#  Hurricane Maria Relocation 

 



   ![Map of San Jose](/sites/g/files/omnuum10826/files/styles/hwp_1_1__720x720_scale/public/datasmart/files/hurricane_small_feature.png?itok=k9vTPZ2y) 

 

Using aggregated cellphone data and following very strict data privacy standards, data analytics company Teralytics mapped the migration patterns in and out of Puerto Rico from August 2017 to February 2018 from a sample of 500,000 Puerto Ricans. They found that 407,465 Puerto Ricans in their sample left the island and 359,813 returned in that timeframe, leaving nearly 50,000 Puerto Ricans on the US mainland. They could show exactly when they left, where they went, and when (or if) they returned to the island, based on the de-identified cell phone data. Teralytics mapped the US states and counties where Puerto Ricans in their sample chose to relocate.



 

##  Stats 

Dataset(s): Mobile phone data

Visualization: Map

Jurisdiction: United States

Developed by: Teralytics



 

 



 [ Project link arrow\_circle\_right ](https://streamable.com/kir7j) 

 

 

 

 

  [### Map Monday: Tracking Relocation and Crowdsourced Mapping during Hurricane Maria

 ](/news/article/map-monday-tracking-relocation-and-crowdsourced-mapping-during-hurricane-maria) February 11, 2019 

 February 11, 2019 GIS Maps: Teralytics Mass Migration Tracker and OpenStreetMap Geographic Area: Puerto Rico Year Published: 2017 Goals: Track the mass migration flows of Puerto Ricans before, during and after Hurricane Maria (Teralytics) and provide... 

 

 

   ![A map of San Juan and the surrounding areas with evacuation routes/highways outlined](/sites/g/files/omnuum10826/files/styles/hwp_16_9__480x270/public/datasmart/files/hurricane_small.png?itok=wEvxR14z)