Severe Thunderstorms on July 11 across southeast Kansas

Overview

Very humid air and above normal temperatures combined to produce extreme instability across the region on the afternoon and evening hours of July 11, 2020. Scattered thunderstorms developed across east central Kansas during the afternoon hours and spread slowly south and east across southeast Kansas through the late afternoon and early evening hours. Some of the storms produced very large hail around the size of softballs as well as numerous reports of damaging winds. The Oswego area experienced more widespread wind damage with estimated speeds around 90 mph with isolated higher gusts.

Photos & Video
Storm Reports
Environment and Radar

Photos & Video

Just got a message from Longton, Kan. Look at this hail that came down! âš¾ï¸ #kswx pic.twitter.com/4ORZroEbaj — Annette Lawless KAKE ðŸŒ» (@AnnetteLawless) July 12, 2020	Hail that fell in Chetopa, KS this evening! My father-in-law said some was larger than golf balls. #kswx #hail #weather @NWSWichita pic.twitter.com/9OLp679WZ6 — Justin Johnson (@MrJohnson5th) July 12, 2020	LARGE hail from the storms headed into NE Oklahoma. #kswx #okwx @FOX23 https://t.co/jCRMIcPqiy — Laura Mock â›ˆ (@LauraMockWX) July 11, 2020
Backyard case took me about an hour down the road to Waverly, KS this afternoon. I arrived about 15 minutes after hail fall. Found multiple 3”+ stones. Largest was ~3.75”. There were multiple cracked windshields in town. #KSwx @NWSTopeka pic.twitter.com/gLttCLcooV — Ryan Difani (@RyanDifani) July 11, 2020	Large trees and limbs down and hay shed destroyed 2.25 miles ENE of Labette KS just now, ~1.5” hail reported as well. @nwswichita #kswx Forwarded photos from a relative, no media use pic.twitter.com/jISASMn2gy — Joseph Miller (@macho_diamond) July 11, 2020	Tennis ball sized hail at Rest, Kansas. #kswx @NWSWichita @StormHour pic.twitter.com/v33A3ZbO9K — Bryce Kintigh (@stormchasrbryce) July 11, 2020
#Hail approximately 1/4 S of previous tweet - Rest, KS #kswx â¦@stormchasrbryceâ© pic.twitter.com/vyjdjbHJ4r — Beth Bowdoin (@skewy11) July 11, 2020	Massive hail 1 north of Waverly, KS@NWSTopeka #kswx pic.twitter.com/ReyP6agxlQ — Cole Allen (@cole_allen1) July 11, 2020	Big onze #KSwx pic.twitter.com/KpA2S7DJxS — Austin Jones (@MoTorChaser) July 11, 2020
Photo taken near Oswego, KS -photo courtesy Labette Co EM	Photo taken near Oswego, KS -photo courtesy Labette Co EM	Oswego, KS -photo courtesy Labette Co EM
Oswego, KS -photo courtesy Labette Co EM	Oswego, KS -photo courtesy Labette Co EM	Oswego, KS -photo courtesy Labette Co EM
Photo taken near Oswego, KS -photo courtesy Labette Co EM	Photo taken near Oswego, KS -photo courtesy Labette Co EM

Storm Reports

Large Hail & Damaging Wind Reports

Environment and Radar


Above normal temperatures in the mid and upper 90s combined with dewpoint temperatures in the mid and upper 70s to produce extreme instability during the afternoon and evening hours of July 11, 2020 over portions of southern Kansas. Furthermore, a cold front approaching from the north served as a focus for thunderstorm development.	The difference in wind speed and direction between the surface and 6 km above ground of 50+ kts proved more than sufficient for severe storm organization and longevity, especially given the extreme amounts of instability.


Area radar loop from 4-8:30 PM on July 11. A relatively small cluster of storms impacted southeast Kansas.	Estimated 24-hour rainfall through 7 AM July 12.

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