{"id":61195,"date":"2024-10-23T22:59:00","date_gmt":"2024-10-23T22:59:00","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=61195"},"modified":"2024-10-27T02:48:52","modified_gmt":"2024-10-27T02:48:52","slug":"hurricane-kristy-reaches-category-4-intensity","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/61195","title":{"rendered":"Hurricane Kristy reaches Category 5 intensity"},"content":{"rendered":"

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1-minute GOES-18 Red Visible (0.64 \u00b5m, left) and Clean Infrared Window (10.3 \u00b5m, right) images with an overlay of GLM Flash Points, from 1331-1600 UTC on 23 October [click to play MP4 animation]<\/p><\/div>1-minute Mesoscale Domain Sector<\/strong><\/a> GOES-18 (GOES-West)<\/em> Visible and Infrared imagery of Hurricane Kristy in the East Pacific Ocean on 23 October (above)<\/strong><\/em> highlighted a well-defined eye, with GLM-indicated lightning activity increasing within the inner eyewall. Cloud-top infrared brightness temperatures in the -80s C (shades of violet to purple) were apparent at times. Kristy reached Category 4<\/strong> intensity as of the 2100 UTC advisory<\/strong><\/a> from NHC.<\/p>\n

A closer view of GOES-18 Visible images (below)<\/strong><\/em> revealed low-altitude mesovortices within the eye.<\/p>\n

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1-minute GOES-18 Red Visible (0.64 \u00b5m) images with an overlay of GLM Flash Points, from 1601-2100 UTC on 23 October [click to play MP4 animation]<\/p><\/div>Hurricane Kristy was moving through an environment characterized by low values of deep-layer wind shear, as seen in an analysis from the CIMSS Tropical Cyclones<\/strong><\/a> site (below)<\/strong><\/em> — a factor which favored its rapid intensification<\/strong><\/a>.<\/p>\n

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GOES-18 Infrared images, with an overlay of 2000 UTC deep-layer wind shear contours and streamlines<\/p><\/div>\n

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===== 24 October Update =====<\/strong><\/center>
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1-minute GOES-18 Red Visible (0.64 \u00b5m, left) and Clean Infrared Window (10.3 \u00b5m, right) images with an overlay of GLM Flash Points, from 1802-2300 UTC on 24 October [click to play MP4 animation]<\/p><\/div>On 24 October, 1-minute GOES-18 Visible and Infrared imagery (above)<\/strong><\/em> again displayed a well-defined eye, with GLM-indicated lightning activity increasing within the inner eyewall — and cloud-top infrared brightness temperatures in the -80s C (shades of violet to purple) were apparent at times. Kristy continued to further intensify, becoming a Category 5<\/strong> hurricane as of the 2100 UTC advisory<\/strong><\/a> from NHC.<\/p>\n

In a closer view of GOES-18 Visible images (below)<\/strong><\/em>, distinct low-altitude mesovortices were once again seen within the eye.<\/p>\n

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1-minute GOES-18 Red Visible (0.64 \u00b5m) images with an overlay of GLM Flash Points, from 1802-2300 UTC on 24 October [click to play MP4 animation]<\/p><\/div>Earlier in the morning, when Kristy was still a Category 4 hurricane, a Synthetic Aperture Radar (SAR) image at 1401 UTC (below)<\/strong><\/em> indicated that a derived maximum wind speed of 130 knots was present in the NE quadrant of the eyewall (source<\/strong><\/a>).<\/p>\n

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RCM-3 SAR image at 1401 UTC on 24 October [click to enlarge]<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

1-minute Mesoscale Domain Sector GOES-18 (GOES-West) Visible and Infrared imagery of Hurricane Kristy in the East Pacific Ocean on 23 October (above) highlighted a well-defined eye, with GLM-indicated lightning activity increasing within the inner eyewall. Cloud-top infrared brightness temperatures in the -80s C (shades of violet to purple) were apparent at times. Kristy reached Category […]<\/p>\n","protected":false},"author":18,"featured_media":61233,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[76,114,30,104,25,2],"tags":[],"class_list":["post-61195","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glm","category-goes-18","category-lightning","category-sar","category-satellite-winds","category-tropical-cyclones"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/61195","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=61195"}],"version-history":[{"count":38,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/61195\/revisions"}],"predecessor-version":[{"id":61279,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/61195\/revisions\/61279"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/61233"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=61195"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=61195"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=61195"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}