UNOSAT Raboso Earthquake Mw 7.1, Mexico 19 September 2017

UNOSAT Raboso Earthquake Mw 7.1, Mexico 19 September 2017 Population Exposure Analysis 20 September 2017 Geneva, Switzerland UNOSAT Contact: Postal Address: Email: [email protected] UNITAR – UNOSAT, IEH T: +41 22 767 4020 (UNOSAT Operations) Chemin des Anémones 11, 24/7 hotline: +41 75 411 4998 CH-1219, Genève, Suisse UNITAR-UNOSAT | Raboso earthquake, Mexico. Mw 7.1– 19 September 2017| Population Exposure Analysis Overview: An earthquake of magnitude 7.1 M at a depth of 51 km hit the central-west areas of Puebla State (population 4.4 million people) on 19 September at 18.14 UTC. According to the National Seismological Service (SSN) of Mexico, the epicenter was located 12 km southeast of Axochiapan, Morelos, and 120 km from Mexico City. The earthquake was measured at a magnitude of 7.1, occurring at 13:14:40 Central Daylight Time, at a depth of 51 km.The United States Geological Survey (USGS) placed the epicenter 5 km ENE of San Juan Raboso and reported a measurement of VII (Very Strong) on the Mercalli intensity scale. Local media reported that at least 216 people died, of which 71 in Morelos State, 43 in Puebla State, 86 in Mexico City, 12 in Mexico State, 3 in the state of Guerrero,1 in Oaxaca. They also reported over 45 buildings collapsed, including school facilities (El Universal). UN-OCHA mentioned that two million people are without power in Mexico City. Assessments are underway and the number of victims is expected to increase. The Mexican National Committee for Emergencies is assessing the need for an international search and rescue mobilization UNOSAT has produced a Population exposure analysis based on Earthquake’s Moderate to Very Strong shaking zones deduced from USGS ground motion intensity data retrieved at 2017-09-20 00:49:00 (UTC) and WorldPop gridded population estimates (2015): Estimated Population Exposure to Earthquake Shaking: Total population of Population Exposed to Population Exposed to Population Exposed to Mexico Moderate Shaking Strong Shaking Very Strong Shaking 125 million 14.36 million 15.12 million 406 thousand The table below shows population exposure estimation based on Earthquake’s related shaking areas deduced from USGS ground motion intensity data, at state level (Administrative Unit 1). Total Population States Population exposed to in Affected States Moderate Strong Very Strong Shaking Shaking Shaking Mexico 14,355,266 15,123,506 405,724 29,884,496 Puebla 1,423,319 3,172,852 235,973 4,832,144 Morelos 430,615 1,391,339 169,752 1,991,706 Hidalgo 67,750 67,750 Tlaxcala 933,905 930 934,836 Guerrero 165,116 2,645 167,761 Mexico 9,358,973 3,322,449 12,681,422 Veracruz 149 149 Distrito Federal 1,827,836 7,231,000 9,058,836 Oaxaca 147,601 2,291 149,892 Total 14,355,266 15,123,506 405,724 29,884,496 Population exposure, summarized at State level, has been calculated using 100 m resolution WorldPoP dataset. This is a preliminary analysis & has not yet been validated in the field. You can download complete excel tables with the population exposure estimates at municipality level (administrative unit 2) using this link. UNITAR-UNOSAT | Raboso earthquake, Mexico. Mw 7.1– 19 September 2017| Population Exposure Analysis Map of the Areas Experienced Moderate to Very Strong Shakes .

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