Alert archive / Kansas / Mesoscale Discussions in 2003

Mesoscale Discussion 1951

July 21, 20034 states

The Storm Prediction Center issued this mesoscale discussion at Jul 21, 2003, 11:39 PM CDT for 4 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jul 21, 2003, 11:39 PM CDT (04:39 UTC)
Expired: Jul 22, 2003, 1:45 AM CDT
In force: 2 hr
Issued by: the Storm Prediction Center

All 33 counties

Benton County, AR, Allen County, KS, Anderson County, KS, Bourbon County, KS, Butler County, KS, Chautauqua County, KS, Cherokee County, KS, Coffey County, KS, Cowley County, KS, Crawford County, KS, Elk County, KS, Greenwood County, KS, Harvey County, KS, Labette County, KS, Montgomery County, KS, Neosho County, KS, Sedgwick County, KS, Wilson County, KS, Woodson County, KS, Barry County, MO, Barton County, MO, Jasper County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Craig County, OK, Delaware County, OK, Mayes County, OK, Nowata County, OK, Osage County, OK, Ottawa County, OK, Rogers County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 132 km from the middle of the area, began a volume at 04:38 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.

Severe Thunderstorm Watch 795Jul 22, 1:20 AM CDT

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 4.7 hours before the alert went out and 185 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2434 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: -26 m²/s²
0-3 km storm-relative helicity: 204 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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
Jul 21, 7:06 PM CDT	Mesoscale Discussion	SPC	Cleburne, Craighead, Faulkner, Greene, Independence, Izard and 8 more	84 min
Jul 22, 1:20 AM CDT	Severe Thunderstorm Watch	SPC	Baxter, Benton, Boone, Carroll, Cleburne, Crawford and 10 more	7 hr
Jul 22, 2:49 AM CDT	Mesoscale Discussion	SPC	Arkansas, Clark, Cleburne, Conway, Crawford, Crittenden and 31 more	116 min
Jul 22, 3:45 AM CDT	Severe Thunderstorm Watch	SPC	Arkansas, Clark, Cleburne, Conway, Crawford, Crittenden and 30 more	5 hr
Jul 22, 4:47 AM CDT	Mesoscale Discussion	SPC	Cross, Lee, Lonoke, Monroe, Phillips, Prairie and 3 more	118 min
Jul 21, 7:53 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Decatur, Graham, Norton, Rawlins, Sheridan and 2 more	97 min
Jul 21, 8:21 PM CDT	Mesoscale Discussion	SPC	Barton, Ellis, Ellsworth, Graham, Lincoln, Mitchell and 10 more	54 min

Nearby

Mesoscale Discussions in Kansas, 2003 Mesoscale Discussions in Oklahoma, 2003 Mesoscale Discussions in Missouri, 2003 Every mesoscale discussion 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.