Alert archive / Kansas / Mesoscale Discussions in 2016

Mesoscale Discussion 450

April 26, 201619 counties in Kansas; 10 counties in Missouri; 5 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Apr 26, 2016, 4:37 AM CDT for 19 counties in Kansas; 10 counties in Missouri; 5 counties in Nebraska. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued
Apr 26, 2016, 4:37 AM CDT (09:37 UTC)
Expired
Apr 26, 2016, 6:00 AM CDT
In force
83 min
Issued by
the Storm Prediction Center
All 34 counties

Atchison County, KS, Brown County, KS, Clay County, KS, Cloud County, KS, Doniphan County, KS, Douglas County, KS, Jackson County, KS, Jefferson County, KS, Jewell County, KS, Johnson County, KS, Leavenworth County, KS, Marshall County, KS, Nemaha County, KS, Pottawatomie County, KS, Republic County, KS, Riley County, KS, Shawnee County, KS, Washington County, KS, Wyandotte County, KS, Buchanan County, MO, Cass County, MO, Clay County, MO, Clinton County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Pettis County, MO, Platte County, MO, Ray County, MO, Gage County, NE, Jefferson County, NE, Pawnee County, NE, Richardson County, NE, Thayer County, NE

The radar

The Topeka radar (KTWX), 65 km from the middle of the area, began a volume at 09:41 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 00:00Z, 9.6 hours before the alert went out and 43 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 00:00Z on 2016-04-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 748 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 00:00Z on 2016-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 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
748 J/kg
Mixed-layer CIN
-47 J/kg
Mixed-layer LCL
1375 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
25 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.1

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, 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, 1:35 PM CDTMesoscale DiscussionSPCAllen, Anderson, Butler, Chase, Chautauqua, Clay and 37 more115 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, 10:03 AM CDTMesoscale DiscussionSPCAudrain, Benton, Boone, Callaway, Camden, Carroll and 40 more117 min
Apr 26, 11:52 AM CDTSevere Thunderstorm WatchSPCBollinger, Butler, Cape Girardeau, Carter, Crawford, Dallas and 35 more7 hr
Apr 26, 2:42 PM CDTMesoscale DiscussionSPCBollinger, Cape Girardeau, Iron, Jefferson, Madison, Mississippi and 11 more2 hr
Apr 26, 3:03 PM CDTSevere Thunderstorm WatchSPCMississippi, New Madrid, Scott6 hr
Apr 26, 2:35 AM CDTMesoscale DiscussionSPCChase, Deuel, Dundy, Keith, Perkins115 min

Nearby

Mesoscale Discussions in Kansas, 2016Mesoscale Discussions in Missouri, 2016Mesoscale Discussions in Nebraska, 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.