{"id":26745,"date":"2018-01-12T23:59:32","date_gmt":"2018-01-12T23:59:32","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=26745"},"modified":"2018-01-16T14:52:45","modified_gmt":"2018-01-16T14:52:45","slug":"severe-turbulence-over-hawaii","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/26745","title":{"rendered":"Severe turbulence over Hawai’i"},"content":{"rendered":"

\"GOES-15<\/a>

GOES-15 Water Vapor (6.5 \u00b5m)<\/em> images, with hourly pilot reports of turbulence [click to play animation]<\/p><\/div>Numerous pilot reports of moderate to severe turbulence were received over the Hawai’i area on 12 January 2018 — and GOES-15 (GOES-West)<\/em> Water Vapor (6.5 \u00b5m) images (above;<\/strong> also available as an MP4<\/a>)<\/strong><\/em> showed the development of a quasi-stationary gravity wave train over the northwestern portion of the island chain which appeared to be associated with many of these pilot reports.<\/p>\n

HNL UA \/OV 2115N16010W\/TM 2241\/FL320\/TP B767\/TB CONT MOD TURB<\/strong><\/p>\n

HNL UUA \/OV 2115N16048W\/TM 2255\/FL340\/TP H\/B747\/TB MOD-SEV TURB<\/strong><\/p>\n

HNL UUA \/OV BOARD\/TM 2350\/FL370\/TP H\/B772\/TB SEVERE TURB<\/strong><\/p>\n

PHNL UUA \/OV 2443N 15516W \/TM 2358 \/FL370 \/TP B737 \/TB SEV<\/strong> 370 \/RM ZOA CWSU AWC-WEB<\/p>\n

In spite of the large satellite viewing angle, these waves were also very evident on Himawari-8 Lower-level (7.3 \u00b5m), Mid-level (6.9 \u00b5m) and Upper-level (6.2 \u00b5m) Water Vapor images (below; <\/strong>also available as an MP4<\/a>)<\/strong><\/em>. The 3 Water Vapor bands on the Himawari AHI<\/strong><\/a> are nearly identical to the 3 Water Vapor bands on the GOES-R series ABI<\/strong><\/a>.<\/p>\n

\"Himawari-8<\/a>

Himawari-8 Low-level (7.3 \u00b5m, left),<\/em> Mid-level (6.9 \u00b5m, center)<\/em> and Upper-level (6.2 \u00b5m, right)<\/em> Water Vapor images, with hourly pilot reports of turbulence [click to play animation]<\/p><\/div>A toggle between 1-km resolution Terra MODIS Water Vapor (6.7 \u00b5m), Infrared Window (11.0 \u00b5m) and 250-meter resolution true-color Red-Green-Blue RGB images at 2106 UTC on 12 January (below)<\/strong> <\/em>showed that no high-altitude clouds were associated with the gravity wave features — thus, these aircraft encounters were examples of Clear Air Turbulence (CAT).<\/p>\n

\"Terra<\/a>

Terra MODIS Water Vapor (6.7 \u00b5m), Infrared Window (11.0 \u00b5m) and true-color RGB images [click to enlarge]<\/p><\/div>A color-enhanced version of the Aqua MODIS Water Vapor (6.7 \u00b5m) image at 0014 UTC on 13 January is shown below (courtesy of Jordan Gerth, CIMSS).<\/p>\n

\"\"<\/a><\/p>\n

An AWIPS screen capture (below, <\/strong>courtesy of Robert Bohlin, NWS Honolulu and Jordan Gerth, CIMSS)<\/strong><\/em> displays a High Pass filter product<\/strong><\/a> along with the 3 individual Himawari-8 Water Vapor band images at 0120 UTC on 13 January.<\/p>\n

\"Upper-level<\/a>

Himawari-8 High Pass filter product (6.9 \u00b5m, upper left),<\/em> Upper-level Water Vapor (6.2 \u00b5m, upper right),<\/em> Mid-level Water Vapor (6.9 \u00b5m, lower left)<\/em> and Lower-level Water Vapor (7.3 \u00b5m, lower right)<\/em> images [click to enlarge]<\/p><\/div>It bears mention that the rawinsonde data from Lihue, Hawai’i at 0000 UTC on 13 January (below)<\/strong><\/em> indicated significant wind shear (both speed and directional) within the 200-300 hPa layer (text listing<\/strong><\/a>) — the layer in which many of the turbulence reports were found.<\/p>\n

\"Rawinsonde<\/a>

Rawinsonde data from Lihue, Hawai’i at 00 UTC on 13 January [click to enlarge]<\/p><\/div>The packet of gravity waves was directly over Lihue (red asterisk)<\/em> at that time (below)<\/strong><\/em>.<\/p>\n

\"GOES-15<\/a>

GOES-15 Water Vapor (6.5 \u00b5m)<\/em> image at 0000 UTC on 13 January, with pilot reports of turbulence plotted. The red asterisk denotes the location of Lihue [click to enlarge]<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

Numerous pilot reports of moderate to severe turbulence were received over the Hawai’i area on 12 January 2018 — and GOES-15 (GOES-West) Water Vapor (6.5 \u00b5m) images (above; also available as an MP4) showed the development of a quasi-stationary gravity wave train over the northwestern portion of the island chain which appeared to be associated […]<\/p>\n","protected":false},"author":18,"featured_media":26749,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[70,21,43,62,12,71],"tags":[],"class_list":["post-26745","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aqua","category-aviation","category-goes-15","category-himawari-8","category-modis","category-terra"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/26745","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=26745"}],"version-history":[{"count":13,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/26745\/revisions"}],"predecessor-version":[{"id":26761,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/26745\/revisions\/26761"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/26749"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=26745"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=26745"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=26745"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}