Evaluación de daños en edificaciones en la ciudad de Zarzal, Valle del Cauca, Colombia, al 13 de agosto de 2026

**UNOSAT code: EQ20260810COL, GDACS ID: 1557236** This map illustrates satellite-based damage assessment density in the city of Zarzal, Valle del Cauca Department, approximately 50 km from the epicentral area of the magnitude 7.4 earthquake of 10 August 2026 in Colombia. Damage was identified primarily using Pléiades very-high-resolution satellite imagery acquired on 13 August 2026. Within the analysed area, 21 buildings were identified as damaged and 180 were identified as potentially damaged. The high incidence angle (>40°) of the satellite imagery used for this analysis can affect the accuracy of the analysis. Damage estimates from such high-incidence-angle satellite imagery should therefore be interpreted with caution. This is a preliminary analysis and has not yet been validated in the field. Ground verification is encouraged, and feedback can be sent to the United Nations Satellite Centre.

Posterior al deslizamiento de tierra que sembró el caos en la ciudad de Mocoa (Departamento de Putumayo, Colombia) el 31 de marzo de 2017 como consecuencia de las fuertes lluvias, el International Charter Space & Major Disasters fue activado bajo la petición de la Unidad Nacional para la Gestión del Riesgo de Desastres, IDEAM. En respuesta a la emergencia, UNITAR-UNOSAT ha llevado a cabo análisis visible de daño en las edificaciones causado por el deslizamiento de tierra, usando imágenes satelitales de alta resolución. Este mapa ilustra edificaciones dañadas detectadas en imágenes satelitales y la densidad de daño asociada en la ciudad de Mocoa y sus alrededores. El análisis ha sido conducido utilizando como imágenes post emergencia las adquiridas por los satélites Pleiades y GeoEye-1 el 7 y el 10 de abril de 2017 y como imágenes pre emergencia las adquiridas por los satélites WorldView-2 y WorldView-1 en las fechas del 21 de diciembre de 2016 y 26 de diciembre de 2013. El resultado del análisis conducido por UNOSAT revela un total de 1,082 edificaciones dañadas, de las cuales 736 aparecen como destruidas en la imagen o arrastradas por el deslizamiento de tierra y 346 presentan daño severo. Debido al acusado ángulo y la cobertura de nubes de las imágenes satelitales, UNITAR-UNOSAT ha utilizado orthophotos colectadas por Corpoamazonia como fuente auxiliar de validación del análisis realizado con las imágenes satélites. Las orthophotos y otros datos secundarios fueron provistos por OpenStreetMap & la Unidad de Mapeo Humanitario y UMAIC (Unidad de Manejo y Análisis de Información de Colombia), quienes también han provisto apoyo en la coordinación y gestión de la información durante esta emergencia. Por favor, note que el número de estructuras dañadas ha podido ser infra-estimado como consecuencia de los parámetros de las imágenes satelitales utilizadas. Este es un análisis preliminar que aún no ha sido validado en el terreno. Por favor, envíen sus comentarios a UNITAR-UNOSAT.

**UNOSAT code: EQ20260810COL, GDACS ID: 1557236** This map illustrates structures and buildings affected by the magnitude 7.4 earthquake with an epicentre south of San José del Palmar town in Colombia, with analysis focused on Viterbo in Caldas Department, approximately 50 km from the mainshock epicentre. Damage and destruction were identified primarily using Pleiades very-high-resolution satellite imagery acquired on 12 August 2026. In this area 55 buildings were identified as damaged and 99 were identified potentially damaged buildings. This is a preliminary analysis and has not yet been validated in the field. Ground verification is encouraged, and feedback can be sent to the United Nations Satellite Centre.

Following a large mudflow that hit the city of Mocoa (Department of Putumayo, Colombia) on 31 March 2017 as a consequence of the heavy rains, the International Charter Space and Major Disasters has been activated upon the request of the National Unit for Disaster Risk Management (UNGRD) / Unidad Nacional para la Gestion del Riesgo de Desastres, IDEAM. In response to this emergency, UNITAR-UNOSAT has carried out satellite based damage analysis to assess (visible) building structural damage caused by mudflows. This map illustrates satellite-detected damaged structures including building damage density in Mocoa city and its surroundings. Analysis has been undertaken by using post satellite imagery acquired by Pleiades and Geoeye-1 satellites on the 7 and 10 April 2017 and pre satellite images acquired by Worldview-2 & 1 satellites on the 21 December 2016 and 26 December 2013. As result of UNOSAT satellite analysis, a total of 1,082 buildings were detected as damaged of which 736 observed as destroyed or washed out by mudflow and 346 observed as severely damaged. Due to the pronounced incident angle and cloud cover of the satellite images, UNITAR-UNOSAT has also used orthophotos collected by Corpoamazonia in order to validate satellite based analysis. Orthophotos and additional baseline data were provided by OSM Humanitarian Mapping Unit and UMAIC (Unidad de Manejo y Analisis de Informacion de Colombia) who is also providing information management coordination support for this event. Kindly note that the number of damaged structures could have been underestimated due to the parameters of the images. This analysis has not yet been validated in the field. Please send ground feedback to UNITAR-UNOSAT.

**UNOSAT code EQ20230909MAR, GDACS Id: 1390643** Cette carte illustre les structures/bâtiments potentiellement endommagés par le séisme du 8 Septembre 2023 à Taroudant (à 155 km au SO de Marrakech) tel qu'observé à partir de l’analyse d’une image satellite Pléiades acquise le 10 Septembre 2023. Dans ce secteur d’analyse, UNOSAT a identifié 205 bâtiments endommagés et/ou potentiellement endommagés. L'observation d'un regroupement de tentes au NE de la ville indiquerait une zone de rassemblement temporaire de sinistrés. Ceci est une analyse préliminaire et n'a pas encore été validée sur le terrain. Ne pas hésiter à envoyer vos commentaires au Centre Satellitaire des Nations Unies (UNOSAT).

**UNOSAT code: FL20241112COL, GDACS ID: 1102988** This map illustrates potentially affected structures in Riosucio Municipality, Chocó Department, Colombia as observed from a Pleiades satellite image acquired on 20 November 2024 at 11:07 Local Time. Within the analysis extent, UNOSAT identified 60 potentially affected structures amongst a total of 2,085 structures observed. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to the United Nations Satellite Centre (UNOSAT).