{"id":31329,"date":"2019-01-11T23:59:23","date_gmt":"2019-01-11T23:59:23","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=31329"},"modified":"2019-01-14T14:16:45","modified_gmt":"2019-01-14T14:16:45","slug":"lake-effect-clouds-downwind-of-fort-peck-lake-montana","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/31329","title":{"rendered":"Lake effect clouds downwind of Fort Peck Lake, Montana"},"content":{"rendered":"
\"GOES-17<\/a>

GOES-17 (left)<\/em> and GOES-16 (right)<\/em> “Red” Visible (0.64 \u00b5m, top)<\/em> and Shortwave Infrared (3.9 \u00b5m, bottom)<\/em> images [click to play animation | MP4<\/strong><\/a>]<\/p><\/div>\n

* GOES-17 images shown here are preliminary and non-operational *<\/em><\/p>\n

A comparison of GOES-17 (soon to become GOES-West)<\/em> and GOES-16 (GOES-East)<\/em> “Red” Visible (0.64 \u00b5m<\/strong><\/a>) and Shortwave Infrared (3.9 \u00b5m<\/strong><\/a>) images (above)<\/strong><\/em> revealed a plume of lake effect clouds streaming south of Fort Peck Lake<\/strong><\/a> in northeastern Montana on 11 January 2019. As a cold front moved south-southwestward across the region (surface analyses<\/strong><\/a>), surface winds shifted to northerly at Glasgow KGGW<\/strong><\/a> which brought a flow of colder air across the still-unfrozen lake. Note that before sunrise the initial formation of the lake effect clouds could be seen on Shortwave Infrared imagery — and after sunrise, the feature appeared progressively warmer (shades of orange)<\/em> on 3.9 \u00b5m images as the supercooled water droplets at the cloud top reflected increasing amounts of incoming solar radiation.<\/p>\n

An Aqua MODIS Sea Surface Temperature product at 1942 UTC (below)<\/strong><\/em> showed that mid-lake water temperatures south of Glasgow were as warm as 36\u00baF (lighter shades of blue)<\/em> — significantly warmer than Glasgow’s early morning surface air temperatures that were as cold as 17\u00baF at 14 UTC.<\/p>\n

\"Aqua<\/a>

Aqua MODIS Sea Surface Temperature product [click to enlarge]<\/p><\/div>A comparison of the Sea Surface Temperature product with the corresponding Aqua MODIS Visible (0.65 \u00b5m), Near-Infrared “Snow\/Ice” (1.61 \u00b5m), Shortwave Infrared (3.9 \u00b5m) and Infrared Window (11.0 \u00b5m) images at 1942 UTC (below)<\/strong><\/em> showed the lake effect cloud plume as well as a patch of snow cover northeast of the lake — snow absorbs radiation at the 1.61 \u00b5m wavelength, making it appear dark<\/em> on the “Snow\/Ice” image.<\/p>\n

\"Aqua<\/a>

Aqua MODIS Sea Surface Temperature, Visible (0.65 \u00b5m),<\/em> Near-Infrared “Snow\/Ice” (1.61 \u00b5m),<\/em> Shortwave Infrared (3.9 \u00b5m)<\/em> and Infrared Window (11.0 \u00b5m)<\/em> images [click to enlarge]<\/p><\/div>Terra and Aqua MODIS True Color and False Color Red-Green-Blue (RGB) images viewed using RealEarth<\/strong><\/a> (below)<\/strong><\/em> showed that parts of the Missouri River upstream (to the west of) of Fort Peck Lake — in the area of the UL Bend National Wildlife Refuge — were beginning to freeze (ice and snow appear as shades of cyan on the False Color RGB images).<\/p>\n

\"Terra<\/a>

Terra and Aqua MODIS True Color and False Color RGB images [click to enlarge]<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

* GOES-17 images shown here are preliminary and non-operational * A comparison of GOES-17 (soon to become GOES-West) and GOES-16 (GOES-East) “Red” Visible (0.64 \u00b5m) and Shortwave Infrared (3.9 \u00b5m) images (above) revealed a plume of lake effect clouds streaming south of Fort Peck Lake in northeastern Montana on 11 January 2019. As a cold […]<\/p>\n","protected":false},"author":18,"featured_media":31338,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[70,74,80,12,53,45,71],"tags":[],"class_list":["post-31329","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aqua","category-goes-16","category-goes-17","category-modis","category-real-earth","category-redgreenblue-rgb-images","category-terra"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/31329","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\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/comments?post=31329"}],"version-history":[{"count":9,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/31329\/revisions"}],"predecessor-version":[{"id":31341,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/31329\/revisions\/31341"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/31338"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=31329"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=31329"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=31329"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}