Alert archive / Missouri / Mesoscale Discussions in 2013

Mesoscale Discussion 721

May 19, 2013Cherokee County, Kansas; 23 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at May 19, 2013, 11:49 PM CDT for Cherokee County, Kansas; 23 counties in Missouri. It was in force for 56 min.

The area

The outline as issued.

The facts

Issued
May 19, 2013, 11:49 PM CDT (04:49 UTC)
Expired
May 20, 2013, 12:45 AM CDT
In force
56 min
Issued by
the Storm Prediction Center
All 24 counties

Cherokee County, KS, Barry County, MO, Barton County, MO, Camden County, MO, Cedar County, MO, Christian County, MO, Dade County, MO, Dallas County, MO, Douglas County, MO, Greene County, MO, Hickory County, MO, Jasper County, MO, Laclede County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Webster County, MO, Wright County, MO

The radar

The Springfield radar (KSGF), 7 km from the middle of the area, began a volume at 04:52 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

Springfield, MO (KSGF), launched 00:00Z, 4.8 hours before the alert went out and 59 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, Springfield, MO at 00:00Z on 2013-05-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 970 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, Springfield, MO at 00:00Z on 2013-05-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 137 square meters per square second.193958Sfc1 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
970 J/kg
Mixed-layer CIN
-187 J/kg
Mixed-layer LCL
1767 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
137 m²/s²
0-3 km storm-relative helicity
248 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.3

Open this sounding in Storm Lab

The text

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

115 
ACUS11 KWNS 200450
SWOMCD
SPC MCD 200449 
MOZ000-OKZ000-KSZ000-200545-

MESOSCALE DISCUSSION 0721
NWS STORM PREDICTION CENTER NORMAN OK
1149 PM CDT SUN MAY 19 2013

AREAS AFFECTED...SWRN AND CNTRL PORTIONS OF MO

CONCERNING...TORNADO WATCH 186...

VALID 200449Z - 200545Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 186 CONTINUES.

SUMMARY...A SEVERE STORM THREAT WILL PROBABLY PERSIST BEYOND THE
0600Z WATCH EXPIRATION TIME.  A LOCAL EXTENSION-IN-TIME OR A NEW
WATCH ISSUANCE MAY BE REQUIRED.

DISCUSSION...RADAR MOSAIC SHOWS A STRONG TO SEVERE SQUALL LINE OVER
FAR SERN KS.  THIS ACTIVITY WILL LIKELY MOVE INTO SWRN MO AND
MAINTAIN SOME SEVERE THREAT MAINLY IN THE FORM OF DMGG WINDS.  A
CONDITIONAL TORNADO THREAT WILL SEEMINGLY EXIST PREDICATED ON EITHER
A STORM DEVELOPING INTO A SUPERCELL AHEAD OF THIS COMPLEX OF STORMS
/LOW PROBABILITY/ OR ANY MESOVORTICES THAT MAY DEVELOP AS THE
CLUSTER MOVES EWD.  GIVEN A STRONG 60 KT LLJ SAMPLED BY THE SGF
VWP...STRONG MASS FLUX INTO THIS REGION WILL ACT TO SUSTAIN THE
ONGOING ACTIVITY BEYOND THE 06Z WATCH EXPIRATION TIME.

..SMITH.. 05/20/2013

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

ATTN...WFO...LSX...SGF...TSA...

LAT...LON   36549335 36569453 37119500 37779455 38039359 38229227
            37809153 36899181 36549335

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 19, 7:55 PM CDTMesoscale DiscussionSPCAllen, Anderson, Atchison, Brown, Chautauqua, Clay and 35 more65 min
May 19, 9:34 PM CDTMesoscale DiscussionSPCChautauqua, Labette, Montgomery, Neosho, Wilson26 min
May 19, 10:16 PM CDTMesoscale DiscussionSPCBourbon, Cherokee, Crawford59 min
May 20, 2:44 AM CDTMesoscale DiscussionSPCChautauqua, Cherokee, Labette, Montgomery2 hr
May 20, 8:46 AM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Coffey, Linn, Miami and 3 more59 min
May 20, 12:26 PM CDTMesoscale DiscussionSPCAllen, Bourbon, Chautauqua, Cherokee, Crawford, Elk and 6 more2 hr
May 20, 12:46 PM CDTTornado WatchSPCAllen, Anderson, Bourbon, Chautauqua, Cherokee, Coffey and 13 more8 hr
May 20, 2:31 PM CDTMesoscale DiscussionSPCAllen, Chautauqua, Cherokee, Crawford, Elk, Labette and 4 more119 min
May 19, 7:13 PM CDTMesoscale DiscussionSPCClark62 min
May 19, 8:10 PM CDTTornado WatchSPCClark, Scotland6 hr
May 20, 3:27 PM CDTMesoscale DiscussionSPCAudrain, Lincoln, Marion, Monroe, Montgomery, Pike and 2 more63 min
May 20, 5:07 PM CDTMesoscale DiscussionSPCAudrain, Crawford, Franklin, Gasconade, Lincoln, Marion and 8 more23 min
May 20, 5:24 PM CDTTornado WatchSPCAudrain, Boone, Callaway, Clark, Cole, Crawford and 20 more7 hr
May 20, 5:38 PM CDTMesoscale DiscussionSPCAndrew, DeKalb, Gentry, Harrison, Worth67 min
May 20, 6:53 PM CDTMesoscale DiscussionSPCCarter, Dent, Douglas, Howell, Iron, Madison and 8 more67 min

Nearby

Mesoscale Discussions in Missouri, 2013Mesoscale Discussions in Kansas, 2013Every mesoscale discussion in 2013

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.