{"id":49972,"date":"2023-01-22T22:46:00","date_gmt":"2023-01-22T22:46:00","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=49972"},"modified":"2023-01-24T15:22:32","modified_gmt":"2023-01-24T15:22:32","slug":"noaa-20-detection-of-flooding-over-california","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/49972","title":{"rendered":"NOAA-20 detection of flooding over California"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/01\/thumbnail_VIIRS_TrueFalseColor_Flood_Detection_CA_Flooding_22_Jan_2023steptoggle.gif\"><img loading=\"lazy\" decoding=\"async\" width=\"1137\" height=\"1060\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/01\/thumbnail_VIIRS_TrueFalseColor_Flood_Detection_CA_Flooding_22_Jan_2023steptoggle.gif\" alt=\"\" class=\"wp-image-49973\"\/><\/a><figcaption class=\"wp-element-caption\">NOAA-20 VIIRS True Color, False Color, and Flood Detection, 2031 UTC on 22 January 2023 (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n<p>The <a href=\"https:\/\/cimss.ssec.wisc.edu\/cspp\/\">Community Software Processing Package (CSPP)<\/a> includes Flood Detection algorithms that can be applied to VIIRS data at Direct Broadcast sites (such as at CIMSS).  The <a href=\"https:\/\/www.ssec.wisc.edu\/datacenter\/polar_orbit_tracks\/data\/JPSS-1\/2023\/2023_01_22_022\/NA.gif\">daytime NOAA-20 orbit over California<\/a> on 22 January 2023 overflew mostly clear skies, resulting in the <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/01\/thumbnail_VIIRS_True_Color_CA_Flooding_22_Jan_2023logo.jpg\">True Color<\/a> and <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/01\/thumbnail_VIIRS_False_Color_CA_Flooding_22_Jan_2023logo.jpg\">False Color<\/a> imagery shown above, and the <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/01\/thumbnail_VIIRS_Flood_Detection_CA_Flooding_22_Jan_2023_keylogo.jpg\">diagnosed regions of floods<\/a>, mainly in the Sacramento and San Joaquin River basins.  Note that flooding in these two river basins can also be a result of agricultural diversions to support rice farming.  So a good question is:  Was the water put there intentionally &#8212; or did it flood?  The modest flood signal in the Salinas River basin (south and east of Salinas) is more likely actual flooding.<\/p>\n\n\n\n<p>These images were created using geotiff images from CSPP that were inserted into Google Earth and are courtesy Kathy Strabala, SSEC\/CIMSS.    VIIRS flood imagery (including imagery displayed in concert with ABI and AHI data) are also available <a href=\"https:\/\/www.ssec.wisc.edu\/flood-map-demo\/flood-products\/\">here<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Community Software Processing Package (CSPP) includes Flood Detection algorithms that can be applied to VIIRS data at Direct Broadcast sites (such as at CIMSS). The daytime NOAA-20 orbit over California on 22 January 2023 overflew mostly clear skies, resulting in the True Color and False Color imagery shown above, and the diagnosed regions of [&hellip;]<\/p>\n","protected":false},"author":19,"featured_media":49974,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[16,78,48],"tags":[],"class_list":["post-49972","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-heavy-rain-flooding","category-noaa-20","category-viirs"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/49972","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=49972"}],"version-history":[{"count":7,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/49972\/revisions"}],"predecessor-version":[{"id":49987,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/49972\/revisions\/49987"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/49974"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=49972"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=49972"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=49972"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}