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In September 2017, Category 4 storm Hurricane Maria struck Puerto Rico head-on

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The storm caused the longest electricity black-out in U.S. history

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A new NASA study mapped Puerto Rico’s slow recovery using night lights satellite data

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Lights before the storm

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Lights after the storm

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Four months after the storm

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Six months after the storm

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This high-resolution imagery was created with three powerful

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data sets that monitored the absence of electricity

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41 percent of the long-duration power outages

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that occurred post-Maria happened in rural areas

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29 percent of the long-duration power outages occurred in urban areas

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Puerto Rico’s energy grid directs all power to prioritized locations, like urban centers,

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rather than by proximity to the nearest power plant

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Imaging the absence of electricity from space offers a new way to visualize

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impacts to Puerto Rico’s most vulnerable communities

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The next step will be to sync-up Black Marble night lights data

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with updated information on community lifelines