Alert archive / Missouri / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 192

April 30, 20038 counties in Kansas; 31 counties in Missouri

The Storm Prediction Center issued this severe thunderstorm watch at Apr 30, 2003, 9:30 PM CDT for 8 counties in Kansas; 31 counties in Missouri. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Apr 30, 2003, 9:30 PM CDT (02:30 UTC)
Expired: May 1, 2003, 3:00 AM CDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 39 counties

Bourbon County, KS, Cherokee County, KS, Crawford County, KS, Johnson County, KS, Leavenworth County, KS, Linn County, KS, Miami County, KS, Wyandotte County, KS, Barton County, MO, Bates County, MO, Benton County, MO, Camden County, MO, Carroll County, MO, Cass County, MO, Cedar County, MO, Chariton County, MO, Clay County, MO, Cooper County, MO, Dade County, MO, Dallas County, MO, Henry County, MO, Hickory County, MO, Howard County, MO, Jackson County, MO, Jasper County, MO, Johnson County, MO, Laclede County, MO, Lafayette County, MO, Macon County, MO, Moniteau County, MO, Morgan County, MO, Pettis County, MO, Platte County, MO, Polk County, MO, Randolph County, MO, Ray County, MO, Saline County, MO, St. Clair County, MO, Vernon County, MO

The radar

The Pleasant Hill radar (KEAX), 30 km from the middle of the area, began a volume at 02:32 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

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

Issued	Product	Office	Counties	Lasted
Apr 30, 9:49 PM CDT	Severe Thunderstorm Warning	EAX	Linn	56 min
Apr 30, 10:41 PM CDT	Severe Thunderstorm Warning	EAX	Bates	64 min
Apr 30, 10:45 PM CDT	Severe Thunderstorm Warning	EAX	Linn	45 min
Apr 30, 10:53 PM CDT	Severe Thunderstorm Warning	EAX	Ray	52 min
Apr 30, 11:40 PM CDT	Severe Thunderstorm Warning	SGF	Bourbon	65 min
Apr 30, 11:46 PM CDT	Severe Thunderstorm Warning	SGF	St. Clair	44 min
Apr 30, 11:49 PM CDT	Severe Thunderstorm Warning	SGF	Vernon	56 min
May 1, 12:16 AM CDT	Flash Flood Warning	SGF	Bourbon	3 hr
May 1, 1:16 AM CDT	Severe Thunderstorm Warning	SGF	Bourbon, Crawford	44 min
May 1, 1:19 AM CDT	Flash Flood Warning	SGF	Vernon	6 hr

Discussions around it

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

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 2.5 hours before the alert went out and 145 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: 3988 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 1381 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 122 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 10.2

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.

Issued	Product	Office	Counties	Lasted
Apr 30, 7:30 PM CDT	Severe Thunderstorm Watch	SPC	Allen, Anderson, Atchison, Butler, Chase, Chautauqua and 23 more	6 hr
Apr 30, 7:31 PM CDT	Mesoscale Discussion	SPC	Doniphan, Johnson, Leavenworth, Wyandotte	119 min
Apr 30, 9:22 PM CDT	Mesoscale Discussion	SPC	Bourbon, Crawford, Linn, Miami	83 min
Apr 30, 9:52 PM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Atchison, Butler, Chase, Chautauqua and 23 more	83 min
Apr 30, 10:31 PM CDT	Mesoscale Discussion	SPC	Doniphan, Johnson, Leavenworth, Wyandotte	89 min
Apr 30, 11:47 PM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Butler, Chase, Chautauqua, Coffey and 13 more	118 min
May 1, 12:00 AM CDT	Mesoscale Discussion	SPC	Bourbon, Cherokee, Crawford, Johnson, Leavenworth, Linn and 2 more	90 min
May 1, 12:10 AM CDT	Severe Thunderstorm Watch	SPC	Allen, Anderson, Bourbon, Butler, Chase, Chautauqua and 22 more	5 hr
May 1, 2:27 AM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Bourbon, Chautauqua, Cherokee, Coffey and 10 more	2 hr
May 1, 12:58 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Rawlins, Sherman, Wallace	2 hr
Apr 30, 10:55 PM CDT	Severe Thunderstorm Watch	SPC	Audrain, Boone, Knox, Lewis, Marion, Monroe and 4 more	5 hr
May 1, 1:19 AM CDT	Mesoscale Discussion	SPC	Audrain, Boone, Marion, Monroe, Pike, Ralls and 1 more	86 min
May 1, 7:51 AM CDT	Mesoscale Discussion	SPC	Butler, Cape Girardeau, Carter, Mississippi, New Madrid, Oregon and 4 more	114 min
May 1, 9:35 AM CDT	Severe Thunderstorm Watch	SPC	Bollinger, Butler, Cape Girardeau, Carter, Dunklin, Mississippi and 6 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.