{"id":6478,"date":"2010-08-27T17:17:39","date_gmt":"2010-08-27T17:17:39","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=6478"},"modified":"2010-08-28T16:38:58","modified_gmt":"2010-08-28T16:38:58","slug":"the-active-tropical-atlantic","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/6478","title":{"rendered":"The Active Tropical Atlantic"},"content":{"rendered":"

\"\"<\/a><\/p>\n

The infrared imagery from Friday morning, 27 August, shows three separate tropical systems — in various stages of development — over the Atlantic Ocean, with a fourth system poised to move out into the tropical Atlantic from Africa. Meteosat imagery<\/a> shows a fifth system moving westward over central Africa (These images are available at the University of Wisconsin<\/a> SSEC<\/a>‘s Geostationary Image Browser<\/a>).<\/p>\n

\"\"<\/a><\/p>\n

Hurricane Danielle, above, as seen by GOES-15 (Click here<\/a> for a longer loop from GOES-13) is a mature Category IV storm over the central Atlantic, with well developed outflow in an environment characterized by warm sea-surface temperatures and small vertical wind shear<\/a>. The cold cloud tops<\/a> surrounding the mostly cloud-free eye have brightness temperatures in the 195-200 K range. GOES-15 IR Imagery shows similar temperatures.<\/a><\/p>\n

\"\"<\/a><\/p>\n

Tropical Storm Earl, above, is in an environment not as conducive to development as Danielle. Analyses from the CIMSS Tropical Weather Web Page<\/a> show a storm track that has recently passed over cooler ocean water<\/a>. More importantly, Earl is surrounded by dry Saharan Air<\/a> and that dry air is suppressing some of the convective activity needed to fuel system development. Analyses for Total Precipitable Water<\/a> (taken from this site<\/A>) also show Earl entraining dry air. However, the projected path of Earl is towards a warmer sea surface in a more moisture-rich environment, so intensification is forecast.<\/p>\n

\"\"<\/a><\/p>\n

In contrast the Earl, the disturbance off the coast of Africa, above, as viewed from GOES-12, is over a region of warm water<\/a>, and is south of dry air with origins over the Sahara<\/a>. Shear values over the storm<\/a> are low, so intensification should occur.<\/p>\n

The next names in the list for the Atlantic are Fiona, Gaston and Hermine. For the latest on these storms, visit the National Hurricane Center website<\/a>.<\/p>\n

(Added: Dan Lindsey at CIRA notes the similarity to 1995. Here<\/a> is an image from 2345 UTC on 29 August 1995 showing a similar line-up of storms across the tropical Atlantic).<\/p>\n","protected":false},"excerpt":{"rendered":"

The infrared imagery from Friday morning, 27 August, shows three separate tropical systems — in various stages of development — over the Atlantic Ocean, with a fourth system poised to move out into the tropical Atlantic from Africa. Meteosat imagery shows a fifth system moving westward over central Africa (These images are available at the […]<\/p>\n","protected":false},"author":19,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[10,19,11,43,2],"tags":[],"class_list":["post-6478","post","type-post","status-publish","format-standard","hentry","category-general-interpretation","category-goes-12","category-goes-13","category-goes-15","category-tropical-cyclones"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/6478","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=6478"}],"version-history":[{"count":14,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/6478\/revisions"}],"predecessor-version":[{"id":6515,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/6478\/revisions\/6515"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=6478"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=6478"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=6478"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}