Alert archive / Kansas / Mesoscale Discussions in 2016

Mesoscale Discussion 456

April 26, 201643 counties in Kansas; 5 counties in Nebraska; Washington County, Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Apr 26, 2016, 1:35 PM CDT for 43 counties in Kansas; 5 counties in Nebraska; Washington County, Oklahoma. It was in force for 115 min.

The area

The outline as issued.

The facts

Issued
Apr 26, 2016, 1:35 PM CDT (18:35 UTC)
Expired
Apr 26, 2016, 3:30 PM CDT
In force
115 min
Issued by
the Storm Prediction Center
Chance of a watch
95%
All 49 counties

Allen County, KS, Anderson County, KS, Butler County, KS, Chase County, KS, Chautauqua County, KS, Clay County, KS, Cloud County, KS, Coffey County, KS, Cowley County, KS, Dickinson 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, Kingman County, KS, Lincoln County, KS, Lyon County, KS, Marion County, KS, Marshall County, KS, McPherson County, KS, Mitchell County, KS, Montgomery County, KS, Morris County, KS, Nemaha County, KS, Osage County, KS, Ottawa County, KS, Pottawatomie County, KS, Reno County, KS, Republic County, KS, Rice County, KS, Riley County, KS, Saline County, KS, Sedgwick County, KS, Shawnee County, KS, Sumner County, KS, Wabaunsee County, KS, Washington County, KS, Wilson County, KS, Woodson County, KS, Gage County, NE, Jefferson County, NE, Johnson County, NE, Pawnee County, NE, Thayer County, NE, Washington County, OK

The radar

The Topeka radar (KTWX), 80 km from the middle of the area, began a volume at 18:36 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

Topeka, KS (KFOE), launched 12:00Z, 6.6 hours before the alert went out and 124 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, Topeka, KS at 12:00Z on 2016-04-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1934 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, Topeka, KS at 12:00Z on 2016-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 268 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
1934 J/kg
Mixed-layer CIN
-66 J/kg
Mixed-layer LCL
628 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
268 m²/s²
0-3 km storm-relative helicity
330 m²/s²
Significant tornado parameter
2.7
Supercell composite
22.6

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 26, 2:18 AM CDTMesoscale DiscussionSPCAtchison, Brown, Clay, Cloud, Dickinson, Doniphan and 21 more117 min
Apr 26, 3:02 AM CDTSevere Thunderstorm WatchSPCBrown, Clay, Cloud, Douglas, Geary, Jackson and 14 more6 hr
Apr 26, 4:37 AM CDTMesoscale DiscussionSPCAtchison, Brown, Clay, Cloud, Doniphan, Douglas and 13 more83 min
Apr 26, 6:23 AM CDTSevere Thunderstorm WatchSPCAtchison, Doniphan, Johnson, Leavenworth, Miami, Wyandotte7 hr
Apr 26, 7:18 AM CDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Jefferson, Leavenworth, Wyandotte87 min
Apr 26, 10:09 AM CDTMesoscale DiscussionSPCChautauqua, Labette, Montgomery96 min
Apr 26, 2:12 PM CDTTornado WatchSPCAllen, Anderson, Butler, Chase, Chautauqua, Clay and 46 more7 hr
Apr 26, 6:14 PM CDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Leavenworth61 min
Apr 26, 6:32 PM CDTMesoscale DiscussionSPCAllen, Anderson, Butler, Chase, Chautauqua, Clay and 46 more58 min
Apr 26, 2:35 AM CDTMesoscale DiscussionSPCChase, Deuel, Dundy, Keith, Perkins115 min
Apr 26, 1:53 PM CDTMesoscale DiscussionSPCAlfalfa, Beckham, Blaine, Caddo, Canadian, Carter and 35 more2 hr
Apr 26, 2:32 PM CDTTornado Watch PDSSPCAlfalfa, Atoka, Blaine, Bryan, Caddo, Canadian and 47 more9 hr
Apr 26, 5:13 PM CDTMesoscale DiscussionSPCBlaine, Caddo, Canadian, Comanche, Garfield, Grant and 4 more62 min

Nearby

Mesoscale Discussions in Kansas, 2016Mesoscale Discussions in Nebraska, 2016Mesoscale Discussions in Oklahoma, 2016Every mesoscale discussion in 2016

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.