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Saharan Dust Event to Impact USVI and Puerto Rico, Public Health Advisory Issued

  • Staff Consortium
  • December 23, 2024

A plume of Saharan dust is expected to move into Puerto Rico and the U.S. Virgin Islands beginning on Tuesday, December 24, according to the National Weather Service (NWS) in San Juan. The event, classified as moderate to severe, is forecasted to peak from Tuesday afternoon into the overnight hours, with effects lingering through Christmas Day before tapering off by Wednesday afternoon. Saharan dust consists of mineral particles originating from the Sahara and Sahel deserts in Africa. These particles are carried by trade winds across the Atlantic Ocean, traveling over 5,000 kilometers to reach the Caribbean, including Puerto Rico and the U.S. Virgin Islands. While this natural phenomenon serves as a fertilizer for marine and terrestrial ecosystems, it poses health risks, particularly to vulnerable populations. Saharan dust can exacerbate conditions in individuals who are immunocompromised, sensitive, or suffer from respiratory illnesses. Scientists have noted increases in respiratory...

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