Alert archive / Kansas / Mesoscale Discussions in 2005

Mesoscale Discussion 1271

June 9, 200520 counties in Kansas; Jefferson County, Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jun 9, 2005, 9:41 PM CDT for 20 counties in Kansas; Jefferson County, Nebraska. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jun 9, 2005, 9:41 PM CDT (02:41 UTC)
Expired: Jun 9, 2005, 11:45 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center

All 21 counties

Atchison County, KS, Brown County, KS, Clay County, KS, Cloud County, KS, Dickinson County, KS, Geary County, KS, Jackson County, KS, Jefferson County, KS, Jewell County, KS, Lincoln County, KS, Marshall County, KS, Mitchell County, KS, Nemaha County, KS, Osborne County, KS, Ottawa County, KS, Pottawatomie County, KS, Republic County, KS, Riley County, KS, Saline County, KS, Washington County, KS, Jefferson County, NE

The radar

The Topeka radar (KTWX), 103 km from the middle of the area, began a volume at 02:42 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 nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 2.7 hours before the alert went out and 146 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: 766 J/kg
Mixed-layer CIN: -138 J/kg
Mixed-layer LCL: 1408 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 209 m²/s²
0-3 km storm-relative helicity: 251 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.2

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
Jun 9, 7:42 PM CDT	Mesoscale Discussion	SPC	Brown, Clay, Cloud, Jewell, Lincoln, Marshall and 8 more	93 min
Jun 9, 8:10 PM CDT	Severe Thunderstorm Watch	SPC	Brown, Doniphan, Marshall, Nemaha, Washington	4 hr
Jun 9, 9:27 PM CDT	Mesoscale Discussion	SPC	Barber, Clark, Comanche, Edwards, Ford, Kingman and 4 more	93 min
Jun 9, 10:25 PM CDT	Severe Thunderstorm Watch	SPC	Barber, Clark, Comanche, Harper, Meade, Sumner	6 hr
Jun 10, 11:30 AM CDT	Tornado Watch	SPC	Clark, Comanche, Meade, Morton, Seward, Stevens	7 hr
Jun 10, 2:25 PM CDT	Mesoscale Discussion	SPC	Clark, Comanche, Meade	2 hr
Jun 10, 2:26 PM CDT	Mesoscale Discussion	SPC	Clark, Comanche, Meade	2 hr
Jun 10, 6:07 PM CDT	Mesoscale Discussion	SPC	Chautauqua, Cherokee, Cowley, Crawford, Elk, Labette and 3 more	113 min
Jun 10, 6:50 PM CDT	Severe Thunderstorm Watch	SPC	Allen, Anderson, Bourbon, Butler, Chase, Chautauqua and 18 more	5 hr
Jun 9, 8:34 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Deuel, Kimball	116 min
Jun 9, 8:45 PM CDT	Severe Thunderstorm Watch	SPC	Burt, Colfax, Cuming, Dakota, Dixon, Dodge and 5 more	4 hr

Nearby

Mesoscale Discussions in Kansas, 2005 Mesoscale Discussions in Nebraska, 2005 Every mesoscale discussion in 2005

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.