{"id":1212,"date":"1999-11-30T00:00:00","date_gmt":"1999-11-30T05:00:00","guid":{"rendered":"https:\/\/setsail.com\/?p=1212"},"modified":"2015-10-16T12:12:07","modified_gmt":"2015-10-16T17:12:07","slug":"ridges-and-troughs","status":"publish","type":"post","link":"https:\/\/setsail.com\/ridges-and-troughs\/","title":{"rendered":"Ridges and Troughs"},"content":{"rendered":"<div class=\"question\">I&#8217;m reading your excellent Mariner&#8217;s Weather Handbook. Thank you for a clearly written explanation of weather processes. I am confused on one important point however. In the sections starting with &#8220;Ridges and Troughs&#8221; (p. 127 +), if I understand correctly, a RIDGE occurs when the 500 mb pressure is at a higher elevation than the surrounding 500 Mb air and at the surface underneath the ridge is an area of LOW pressure. However, when I listen to the weather broadcasts (NOAA, weather radio, nightly TV news, the weather channel) they all refer to RIDGES of HIGH pressure! Did I miss something?&#8211;Steve<\/div>\n<p><!--more--><\/p>\n<div class=\"answer\">\n<p> Hi Steve: What the TV folks are talking about is the surface weather features, and here they talk about pressure&#8211;i.e. high pressure ridges, etc. At the 500 Mb level and above the discussion is in terms of heights of pressure. Hence the difference (and often confusion) in terms. Regards&#8211;Steve Dashew<\/p>\n<p align=\"center\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>I&#8217;m reading your excellent Mariner&#8217;s Weather Handbook. Thank you for a clearly written explanation of weather processes. I am confused <a class=\"read-more\" href=\"https:\/\/setsail.com\/ridges-and-troughs\/\">&#8230;Read More<\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10,22],"tags":[],"class_list":["post-1212","post","type-post","status-publish","format-standard","hentry","category-tech-talk","category-marine-weather-faqs"],"_links":{"self":[{"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/posts\/1212"}],"collection":[{"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/comments?post=1212"}],"version-history":[{"count":1,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/posts\/1212\/revisions"}],"predecessor-version":[{"id":36335,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/posts\/1212\/revisions\/36335"}],"wp:attachment":[{"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/media?parent=1212"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/categories?post=1212"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/tags?post=1212"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}