We explore the role of waves, storm surges and sea level rise for the Caribbean region with a focus on the eastern Caribbean islands. We simulate past extreme events, suggesting a storm surge might reach 1.5 m and coastal wave heights up to 12 m offshore and up to 5 m near the coast of St Vincent. We provide sea level projections of up to 2.2 m by 2100. Our work provides quantitative evidence for policy-makers, scientists and local communities to actively protect against climate change.

Impacts of storm event chronology in a storm cluster was investigated. The largest event-driven bed level change occurred under the most powerful storm event when it initialised the cluster, and the lowest bed level change occurred for the weakest event when it ended the cluster. Negligible variability in the cumulative impact of the storm clusters occurred in response to different storm wave chronologies. However, the highest erosion was found when the storms approached in increasing severity.

A pressing problem facing coastal decision makers is the conversion of "high-level" but plausible climate change assessments into an effective basis for climate change adaptation at the local scale. Here, we describe a web-based, geospatial decision support tool (DST) that provides an assessment of the potential flood risk for populated coastal lowlands arising from future sea-level rise, coastal storms, and high river flows.