Alert archive / Kansas / Mesoscale Discussions in 2011

Mesoscale Discussion 1530

July 6, 20116 counties in Colorado; 11 counties in Kansas; Dundy County, Hitchcock County, Red Willow County, Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jul 6, 2011, 9:51 PM MDT for 6 counties in Colorado; 11 counties in Kansas; Dundy County, Hitchcock County, Red Willow County, Nebraska. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued: Jul 6, 2011, 9:51 PM MDT (03:51 UTC)
Expired: Jul 6, 2011, 11:15 PM MDT
In force: 84 min
Issued by: the Storm Prediction Center

Counties Bent County, CO, Cheyenne County, CO, Kiowa County, CO, Kit Carson County, CO, Prowers County, CO, Yuma County, CO, Cheyenne County, KS, Decatur County, KS, Gove County, KS, Greeley County, KS, Logan County, KS, Rawlins County, KS, Sheridan County, KS, Sherman County, KS, Thomas County, KS, Wallace County, KS, Wichita County, KS, Dundy County, NE, Hitchcock County, NE, Red Willow County, NE

The radar

The Goodland radar (KGLD), 22 km from the middle of the area, began a volume at 03:54 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

Denver, CO (KDNR), launched 00:00Z, 3.9 hours before the alert went out and 133 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: 1275 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 1346 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 125 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 3.2

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
Jul 7, 1:17 PM MDT	Mesoscale Discussion	SPC	Baca, Bent, Cheyenne, Crowley, Custer, Douglas and 11 more	58 min
Jul 7, 12:54 PM MDT	Mesoscale Discussion	SPC	Allen, Bourbon, Cherokee, Crawford, Labette, Linn and 4 more	66 min

Nearby

Mesoscale Discussions in Kansas, 2011 Mesoscale Discussions in Colorado, 2011 Mesoscale Discussions in Nebraska, 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.