Alert archive / Kansas / Mesoscale Discussions in 2011

Mesoscale Discussion 1410

June 26, 20116 counties in Kansas

The Storm Prediction Center issued this mesoscale discussion at Jun 26, 2011, 9:25 PM CDT for 6 counties in Kansas. It was in force for 65 min.

The area

The outline as issued.

The facts

Issued: Jun 26, 2011, 9:25 PM CDT (02:25 UTC)
Expired: Jun 26, 2011, 10:30 PM CDT
In force: 65 min
Issued by: the Storm Prediction Center

Counties Atchison County, KS, Brown County, KS, Jackson County, KS, Marshall County, KS, Nemaha County, KS, Pottawatomie County, KS

The radar

The Topeka radar (KTWX), 73 km from the middle of the area, began a volume at 02:25 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, 2.4 hours before the alert went out and 76 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: 3777 J/kg
Mixed-layer CIN: -96 J/kg
Mixed-layer LCL: 1305 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 104 m²/s²
0-3 km storm-relative helicity: 307 m²/s²
Significant tornado parameter: 2.0
Supercell composite: 17.0

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
Jun 27, 12:58 AM CDT	Mesoscale Discussion	SPC	Atchison, Doniphan, Douglas, Franklin, Jefferson, Johnson and 4 more	92 min
Jun 27, 1:32 AM CDT	Severe Thunderstorm Watch	SPC	Anderson, Atchison, Brown, Clay, Cloud, Coffey and 24 more	7 hr
Jun 27, 5:38 AM CDT	Mesoscale Discussion	SPC	Anderson, Atchison, Brown, Chase, Clay, Coffey and 22 more	97 min

Nearby

Mesoscale Discussions in Kansas, 2011 Every mesoscale discussion in 2011

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.