Alert archive / Missouri / Mesoscale Discussions in 2004

Mesoscale Discussion 922

May 26, 200416 counties in Illinois; 4 counties in Kentucky; 46 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at May 26, 2004, 5:57 PM CDT for 16 counties in Illinois; 4 counties in Kentucky; 46 counties in Missouri. It was in force for 93 min.

The area

The outline as issued.

The facts

Issued: May 26, 2004, 5:57 PM CDT (22:57 UTC)
Expired: May 26, 2004, 7:30 PM CDT
In force: 93 min
Issued by: the Storm Prediction Center

All 66 counties

Alexander County, IL, Franklin County, IL, Hamilton County, IL, Jackson County, IL, Jefferson County, IL, Johnson County, IL, Massac County, IL, Monroe County, IL, Perry County, IL, Pope County, IL, Pulaski County, IL, Randolph County, IL, Saline County, IL, Union County, IL, White County, IL, Williamson County, IL, Ballard County, KY, Carlisle County, KY, Fulton County, KY, Hickman County, KY, Barry County, MO, Benton County, MO, Bollinger County, MO, Butler County, MO, Camden County, MO, Cape Girardeau County, MO, Carter County, MO, Christian County, MO, Crawford County, MO, Dade County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Greene County, MO, Hickory County, MO, Howell County, MO, Iron County, MO, Jefferson County, MO, Laclede County, MO, Lawrence County, MO, Madison County, MO, Maries County, MO, McDonald County, MO, Miller County, MO, Mississippi County, MO, New Madrid County, MO, Oregon County, MO, Ozark County, MO, Perry County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, Reynolds County, MO, Ripley County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Scott County, MO, Shannon County, MO, Stoddard County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Washington County, MO, Wayne County, MO, Webster County, MO, Wright County, MO

The radar

The Springfield radar (KSGF), 137 km from the middle of the area, began a volume at 22:59 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, 11.0 hours before the alert went out and 177 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1235 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 521 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 230 m²/s²
0-3 km storm-relative helicity: 257 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.6

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.

Issued	Product	Office	Counties	Lasted
May 25, 7:28 PM CDT	Mesoscale Discussion	SPC	Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 17 more	92 min
May 26, 8:20 AM CDT	Mesoscale Discussion	SPC	Bond, Calhoun, Christian, Clark, Clay, Clinton and 31 more	85 min
May 26, 8:50 AM CDT	Severe Thunderstorm Watch	SPC	Bond, Clay, Clinton, Crawford, Edwards, Effingham and 25 more	5 hr
May 26, 10:50 AM CDT	Mesoscale Discussion	SPC	Alexander, Bond, Clay, Clinton, Crawford, Edwards and 28 more	85 min
May 26, 1:10 PM CDT	Tornado Watch	SPC	Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 12 more	8 hr
May 26, 3:32 PM CDT	Mesoscale Discussion	SPC	Alexander, Edwards, Franklin, Gallatin, Hamilton, Jackson and 13 more	88 min
May 26, 5:10 PM CDT	Mesoscale Discussion	SPC	Adams, Bond, Brown, Calhoun, Cass, Christian and 29 more	65 min
May 26, 5:35 PM CDT	Severe Thunderstorm Watch	SPC	Adams, Bond, Brown, Calhoun, Cass, Christian and 34 more	5 hr
May 26, 11:25 AM CDT	Severe Thunderstorm Watch	SPC	Adair, Allen, Anderson, Barren, Bath, Boone and 83 more	7 hr
May 26, 12:38 PM CDT	Mesoscale Discussion	SPC	Bell, Floyd, Harlan, Johnson, Knott, Knox and 5 more	97 min
May 26, 1:18 PM CDT	Mesoscale Discussion	SPC	Adair, Allen, Anderson, Barren, Bath, Boone and 83 more	87 min
May 26, 1:50 PM CDT	Severe Thunderstorm Watch	SPC	Bell, Boyd, Breathitt, Clay, Elliott, Floyd and 18 more	7 hr
May 26, 3:25 PM CDT	Severe Thunderstorm Watch	SPC	Adair, Allen, Barren, Bell, Butler, Caldwell and 37 more	6 hr
May 26, 5:27 PM CDT	Mesoscale Discussion	SPC	Adair, Allen, Barren, Bell, Butler, Caldwell and 31 more	93 min

Nearby

Mesoscale Discussions in Missouri, 2004 Mesoscale Discussions in Illinois, 2004 Mesoscale Discussions in Kentucky, 2004 Every 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.