The utility of historical records for hazard analysis in an area of marginal cyclone influence

Abstract Shark Bay Marine Park is a UNESCO World Heritage Property located in region of marginal tropical cyclone influence. Sustainable management this unique environment as the climate changes requires quantified understanding its vulnerability to natural hazards. Here, we outline structured analysis novel historical archive information that has uncovered reports an extreme storm surge associated with Tropical Cyclone 1921 generated remarkable overland flow which left fish and sharks stranded up 9.66 km (6 miles) inland. Weighted from archives placed new framework provide inputs modelling event improves magnitude furnishes records impacts what occurred on day notably also years following. The suite plausible tracks reproduce data contextualise Category 4 or 5 return interval equivalent slightly greater than current local planning level for coastal flooding region. outcome underscores global importance examining probable maximum risk areas influence where vulnerable ecosystems vital regional infrastructure key economic are located, need factor TC marine conservation Property.