Alert archive / Kansas / Mesoscale Discussions in 2011

Mesoscale Discussion 329

April 3, 201125 counties in Kansas; 22 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Apr 3, 2011, 7:26 PM CDT for 25 counties in Kansas; 22 counties in Missouri. It was in force for 64 min.

The area

The outline as issued.

The facts

Issued
Apr 3, 2011, 7:26 PM CDT (00:26 UTC)
Expired
Apr 3, 2011, 8:30 PM CDT
In force
64 min
Issued by
the Storm Prediction Center
All 47 counties

Atchison County, KS, Brown County, KS, Chase County, KS, Dickinson County, KS, Doniphan County, KS, Douglas County, KS, Franklin County, KS, Geary County, KS, Harvey County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Kingman County, KS, Leavenworth County, KS, Lyon County, KS, Marion County, KS, McPherson County, KS, Morris County, KS, Osage County, KS, Pottawatomie County, KS, Reno County, KS, Riley County, KS, Shawnee County, KS, Wabaunsee County, KS, Wyandotte County, KS, Adair County, MO, Andrew County, MO, Buchanan County, MO, Caldwell County, MO, Carroll County, MO, Chariton County, MO, Clay County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Grundy County, MO, Jackson County, MO, Lafayette County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Mercer County, MO, Platte County, MO, Putnam County, MO, Ray County, MO, Saline County, MO, Sullivan County, MO

The radar

The Pleasant Hill radar (KEAX), 89 km from the middle of the area, began a volume at 00:26 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.

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 0.4 hours before the alert went out and 45 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, Topeka, KS at 00:00Z on 2011-04-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1873 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, Topeka, KS at 00:00Z on 2011-04-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 138 square meters per square second.1939587897Sfc1 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
1873 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
2220 m above ground
0-6 km bulk shear
67 kt
0-1 km storm-relative helicity
138 m²/s²
0-3 km storm-relative helicity
140 m²/s²
Significant tornado parameter
0.0
Supercell composite
6.1

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
Apr 3, 8:15 PM CDTMesoscale DiscussionSPCAllen, Anderson, Atchison, Bourbon, Brown, Butler and 34 more60 min
Apr 3, 8:33 PM CDTSevere Thunderstorm WatchSPCAllen, Bourbon, Butler, Chautauqua, Cherokee, Cowley and 8 more5 hr
Apr 3, 11:02 PM CDTMesoscale DiscussionSPCBourbon, Cherokee, Crawford, Labette, Neosho88 min
Apr 4, 1:29 AM CDTMesoscale DiscussionSPCCherokee91 min
Apr 3, 7:44 PM CDTMesoscale DiscussionSPCClark, Putnam, Schuyler, Scotland61 min
Apr 3, 8:11 PM CDTSevere Thunderstorm WatchSPCAudrain, Boone, Callaway, Cole, Franklin, Gasconade and 12 more6 hr
Apr 3, 9:51 PM CDTMesoscale DiscussionSPCBarry, McDonald, Newton84 min
Apr 3, 10:50 PM CDTMesoscale DiscussionSPCChariton, Howard, Knox, Lewis, Macon, Marion and 4 more85 min
Apr 4, 5:48 AM CDTMesoscale DiscussionSPCOregon, Ripley117 min
Apr 4, 7:22 AM CDTTornado WatchSPCBollinger, Butler, Cape Girardeau, Carter, Dunklin, Mississippi and 7 more7 hr

Nearby

Mesoscale Discussions in Kansas, 2011Mesoscale Discussions in Missouri, 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.