Estimated precipitation accumulation over Yemen from 20th July to 1st August 2021

**UNOSAT code: FL20210729YEM** This map illustrates satellite-detected surface waters over Sirwah, Bani Dabyan, and Al Jubah districts of Yemen as observed from a Sentinel-1 radar image acquired on 26 July 2021. Within the analyzed area of about 3,800 km2, a total of about 6.5 km2 of lands appear to be flooded. Based on Worldpop population data and the detected surface waters, about 1,800 people may be potentially exposed or living close to flooded areas. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to UNITAR- UNOSAT.

**UNOSAT code: FL20240812YEM** This map illustrates satellite-detected water extent in Al Hodeidah Governorate, Yemen as observed from a Sentinel-2 satellite image acquired on 07 August 2024 at 10:59 local time . Within the cloud free analysed areas of about 20,000 km², a total of about 450 km² of lands appear to be affected with flood waters. Based on Worldpop population data and the flood extent, approximately 170,000 people are potentially exposed or living close to flooded areas. 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).

**UNOSAT code: FL20210729YEM** This map illustrates satellite-detected surface waters over Sirwah and Ma'rib City districts of Yemen as observed from a Sentinel-2 image acquired on 5 August 2021. From the previous preliminary flood assessment conducted on 2 August 2021, an additional 1.45 km2. Based on Worldpop population data and the detected surface waters, about 90 additional people may be potentially exposed or living close to flooded areas. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to UNITAR- UNOSAT.

**UNOSAT code FL20231105SOM** This application provides geospatial information on ongoing satellite based-assessment related to the ongoing floods in Somalia that started in November 2023. Important note: The boundaries and names shown, and the designations used on this map do not imply official endorsement or acceptance by the United Nations. The United Nations Satellite Centre -UNOSAT is not responsible for the misuse or misrepresentation of the map.

**UNOSAT code: FL20240804PAK** This application provides cumulative satellite-detected water using VIIRS in Pakistan from July 2024 based on NOAA-20 [VIIRS] data.

**UNOSAT code: FL20250110SSD** This map illustrates cumulative satellite-detected water using VIIRS in South Sudan between 13 to 17 August 2025, compared with the period from 25 to 29 April 2025. Within the cloud-free analysed areas of about 620,000 km², a total of about 26,000 km² of land appears to be affected by flood waters. Water extent appears to have increased of about 15,000 km² since the period between 25 to 29 April 2025 within the cloud-free analysed areas. Based on Worldpop population data and the maximal flood water extent ~416,000 people are potentially exposed or living close to flooded areas. 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).