{"id":747,"date":"2017-03-30T17:22:00","date_gmt":"2017-03-30T16:22:00","guid":{"rendered":"http:\/\/blogs.reading.ac.uk\/the-forum\/?p=747"},"modified":"2021-11-12T09:21:40","modified_gmt":"2021-11-12T09:21:40","slug":"saving-lives-and-reducing-damage-with-flood-early-warnings","status":"publish","type":"post","link":"https:\/\/research.reading.ac.uk\/research-blog\/2017\/03\/30\/saving-lives-and-reducing-damage-with-flood-early-warnings\/","title":{"rendered":"Saving lives and reducing damage with flood early warnings"},"content":{"rendered":"

By Professor Hannah Cloke, hydrologist, Water@Reading<\/strong><\/p>\n

If you knew there was a strong chance that your local river was about to burst its banks and sweep away your house, you\u2019d get yourself, and your family, out of harm\u2019s way.<\/p>\n

Yet tragically, despite major advances in flood forecasting, hundreds of people every year still die in floods. Either warnings are not getting through, or people and authorities are failing to take appropriate action.<\/p>\n

\"\"<\/a>
Severe flooding brought on by a strong coastal El Nino has left more than 90 dead and hundreds of thousands\u00a0homeless in Northern Peru [photo: Maria-Helena Ramos]<\/figcaption><\/figure>This month has again seen severe flooding in many parts of the world, including Peru and Australia, leading to loss of life and destruction of homes and livelihoods.<\/p>\n

We will never be able to stop such awful floods. But there are some vital steps that we can take to reduce the risk from these events and to save lives.<\/p>\n

In recent years we have been taking great strides in our capability to provide early flood warnings, so that people can prepare for upcoming floods \u2013 often before it even starts to rain.<\/p>\n

The Water@Reading research group at the University of Reading works alongside flood forecasters to develop better forecasts and warnings, such as those of the European Flood Awareness System (EFAS) and the Global Flood Awareness System (GloFAS), part of the EU\u2019s Copernicus Emergency Management Service<\/a>.<\/p>\n

But how do we know if we\u2019re doing a good job? How can we convince people that the warnings are accurate, and worth acting on?<\/p>\n

<\/p>\n

A first step is to consider how much we have been able to improve the value of the flood forecasts. We undertook a continental scale analysis of potential avoided flood damages and thousands of flood forecasts from the EFAS and we\u2019ve estimated that there is a substantial monetary benefit<\/a> in cross-border continental-scale flood early warning systems.<\/p>\n

Evidence for investment<\/strong><\/h4>\n

In Europe, the benefits are substantial \u2013 saving around \u00a3400 of avoided damage for every \u00a31 invested in flood forecasts.<\/p>\n

These flood forecasting systems are expensive. They are very complicated to run and test, and eat up computer processing power and data, meaning only the world\u2019s most powerful supercomputers are capable of running them. But it is crucial that efforts to assess their effectiveness don\u2019t just focus on average water levels in all our rivers \u2013 instead, we must concentrate on the areas where people actually live.<\/p>\n

We need strong evidence that shows how improving the science behind the early warning system will improve the outcome for people receiving the warnings. In short, we must show how extra investment in the science will help save lives, and protect property.<\/p>\n

Our research, published this week in Environmental Research Letters<\/em><\/a>,<\/em> shows for the first time that value of the EFAS forecasts is increased substantially by using forecasts from many different weather forecasting centres as inputs to our flood forecasting system.<\/p>\n

These findings underline the fact that effective disaster risk management has collaboration and partnership at its heart.<\/p>\n

We can use this evidence to support development in other continents. This will help improve resilience to floods, particularly in some of the world\u2019s most vulnerable areas, where early warning systems could make a real difference to saving lives and reducing disaster risk.<\/p>\n

Reference: Hannah L Cloke<\/span>, Florian Pappenberger<\/span>, Paul J Smith,\u00a0<\/span><\/span>and Fredrik Wetterhall (2017)\u00a0<\/span>How do I know if I’ve improved my continental scale flood early warning system?<\/a> \u00a0Environmental Research Letters doi: 10.1088\/1748-9326\/aa625a<\/a>\u00a0<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

By Professor Hannah Cloke, hydrologist, Water@Reading If you knew there was a strong chance that your local river was about to burst its banks and sweep away your house, you\u2019d…Read More ><\/a><\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"__cvm_playback_settings":[],"__cvm_video_id":"","footnotes":""},"categories":[13],"tags":[93,289,298,327,372,384,405,670],"class_list":["post-747","post","type-post","status-publish","format-standard","hentry","category-environment","tag-australia","tag-ecmwf","tag-efas","tag-environmental-research-letters","tag-flooding","tag-forecast","tag-glofas","tag-peru"],"acf":[],"yoast_head":"\nSaving lives and reducing damage with flood early warnings - Connecting Research<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/research.reading.ac.uk\/research-blog\/2017\/03\/30\/saving-lives-and-reducing-damage-with-flood-early-warnings\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Saving lives and reducing damage with flood early warnings - 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