{"id":71019,"date":"2026-06-29T15:02:00","date_gmt":"2026-06-29T15:02:00","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=71019"},"modified":"2026-07-03T16:18:36","modified_gmt":"2026-07-03T16:18:36","slug":"mesoscale-convective-system-produces","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/71019","title":{"rendered":"Mesoscale convective system produces strong winds, large hail and a few tornadoes across Nebraska and South Dakota"},"content":{"rendered":"\n<figure class=\"wp-block-video aligncenter\"><video autoplay controls loop muted src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2026\/06\/G19_IR_NE_SD_SVR_29JUN2026_loop_GOES-19_2026180_060117_2026180_141117.mp4\" playsinline><\/video><figcaption class=\"wp-element-caption\"><em>5-minute GOES-19 Infrared Window images with time-matched (+\/- 10 minutes) SPC Storm Reports plotted in white, from 0601-1411 UTC on 29 June<\/em><\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">5-minute CONUS Sector GOES-19 <em>(GOES-East)<\/em> Infrared Window images <em>(<strong>above<\/strong>)<\/em> included plots of <strong><a href=\"https:\/\/www.spc.noaa.gov\/climo\/reports\/260628_rpts.html\">SPC Storm Reports<\/a><\/strong> &#8212; which showed severe thunderstorms that grew into a Mesoscale Convective System which produced wind gusts as high as 131 mph, hail as large as 2.75 inches in diameter and a few tornadoes from northwestern Nebraska to northeastern South Dakota during the overnight hours leading up to sunrise on <strong><a href=\"https:\/\/www.spc.noaa.gov\/climo\/reports\/260628_rpts.html\">29 June 2026<\/a><\/strong>. More details about this event are available from <strong><a href=\"https:\/\/www.weather.gov\/abr\/June29thSignificantWindEvent\">NWS Aberdeen<\/a><\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The coldest cloud-top infrared brightness temperatures were -80 C (violet pixels) &#8212; which represented a significant ~3 km overshoot of the Most Unstable (MU) air parcel&#8217;s Equilibrium Level (EL), according to a plot of rawinsonde data from Aberdeen, South Dakota <strong><em>(below<\/em>)<\/strong>.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2026\/06\/260629_0000utc_kabr_raob.png\"><img decoding=\"async\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2026\/06\/260629_0000utc_kabr_raob.png\" alt=\"\"\/><\/a><figcaption class=\"wp-element-caption\"><em>Plot of rawinsonde data from Aberdeen, South Dakota at 0000 UTC on 29 June<\/em> [click to enlarge]<\/figcaption><\/figure>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>5-minute CONUS Sector GOES-19 (GOES-East) Infrared Window images (above) included plots of SPC Storm Reports &#8212; which showed severe thunderstorms that grew into a Mesoscale Convective System which produced wind gusts as high as 131 mph, hail as large as 2.75 inches in diameter and a few tornadoes from northwestern Nebraska to northeastern South Dakota [&hellip;]<\/p>\n","protected":false},"author":18,"featured_media":71020,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[159,3],"tags":[],"class_list":["post-71019","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-goes-19","category-severe-convection"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/71019","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/users\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/comments?post=71019"}],"version-history":[{"count":7,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/71019\/revisions"}],"predecessor-version":[{"id":71029,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/71019\/revisions\/71029"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/71020"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=71019"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=71019"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=71019"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}