, Boone, Carroll, Crawford, Franklin and 10 more4 hr
Apr 22, 9:50 PM CDTSevere Thunderstorm WatchSPCBaxter, Benton, Boone, Carroll, Cleburne, Conway and 25 more6 hr
Apr 22, 10:52 PM CDTMesoscale DiscussionSPCConway, Pope, Searcy, Stone, Van Buren53 min
Apr 22, 11:25 PM CDTMesoscale DiscussionSPCClay, Craighead, Crittenden, Cross, Greene, Mississippi and 1 more65 min
Apr 22, 11:40 PM CDTSevere Thunderstorm WatchSPCClay, Craighead, Crittenden, Cross, Greene, Lawrence and 4 more6 hr
Apr 23, 12:54 AM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Cleburne, Conway and 25 more96 min
Apr 23, 3:12 AM CDTMesoscale DiscussionSPCClay, Craighead, Crittenden, Cross, Greene, Lawrence and 5 more93 min
Apr 23, 7:33 AM CDTMesoscale DiscussionSPCCraighead, Crittenden, Cross, Jackson, Lee, Poinsett and 2 more87 min
Apr 23, 2:10 PM CDTSevere Thunderstorm WatchSPCBenton, Crawford, Sebastian, Washington6 hr
Apr 23, 6:01 PM CDTMesoscale DiscussionSPCCrawford, Scott, Sebastian59 min
Apr 23, 10:10 AM CDTMesoscale DiscussionSPCClark, Comanche, Ford, Gray, Meade, Seward3 hr
Apr 23, 12:51 PM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Cherokee, Crawford, Labette and 5 more114 min
Apr 23, 3:05 PM CDTSevere Thunderstorm WatchSPCAllen, Bourbon, Butler, Chautauqua, Cherokee, Cowley and 12 more5 hr
Apr 22, 8:00 PM CDTMesoscale DiscussionSPCLove60 min
Apr 22, 11:47 PM CDTMesoscale DiscussionSPCBeaver, Custer, Dewey, Ellis, Harper, Major and 3 more58 min
Apr 23, 12:15 PM CDTTornado WatchSPCCarter, Cotton, Jefferson, Tillman6 hr
Apr 23, 1:46 PM CDTMesoscale DiscussionSPCAdair, Caddo, Canadian, Carter, Cherokee, Cleveland and 29 more119 min
Apr 23, 3:05 PM CDTMesoscale DiscussionSPCCotton, Garvin, Murray, Pontotoc, Stephens85 min
Apr 23, 4:40 PM CDTMesoscale DiscussionSPCCarter, Jefferson65 min
Apr 23, 5:30 PM CDTSevere Thunderstorm WatchSPCCarter, Cotton, Jefferson, Johnston, Love, Marshall and 3 more7 hr

Nearby

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