{"id":65046,"date":"2025-05-29T18:01:17","date_gmt":"2025-05-29T18:01:17","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=65046"},"modified":"2025-05-29T19:33:25","modified_gmt":"2025-05-29T19:33:25","slug":"tropical-storm-alvin-forms-in-the-eastern-pacific-ocean","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/65046","title":{"rendered":"Tropical Storm Alvin forms in the eastern Pacific Ocean"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2025\/05\/goeswest_abi_radf_true_color_night_20250525_to_05291710step.gif\"><img loading=\"lazy\" decoding=\"async\" width=\"1472\" height=\"838\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2025\/05\/goeswest_abi_radf_true_color_night_20250525_to_05291710step.gif\" alt=\"\" class=\"wp-image-65047\"\/><\/a><figcaption class=\"wp-element-caption\">GOES-18 True Color Imagery at 1710 UTC, 25-29 May 2025 (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n<p>Daily CSPP Geosphere imagery (<a href=\"https:\/\/geosphere.ssec.wisc.edu\/#playing:true;coordinate:3344916,1419919;zoom:4.4;satellite:goeswest;num_frames:8;frame_stride:144;start_time:2025-05-22T17:10:22Z;timeframe:Start%20Time;\">direct link<\/a>) showing 1710 UTC imagery from 25-29 May 2025, above, depict the slow organization and intensification of an area of disturbed weather south of Mexico (<a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/64978\">discussed here<\/a>) as it became Tropical Storm Alvin, the first storm of the eastern Pacific Hurricane Season.  This is the 4th Alvin storm in the tropical east Pacific, following ones in <a href=\"https:\/\/www.nhc.noaa.gov\/archive\/2019\/ALVIN.shtml?\">2019<\/a> (that was named on June 26th, strengthened to a hurricane, and was present for almost 4 days), <a href=\"https:\/\/www.nhc.noaa.gov\/archive\/2013\/ALVIN.shtml?\">2013<\/a> (that was named on May 15th and remained a tropical storm during its short life) and <a href=\"https:\/\/www.nhc.noaa.gov\/archive\/2007\/ALVIN.shtml?\">2007<\/a> (that was named on May 28th and remained a tropical storm).   The 2025 version of Alvin is not forecast to make landfall; it is forecast to move north and dissipate over the weekend.<\/p>\n\n\n\n<p>Scatterometry data captured from this <a href=\"https:\/\/scatterometer.knmi.nl\/tile_prod\/index.php?cmd=showimage&amp;image=asc_b_20250529_15_32.png&amp;clicklat=16&amp;clicklon=-108&amp;day=0&amp;imgt=fla\">KNMI website<\/a>, below, shows two overpasses early on 29 May 2025, one from HY-2B and one from Metop-B.  A closed circulation center and tropical storm-force winds are apparent.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"775\" height=\"891\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2025\/05\/Scatterometry_alvin_20250529_1230_1530_stepanim.gif\" alt=\"\" class=\"wp-image-65051\" style=\"aspect-ratio:1;width:941px;height:auto\"\/><figcaption class=\"wp-element-caption\">Scatterometry plots from HY-2C (1250 UTC) and Metop-B (1550 UTC) over Alvin on 29 May 2025 (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>Upper-level water vapor imagery, below, shows the cold convective cloud tops associated with the developing system.   Alvin is embedded within a moist airmass.  The favorable environment suggests slow strengthening as indicated in the forecast.<\/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\/2025\/05\/G18Band08-20250529_1430_to_1920anim.gif\"><img loading=\"lazy\" decoding=\"async\" width=\"1361\" height=\"892\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2025\/05\/G18Band08-20250529_1430_to_1920anim.gif\" alt=\"\" class=\"wp-image-65061\"\/><\/a><figcaption class=\"wp-element-caption\">GOES-18 Upper Level Water Vapor infrared (Band 8, 6.19 \u00b5m) imagery, 1430-1920 UTC on 29 May 2025.  The 1500 UTC NHC forecast path for Alvin is indicated (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n<p>The National Hurricane Center is issuing advisories on Alvin every 6 hours <a href=\"https:\/\/www.nhc.noaa.gov\/?epac#Alvin\">here<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Daily CSPP Geosphere imagery (direct link) showing 1710 UTC imagery from 25-29 May 2025, above, depict the slow organization and intensification of an area of disturbed weather south of Mexico (discussed here) as it became Tropical Storm Alvin, the first storm of the eastern Pacific Hurricane Season. This is the 4th Alvin storm in the [&hellip;]<\/p>\n","protected":false},"author":19,"featured_media":65054,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[114,58,47,25,2],"tags":[],"class_list":["post-65046","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-goes-18","category-metop","category-other-satellites","category-satellite-winds","category-tropical-cyclones"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/65046","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=65046"}],"version-history":[{"count":8,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/65046\/revisions"}],"predecessor-version":[{"id":65063,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/65046\/revisions\/65063"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/65054"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=65046"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=65046"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=65046"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}