Alert archive / Missouri / Mesoscale Discussions in 2014

Mesoscale Discussion 430

April 27, 20147 counties in Kansas; 35 counties in Missouri; Ottawa County, Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Apr 27, 2014, 6:10 PM CDT for 7 counties in Kansas; 35 counties in Missouri; Ottawa County, Oklahoma. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued
Apr 27, 2014, 6:10 PM CDT (23:10 UTC)
Expired
Apr 27, 2014, 7:45 PM CDT
In force
95 min
Issued by
the Storm Prediction Center
Chance of a watch
95%
All 43 counties

Bourbon County, KS, Cherokee County, KS, Crawford County, KS, Johnson County, KS, Linn County, KS, Miami County, KS, Wyandotte County, KS, Barry County, MO, Barton County, MO, Bates County, MO, Benton County, MO, Camden County, MO, Cass County, MO, Cedar County, MO, Christian County, MO, Dade County, MO, Dallas County, MO, Douglas County, MO, Greene County, MO, Henry County, MO, Hickory County, MO, Howell County, MO, Jackson County, MO, Jasper County, MO, Johnson County, MO, Laclede County, MO, Lawrence County, MO, McDonald County, MO, Miller County, MO, Morgan County, MO, Newton County, MO, Ozark County, MO, Pettis County, MO, Polk County, MO, Pulaski County, MO, St. Clair County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Vernon County, MO, Webster County, MO, Wright County, MO, Ottawa County, OK

The radar

The Springfield radar (KSGF), 79 km from the middle of the area, began a volume at 23:12 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

Springfield, MO (KSGF), launched 12:00Z, 11.2 hours before the alert went out and 116 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 12:00Z on 2014-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1412 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 12:00Z on 2014-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 369 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
1412 J/kg
Mixed-layer CIN
-304 J/kg
Mixed-layer LCL
983 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
369 m²/s²
0-3 km storm-relative helicity
225 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.

438 
ACUS11 KWNS 272311
SWOMCD
SPC MCD 272310 
ARZ000-MOZ000-OKZ000-KSZ000-280045-

MESOSCALE DISCUSSION 0430
NWS STORM PREDICTION CENTER NORMAN OK
0610 PM CDT SUN APR 27 2014

AREAS AFFECTED...SW MO

CONCERNING...SEVERE POTENTIAL...TORNADO WATCH LIKELY 

VALID 272310Z - 280045Z

PROBABILITY OF WATCH ISSUANCE...95 PERCENT

SUMMARY...SEVERAL SUPERCELL STORMS...SOME WITH A HISTORY OF
PRODUCING TORNADOES...WILL CONTINUE TO TRACK E/NE ACROSS SW MO. A
NEW TORNADO WATCH WILL BE NEEDED WITHIN THE NEXT HOUR.

DISCUSSION...A NARROW CORRIDOR ACROSS SW MO WILL CONTINUE TO SUPPORT
ONGOING SUPERCELL THUNDERSTORMS...SOME WITH A HISTORY OF PRODUCING
TORNADOES NEAR THE MO/KS STATE LINE. THE AXIS OF GREATEST TORNADO
POTENTIAL WILL EXTEND FROM NEAR THE KANSAS CITY METRO AREA SEWD TO
JUST EAST OF SPRINGFIELD MO. HERE...THE BOUNDARY LAYER HAS RECOVERED
ENOUGH TO SUPPORT MUCAPE VALUES APPROACHING 2000 J/KG. THE 88-D VAD
WIND PROFILE FROM KSFG SHOWED BACKED LOW LEVEL FLOW WITH A FAVORABLE
CYCLONICALLY CURVED HODOGRAPH WITH O-1 KM SRH APPROACHING 400 M2/S2.


FURTHER E TOWARD CENTRAL AND S-CENTRAL MO THE TORNADO THREAT WILL
NOT BE ZERO BUT WILL DECLINE DUE AS EARLIER CONVECTION HAS LEAD TO A
COOLER AND MORE STABLE BOUNDARY LAYER. HOWEVER...LOW LEVEL SHEAR
WILL REMAIN SUFFICIENT FOR ROTATING STORMS. FURTHERMORE...CONVECTION
MAY BEGIN TO GROW UPSCALE AS IT MOVES INTO THIS REGION.

..LEITMAN/HART.. 04/27/2014

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

ATTN...WFO...LSX...LZK...SGF...EAX...TSA...TOP...

LAT...LON   38769505 39149510 39219492 39239456 38869341 38389251
            37889196 37049183 36519169 36449230 36449311 36489507
            38769505

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 27, 5:09 AM CDTMesoscale DiscussionSPCAnderson, Atchison, Barber, Barton, Butler, Chase and 46 more96 min
Apr 27, 6:09 AM CDTSevere Thunderstorm WatchSPCAllen, Anderson, Brown, Butler, Chase, Chautauqua and 41 more6 hr
Apr 27, 7:55 AM CDTMesoscale DiscussionSPCAllen, Anderson, Atchison, Bourbon, Brown, Butler and 40 more95 min
Apr 27, 10:37 AM CDTMesoscale DiscussionSPCBourbon, Crawford, Doniphan, Johnson, Leavenworth, Linn and 2 more113 min
Apr 27, 11:23 AM CDTTornado WatchSPCBourbon, Cherokee, Crawford, Johnson, Leavenworth, Linn and 2 more8 hr
Apr 27, 11:54 AM CDTMesoscale DiscussionSPCClay, Cloud, Dickinson, Jewell, Mitchell, Ottawa and 3 more96 min
Apr 27, 12:16 PM CDTTornado WatchSPCJewell, Mitchell, Smith7 hr
Apr 27, 4:57 PM CDTMesoscale DiscussionSPCBourbon, Cherokee, Crawford, Johnson, Linn, Miami and 1 more63 min
Apr 27, 6:26 PM CDTTornado WatchSPCJohnson, Leavenworth, Miami, Wyandotte8 hr
Apr 27, 1:59 PM CDTMesoscale DiscussionSPCAdair, Audrain, Barton, Benton, Boone, Caldwell and 60 more61 min
Apr 27, 2:13 PM CDTSevere Thunderstorm WatchSPCAudrain, Boone, Callaway, Clark, Cole, Crawford and 25 more7 hr
Apr 27, 5:33 AM CDTSevere Thunderstorm WatchSPCAlfalfa, Atoka, Blaine, Bryan, Caddo, Canadian and 51 more6 hr
Apr 27, 10:06 AM CDTMesoscale DiscussionSPCAtoka, Bryan, Cherokee, Choctaw, Coal, Craig and 16 more84 min
Apr 27, 12:25 PM CDTMesoscale DiscussionSPCLeFlore, McCurtain, Sequoyah2 hr
Apr 27, 1:46 PM CDTTornado WatchSPCAdair, Cherokee, Choctaw, Craig, Delaware, Haskell and 11 more9 hr
Apr 27, 3:36 PM CDTTornado Watch PDSSPCLeFlore, McCurtain7 hr
Apr 27, 4:52 PM CDTMesoscale DiscussionSPCAdair, Cherokee, Haskell, LeFlore, McCurtain, Sequoyah53 min
Apr 27, 6:11 PM CDTMesoscale DiscussionSPCAdair, Haskell, LeFlore, McCurtain, Sequoyah64 min

Nearby

Mesoscale Discussions in Missouri, 2014Mesoscale 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.