Alert archive / Kansas / Mesoscale Discussions in 2013

Mesoscale Discussion 417

April 9, 20134 states

The Storm Prediction Center issued this mesoscale discussion at Apr 9, 2013, 8:41 PM CDT for 4 states. It was in force for 64 min.

The area

The outline as issued.

The facts

Issued
Apr 9, 2013, 8:41 PM CDT (01:41 UTC)
Expired
Apr 9, 2013, 9:45 PM CDT
In force
64 min
Issued by
the Storm Prediction Center
All 33 counties

Fremont County, IA, Montgomery County, IA, Page County, IA, Brown County, KS, Clay County, KS, Cloud County, KS, Dickinson County, KS, Geary County, KS, Jackson County, KS, Lincoln County, KS, Marshall County, KS, Nemaha County, KS, Ottawa County, KS, Pottawatomie County, KS, Republic County, KS, Riley County, KS, Saline County, KS, Wabaunsee County, KS, Washington County, KS, Atchison County, MO, Cass County, NE, Fillmore County, NE, Gage County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE, Saline County, NE, Seward County, NE, Thayer County, NE

The radar

The Grand Island radar (KUEX), 136 km from the middle of the area, began a volume at 01:43 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 nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 1.7 hours before the alert went out and 138 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, Omaha, NE at 00:00Z on 2013-04-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 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, Omaha, NE at 00:00Z on 2013-04-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 469 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
460 m above ground
0-6 km bulk shear
66 kt
0-1 km storm-relative helicity
469 m²/s²
0-3 km storm-relative helicity
702 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.6

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 9, 7:37 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Benton, Black Hawk, Boone and 59 more83 min
Apr 9, 11:27 PM CDTMesoscale DiscussionSPCFremont, Montgomery, Page63 min
Apr 9, 7:22 PM CDTMesoscale DiscussionSPCBarber, Barton, Clark, Cloud, Comanche, Edwards and 13 more2 hr
Apr 9, 8:51 PM CDTMesoscale DiscussionSPCBarber, Barton, Butler, Chase, Comanche, Cowley and 16 more54 min
Apr 9, 9:01 PM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Cherokee, Crawford, Franklin and 7 more89 min
Apr 10, 5:32 AM CDTMesoscale DiscussionSPCBarber, Butler, Chase, Cowley, Dickinson, Greenwood and 13 more4 hr
Apr 10, 1:03 PM CDTMesoscale DiscussionSPCBollinger, Butler, Cape Girardeau, Carter, Crawford, Dent and 25 more117 min
Apr 10, 1:20 PM CDTTornado WatchSPCDunklin, Pemiscot10 hr
Apr 10, 1:46 PM CDTTornado WatchSPCBollinger, Butler, Cape Girardeau, Carter, Crawford, Dent and 24 more7 hr
Apr 10, 3:01 PM CDTMesoscale DiscussionSPCBollinger, Butler, Cape Girardeau, Carter, Crawford, Dent and 22 more119 min
Apr 10, 6:09 PM CDTMesoscale DiscussionSPCBollinger, Butler, Cape Girardeau, Carter, Crawford, Dent and 29 more96 min
Apr 10, 6:52 PM CDTSevere Thunderstorm WatchSPCLincoln, Marion, Montgomery, Pike, Ralls, Warren7 hr

Nearby

Mesoscale Discussions in Kansas, 2013Mesoscale Discussions in Nebraska, 2013Mesoscale Discussions in Iowa, 2013Every mesoscale discussion in 2013

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.