Hurricanes ETA and IOTA, Nicaragua (2021-04-27)

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Activation date: 2021-04-27 <br>
Event type: Storm <br>
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Activation reason: <br>
The CEMS Risk and Recovery Standard has been activated to assess the effects of the Eta and Iota hurricanes that hit Autonomous Region of the North and South Caribbean Coast, Nicaragua, in the first weeks of November 2020.Particularly, the products were requested with the final aim of calculating the effective impacted areas, exposed population, economic losses and livelihoods, change of land use and help in reconstruction and recovery actions.This RRM activation provides the STANDARD products Flood delineation (P04), with related Impact assessment on assets and population (P14), for eight areas of interest (totalling almost 800 km²), as well as Damage assessment (P08) for the area of Sandy Bay Sirpi (25 km²).Proposed solution and results A set flood delineation (P04) products based on Sentinel-1 data, acquired after either Eta or Iota cyclone (on the 03.11.2020, 19.11.2020 and 20.11.2020). P04 products are associated with an estimation of the corresponding water depth.Example of P04-Flood delineation production over AOI04 DakuraA pre-event reference dataset (P02) and a detailed damage assessment (P08) produced over AOI08, by mean of visual interpretation from VHR satellite imagery acquired on the 26.02.2020 and 04.12.2020 respectively.Zoom on P08-Detailed damage assessment for AOI08 Sandy Bay SirpiAn Impact assessment analysis on assets and population (P14) based on the available reference datasets (either Open Street Map or EMSR477), flood extents provided by P04, and WorldPop (2020) population data. As for AOI08, impact assessment is based on P08 results.Estimate of affected population for AOI08 Sandy Bay Sirpi <br>
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