All Updates

1,921 entries found
23 Feb 2018 description
map UNOSAT

This map illustrates satellite-detected building damage assessment as of 15 February 2018, over the towns of Holonga, Malapo, Vaini, Longoteme and Fohala, Tongatapu Island, Tonga, following the passage of the tropical cyclone GITA-18. The analysis was conducted using postevent Pleiades images as of 15 and 16 February 2018 and pre-event WorldView-3 images as of 12 January 2018. UNITAR-UNOSAT analysis identified 354 potentially damaged structures within the area.

22 Feb 2018 description
map UNOSAT

This map illustrates satellite-detected building damage assessment as of 16 February 2018, over the town and airport of Fua amotu, Tongatapu Island, Tonga, following the passage of the tropical cyclone GITA-18. The analysis was conducted using a post-event Pleiades image as of 16 February 2018 and a pre-event WorldView-3 image as of 12 January 2018. UNITAR-UNOSAT analysis identified 188 potentially damaged structures within the area. According to the pre-event building footprints provided by Humanitarian Open Street Map, this represents 38% of the total number of buildings analyzed.

21 Feb 2018 description

This map illustrates satellite-detected building damage assessment as of 16 February 2018, over the towns of Nukuleka, Hoi, Mua and Alaki, Tonga, following the passage of the tropical cyclone GITA-18. The analysis was conducted using post-event Pleiades images and a pre-event WorldView-3 image as of 12 January 2018. In total, 662 buildings were detected as potentially damaged. According to pre-event building footprints provided by Humanitarian OpenStreet Map, this represents ~46% of the total number of buildings present in the area.

20 Feb 2018 description
map UNOSAT

This map illustrates satellite-detected building damage assessment as of 13 February 2018, over the northeastern part of Tongatapu Island, Tonga, following the passage of the tropical cyclone GITA-18. The analysis was conducted using post-event WorldView-2 images and pre-event WorldView-3 images as of 12 January 2018. A total of 548 buildings were detected as damaged (~43%) over the area of interest. The villages of Navutoka and Manuka were also affected by flooding in a number of neighborhoods. The overall estimated damage level is classified as severe.

16 Feb 2018 description

This map illustrates satellite-detected building damage assessment as of 13 February 2018, over the southern part of Tongatapu island, Tonga, following the passage of the tropical cyclone GITA-18. The analysis was conducted using a post-event WorldView-2 image as of 13 February 2018.

Maps & Infographics

1,836 entries found