{"id":36818,"date":"2020-05-23T20:03:23","date_gmt":"2020-05-23T20:03:23","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=36818"},"modified":"2020-05-24T13:45:20","modified_gmt":"2020-05-24T13:45:20","slug":"using-nucaps-to-help-nowcast-midwest-convection","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/36818","title":{"rendered":"Using NUCAPS to help nowcast Midwest convection"},"content":{"rendered":"
\"\"<\/a>

GOES-16 ABI Band 2 (0.64 \u00b5m) visible imagery at 1821 UTC 23 May 2020 (Click to enlarge)<\/p><\/div>\n

The NOAA Storm Prediction Center’s Convective Outlook (graphic<\/a>) from 1630 UTC 23 May 2020 shows an enhanced risk of Severe Thunderstorms in northern Illinois with a sharp cutoff in probabilities to the north in southern Wisconsin. The imagery above shows the GOES-16 ABI Band 2 (0.64 \u00b5m) visible imagery (click here<\/a> for Band 13 (10.3 \u00b5m) Infrared Imagery), and it shows convection over northern Illinois\/southern Wisconsin ahead of an obvious vorticity center in Iowa. How far north will the convection build?<\/p>\n

This question can be answered by considering lower-tropospheric (900-700)<\/a> and mid-tropospheric (850-500)<\/a> lapse rates diagnosed from the NUCAPS Profiles produced from the NOAA-20 pass over the Upper Midwest at ~1818 UTC (NOAA-20 orbit for this day shown here<\/a>); these data were available within AWIPS by 1915 UTC!\u00a0 <\/p>\n

The toggle below shows ABI Bands 2 and 13 (0.64 \u00b5m and 10.3 \u00b5m, respectively) as well as the lapse rates. The Lower Tropospheric lapse rates show a north-south gradient in stability, with air that is more stable over Wisconsin; convection over Illinois should weaken as it moves north. Mid-tropospheric lapse rates show a similar gradient in stability albeit less pronounced. (Click here <\/a>to view the lower-tropospheric lapse rates overlain with NUCAPS sounding availability points from AWIPS, color-coded to show whether or not Infrared and\/or microwave retrievals converged. Over southwest Wisconsin\/northwest Illinois, perhaps you can argue that the gradient is influenced by soundings that did not converge; that argument would be harder to make over northcentral\/northeast Illinois and southcentral\/southeast Wisconsin).<\/p>\n

\"\"<\/a>

GOES-16 ABI Bands 2 (0.64) and 13 (10.3) at 1821 UTC and Lower- and Mid-Tropospheric Layer Lapse Rates (900-700 and 850-500 mb, respectively) at nominal times of 1818 UTC over the upper Midwest (Click to enlarge)<\/p><\/div>\n

This post is to remind you that satellite-derived retrieval data (independent of model data) is available in AWIPS in a timely manner to help you diagnose the thermodynamic state of the atmosphere. (Added: Storm reports for this event are here<\/a>. Severe weather did cross into Wisconsin but was very close to the Illinois border).<\/p>\n","protected":false},"excerpt":{"rendered":"

The NOAA Storm Prediction Center’s Convective Outlook (graphic) from 1630 UTC 23 May 2020 shows an enhanced risk of Severe Thunderstorms in northern Illinois with a sharp cutoff in probabilities to the north in southern Wisconsin. The imagery above shows the GOES-16 ABI Band 2 (0.64 \u00b5m) visible imagery (click here for Band 13 (10.3 […]<\/p>\n","protected":false},"author":19,"featured_media":36821,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[74,78,83,39],"tags":[],"class_list":["post-36818","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-goes-16","category-noaa-20","category-nucaps","category-training"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/36818","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=36818"}],"version-history":[{"count":9,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/36818\/revisions"}],"predecessor-version":[{"id":36845,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/36818\/revisions\/36845"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/36821"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=36818"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=36818"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=36818"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}