Alert archive / Kansas / Mesoscale Discussions in 2016

Mesoscale Discussion 1261

July 13, 201618 counties in Kansas

The Storm Prediction Center issued this mesoscale discussion at Jul 13, 2016, 6:40 AM CDT for 18 counties in Kansas. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued: Jul 13, 2016, 6:40 AM CDT (11:40 UTC)
Expired: Jul 13, 2016, 8:15 AM CDT
In force: 95 min
Issued by: the Storm Prediction Center

Counties Chase County, KS, Coffey County, KS, Dickinson County, KS, Douglas County, KS, Ellsworth County, KS, Franklin County, KS, Geary County, KS, Harvey County, KS, Lincoln County, KS, Lyon County, KS, Marion County, KS, McPherson County, KS, Morris County, KS, Osage County, KS, Ottawa County, KS, Rice County, KS, Saline County, KS, Wabaunsee County, KS

The radar

The Topeka radar (KTWX), 96 km from the middle of the area, began a volume at 11:43 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 377Jul 13, 8:05 AM CDT

The nearest sounding before it

Dodge City, (KDDC), launched 00:00Z, 11.7 hours before the alert went out and 252 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: 1850 J/kg
Mixed-layer CIN: -98 J/kg
Mixed-layer LCL: 1690 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: -30 m²/s²
0-3 km storm-relative helicity: 0 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -1.1

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 12, 8:27 PM CDT	Mesoscale Discussion	SPC	Anderson, Butler, Chase, Coffey, Douglas, Franklin and 14 more	63 min
Jul 13, 2:33 AM CDT	Mesoscale Discussion	SPC	Ellis, Gove, Graham, Greeley, Lane, Logan and 7 more	117 min
Jul 13, 3:25 AM CDT	Severe Thunderstorm Watch	SPC	Barton, Cheyenne, Decatur, Dickinson, Ellis, Ellsworth and 28 more	7 hr
Jul 13, 8:07 AM CDT	Severe Thunderstorm Watch	SPC	Allen, Anderson, Atchison, Bourbon, Brown, Chase and 25 more	5 hr
Jul 13, 6:57 PM CDT	Mesoscale Discussion	SPC	Allen, Bourbon, Butler, Chautauqua, Cherokee, Cowley and 9 more	3 hr

Nearby

Mesoscale Discussions in Kansas, 2016 Every mesoscale discussion in 2016

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.