{"id":46722,"date":"2022-06-07T18:55:38","date_gmt":"2022-06-07T18:55:38","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=46722"},"modified":"2022-06-07T19:01:56","modified_gmt":"2022-06-07T19:01:56","slug":"goes-17-ifr-low-ifr-and-mvfr-probability-fields-over-south-alaska","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/46722","title":{"rendered":"GOES-17 IFR, Low IFR, and MVFR Probability fields over South Alaska"},"content":{"rendered":"\n<p>IFR (Instrument Flight Rules) Probability <a href=\"https:\/\/fusedfog.ssec.wisc.edu\/2020\/08\/14\/the-relationship-between-mvfr-probability-ifr-probability-and-low-ifr-probability\/\">estimates the likelihood that IFR conditions<\/a> are occurring by fusing GOES-17 satellite data with model output. The satellite-derived products give output of low IFR, (LIFR), IFR, and Marginal Visual Flight Rules (MVFR). In aviation, the <a href=\"https:\/\/www.thinkaviation.net\/levels-of-vfr-ifr-explained\/\">difference between these classifications<\/a> is generally:<\/p>\n\n\n\n<p><br><strong>Low Instrument Flight Rules (LIFR):<\/strong> Ceilings are less than 500 feet above ground level and\/or visibility is less than 1 mile.<\/p>\n\n\n\n<p><br><strong>Instrument Flight Rules (IFR):<\/strong> Ceilings are 500 to 1,000 feet and\/or visibility 1 to 3 miles.<\/p>\n\n\n\n<p><br><strong>Marginal VFR (MVFR):<\/strong> Ceilings are 1,000 to 3,000 feet and\/or visibility is 3 to 5 miles.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2022\/06\/SAlaskaIFRzoom.gif\"><img loading=\"lazy\" decoding=\"async\" width=\"1580\" height=\"1082\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2022\/06\/SAlaskaIFRzoom.gif\" alt=\"\" class=\"wp-image-46723\" \/><\/a><figcaption>An example of GOES-17 IFR, Low IFR, and MVFR Probability fields along with the red visible channel (0.64 microns) over South Alaska on 07-June-2022 from 16:00 to 17:50UTC. Note how flight rules probability changes as cloud cover (seen from the visible imagery in the bottom right panel) changes [click to enlarge].<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>IFR (Instrument Flight Rules) Probability estimates the likelihood that IFR conditions are occurring by fusing GOES-17 satellite data with model output. The satellite-derived products give output of low IFR, (LIFR), IFR, and Marginal Visual Flight Rules (MVFR). In aviation, the difference between these classifications is generally: Low Instrument Flight Rules (LIFR): Ceilings are less than [&hellip;]<\/p>\n","protected":false},"author":27,"featured_media":46725,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[21,80],"tags":[],"class_list":["post-46722","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aviation","category-goes-17"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/46722","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\/27"}],"replies":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/comments?post=46722"}],"version-history":[{"count":5,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/46722\/revisions"}],"predecessor-version":[{"id":46730,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/46722\/revisions\/46730"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/46725"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=46722"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=46722"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=46722"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}