Alert archive / Missouri / Severe Thunderstorm Watches in 2014

Severe Thunderstorm Watch 75

April 13, 20149 counties in Arkansas; 50 counties in Missouri; 4 counties in Oklahoma

The Storm Prediction Center issued this severe thunderstorm watch at Apr 13, 2014, 4:27 PM CDT for 9 counties in Arkansas; 50 counties in Missouri; 4 counties in Oklahoma. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Apr 13, 2014, 4:27 PM CDT (21:27 UTC)
Expired
Apr 13, 2014, 11:06 PM CDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
65 kt
All 63 counties

Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Madison County, AR, Marion County, AR, Newton County, AR, Searcy County, AR, Washington County, AR, Audrain County, MO, Barry County, MO, Barton County, MO, Benton County, MO, Boone County, MO, Callaway County, MO, Camden County, MO, Cedar County, MO, Christian County, MO, Cole County, MO, Cooper County, MO, Crawford County, MO, Dade County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Franklin County, MO, Gasconade County, MO, Greene County, MO, Henry County, MO, Hickory County, MO, Howard County, MO, Howell County, MO, Jasper County, MO, Laclede County, MO, Lawrence County, MO, Lincoln County, MO, Maries County, MO, McDonald County, MO, Miller County, MO, Moniteau County, MO, Montgomery County, MO, Morgan County, MO, Newton County, MO, Osage County, MO, Ozark County, MO, Pettis County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, Randolph County, MO, Saline County, MO, St. Clair County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Vernon County, MO, Warren County, MO, Webster County, MO, Wright County, MO, Adair County, OK, Cherokee County, OK, Delaware County, OK, Ottawa County, OK

The radar

The Springfield radar (KSGF), 17 km from the middle of the area, began a volume at 21:29 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
20%
One or more EF2 to EF5 tornadoes
10%
Ten or more severe wind reports
60%
One or more gusts of 65 knots or more
30%
Ten or more severe hail reports
30%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
80%

Warnings issued inside it

17 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Apr 13, 5:10 PM CDTSevere Thunderstorm WarningSGFBarton, Vernon50 min
Apr 13, 5:39 PM CDTSevere Thunderstorm WarningSGFBarton, Jasper, Newton51 min
Apr 13, 5:40 PM CDTSevere Thunderstorm WarningEAXBates, Henry50 min
Apr 13, 5:40 PM CDTSevere Thunderstorm WarningTSACraig, Delaware, Mayes, Ottawa, Rogers65 min
Apr 13, 5:54 PM CDTSevere Thunderstorm WarningSGFBenton, Cedar, Hickory, Polk, St. Clair, Vernon66 min
Apr 13, 6:15 PM CDTSevere Thunderstorm WarningSGFBarry, Barton, Cedar, Christian, Dade, Greene and 5 more60 min
Apr 13, 6:28 PM CDTSevere Thunderstorm WarningTSAAdair, Cherokee, Delaware, Mayes, Wagoner47 min
Apr 13, 6:36 PM CDTTornado WarningSGFCedar, Polk24 min
Apr 13, 6:48 PM CDTSevere Thunderstorm WarningSGFBarry, McDonald, Newton, Stone57 min
Apr 13, 6:56 PM CDTSevere Thunderstorm WarningSGFBenton, Camden, Cedar, Dallas, Hickory, Laclede and 3 more64 min
Apr 13, 7:09 PM CDTSevere Thunderstorm WarningSGFBarry, Christian, Dallas, Douglas, Greene, Laclede and 5 more51 min
Apr 13, 7:14 PM CDTSevere Thunderstorm WarningTSAWashington46 min
Apr 13, 7:49 PM CDTSevere Thunderstorm WarningSGFCamden, Laclede, Pulaski, Texas26 min
Apr 13, 8:02 PM CDTSevere Thunderstorm WarningTSACrawford, Franklin, Madison, Washington58 min
Apr 13, 8:51 PM CDTSevere Thunderstorm WarningLZKJohnson, Logan, Newton, Pope, Scott, Yell39 min
Apr 13, 9:01 PM CDTSevere Thunderstorm WarningTSAFranklin, Madison14 min
Apr 13, 9:50 PM CDTSevere Thunderstorm WarningLZKConway, Faulkner, Johnson, Newton, Perry, Pope and 4 more40 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 9.5 hours before the alert went out and 36 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 2014-04-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 381 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 12:00Z on 2014-04-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 367 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
381 J/kg
Mixed-layer CIN
-335 J/kg
Mixed-layer LCL
883 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
367 m²/s²
0-3 km storm-relative helicity
378 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 13, 2:34 PM CDTMesoscale DiscussionSPCColumbia, Hempstead, Howard, Lafayette, Little River, Miller and 2 more2 hr
Apr 13, 4:13 PM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Crawford, Franklin and 9 more32 min
Apr 13, 4:54 PM CDTMesoscale DiscussionSPCClark, Columbia, Hempstead, Howard, Lafayette, Little River and 4 more66 min
Apr 13, 5:13 PM CDTTornado WatchSPCColumbia, Hempstead, Howard, Lafayette, Little River, Miller and 3 more6 hr
Apr 13, 6:01 PM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Madison, Marion and 3 more59 min
Apr 13, 6:25 PM CDTMesoscale DiscussionSPCClark, Conway, Crawford, Franklin, Garland, Hempstead and 15 more65 min
Apr 12, 9:12 PM CDTMesoscale DiscussionSPCAndrew, Atchison, Buchanan, Gentry, Holt, Nodaway and 1 more63 min
Apr 12, 11:26 PM CDTMesoscale DiscussionSPCAdair, Andrew, Buchanan, Caldwell, Clay, Clinton and 16 more64 min
Apr 13, 7:41 AM CDTMesoscale DiscussionSPCAdair, Andrew, Atchison, Audrain, Boone, Buchanan and 43 more2 hr
Apr 13, 12:02 PM CDTSevere Thunderstorm WatchSPCAdair, Andrew, Bates, Buchanan, Caldwell, Carroll and 24 more7 hr
Apr 13, 2:32 PM CDTMesoscale DiscussionSPCBuchanan, Clinton, Platte88 min
Apr 13, 12:26 PM CDTMesoscale DiscussionSPCCaddo, Canadian, Carter, Cleveland, Comanche, Cotton and 25 more94 min
Apr 13, 1:56 PM CDTTornado WatchSPCAtoka, Bryan, Canadian, Carter, Cleveland, Coal and 39 more8 hr
Apr 13, 3:09 PM CDTMesoscale DiscussionSPCCarter, Cleveland, Creek, Garvin, Grady, Lincoln and 12 more96 min

Nearby

Severe Thunderstorm Watches in Missouri, 2014Severe Thunderstorm Watches in Arkansas, 2014Severe Thunderstorm Watches in Oklahoma, 2014Every severe thunderstorm watch 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.