UNOSATThis map illustrates potentially damaged structures and buildings in Portsmouth (Saint John Parish) as detected by satellite image acquired after landfall of the Tropical Cyclone Maria-17 on 19 September 2017. UNITAR-UNOSAT analysis used a Pleiades image acquired on 20 September 2017 as post imagery. UNITAR-UNOSAT identified in the analysed area (Portsmouth and surroundings) 782 potentially damaged structures. Taking into account the pre-building footprints provided by Humanitarian OpenStreetMap, this represents 55% of the total number of structures within the cloud free analysed area. The analysis could have been underestimated due to cloud cover. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to UNITAR-UNOSAT.maria-tropical-cyclone-damage-assessment-in-portsmouth-saint-john-parish-dominicaHumanitarian Data ExchangePublicMaria Tropical Cyclone. Damage Assessment in Portsmouth,Saint John Parish, DominicaDatasetsDominica2017-09-21