Alert archive / Kansas / Mesoscale Discussions in 2014

Mesoscale Discussion 573

May 11, 201431 counties in Kansas; 4 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at May 11, 2014, 8:30 PM CDT for 31 counties in Kansas; 4 counties in Oklahoma. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued
May 11, 2014, 8:30 PM CDT (01:30 UTC)
Expired
May 11, 2014, 10:00 PM CDT
In force
90 min
Issued by
the Storm Prediction Center
All 35 counties

Barber County, KS, Barton County, KS, Clark County, KS, Clay County, KS, Cloud County, KS, Comanche County, KS, Dickinson County, KS, Edwards County, KS, Ellsworth County, KS, Ford County, KS, Geary County, KS, Harper County, KS, Harvey County, KS, Kingman County, KS, Kiowa County, KS, Lincoln County, KS, Marion County, KS, McPherson County, KS, Mitchell County, KS, Morris County, KS, Ottawa County, KS, Pawnee County, KS, Pratt County, KS, Reno County, KS, Rice County, KS, Riley County, KS, Rush County, KS, Russell County, KS, Saline County, KS, Sedgwick County, KS, Stafford County, KS, Alfalfa County, OK, Harper County, OK, Woods County, OK, Woodward County, OK

The radar

The Wichita radar (KICT), 86 km from the middle of the area, began a volume at 01:32 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 (KFOE), launched 00:00Z, 1.5 hours before the alert went out and 237 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 2014-05-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1294 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 2014-05-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 94 square meters per square second.19395878Sfc1 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
1294 J/kg
Mixed-layer CIN
-118 J/kg
Mixed-layer LCL
1661 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
94 m²/s²
0-3 km storm-relative helicity
264 m²/s²
Significant tornado parameter
0.1
Supercell composite
6.2

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.

IssuedProductOfficeCountiesLasted
May 11, 9:56 PM CDTSevere Thunderstorm WatchSPCAtchison, Brown, Butler, Chase, Clay, Cowley and 26 more6 hr
May 11, 11:41 PM CDTMesoscale DiscussionSPCBarber, Chase, Dickinson, Geary, Harper, Harvey and 7 more64 min
May 12, 2:38 AM CDTMesoscale DiscussionSPCAnderson, Atchison, Coffey, Douglas, Franklin, Jefferson and 7 more2 hr
May 12, 3:15 AM CDTSevere Thunderstorm WatchSPCJohnson, Leavenworth, Miami, Wyandotte3 hr
May 12, 11:52 AM CDTMesoscale DiscussionSPCCherokee, Labette83 min
May 11, 7:51 PM CDTMesoscale DiscussionSPCBeckham, Greer, Harmon, Jackson, Kiowa, Roger Mills and 2 more54 min
May 11, 8:18 PM CDTSevere Thunderstorm WatchSPCBeckham, Blaine, Custer, Dewey, Greer, Harmon and 5 more6 hr
May 12, 2:12 PM CDTMesoscale DiscussionSPCDelaware, Ottawa2 hr

Nearby

Mesoscale Discussions in Kansas, 2014Mesoscale Discussions in Oklahoma, 2014Every mesoscale discussion in 2014

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.