{"id":63196,"date":"2025-02-24T22:59:00","date_gmt":"2025-02-24T22:59:00","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=63196"},"modified":"2025-02-28T21:40:12","modified_gmt":"2025-02-28T21:40:12","slug":"south-dakotas-first-february-tornado-on-record","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/63196","title":{"rendered":"South Dakota’s first February tornado on record"},"content":{"rendered":"

<\/a>

5-minute GOES-16 Red Visible (0.64 \u00b5m, left) and Clean Infrared Window (10.3 \u00b5m, right) images, with\/without an overlay of GLM Flash Extent Density, from 2031-2221 UTC on 24 February [click to play MP4 animation]<\/p><\/div>5-minute CONUS Sector GOES-16 (GOES-East)<\/em> Visible and Infrared images (above)<\/em><\/strong> displayed a thunderstorm that was moving southeast from Aberdeen (KABR) to Watertown (KATY) in northeastern South Dakota on 24 February 2025<\/strong><\/a>. While overall GLM<\/strong><\/a>-detected lightning activity was relatively modest, periodic increases in Flash Extent Density (orange to red pixels) were evident.<\/p>\n

A Special Weather Statement was issued for this thunderstorm at 2058 UTC (below)<\/strong><\/em>, advising on its potential to produce 50 mph winds and nickel-size hail. Note the slight northwest displacement of the Flash Extent Density pixels, compared to the thunderstorm overshooting top as seen in GOES-16 Visible and Infrared imagery \u2014 this is because the commonly-used Gridded GLM products (such as Flash Extent Density, Minimum Flash Area and Total Optical Energy) are not corrected for parallax<\/strong><\/a>. With this particular low-topped storm, the magnitude of GOES-16 parallax correction would be about 15 km<\/strong><\/a> (9 miles) to the southeast.<\/p>\n

<\/a>

GOES-16 Red Visible (0.64 \u00b5m, left) and Clean Infrared Window (10.3 \u00b5m, right) images at 2101 UTC, with\/without an overlay of a Special Weather Statement polygon and GLM Flash Extent Density [click to enlarge]<\/p><\/div>GOES-19 (Preliminary\/Non-operational) Visible and Infrared images (below)<\/strong><\/em> included a red “T” denoting the location of a brief tornado that occurred at 2211 UTC, southeast of Watertown (NWS Aberdeen<\/strong><\/a> | SPC Storm Reports<\/strong><\/a>).<\/p>\n

<\/a>

5-minute GOES-19 Red Visible (0.64 \u00b5m, left) and Clean Infrared Window (10.3 \u00b5m, right) images, from 2101-2211 UTC on 24 February. The location of the 2211 UTC tornado is plotted in red [click to play animated GIF | MP4<\/strong><\/a>]<\/p><\/div>\n

_________<\/strong><\/p>\n

LightningCast probabilities (source<\/a>), below, from 2042 – 2232 UTC, showed high probabilities confined to the storm that produced the tornado; those probabilities diminished quickly after the tornado occurred.<\/p>\n

https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2025\/02\/LightningCastRE_SouthDakota24February2024.mp4<\/a><\/video><\/div>\n","protected":false},"excerpt":{"rendered":"

5-minute CONUS Sector GOES-16 (GOES-East) Visible and Infrared images (above) displayed a thunderstorm that was moving southeast from Aberdeen (KABR) to Watertown (KATY) in northeastern South Dakota on 24 February 2025. While overall GLM-detected lightning activity was relatively modest, periodic increases in Flash Extent Density (orange to red pixels) were evident. A Special Weather Statement […]<\/p>\n","protected":false},"author":18,"featured_media":63229,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[76,74,159,30,115,3],"tags":[],"class_list":["post-63196","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glm","category-goes-16","category-goes-19","category-lightning","category-lightningcast","category-severe-convection"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/63196","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=63196"}],"version-history":[{"count":21,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/63196\/revisions"}],"predecessor-version":[{"id":63271,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/63196\/revisions\/63271"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/63229"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=63196"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=63196"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=63196"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}