{"id":67899,"date":"2025-11-18T20:16:00","date_gmt":"2025-11-18T20:16:00","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=67899"},"modified":"2025-11-20T18:35:05","modified_gmt":"2025-11-20T18:35:05","slug":"offshore-transport-of-blowing-dust-from-southern-argentina","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/67899","title":{"rendered":"Offshore transport of blowing dust from southern Argentina"},"content":{"rendered":"

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10-minute GOES-19 daytime True Color RGB and nighttime Dust RGB images, from 1200 UTC on 17 November to 0710 UTC on 18 November [click to play animated GIF]<\/p><\/div>10-minute Full Disk scan GOES-19 (GOES-East)<\/em> daytime True Color RGB + nighttime Dust RGB<\/strong><\/a> images — created using Geo2Grid<\/strong><\/a> (above)<\/strong><\/em>\u00a0showed the offshore transport of significant amounts of blowing dust from the Patagonia region of southern Argentina on 17-18 November 2025.<\/p>\n

A slightly longer period of GOES-19 Dust RGB images (below)<\/strong><\/em> displayed the plume of airborne dust (brighter shades of magenta) as it arced eastward then southward across the southern Atlantic Ocean.<\/p>\n

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10-minute GOES-19 Dust RGB images, from 1100 UTC on 17 November to 1500 UTC on 18 November [click to play animated GIF]<\/p><\/div>The airborne dust also exhibited a similar magenta signature in Nighttime Microphysics RGB<\/strong><\/a> images from the CSPP GeoSphere<\/strong><\/a> site (below)<\/strong><\/em>.<\/p>\n

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10-minute GOES-19 daytime True Color RGB and Nighttime Microphysics RGB images, from 1200 UTC on 17 November to 0700 UTC on 18 November [click to play MP4 animation]<\/p><\/div>Strong boundary layer winds\u00a0 — which lofted the areas of blowing dust — developed in the wake of a cold front associated with a low pressure system that was deepening off the coast of Argentina (below)<\/strong><\/em>.<\/p>\n

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12-hour surface analyses, from 0000 UTC on 17 November to 1200 UTC on 18 November [click to play animated GIF]<\/p><\/div>There was a wind gust to 75 kts (86 mph) at METAR site SAVC at 1500 UTC \u2014 and for several hours leading up to that time, blowing dust had reduced the surface visibility to less than 1 mile at that airport (below)<\/strong><\/em>.<\/p>\n

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Cursor sample of the Comodoro, Argentina (SAVC) METAR at 1500 UTC on 17 November [click to enlarge]<\/p><\/div>
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Time series of surface observation data at Comodoro, Argentina (SAVC) from 1000-2200 UTC on 17 November [click to enlarge]<\/p><\/div>5 hours later there was a wind gust to 61 kts (70 mph) at METAR site SAVT at 2000 UTC \u2014 and just before that time, blowing dust reduced the surface visibility to about 1 mile at that airport (below)<\/strong><\/em>.<\/p>\n

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Cursor sample of the Trelew Almirante, Argentina (SAVT) METAR at 2000 UTC on 17 November [click to enlarge]<\/p><\/div>\n

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Time series of surface observation data at Trelew Almirante, Argentina (SAVT) from 0600 UTC on 17 November to 0000 UTC on 18 November [click to enlarge]<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

10-minute Full Disk scan GOES-19 (GOES-East) daytime True Color RGB + nighttime Dust RGB images — created using Geo2Grid (above)\u00a0showed the offshore transport of significant amounts of blowing dust from the Patagonia region of southern Argentina on 17-18 November 2025. A slightly longer period of GOES-19 Dust RGB images (below) displayed the plume of airborne […]<\/p>\n","protected":false},"author":18,"featured_media":67910,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[7,132,159,45],"tags":[],"class_list":["post-67899","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-air-quality","category-geo2grid","category-goes-19","category-redgreenblue-rgb-images"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/67899","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=67899"}],"version-history":[{"count":17,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/67899\/revisions"}],"predecessor-version":[{"id":67919,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/67899\/revisions\/67919"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/67910"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=67899"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=67899"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=67899"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}