{"id":13456,"date":"2013-07-20T23:59:19","date_gmt":"2013-07-20T23:59:19","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=13456"},"modified":"2013-07-21T20:51:03","modified_gmt":"2013-07-21T20:51:03","slug":"mesoscale-convective-vortex-mcv-in-southern-california","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/13456","title":{"rendered":"Mesoscale Convective Vortex (MCV) in southern California"},"content":{"rendered":"
\"Suomi<\/a>

Suomi NPP VIIRS 0,7 \u00c2\u00b5m Day\/Night Band and 11.45 \u00c2\u00b5m IR channel images<\/p><\/div>\n

A comparison of AWIPS images of Suomi NPP VIIRS 0.7 \u00c2\u00b5m Day\/Night Band and 11.45 \u00c2\u00b5m IR channel data (above)<\/strong><\/em> showed a large mesoscale convective system in southwestern Arizona at 08:40 UTC or 2:40 am local time on 20 July 2013<\/strong><\/a>. With ample illumination from the Moon (which was in the Waxing Gibbous phase, at 96% of full),<\/em> the “visible image at night” capability of the VIIRS Day\/Night Band image allowed shadowing from overshooting thunderstorm tops to be clearly seen; the coldest cloud-top IR brightness temperature of the overshooting tops was -83\u00c2\u00ba C<\/strong> (violet color enhancement)<\/em>. In addition, numerous cloud-to-ground lightning strikes were associated with the MCS at that time. A few hours earlier, this storm had produced reports of wind damage in the Phoenix area just after 05 UTC (SPC Storm Reports<\/strong><\/a>).<\/p>\n

With the arrival of daylight, McIDAS images of GOES-15 (GOES-West)<\/em> 0.63 \u00c2\u00b5m visible channel data (below; click image to play animation)<\/strong><\/em> revealed the emergence of a well-defined and relatively compact Mesoscale Convective Vortex (MCV) that continued to move westward across southern California during the day. The MCV also played a role in helping to iniitate additional convection in areas such as the San Bernadino Mountains of southern California.<\/p>\n

\"GOES-15<\/a>

GOES-15 0.63 \u00c2\u00b5m visible channel images (click image to play animation)<\/p><\/div>\n

A comparison of Suomi NPP VIIRS 0.64 \u00c2\u00b5m visible channel and 11.45 \u00c2\u00b5m IR channel images at 20:05 UTC (below)<\/strong><\/em> showed that the clouds associated with the MCV were primarily low to mid-level clouds, which exhibited IR brightness temperatures that were generally warmer than -20\u00c2\u00ba C.<\/p>\n

\"Suomi<\/a>

Suomi NPP VIIRS 0.64 \u00c2\u00b5m visible channel and 11.45 \u00c2\u00b5m IR channel images<\/p><\/div>\n

For aditional information on MCVs, see the VISIT lesson “Mesoscale Convective Vortices<\/strong><\/a>“.\u00c2\u00a0For additional information on VIIRS imagery, see the VISIT lesson “VIIRS Satellite Imagery in AWIPS<\/strong><\/a>“.<\/p>\n","protected":false},"excerpt":{"rendered":"

A comparison of AWIPS images of Suomi NPP VIIRS 0.7 \u00c2\u00b5m Day\/Night Band and 11.45 \u00c2\u00b5m IR channel data (above) showed a large mesoscale convective system in southwestern Arizona at 08:40 UTC or 2:40 am local time on 20 July 2013. With ample illumination from the Moon (which was in the Waxing Gibbous phase, at […]<\/p>\n","protected":false},"author":18,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[43,30,3,49,39,48],"tags":[],"class_list":["post-13456","post","type-post","status-publish","format-standard","hentry","category-goes-15","category-lightning","category-severe-convection","category-suomi_npp","category-training","category-viirs"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/13456","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=13456"}],"version-history":[{"count":12,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/13456\/revisions"}],"predecessor-version":[{"id":13458,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/13456\/revisions\/13458"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=13456"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=13456"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=13456"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}