January 2013 - Cyclone Evan is a powerful category 4 storm that tore through the Pacific in December 2012 and was initially compared to the dramatic storm that hit the same region in 1993. On 15 December, as the cyclone unleashed its power provoking death and destruction, UNOSAT was activated by OCHA with a request to deliver rapid mapping over Samoa, and then again on 18 December 2012 for Fiji. While Samoa had little forewarning of Evan’s arrival, Fiji benefitted from an early alert and could prepare for the storm landfall, which caused extensive destruction but no casualties.
This atlas provides detailed crisis satellite imagery coverage and building damage assessment data over the Tuamasaga District, Upolu Island, Samoa based on Pleiades data recorded on the 19 December 2012. Analysis based on WorldView-2 data recorded on the 18 December 2012 in areas obscured by clouds. Pre-crisis GeoEye-1 data recorded 2 October 2012 were used for comparison during the analysis.
This report provides a detailed analysis of damages observed in the coastal area of Tuamasaga District, Upolu, Samoa. Pleiades Satellite imagery acquired on 19 December 2012 and GeoEye 01 acquired on 24 September April 2012 was used for this report. A majority of buildings damaged or destroyed are mainly residential with roof damages and debris with occasional collapsed structures.
This report provides a detailed analysis of damages observed in the city of Apia, Tuamasaga District, Upolu, Samoa. Pleiades Satellite imagery acquired on 19 December 2012 and GeoEye 01 acquired on 24 September April 2012 was used for this report. Building damages in Apia appear to be limited to roof damages and debris with occasional collapsed structures. The most severe building damages observed in the imagery appear to be within the flood plains of rivers and along the coast.
This atlas map product illustrates satellite-detected areas of likely building and vegetation damages caused by the magnitude 8.0 earthquake and resulting tsunami on 29 September 2009. A total of 9 separate focus maps are included, highlighting damage sites identified from post-disaster satellite imagery collected from 30 September to 4 October 2009. Damage identification was restricted by the partial coverage and spatial resolution of the imagery, as well as by cloud cover. It is probable therefore that damages have been underestimated.