Alert archive / Missouri / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 709

July 9, 20034 states

The Storm Prediction Center issued this severe thunderstorm watch at Jul 9, 2003, 9:50 PM CDT for 4 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Jul 9, 2003, 9:50 PM CDT (02:50 UTC)
Expired: Jul 10, 2003, 4:00 AM CDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 87 counties

Calhoun County, IL, Christian County, IL, Greene County, IL, Jersey County, IL, Macoupin County, IL, Montgomery County, IL, Morgan County, IL, Moultrie County, IL, Pike County, IL, Sangamon County, IL, Scott County, IL, Allen County, KS, Anderson County, KS, Bourbon County, KS, Chautauqua County, KS, Cherokee County, KS, Cowley County, KS, Crawford County, KS, Elk County, KS, Labette County, KS, Linn County, KS, Miami County, KS, Montgomery County, KS, Neosho County, KS, Wilson County, KS, Woodson County, KS, Audrain County, MO, Barry County, MO, Barton County, MO, Bates County, MO, Benton County, MO, Boone County, MO, Callaway County, MO, Camden County, MO, Cass County, MO, Cedar County, MO, Chariton County, MO, Christian County, MO, Cole County, MO, Cooper County, MO, Dade County, MO, Dallas County, MO, Franklin County, MO, Gasconade County, MO, Greene County, MO, Henry County, MO, Hickory County, MO, Howard County, MO, Jasper County, MO, Johnson County, MO, Laclede County, MO, Lafayette County, MO, Lawrence County, MO, Lincoln County, MO, Macon County, MO, Maries County, MO, Marion County, MO, McDonald County, MO, Miller County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Morgan County, MO, Newton County, MO, Osage County, MO, Pettis County, MO, Phelps County, MO, Pike County, MO, Polk County, MO, Pulaski County, MO, Ralls County, MO, Randolph County, MO, Saint Charles County, MO, Saint Louis County, MO, Saline County, MO, Shelby County, MO, St. Clair County, MO, Stone County, MO, Vernon County, MO, Warren County, MO, Webster County, MO, Craig County, OK, Kay County, OK, Nowata County, OK, Osage County, OK, Ottawa County, OK, Washington County, OK

The radar

The Springfield radar (KSGF), 100 km from the middle of the area, began a volume at 02:50 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

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

Issued	Product	Office	Counties	Lasted
Jul 9, 9:55 PM CDT	Severe Thunderstorm Warning	LSX	Brown, Pike	65 min
Jul 9, 10:02 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Nowata, Washington	58 min
Jul 9, 10:07 PM CDT	Severe Thunderstorm Warning	ICT	Montgomery	53 min
Jul 9, 10:09 PM CDT	Severe Thunderstorm Warning	ICT	Labette	66 min
Jul 9, 10:10 PM CDT	Severe Thunderstorm Warning	EAX	Bates	50 min
Jul 9, 10:14 PM CDT	Severe Thunderstorm Warning	LSX	Pike, Ralls	61 min
Jul 9, 10:16 PM CDT	Severe Thunderstorm Warning	LSX	Monroe	59 min
Jul 9, 10:24 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	66 min
Jul 9, 10:27 PM CDT	Severe Thunderstorm Warning	SGF	St. Clair	63 min
Jul 9, 10:47 PM CDT	Severe Thunderstorm Warning	SGF	Benton	58 min
Jul 9, 10:49 PM CDT	Severe Thunderstorm Warning	TSA	Ottawa	56 min
Jul 9, 10:55 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Nowata	50 min
Jul 9, 11:01 PM CDT	Severe Thunderstorm Warning	TSA	Washington	44 min
Jul 9, 11:07 PM CDT	Severe Thunderstorm Warning	SGF	Cedar	53 min
Jul 9, 11:08 PM CDT	Severe Thunderstorm Warning	SGF	Morgan	67 min
Jul 9, 11:15 PM CDT	Severe Thunderstorm Warning	SGF	Hickory	60 min
Jul 9, 11:31 PM CDT	Severe Thunderstorm Warning	TSA	Osage	59 min
Jul 9, 11:32 PM CDT	Severe Thunderstorm Warning	SGF	Polk	58 min
Jul 9, 11:56 PM CDT	Severe Thunderstorm Warning	SGF	Dallas	64 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 00:00Z, 2.8 hours before the alert went out and 110 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: 1823 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 1357 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 79 m²/s²
0-3 km storm-relative helicity: 204 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.4

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 9, 8:04 PM CDT	Mesoscale Discussion	SPC	Adams, Bond, Brown, Calhoun, Cass, Champaign and 50 more	56 min
Jul 9, 8:20 PM CDT	Severe Thunderstorm Watch	SPC	Adams, Brown, Cass, Champaign, Christian, Clark and 43 more	6 hr
Jul 9, 10:49 PM CDT	Mesoscale Discussion	SPC	Adams, Bond, Brown, Calhoun, Cass, Christian and 30 more	56 min
Jul 9, 11:39 PM CDT	Mesoscale Discussion	SPC	Calhoun, Jersey	66 min
Jul 9, 8:56 PM CDT	Mesoscale Discussion	SPC	Bourbon, Cherokee, Crawford, Labette, Neosho	94 min
Jul 9, 8:50 PM CDT	Severe Thunderstorm Watch	SPC	Alfalfa, Blaine, Caddo, Canadian, Cherokee, Cleveland and 38 more	5 hr
Jul 9, 11:10 PM CDT	Severe Thunderstorm Watch	SPC	Beckham, Greer, Harmon, Jackson, Roger Mills	3 hr
Jul 9, 11:22 PM CDT	Mesoscale Discussion	SPC	Adair, Caddo, Canadian, Cherokee, Cleveland, Creek and 26 more	53 min

Nearby

Severe Thunderstorm Watches in Missouri, 2003 Severe Thunderstorm Watches in Kansas, 2003 Severe Thunderstorm Watches in Illinois, 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.