![](\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2021\/11\/211124_goes16_30second_visible_dustRGB_splitCloudTopPhaseBTD_Argentina_blowing_dust_anim.gif\")
<\/a>GOES-16 “Red” Visible (0.64 \u00b5m), Dust RGB and Split Cloud Top Phase (11.2 \u00b5m – 8.4 \u00b5m) BTD images [click to play animated GIF | MP4<\/strong><\/a>]<\/p><\/div>30-second Mesoscale Domain Sector<\/strong><\/a> GOES-16 (GOES-East)<\/em> “Red” Visible (0.64 \u00b5m<\/strong><\/a>), Dust RGB<\/strong><\/a> and Split Cloud Top Phase (11.2 \u00b5m – 8.4 \u00b5m<\/strong><\/a>) brightness temperature difference (BTD) images (above)<\/strong><\/em> revealed a plume of blowing dust propagating northward across the San Juan Province<\/strong><\/a> of western Argentina late in the day on 24 November 2021. The dust was being channeled through a gap in higher terrain along the foothills of the Andes (below)<\/strong><\/em>.<\/p>\n GOES-16 “Red” Visible (0.64 \u00b5m) and topography images [click to enlarge]<\/p><\/div>A larger-scale view of hourly GOES-16 Visible images with plots of surface reports (below)<\/strong><\/em> suggested that this dust occurred in the vicinity of a strong cold front that was moving northward across Argentina.<\/p>\n GOES-16 “Red” Visible (0.64 \u00b5m) images, with METAR surface reports plotted in cyan [click to enlarge]<\/p><\/div>Mendoza — located south-southwest of where the dust plume first became apparent in GOES-16 imagery — reported a thunderstorm with dust at 2000 UTC (along with a southeasterly wind gust to 32 knots), followed by a reduction of surface visibility to 0.5 miles at 2215 UTC as the air temperature sharply dropped with the cold frontal passage (below)<\/strong><\/em>. About 260 miles (420 km) east of Mendoza at Rio Cuarto<\/strong><\/a>, a similar sharp temperature drop was seen as the cold front passed.<\/p>\n<\/a><\/a>