{"id":67929,"date":"2025-11-20T20:15:00","date_gmt":"2025-11-20T20:15:00","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=67929"},"modified":"2025-11-21T18:27:38","modified_gmt":"2025-11-21T18:27:38","slug":"extreme-turbulence-over-lower-michigan","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/67929","title":{"rendered":"Extreme turbulence over Lower Michigan"},"content":{"rendered":"<p><div style=\"width: 3004px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2025\/11\/251120_goes19_waterVapor_mogProbability_pireps.mp4\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2025\/11\/251120_1500utc_goes19_waterVapor_mogProbability_pirep.png\" width=\"2994\" height=\"1716\" \/><\/a><p class=\"wp-caption-text\">GOES-19 Water Vapor imagery with contours of Moderate Or Greater (MOG) Turbulence Probability and plots of Pilot Reports of turbulence, from 1150-1900 UTC on 20 November [click to play MP4 animation]<\/p><\/div>10-minute Full Disk scan GOES-19 <em>(GOES-East)<\/em> Water Vapor images centered over the southern Great Lakes <em><strong>(above)<\/strong><\/em> included contours of Moderate Or Greater (MOG) <a href=\"https:\/\/rammb2.cira.colostate.edu\/wp-content\/uploads\/2021\/01\/QuickGuide_GOESR_TurbulenceDetection.pdf\"><strong>Turbulence Probability<\/strong><\/a> (yellow contour = 40%) and Pilot Reports of Turbulence on <a href=\"https:\/\/www.wpc.ncep.noaa.gov\/dailywxmap\/index_20251120.html\"><strong>20 November 2025<\/strong><\/a>. The yellow 40% MOG contour progressed eastward across the southern Great Lakes and toward the Northeast US during the day &#8212; note the appearance of one report of Extreme Turbulence over the southwest portion of Lower Michigan around <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2025\/11\/251120_1500utc_goes19_waterVapor_mogProbability_pirep.png\"><strong>1500 UTC<\/strong><\/a>.<\/p>\n<p>Products from the <a href=\"https:\/\/aviationweather.gov\"><strong>Aviation Weather Center<\/strong><\/a> allowed cursor samples of two closely-spaced Pilot Reports of Extreme Turbulence &#8212; apparently from the same aircraft, as it was flying southeast <em><strong>(below)<\/strong><\/em>.<\/p>\n<p><div style=\"width: 3004px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2025\/11\/251120_1450utc_pirep.png\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2025\/11\/251120_1450utc_pirep.png\" width=\"2994\" height=\"1716\" \/><\/a><p class=\"wp-caption-text\">Cursor sample of a Pilot Report of Extreme Turbulence at 1450 UTC on 20 November [click to enlarge]<\/p><\/div>The second encounter of Extreme Turbulence occurred at 1505 UTC, causing minor injuries <em><strong>(below)<\/strong><\/em>.<\/p>\n<p><div style=\"width: 3004px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2025\/11\/251120_1505utc_pirep.png\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2025\/11\/251120_1505utc_pirep.png\" width=\"2994\" height=\"1716\" \/><\/a><p class=\"wp-caption-text\">Cursor sample of a Pilot Report of Extreme Turbulence (causing minor injuries) at 1505 UTC on 20 November [click to enlarge]<\/p><\/div>A toggle between the 1501 UTC GOES-19 Water Vapor image and a 3-hour NAM40 model forecast of 250 hPa winds valid at 1500 UTC <em><strong>(below)<\/strong><\/em> indicated that the initial 1450 UTC Pilot Report of Extreme Turbulence (red symbol) occurred in an area of strong speed shear just north of the axis of a 150-knot jet streak (shades of orange). There was also the characteristic dry\/moist gradient in Water Vapor imagery along the axis of the upper-tropospheric jet streak.<\/p>\n<p><div style=\"width: 3004px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2025\/11\/251120_1501utc_goes19_waterVapor_pireps_250hpa_windSpeed_anim.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2025\/11\/251120_1501utc_goes19_waterVapor_pireps_250hpa_windSpeed_anim.gif\" width=\"2994\" height=\"1672\" \/><\/a><p class=\"wp-caption-text\">Toggle between the GOES-19 Water Vapor image at 1501 UTC and a 3-hour NAM40 model forecast of 250 hPa Wind Speed valid at 1500 UTC on 20 November; the 1450 UTC Pilot Report of Extreme Turbulence is plotted in red [click to enlarge]<\/p><\/div>An animation of 5-minute CONUS Sector GOES-19 Water Vapor images with Pilot Reports of Turbulence is shown below.<\/p>\n<p><div style=\"width: 3004px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2025\/11\/251120_goes19_waterVapor_pireps.mp4\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2025\/11\/251120_1501utc_goes19_waterVapor_pireps.png\" width=\"2994\" height=\"1672\" \/><\/a><p class=\"wp-caption-text\">5-minute GOES-19 Water Vapor images with plots of Pilot Reports of turbulence, from 1121-2001 UTC on 20 November [click to play MP4 animation]<\/p><\/div>Thanks to Rick DiMaio for alerting us to this case!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>10-minute Full Disk scan GOES-19 (GOES-East) Water Vapor images centered over the southern Great Lakes (above) included contours of Moderate Or Greater (MOG) Turbulence Probability (yellow contour = 40%) and Pilot Reports of Turbulence on 20 November 2025. The yellow 40% MOG contour progressed eastward across the southern Great Lakes and toward the Northeast US [&hellip;]<\/p>\n","protected":false},"author":18,"featured_media":67930,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[21,159],"tags":[],"class_list":["post-67929","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aviation","category-goes-19"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/67929","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=67929"}],"version-history":[{"count":13,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/67929\/revisions"}],"predecessor-version":[{"id":67959,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/67929\/revisions\/67959"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/67930"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=67929"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=67929"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=67929"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}