{"id":817,"date":"2010-11-17T18:34:50","date_gmt":"2010-11-17T23:34:50","guid":{"rendered":"https:\/\/inside.nssl.noaa.gov\/nsslnews\/?p=817"},"modified":"2010-11-17T18:34:50","modified_gmt":"2010-11-17T23:34:50","slug":"phased-array-radar-captures-evolution-of-a-tornado-at-close-range","status":"publish","type":"post","link":"https:\/\/inside.nssl.noaa.gov\/nsslnews\/2010\/11\/phased-array-radar-captures-evolution-of-a-tornado-at-close-range\/","title":{"rendered":"Phased array radar captures evolution of a tornado at close range"},"content":{"rendered":"<figure id=\"attachment_835\" aria-describedby=\"caption-attachment-835\" style=\"width: 216px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/inside.nssl.noaa.gov\/nsslnews\/2010\/11\/phased-array-radar-captures-evolution-of-a-tornado-at-close-range\/par-vs-ktlx-torn-refl-2\/\" rel=\"attachment wp-att-835\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-835\" title=\"PAR vs KTLX torn refl\" src=\"https:\/\/inside.nssl.noaa.gov\/nsslnews\/wp-content\/uploads\/sites\/21\/2010\/11\/PAR-vs-KTLX-torn-refl1.jpg\" alt=\"\" width=\"216\" height=\"432\" srcset=\"https:\/\/inside.nssl.noaa.gov\/nsslnews\/wp-content\/uploads\/sites\/21\/2010\/11\/PAR-vs-KTLX-torn-refl1.jpg 216w, https:\/\/inside.nssl.noaa.gov\/nsslnews\/wp-content\/uploads\/sites\/21\/2010\/11\/PAR-vs-KTLX-torn-refl1-100x200.jpg 100w\" sizes=\"auto, (max-width: 767px) 100vw, (max-width: 1200px) 60vw, 720px\" \/><\/a><figcaption id=\"caption-attachment-835\" class=\"wp-caption-text\">Phased array radar scan verses WSR-88D scan of rotation in a storm<\/figcaption><\/figure>\n<p>Subtle features in thunderstorms captured by rapid scanning phased array radar could alert forecasters to the potential of severe weather.<\/p>\n<p>NSSL researchers used the National Weather Radar Testbed (NWRT) Phased Array Radar(PAR) to sample a tornadic supercell at a close 20km range for the first time.<\/p>\n<p>The storm occurred on May 13, 2009 in central Oklahoma and produced an EF-0 tornado, heavy rain, and hailstones up to 2.5cm in diameter.<\/p>\n<p>The storm also provided a unique research opportunity as it moved in-between the research radar and the National Weather Service WSR-88D operational radar. Because data were collected from two radars on the same storm, special analysis techniques were applied to estimate wind fields not usually obtainable by a single radar. This \u201cdual-Doppler\u201d analysis technique revealed subtle interactions inside the storm before the tornado formed.<\/p>\n<p>Recent analysis of this storm revealed the 43 second update time of the PAR provided a much better depiction of the evolution of the tornado\u2019s parent circulation than the 4.2 minute update time of the WSR-88D. The study also suggests that the tornado\u2019s parent circulation resulted from the merging of two circulations, observed by several scans of PAR and the one scan of the WSR-88D.<\/p>\n<p>Phased array radar technology uses an array of transmit and receive elements on a flat panel, and can collect the same weather information as a WSR-88D radar but in about one-sixth the time. \u00a0NSSL researchers continue to demonstrate PAR technology provides improved detection of severe weather hazards.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Subtle features in thunderstorms captured by rapid scanning phased array radar could alert forecasters to the potential of severe weather.<\/p>\n","protected":false},"author":38,"featured_media":835,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_eb_attr":"","ghostkit_customizer_options":"","ghostkit_custom_css":"","ghostkit_custom_js_head":"","ghostkit_custom_js_foot":"","ghostkit_typography":"","footnotes":""},"categories":[11,12],"tags":[182,241,285,345,354,370,415,488,540],"class_list":["post-817","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-radar","category-research-news","tag-hot-items","tag-issue-octobernovember-2010","tag-may132009","tag-nwrt","tag-oklahoma","tag-par","tag-rotation","tag-tvs","tag-wsr-88d"],"acf":[],"wps_subtitle":"","_links":{"self":[{"href":"https:\/\/inside.nssl.noaa.gov\/nsslnews\/wp-json\/wp\/v2\/posts\/817","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/inside.nssl.noaa.gov\/nsslnews\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/inside.nssl.noaa.gov\/nsslnews\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/inside.nssl.noaa.gov\/nsslnews\/wp-json\/wp\/v2\/users\/38"}],"replies":[{"embeddable":true,"href":"https:\/\/inside.nssl.noaa.gov\/nsslnews\/wp-json\/wp\/v2\/comments?post=817"}],"version-history":[{"count":0,"href":"https:\/\/inside.nssl.noaa.gov\/nsslnews\/wp-json\/wp\/v2\/posts\/817\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inside.nssl.noaa.gov\/nsslnews\/wp-json\/wp\/v2\/media\/835"}],"wp:attachment":[{"href":"https:\/\/inside.nssl.noaa.gov\/nsslnews\/wp-json\/wp\/v2\/media?parent=817"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inside.nssl.noaa.gov\/nsslnews\/wp-json\/wp\/v2\/categories?post=817"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inside.nssl.noaa.gov\/nsslnews\/wp-json\/wp\/v2\/tags?post=817"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}