Alert archive / Kansas / Mesoscale Discussions in 2011

Mesoscale Discussion 2079

August 28, 20119 counties in Kansas

The Storm Prediction Center issued this mesoscale discussion at Aug 28, 2011, 4:56 PM CDT for 9 counties in Kansas. It was in force for 94 min.

The area

The outline as issued.

The facts

Issued: Aug 28, 2011, 4:56 PM CDT (21:56 UTC)
Expired: Aug 28, 2011, 6:30 PM CDT
In force: 94 min
Issued by: the Storm Prediction Center

Counties Finney County, KS, Grant County, KS, Hamilton County, KS, Haskell County, KS, Kearny County, KS, Lane County, KS, Scott County, KS, Stanton County, KS, Wichita County, KS

The radar

The Dodge City radar (KDDC), 121 km from the middle of the area, began a volume at 21:59 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

Dodge City, (KDDC), launched 12:00Z, 9.9 hours before the alert went out and 126 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: 613 J/kg
Mixed-layer CIN: -302 J/kg
Mixed-layer LCL: 2242 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 137 m²/s²
0-3 km storm-relative helicity: 158 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

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
Aug 28, 3:25 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Decatur, Gove, Graham, Greeley, Logan and 6 more	65 min
Aug 28, 3:47 PM CDT	Severe Thunderstorm Watch	SPC	Cheyenne, Gove, Greeley, Logan, Rawlins, Sheridan and 4 more	4 hr

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.