Alert archive / Missouri / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 264

May 6, 20037 counties in Kansas; 28 counties in Missouri

The Storm Prediction Center issued this severe thunderstorm watch at May 6, 2003, 7:55 AM CDT for 7 counties in Kansas; 28 counties in Missouri. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: May 6, 2003, 7:55 AM CDT (12:55 UTC)
Expired: May 6, 2003, 1:00 PM CDT
In force: 5 hr
Issued by: the Storm Prediction Center

All 35 counties

Anderson County, KS, Bourbon County, KS, Crawford County, KS, Franklin County, KS, Linn County, KS, Miami County, KS, Osage County, KS, 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, Johnson County, MO, Laclede County, MO, Lawrence County, MO, Morgan County, MO, Newton County, MO, Pettis County, MO, Polk County, MO, Pulaski County, MO, St. Clair County, MO, Texas County, MO, Vernon County, MO, Webster County, MO, Wright County, MO

The radar

The Springfield radar (KSGF), 79 km from the middle of the area, began a volume at 12:58 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.

Warnings issued inside it

13 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
May 6, 8:28 AM CDT	Severe Thunderstorm Warning	SGF	Greene, Webster	62 min
May 6, 8:30 AM CDT	Severe Thunderstorm Warning	SGF	Bourbon	15 min
May 6, 8:34 AM CDT	Severe Thunderstorm Warning	SGF	Vernon	41 min
May 6, 8:48 AM CDT	Tornado Warning	SGF	Vernon	42 min
May 6, 9:18 AM CDT	Severe Thunderstorm Warning	SGF	St. Clair	57 min
May 6, 9:22 AM CDT	Tornado Warning	SGF	St. Clair	68 min
May 6, 9:26 AM CDT	Severe Thunderstorm Warning	SGF	Vernon	49 min
May 6, 10:04 AM CDT	Tornado Warning	SGF	Benton, Hickory	56 min
May 6, 11:06 AM CDT	Severe Thunderstorm Warning	TOP	Osage	39 min
May 6, 11:40 AM CDT	Severe Thunderstorm Warning	TOP	Douglas, Franklin	65 min
May 6, 11:45 AM CDT	Severe Thunderstorm Warning	TOP	Osage	15 min
May 6, 12:12 PM CDT	Severe Thunderstorm Warning	EAX	Johnson, Miami	63 min
May 6, 12:59 PM CDT	Severe Thunderstorm Warning	EAX	Cass, Jackson	76 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 0.9 hours before the alert went out and 120 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: 34 J/kg
Mixed-layer CIN: -216 J/kg
Mixed-layer LCL: 1877 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 86 m²/s²
0-3 km storm-relative helicity: 115 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 6, 6:49 AM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Bourbon, Coffey, Crawford, Douglas and 11 more	3 hr
May 6, 8:50 AM CDT	Severe Thunderstorm Watch	SPC	Anderson, Atchison, Brown, Chase, Clay, Cloud and 28 more	4 hr
May 6, 11:29 AM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Bourbon, Cherokee, Coffey, Crawford and 17 more	2 hr
May 6, 11:40 AM CDT	Tornado Watch	SPC	Allen, Anderson, Bourbon, Chase, Chautauqua, Cherokee and 20 more	7 hr
May 6, 3:42 PM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Bourbon, Cherokee, Crawford, Labette and 4 more	2 hr
May 5, 10:58 PM CDT	Mesoscale Discussion	SPC	Barry, Bollinger, Cape Girardeau, Carter, Christian, Douglas and 14 more	2 hr
May 6, 1:50 AM CDT	Tornado Watch	SPC	Dunklin, Pemiscot	6 hr
May 6, 10:32 AM CDT	Mesoscale Discussion	SPC	McDonald	118 min
May 6, 11:55 AM CDT	Severe Thunderstorm Watch	SPC	Cole, Crawford, Dent, Franklin, Gasconade, Iron and 16 more	4 hr
May 6, 2:15 PM CDT	Tornado Watch	SPC	Boone, Callaway, Camden, Carter, Cole, Cooper and 27 more	5 hr
May 6, 5:08 PM CDT	Mesoscale Discussion	SPC	Franklin, Jefferson, Saint Charles, Saint Louis, Warren, City of Saint Louis	2 hr
May 6, 5:33 PM CDT	Mesoscale Discussion	SPC	Barry, Carter, Christian, Crawford, Dade, Dent and 23 more	117 min
May 6, 5:40 PM CDT	Tornado Watch	SPC	Bollinger, Butler, Cape Girardeau, Iron, Jefferson, Madison and 11 more	6 hr
May 6, 6:35 PM CDT	Tornado Watch	SPC	Barry, Barton, Camden, Carter, Cedar, Christian and 31 more	5 hr

Nearby

Severe Thunderstorm Watches in Missouri, 2003 Severe Thunderstorm Watches in Kansas, 2003 Every severe thunderstorm watch 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.