Alert archive / Kansas / Mesoscale Discussions in 2011

Mesoscale Discussion 1774

July 28, 20114 states

The Storm Prediction Center issued this mesoscale discussion at Jul 28, 2011, 3:05 PM MDT for 4 states. It was in force for 115 min.

The area

The outline as issued.

The facts

Issued
Jul 28, 2011, 3:05 PM MDT (21:05 UTC)
Expired
Jul 28, 2011, 5:00 PM MDT
In force
115 min
Issued by
the Storm Prediction Center
All 67 counties

Baca County, CO, Bent County, CO, Cheyenne County, CO, Kiowa County, CO, Kit Carson County, CO, Prowers County, CO, Yuma County, CO, Barton County, KS, Cheyenne County, KS, Clark County, KS, Decatur County, KS, Edwards County, KS, Ellsworth County, KS, Finney County, KS, Ford County, KS, Gove County, KS, Graham County, KS, Grant County, KS, Gray County, KS, Greeley County, KS, Hamilton County, KS, Haskell County, KS, Hodgeman County, KS, Kearny County, KS, Kiowa County, KS, Logan County, KS, McPherson County, KS, Meade County, KS, Morton County, KS, Norton County, KS, Pawnee County, KS, Phillips County, KS, Rawlins County, KS, Reno County, KS, Rice County, KS, Rooks County, KS, Rush County, KS, Seward County, KS, Sheridan County, KS, Sherman County, KS, Smith County, KS, Stafford County, KS, Stanton County, KS, Stevens County, KS, Thomas County, KS, Wallace County, KS, Buffalo County, NE, Chase County, NE, Dawson County, NE, Dundy County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Gosper County, NE, Harlan County, NE, Hayes County, NE, Hitchcock County, NE, Kearney County, NE, Keith County, NE, Lincoln County, NE, Nuckolls County, NE, Perkins County, NE, Phelps County, NE, Red Willow County, NE, Webster County, NE, Beaver County, OK, Texas County, OK

The radar

The Dodge City radar (KDDC), 117 km from the middle of the area, began a volume at 21:08 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, 9.1 hours before the alert went out and 117 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-pSkew-T log-p diagram, Dodge City, at 12:00Z on 2011-07-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 798 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Dodge City, at 12:00Z on 2011-07-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 153 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
798 J/kg
Mixed-layer CIN
-229 J/kg
Mixed-layer LCL
1660 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
153 m²/s²
0-3 km storm-relative helicity
170 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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.

IssuedProductOfficeCountiesLasted
Jul 28, 1:47 PM MDTMesoscale DiscussionSPCBurt, Cuming, Dakota, Dodge, Stanton, Thurston118 min

Nearby

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