{"id":27154,"date":"2018-02-26T22:28:13","date_gmt":"2018-02-26T22:28:13","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=27154"},"modified":"2018-02-28T23:03:46","modified_gmt":"2018-02-28T23:03:46","slug":"flooding-in-the-midwest-and-lower-ohio-river-valley","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/27154","title":{"rendered":"Flooding in the Midwest and lower Ohio River Valley"},"content":{"rendered":"
\"\"<\/a>

GOES-16 0.86 \u00b5m “Veggie” Band Imagery at 1902 UTC on 12 and 26 February 2018 (Click to enlarge)<\/p><\/div>\n

Solar radiation at 0.86\u00a0\u00b5m is strongly absorbed by water on the surface, but reflected by land. There is therefore a big contrast in GOES-16 “Veggie” Band imagery between rivers and adjacent land, and that contrast difference can easily identify regions of inundation. The toggle above compares imagery from 26 February 2018<\/a> and from 12 February 2018<\/a> over the lower Ohio River Valley. Significant widening of many waterways is apparent in the 0.86\u00a0\u00b5m imagery on 26 February, especially over southern Indiana, a result of both snow melt and abundant precipitation in the past 7 days, shown below (from this link<\/a>). This has caused many stream gauges to show Moderate (Red gauges) to Major (Purple Gauges) flooding (image from this link<\/a>), also shown below.\u00a0 A zoomed-in image over northern Indiana, at bottom, shows the major flooding along the Kankakee River<\/a>.<\/p>\n

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Observed precipitation for the 7 days ending at 1200 UTC on 26 February 2018 (Click to enlarge)<\/p><\/div>\n

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Stream Gauge Observations at 1200 UTC on 26 February 2018 (Click to enlarge)<\/p><\/div>\n

\"\"<\/a>

GOES-16 0.86 \u00b5m “Veggie” Band Imagery at 1902 UTC on 26 February 2018 (Click to enlarge). Green Arrows highlight the Kankakee River, in flood.<\/p><\/div>\n


\n=============== Added, 27 February 2018 ===================<\/center>Suomi NPP’s Flood Product, produced via CSPP<\/a> using data from a Direct Broadcast site (at UW-Madison) is shown below. Flooded regions in the lower Ohio River\/Mississippi River Valley and surroundings are indicated by shading in yellow to red.<\/p>\n
\"\"<\/a>

Suomi NPP Flood Product, 1923 UTC on 26 February 2018 (Click to enlarge)<\/p><\/div>\n

Some of these areas of river flooding could also be seen in a comparison of Suomi NPP VIIRS True-color and False-color Red-Green-Blue RGB images (below) — the False-color image uses the Near-Infrared 2.2 \u00b5m and 0.86 \u00b5m bands for the Red and Green contributions, and highlights water as shades of blue.<\/p>\n

\"Suomi<\/a>

Suomi NPP VIIRS True-color and False-color RGB images [click to enlarge]<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

Solar radiation at 0.86\u00a0\u00b5m is strongly absorbed by water on the surface, but reflected by land. There is therefore a big contrast in GOES-16 “Veggie” Band imagery between rivers and adjacent land, and that contrast difference can easily identify regions of inundation. The toggle above compares imagery from 26 February 2018 and from 12 February […]<\/p>\n","protected":false},"author":19,"featured_media":27157,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[74,16,45,49,48],"tags":[],"class_list":["post-27154","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-goes-16","category-heavy-rain-flooding","category-redgreenblue-rgb-images","category-suomi_npp","category-viirs"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/27154","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=27154"}],"version-history":[{"count":13,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/27154\/revisions"}],"predecessor-version":[{"id":27178,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/27154\/revisions\/27178"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/27157"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=27154"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=27154"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=27154"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}