{"id":14795,"date":"2014-01-16T23:59:03","date_gmt":"2014-01-16T23:59:03","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=14795"},"modified":"2014-01-18T01:16:51","modified_gmt":"2014-01-18T01:16:51","slug":"severe-turbulence-over-the-mid-atlantic-and-northeast-regions-of-the-us","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/14795","title":{"rendered":"Severe turbulence over the Mid-Atlantic and Northeast regions of the US"},"content":{"rendered":"

\"GOES-13<\/a>

GOES-13 6.5 \u00c2\u00b5m water vapor channel images [click to play animation]<\/p><\/div>United Airlines Flight 89 enroute from Newark, New Jersey to Beijing, China encountered severe turbulence at an altitude of 33,000 feet over Vermont (pilot report<\/strong><\/a>) around 18:31 UTC on 16 January 2014<\/strong><\/a>, which injured 5 flight attendants and forced the flight to return to Newark where the injured crew members were taken to local hospitals for evaluation. AWIPS images of 4-km resolution GOES-13 6.5 \u00c2\u00b5m water vapor channel data (above; click image to play animation)<\/strong><\/em> showed that a large baroclinic leaf signature was rapidly developing over the northeastern US and southeastern Canada during the day.<\/p>\n

\"Suomi<\/a>

Suomi NPP VIIRS 0.64 \u00c2\u00b5m visible channel images, with pilot reports of turbulence<\/p><\/div>\n

17:12 UTC images of 1-km resolution Suomi NPP VIIRS 0.64 \u00c2\u00b5m visible channel data (above)<\/strong><\/em> and 11.45 \u00c2\u00b5m IR channel data (below)<\/strong><\/em> displayed evidence of “transverse banding” structures along portions of the cloud top of the baroclinic leaf feature — such transverse banding is often associated with turbulence. Pilot reports of turbulence for the hours ending at 17, 18, and 19 UTC are also plotted on the VIIRS images; over this region there were 5 reports of severe turbulence within this 3 hour period.<\/p>\n

\"Suomi<\/a>

Suomi NPP VIIRS 11.45 \u00c2\u00b5m IR channel image, with pilot reports of turbulence<\/p><\/div>\n

GOES-13 water vapor images with overlays of CRAS model<\/strong><\/a> 250 hPa wind speed isotachs (below)<\/strong><\/em> showed that there was a strong (150-160 knot)<\/em> upper level jet streak along the back (western)<\/em> edge of the baroclinic leaf during the 12 UTC to 21 UTC period. At 18 UTC, the 2 pilot reports of severe turbulence were located in the vicinity of the left entrance region of the jet streak — an area generally expected to have strong downward vertical velocities forced by ageostrophic circulations near the altitude of the jet streak.<\/p>\n

\"GOES-13<\/a>

GOES-13 water vapor images, CRAS 250 hPa isotachs, and pilot reports of turbulence<\/p><\/div>\n

GOES-13 water vapor images with overlays of CRAS model pressure of the PV1.5 surface (below)<\/strong><\/em> — generally thought of as representing the dynamic tropopause — indicated that the tropopause was as low as 500-600 hPa within the narrow warm\/dry band just west of the back edge of the baroclinic leaf during the 12 UTC – 21 UTC time period.<\/p>\n

\"GOES-13<\/a>

GOES-13 water vapor images, CRAS PV1.5 pressure, and pilot reports of turbulence<\/p><\/div>\n

An automated Turbulence Risk product (below)<\/strong><\/em> also indicated that tropopause folding (blue)<\/em> was occurring along the western edge of the baroclinic leaf, bringing the tropopause as low as 22,500 feet. The yellow ‘+’ symbols represent a portion of the flight track of United Airlines Flight 89.<\/p>\n

\"Turbulence<\/a>

Turbulence risk product<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

United Airlines Flight 89 enroute from Newark, New Jersey to Beijing, China encountered severe turbulence at an altitude of 33,000 feet over Vermont (pilot report) around 18:31 UTC on 16 January 2014, which injured 5 flight attendants and forced the flight to return to Newark where the injured crew members were taken to local hospitals […]<\/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":[21,11,49,48],"tags":[],"class_list":["post-14795","post","type-post","status-publish","format-standard","hentry","category-aviation","category-goes-13","category-suomi_npp","category-viirs"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/14795","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=14795"}],"version-history":[{"count":7,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/14795\/revisions"}],"predecessor-version":[{"id":14802,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/14795\/revisions\/14802"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=14795"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=14795"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=14795"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}