Alert archive / Kansas / Mesoscale Discussions in 2014

Mesoscale Discussion 412

April 27, 201452 counties in Kansas; 32 counties in Oklahoma; Clay County, Wichita County, Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 27, 2014, 5:09 AM CDT for 52 counties in Kansas; 32 counties in Oklahoma; Clay County, Wichita County, Texas. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued
Apr 27, 2014, 5:09 AM CDT (10:09 UTC)
Expired
Apr 27, 2014, 6:45 AM CDT
In force
96 min
Issued by
the Storm Prediction Center
Chance of a watch
40%
All 86 counties

Anderson County, KS, Atchison County, KS, Barber County, KS, Barton County, KS, Butler County, KS, Chase County, KS, Chautauqua County, KS, Clay County, KS, Cloud County, KS, Coffey County, KS, Comanche County, KS, Cowley County, KS, Dickinson County, KS, Douglas County, KS, Edwards County, KS, Elk County, KS, Ellsworth County, KS, Franklin County, KS, Geary County, KS, Greenwood County, KS, Harper County, KS, Harvey County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Kingman County, KS, Kiowa County, KS, Leavenworth County, KS, Lincoln County, KS, Lyon County, KS, Marion County, KS, Marshall County, KS, McPherson County, KS, Mitchell County, KS, Morris County, KS, Nemaha County, KS, Osage County, KS, Ottawa County, KS, Pawnee County, KS, Pottawatomie County, KS, Pratt County, KS, Reno County, KS, Rice County, KS, Riley County, KS, Russell County, KS, Saline County, KS, Sedgwick County, KS, Shawnee County, KS, Stafford County, KS, Sumner County, KS, Wabaunsee County, KS, Woodson County, KS, Alfalfa County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Cleveland County, OK, Comanche County, OK, Cotton County, OK, Custer County, OK, Dewey County, OK, Garfield County, OK, Garvin County, OK, Grady County, OK, Grant County, OK, Jefferson County, OK, Kay County, OK, Kingfisher County, OK, Kiowa County, OK, Lincoln County, OK, Logan County, OK, Major County, OK, McClain County, OK, Noble County, OK, Oklahoma County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Pottawatomie County, OK, Stephens County, OK, Tillman County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Clay County, TX, Wichita County, TX

The radar

The Vance AFB radar (KVNX), 46 km from the middle of the area, began a volume at 10:10 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

Norman, OK (KOUN), launched 00:00Z, 10.2 hours before the alert went out and 196 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, Norman, OK at 00:00Z on 2014-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1087 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, Norman, OK at 00:00Z on 2014-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 129 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
1087 J/kg
Mixed-layer CIN
-181 J/kg
Mixed-layer LCL
1782 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
129 m²/s²
0-3 km storm-relative helicity
235 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.7

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
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, 6:10 PM CDTMesoscale DiscussionSPCBourbon, Cherokee, Crawford, Johnson, Linn, Miami and 1 more95 min
Apr 27, 6:26 PM CDTTornado WatchSPCJohnson, Leavenworth, Miami, Wyandotte8 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
Apr 27, 9:03 AM CDTMesoscale DiscussionSPCAnderson, Collin, Dallas, Delta, Ellis, Falls and 15 more27 min
Apr 27, 9:16 AM CDTSevere Thunderstorm WatchSPCAnderson, Bell, Collin, Delta, Falls, Fannin and 16 more6 hr
Apr 27, 11:27 AM CDTMesoscale DiscussionSPCAnderson, Bell, Bosque, Camp, Collin, Coryell and 27 more93 min
Apr 27, 2:56 PM CDTSevere Thunderstorm WatchSPCDelta, Ellis, Fannin, Henderson, Hopkins, Hunt and 6 more5 hr
Apr 27, 5:14 PM CDTMesoscale DiscussionSPCDelta, Falls, Freestone, Henderson, Hopkins, Hunt and 6 more91 min
Apr 27, 6:28 PM CDTMesoscale DiscussionSPCBastrop, Brazos, Burleson, Caldwell, Fayette, Lee and 3 more92 min

Nearby

Mesoscale Discussions in Kansas, 2014Mesoscale Discussions in Oklahoma, 2014Mesoscale Discussions in Texas, 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.