{"id":52914,"date":"2023-06-11T23:59:00","date_gmt":"2023-06-11T23:59:00","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=52914"},"modified":"2023-06-16T17:08:12","modified_gmt":"2023-06-16T17:08:12","slug":"severe-thunderstorms-in-the-southern-plains-2","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/52914","title":{"rendered":"Severe thunderstorms in the Southern Plains (with examples of overshooting tops with “warm trench” signatures)"},"content":{"rendered":"

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GOES-16 “Clean” Infrared Window (10.3 \u00b5m) images, with time-matched SPC Storm Reports plotted in cyan [click to play animated GIF | MP4<\/strong><\/a>]<\/p><\/div>1-minute Mesoscale Domain Sector<\/strong><\/a> GOES-16 (GOES-East)<\/em> \u201cClean\u201d Infrared Window (10.3 \u00b5m<\/strong><\/a>) images with time-matched (+\/- 3 minutes) plots of SPC Storm Reports<\/strong><\/a> (above)<\/strong><\/em> showed thunderstorms that produced hail as large as 4.50 inches in diameter, damaging winds to 71 mph and a tornado across parts of New Mexico, Texas and Oklahoma from the late afternoon into the subsequent nighttime hours on 11 June 2023<\/strong><\/a>.<\/p>\n

In a closer look at 1-minute GOES-16 Infrared images over the Dallas-Fort Worth, Texas area (rawinsonde site KFWD) from 0000-0200 UTC on 12 June (below)<\/strong><\/em>, several overshooting top pulses became surrounded by brief “warm trench” signatures — a likely indication of compensating subsidence around the periphery of these vigorous updrafts as they rapidly ascended past the local equilibrium level and\/or tropopause. The coldest overshooting top exhibited an infrared brightness temperature of -87.6\u00baC at 0115 UTC<\/strong><\/a>.<\/p>\n

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GOES-16 “Clean” Infrared Window (10.3 \u00b5m) images [click to play animated GIF | MP4<\/strong><\/a>]<\/p><\/div>Comparisons of GOES-16 Infrared image, CLAVR-x<\/strong><\/a> Cloud Top Height and Operational Cloud Top Height<\/strong><\/a> for overshooting tops with surrounding “warm trench” signatures in Tarrant County and Denton County at 0106 UTC, 0116 UTC and 0121 UTC are shown below —  note how the full-resolution (nominal 2-km) CLAVR-x Cloud Top Height products (created at CIMSS) more accurately depicted the overshooting top and surrounding warm trench features, which were not as apparent in the 10-km resolution Operational Cloud Top Height products that are currently distributed to AWIPS users.<\/p>\n

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GOES-16 “Clean” Infrared Window (10.3 \u00b5m), CLAVR-x Cloud Top Height and Operational Cloud Top Height at 0106 UTC [click to enlarge]<\/p><\/div>\n

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GOES-16 “Clean” Infrared Window (10.3 \u00b5m), CLAVR-x Cloud Top Height and Operational Cloud Top Height at 0116 UTC [click to enlarge]_<\/p><\/div>\n

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GOES-16 “Clean” Infrared Window (10.3 \u00b5m), CLAVR-x Cloud Top Height and Operational Cloud Top Height at 0121 UTC [click to enlarge]<\/p><\/div>When comparing cursor-sampled values of Cloud Top Height for the coldest portion of overshooting tops in Tarrant and Denton County (below)<\/strong><\/em>, the CLAVR-x values were always significantly higher (14.9 kft to 16.8 kft higher) — since the CLAVR-x higher spatial resolution more accurately depicted the size and location of the overshooting tops (as seen in the Infrared images).<\/p>\n

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Cursor-sampled values of GOES-16 Infrared (10.3 \u00b5m) brightness temperature, CLAVR-x Cloud Top Height and Operational Cloud Top Height for an overshooting top over Tarrant County at 0106 UTC [click to enlarge]<\/p><\/div>\n

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Cursor-sampled values of GOES-16 Infrared (10.3 \u00b5m) brightness temperature, CLAVR-x Cloud Top Height and Operational Cloud Top Height for an overshooting top over Tarrant County at 0116 UTC [click to enlarge]<\/p><\/div>\n

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Cursor-sampled values of GOES-16 Infrared (10.3 \u00b5m) brightness temperature, CLAVR-x Cloud Top Height and Operational Cloud Top Height for an overshooting top over Denton County at 0116 UTC [click to enlarge]<\/p><\/div>\n

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Cursor-sampled values of GOES-16 Infrared (10.3 \u00b5m) brightness temperature, CLAVR-x Cloud Top Height and Operational Cloud Top Height for an overshooting top over Tarrant County at 0121 UTC [click to enlarge]<\/p><\/div>However, cursor-sampled Cloud Top Height values within the corresponding warm trench features were generally similar (below)<\/strong><\/em>, although the CLAVR-x values were usually several hundred feet lower than the Operational values.<\/p>\n

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Cursor-sampled values of GOES-16 Infrared (10.3 \u00b5m) brightness temperature, CLAVR-x Cloud Top Height and Operational Cloud Top Height for a warm trench feature over Tarrant County at 0106 UTC [click to enlarge]<\/p><\/div>\n

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Cursor-sampled values of GOES-16 Infrared (10.3 \u00b5m) brightness temperature, CLAVR-x Cloud Top Height and Operational Cloud Top Height for a warm trench feature over Tarrant County at 0116 UTC [click to enlarge]<\/p><\/div>\n

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Cursor-sampled values of GOES-16 Infrared (10.3 \u00b5m) brightness temperature, CLAVR-x Cloud Top Height and Operational Cloud Top Height for a warm trench feature over Denton County at 0116 UTC [click to enlarge]<\/p><\/div>\n

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Cursor-sampled values of GOES-16 Infrared (10.3 \u00b5m) brightness temperature, CLAVR-x Cloud Top Height and Operational Cloud Top Height for a warm trench feature over Tarrant County at 0121 UTC [click to enlarge]<\/p><\/div>\n

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Cursor-sampled values of GOES-16 Infrared (10.3 \u00b5m) brightness temperature, CLAVR-x Cloud Top Height and Operational Cloud Top Height for a warm trench feature over Denton County at 0121 UTC [click to enlarge]<\/p><\/div>The largest CLAVR-x Cloud Top Height difference between an overshooting top and its surrounding warm trench was 19,431 feet<\/strong> (over Tarrant County at 0116 UTC, shown below) — the corresponding lower spatial resolution Operational Cloud Top Height difference was only 2973 feet<\/strong>!<\/p>\n

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Cursor-sampled values of Cloud Top Height for the storm over Tarrant County at 0116 UTC [click to enlarge]<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

1-minute Mesoscale Domain Sector GOES-16 (GOES-East) \u201cClean\u201d Infrared Window (10.3 \u00b5m) images with time-matched (+\/- 3 minutes) plots of SPC Storm Reports (above) showed thunderstorms that produced hail as large as 4.50 inches in diameter, damaging winds to 71 mph and a tornado across parts of New Mexico, Texas and Oklahoma from the late afternoon into the subsequent […]<\/p>\n","protected":false},"author":18,"featured_media":52925,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[63,74,3],"tags":[],"class_list":["post-52914","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-clavrx","category-goes-16","category-severe-convection"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/52914","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=52914"}],"version-history":[{"count":26,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/52914\/revisions"}],"predecessor-version":[{"id":52970,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/52914\/revisions\/52970"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/52925"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=52914"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=52914"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=52914"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}