Alert archive / Kansas / Mesoscale Discussions in 2012

Mesoscale Discussion 533

April 14, 201238 counties in Kansas; 9 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Apr 14, 2012, 4:54 PM CDT for 38 counties in Kansas; 9 counties in Oklahoma. It was in force for 66 min.

The area

The outline as issued.

The facts

Issued
Apr 14, 2012, 4:54 PM CDT (21:54 UTC)
Expired
Apr 14, 2012, 6:00 PM CDT
In force
66 min
Issued by
the Storm Prediction Center
All 47 counties

Barber County, KS, Barton County, KS, Clay County, KS, Cloud County, KS, Comanche County, KS, Dickinson County, KS, Edwards County, KS, Ellis County, KS, Ellsworth County, KS, Graham County, KS, Harper County, KS, Harvey County, KS, Jewell County, KS, Kingman County, KS, Kiowa County, KS, Lincoln County, KS, Marion County, KS, McPherson County, KS, Mitchell County, KS, Ness County, KS, Norton County, KS, Osborne County, KS, Ottawa County, KS, Pawnee County, KS, Phillips County, KS, Pratt County, KS, Reno County, KS, Republic County, KS, Rice County, KS, Rooks County, KS, Rush County, KS, Russell County, KS, Saline County, KS, Sedgwick County, KS, Smith County, KS, Stafford County, KS, Sumner County, KS, Trego County, KS, Alfalfa County, OK, Dewey County, OK, Ellis County, OK, Grant County, OK, Harper County, OK, Major County, OK, Roger Mills County, OK, Woods County, OK, Woodward County, OK

The radar

The Dodge City radar (KDDC), 96 km from the middle of the area, began a volume at 21:53 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

Dodge City, (KDDC), launched 12:00Z, 9.9 hours before the alert went out and 90 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 2012-04-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1516 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 2012-04-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 413 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
1516 J/kg
Mixed-layer CIN
-96 J/kg
Mixed-layer LCL
527 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
413 m²/s²
0-3 km storm-relative helicity
432 m²/s²
Significant tornado parameter
0.0
Supercell composite
11.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

560 
ACUS11 KWNS 142154
SWOMCD
SPC MCD 142154 
KSZ000-OKZ000-NEZ000-142300-

MESOSCALE DISCUSSION 0533
NWS STORM PREDICTION CENTER NORMAN OK
0454 PM CDT SAT APR 14 2012

AREAS AFFECTED...WRN/CNTRL KS INTO NW OK

CONCERNING...TORNADO WATCH 165...

VALID 142154Z - 142300Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 165 CONTINUES.

A NEW WW WILL BE NEEDED PRIOR TO SCHEDULED 23Z EXPIRATION.

THE DRY LINE REMAINS ROUGHLY ALONG A LINE FROM GAGE...DODGE CITY
INTO THE MCCOOK AREA...AND LATEST RUC GUIDANCE SUGGESTS LITTLE
EASTWARD ACCELERATION PRIOR TO THE 00-02Z TIME FRAME...WHEN THE EXIT
REGION OF THE MAIN UPPER JET STREAK /AROUND 100 KT AT 500 MB/
FINALLY BEGINS TO NOSE NORTHEASTWARD INTO SOUTHWEST KANSAS.  THIS
WILL CONTINUE TO PROVIDE A FOCUS FOR INTENSE NEW DISCRETE STORM
DEVELOPMENT IN THE PRESENCE OF STEEP LAPSE RATES...MODERATELY LARGE
CAPE AND STRONG SHEAR.  50+ KT SOUTHWESTERLY DEEP LAYER MEAN FLOW
WILL CONTINUE TO AIDE THE PROPAGATION OF SUPERCELLS AWAY FROM THE
INITIATING ZONE...ACROSS CENTRAL...AND PERHAPS PARTS OF
EASTERN...KANSAS...AS WELL AS NORTHWEST OKLAHOMA...WHERE CLOCKWISE
CURVED LOW-LEVEL HODOGRAPHS WILL CONTINUE TO ENLARGE AND BECOME
INCREASINGLY SUPPORTIVE OF POTENTIAL FOR STRONG TORNADOES.

..KERR.. 04/14/2012

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...TOP...ICT...OUN...GID...DDC...GLD...

LAT...LON   39700030 39989993 40039814 39889738 38929688 38049693
            37269725 36239826 35749930 35639977 36059998 37129980
            38449991 39090010 39680038 39700030

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 13, 9:14 PM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Butler, Chase, Chautauqua and 17 more61 min
Apr 14, 3:42 AM CDTTornado WatchSPCChautauqua, Labette, Montgomery5 hr
Apr 14, 7:11 AM CDTMesoscale DiscussionSPCCherokee, Labette64 min
Apr 14, 9:42 AM CDTMesoscale DiscussionSPCClark, Finney, Ford, Gove, Grant, Gray and 10 more93 min
Apr 14, 10:43 AM CDTTornado Watch PDSSPCBarber, Barton, Clark, Clay, Cloud, Comanche and 42 more7 hr
Apr 14, 11:44 AM CDTMesoscale DiscussionSPCBarber, Barton, Clark, Clay, Cloud, Comanche and 40 more61 min
Apr 14, 12:11 PM CDTMesoscale DiscussionSPCButler, Chase, Chautauqua, Coffey, Cowley, Dickinson and 19 more64 min
Apr 14, 1:41 PM CDTMesoscale DiscussionSPCDecatur, Rawlins2 hr
Apr 14, 1:44 PM CDTMesoscale DiscussionSPCBarton, Clark, Cloud, Edwards, Ellis, Ellsworth and 20 more61 min
Apr 14, 2:28 PM CDTMesoscale DiscussionSPCClay, Cloud, Jewell, Lincoln, Mitchell, Ottawa and 2 more32 min
Apr 14, 3:01 PM CDTMesoscale DiscussionSPCBarber, Barton, Clark, Comanche, Edwards, Ellsworth and 10 more29 min
Apr 14, 3:48 PM CDTMesoscale DiscussionSPCBarber, Barton, Clark, Clay, Cloud, Comanche and 33 more57 min
Apr 14, 4:47 PM CDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Nemaha58 min
Apr 14, 5:00 PM CDTTornado WatchSPCDoniphan7 hr
Apr 14, 5:24 PM CDTTornado Watch PDSSPCBarber, Barton, Brown, Butler, Chase, Chautauqua and 57 more9 hr
Apr 13, 7:35 PM CDTMesoscale DiscussionSPCBeckham, Blaine, Caddo, Canadian, Cleveland, Comanche and 24 more55 min
Apr 13, 8:36 PM CDTTornado WatchSPCAlfalfa, Beckham, Blaine, Caddo, Canadian, Cleveland and 31 more7 hr
Apr 13, 9:58 PM CDTMesoscale DiscussionSPCBeckham, Blaine, Caddo, Canadian, Cleveland, Comanche and 19 more92 min
Apr 13, 11:45 PM CDTMesoscale DiscussionSPCBeckham, Blaine, Caddo, Canadian, Cleveland, Comanche and 20 more90 min
Apr 14, 2:40 AM CDTMesoscale DiscussionSPCAlfalfa, Beckham, Blaine, Caddo, Canadian, Cleveland and 31 more65 min
Apr 14, 1:23 PM CDTMesoscale DiscussionSPCBeaver, Beckham, Blaine, Caddo, Canadian, Carter and 21 more2 hr

Nearby

Mesoscale Discussions in Kansas, 2012Mesoscale Discussions in Oklahoma, 2012Every mesoscale discussion in 2012

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.