Alert archive / Kansas / Mesoscale Discussions in 2003

Mesoscale Discussion 625

April 29, 200325 counties in Kansas; 4 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Apr 29, 2003, 5:52 PM CDT for 25 counties in Kansas; 4 counties in Nebraska. It was in force for 53 min.

The area

The outline as issued.

The facts

Issued: Apr 29, 2003, 5:52 PM CDT (22:52 UTC)
Expired: Apr 29, 2003, 6:45 PM CDT
In force: 53 min
Issued by: the Storm Prediction Center

All 29 counties

Clay County, KS, Cloud County, KS, Decatur County, KS, Dickinson County, KS, Ellis County, KS, Ellsworth County, KS, Geary County, KS, Gove County, KS, Graham County, KS, Jewell County, KS, Lincoln County, KS, Mitchell County, KS, Norton County, KS, Osborne County, KS, Ottawa County, KS, Phillips County, KS, Republic County, KS, Riley County, KS, Rooks County, KS, Russell County, KS, Saline County, KS, Sheridan County, KS, Smith County, KS, Trego County, KS, Washington County, KS, Franklin County, NE, Furnas County, NE, Harlan County, NE, Red Willow County, NE

The radar

The Grand Island radar (KUEX), 126 km from the middle of the area, began a volume at 22:51 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

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.9 hours before the alert went out and 231 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1413 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 204 m²/s²
0-3 km storm-relative helicity: 197 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
Apr 28, 7:10 PM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Bourbon, Butler, Chase, Chautauqua and 12 more	2 hr
Apr 28, 11:50 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Rawlins	2 hr
Apr 29, 2:15 AM CDT	Mesoscale Discussion	SPC	Decatur, Jewell, Norton, Phillips, Rawlins, Republic and 2 more	3 hr
Apr 29, 2:19 PM CDT	Mesoscale Discussion	SPC	Cloud, Ellis, Ellsworth, Graham, Jewell, Lincoln and 11 more	116 min
Apr 29, 3:40 PM CDT	Tornado Watch	SPC	Clay, Cloud, Decatur, Dickinson, Ellis, Ellsworth and 19 more	5 hr
Apr 29, 4:10 PM CDT	Severe Thunderstorm Watch	SPC	Cheyenne, Logan, Rawlins, Scott, Sherman, Thomas and 1 more	6 hr
Apr 29, 6:16 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Logan, Rawlins, Scott, Sherman, Thomas and 2 more	119 min
Apr 29, 3:47 PM CDT	Mesoscale Discussion	SPC	Kimball	118 min

Nearby

Mesoscale Discussions in Kansas, 2003 Mesoscale Discussions in Nebraska, 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.