{"id":60618,"date":"2024-08-22T16:48:14","date_gmt":"2024-08-22T16:48:14","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=60618"},"modified":"2024-08-22T16:48:14","modified_gmt":"2024-08-22T16:48:14","slug":"gilma-and-invest-91e-update-tropical-depression-1c-over-the-eastern-pacific","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/60618","title":{"rendered":"Gilma and Invest 91E (update:  Tropical Depression 1C) over the eastern Pacific"},"content":{"rendered":"\n<figure class=\"wp-block-video\"><video height=\"752\" style=\"aspect-ratio: 1336 \/ 752;\" width=\"1336\" controls loop src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2024\/08\/goeswest_abi_radf_c02_s20240821162020_e20240821213020_f32.mp4\"><\/video><figcaption class=\"wp-element-caption\">GOES-18 Visible (Band 2, 0.64 \u00b5m) Imagery, 1600-2130 UTC on 21 August 2024<\/figcaption><\/figure>\n\n\n\n<p>GOES-18 Visible imagery, above, <a href=\"https:\/\/geosphere.ssec.wisc.edu\/#playing:true;coordinate:625225,1633122;zoom:4;satellite:goeswest;product:%5B%7B%22n%22:%22c02%22,%22a%22:1%7D%5D;map_grid:on;num_frames:32;start_time:2024-08-21T16:20:00Z;timeframe:Start%20Time;\">from the CSPP Geosphere site<\/a>, shows Gilma and Tropical Invest #91E (<strong><em>the invest became a tropical depression at 1500 UTC on 22 August;  see below<\/em><\/strong>)  at around 17<sup>o<\/sup>N latitude on 21 August 2024 in the tropical eastern Pacific.  The animation below shows <a href=\"https:\/\/geosphere.ssec.wisc.edu\/#playing:true;coordinate:625225,1633122;zoom:4;satellite:goeswest;product:%5B%7B%22n%22:%22c02%22,%22a%22:1%7D%5D;map_grid:on;num_frames:32;start_time:2024-08-20T16:20:00Z;timeframe:Start%20Time;\">the same scene on 20 August<\/a>, and the organizational improvement in the invest is apparent.  On the 20th, the low level circulations were separate from the convection.  On the 21st, above, the low-level circulations are underneath the convection.  Slow organization has occurred.<\/p>\n\n\n\n<figure class=\"wp-block-video\"><video height=\"752\" style=\"aspect-ratio: 1336 \/ 752;\" width=\"1336\" controls loop src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2024\/08\/goeswest_abi_radf_c02_s20240820162020_e20240820213020_f32.mp4\"><\/video><figcaption class=\"wp-element-caption\">GOES-18 Visible (Band 2, 0.64 \u00b5m) Imagery, 1600-2130 UTC on 20 August 2024<\/figcaption><\/figure>\n\n\n\n<p>By sunrise on the 22nd, below (<a href=\"https:\/\/geosphere.ssec.wisc.edu\/#coordinate:625225,1633122;zoom:4;satellite:goeswest;product:%5B%7B%22n%22:%22c02%22,%22a%22:1%7D%5D;map_grid:on;num_frames:14;start_time:2024-08-22T13:50:00Z;timeframe:Start%20Time;\">link<\/a>), Gilma is a hurricane, with an invest to its east; Invest 91E has moved west of 140<sup>o<\/sup>E, become the responsibility of the Central Pacific Hurricane Center in Honolulu, and organized enough to become a tropical depression.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2024\/08\/goeswest_abi_radf_c02_20240822160020.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"579\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2024\/08\/goeswest_abi_radf_c02_20240822160020-1024x579.png\" alt=\"\" class=\"wp-image-60621\" srcset=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2024\/08\/goeswest_abi_radf_c02_20240822160020-1024x579.png 1024w, https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2024\/08\/goeswest_abi_radf_c02_20240822160020-300x170.png 300w, https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2024\/08\/goeswest_abi_radf_c02_20240822160020-768x434.png 768w, https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2024\/08\/goeswest_abi_radf_c02_20240822160020.png 1470w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">GOES-18 Visible (Band 2, 0.64 \u00b5m) imagery, 1600 UTC on 22 August 2024 (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n<p>The invest was sampled from the direct broadcast site at Honolulu (<a href=\"http:\/\/soest-hcc1.hcc.hawaii.edu\/browser\/?date=2024-08-22&amp;site=all&amp;group=all&amp;satellite=all&amp;sensor=all&amp;product=all\">data here<\/a>).  The toggle below compares Suomi-NPP I05 VIIRS imagery (11.45 \u00b5m) and the Suomi-NPP ATMS Rain Rate shortly after 1100 UTC on 22 August.  The system is in a region of warm SSTs and low shear.  Interests in Hawaii should continue to monitor its evolution.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2024\/08\/npp_viirsi05_atms_rain_rate_20240822_111313_91E_INVESTtoggle.gif\" alt=\"\" class=\"wp-image-60622\"\/><figcaption class=\"wp-element-caption\">Suomi-NPP I05 infrared imagery (11.45 \u00b5m) and ATMS-derived rain rate, 1111 UTC on 22 August 2024 (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n<p>For more information on this system, refer to the <a href=\"https:\/\/www.nhc.noaa.gov\/?cpac\">Central Pacific Hurricane Center<\/a> and the <a href=\"https:\/\/weather.gov\/hfo\">National Weather Service office in Honolulu<\/a>.  CPHC has started issuing advisories on this system (<a href=\"https:\/\/www.nhc.noaa.gov\/text\/refresh\/HFOTCDCP1+shtml\/221500.shtml\">tropical Depression 1C<\/a>) as of 1500 UTC on 22 August.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>GOES-18 Visible imagery, above, from the CSPP Geosphere site, shows Gilma and Tropical Invest #91E (the invest became a tropical depression at 1500 UTC on 22 August; see below) at around 17oN latitude on 21 August 2024 in the tropical eastern Pacific. The animation below shows the same scene on 20 August, and the organizational [&hellip;]<\/p>\n","protected":false},"author":19,"featured_media":60623,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[89,114,93,49,2,48],"tags":[],"class_list":["post-60618","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-atms","category-goes-18","category-mirs","category-suomi_npp","category-tropical-cyclones","category-viirs"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/60618","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\/19"}],"replies":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/comments?post=60618"}],"version-history":[{"count":2,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/60618\/revisions"}],"predecessor-version":[{"id":60625,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/60618\/revisions\/60625"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/60623"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=60618"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=60618"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=60618"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}