{"id":4921,"date":"2018-09-28T15:07:03","date_gmt":"2018-09-28T20:07:03","guid":{"rendered":"https:\/\/inside.nssl.noaa.gov\/nsslnews\/?p=4921"},"modified":"2018-10-16T15:22:23","modified_gmt":"2018-10-16T20:22:23","slug":"forecasters-now-have-richers-data-to-predict-fast-moving-floods","status":"publish","type":"post","link":"https:\/\/inside.nssl.noaa.gov\/nsslnews\/2018\/09\/forecasters-now-have-richers-data-to-predict-fast-moving-floods\/","title":{"rendered":"Forecasters now have richer data to predict fast-moving floods"},"content":{"rendered":"<p><iframe loading=\"lazy\" title=\"Bite-Sized Science: Improving Flash Flood Warnings\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/yiROl_DOcho?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>&nbsp;<\/p>\n<p>Flash floods \u2014 raging torrents of water caused by heavy rainfall and overtopped rivers and streams \u2014 can become deadly in a matter of minutes.<\/p>\n<p>Now, a new forecasting tool is helping NOAA National Weather Service forecasters predict when and where these devastating events will occur.<\/p>\n<p>Developed by researchers at NOAA&#8217;s National Severe Storms Laboratory and its partners, FLASH \u2014 short for the Flooded Locations and Simulated Hydrographs Project \u2014 combines real-time rainfall estimates with real-time surface models to supply forecasters better information and more confidence with which to issue flood warnings.<\/p>\n<p><strong>How it works<\/strong><br \/>\n<a href=\"https:\/\/inside.nssl.noaa.gov\/flash\/\">FLASH<\/a> gathers rainfall data from multiple radars, combines it with information about the type of surface where rain is falling and creates a highly detailed forecast for when specific rivers and streams will flood and by how much. FLASH also provides historical context, helping forecasters communicate the significance of a predicted flash flood.<\/p>\n<p>FLASH was tested by researchers and NWS forecasters during the HMT-Hydro testbed experiments from 2014-2016, allowing the product to be fine-tuned.<\/p>\n<p><strong>What&#8217;s Next<\/strong><\/p>\n<p>FLASH is being reframed into a fully probabilistic framework called Pro-FLASH. This consideration of uncertainty in the modeling process accommodates forcings from ensemble precipitation forecasts.<\/p>\n<p>Such can increase the lead time with the distributed hydrologic forecasts, but must consider the associated uncertainties with the forcings. We are also developing FLASH products for the outer-continental United States domains including Alaska, Hawaii, Guam, and the Caribbean.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>FLASH \u2014 short for the Flooded Locations and Simulated Hydrographs Project \u2014 is now in the hands of NWS forecasters!<\/p>\n","protected":false},"author":131,"featured_media":4923,"comment_status":"closed","ping_status":"closed","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":[1,10],"tags":[622,138,645],"class_list":["post-4921","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","category-r2o","tag-featured","tag-flash","tag-r2o"],"acf":[],"wps_subtitle":"","_links":{"self":[{"href":"https:\/\/inside.nssl.noaa.gov\/nsslnews\/wp-json\/wp\/v2\/posts\/4921","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\/131"}],"replies":[{"embeddable":true,"href":"https:\/\/inside.nssl.noaa.gov\/nsslnews\/wp-json\/wp\/v2\/comments?post=4921"}],"version-history":[{"count":3,"href":"https:\/\/inside.nssl.noaa.gov\/nsslnews\/wp-json\/wp\/v2\/posts\/4921\/revisions"}],"predecessor-version":[{"id":4926,"href":"https:\/\/inside.nssl.noaa.gov\/nsslnews\/wp-json\/wp\/v2\/posts\/4921\/revisions\/4926"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inside.nssl.noaa.gov\/nsslnews\/wp-json\/wp\/v2\/media\/4923"}],"wp:attachment":[{"href":"https:\/\/inside.nssl.noaa.gov\/nsslnews\/wp-json\/wp\/v2\/media?parent=4921"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inside.nssl.noaa.gov\/nsslnews\/wp-json\/wp\/v2\/categories?post=4921"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inside.nssl.noaa.gov\/nsslnews\/wp-json\/wp\/v2\/tags?post=4921"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}