Decreasing Concentrations of Saharan Dust Forecast Through the Week

Saharan Dust concentrations are on the decrease across Trinidad and Tobago as well as the Windward Islands this afternoon. Mild to moderate concentrations are across T&T presently, reducing air quality to moderate levels and producing hazy skies across the islands.

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Presently, moderate concentrations of Saharan Dust is present across Trinidad and Tobago, reducing air quality to moderate levels. This plume of Saharan Dust has caused moderate air quality across the Eastern Caribbean and the Greater Antilles over the last few days. Parts of the Leeward islands’ air quality is hovering between good to moderate air quality on Tuesday morning. Over the next 5 days, Saharan Dust is forecast to fluctuate, gradually decreasing as the week progresses. In areas near the vicinity of bushfires, air quality can near levels that are unhealthy for sensitive groups.

Air Quality Across the Eastern Caribbean as of 7:30AM Tuesday 14th May 2019
Air Quality Across the Eastern Caribbean as of 7:30AM Tuesday 14th May 2019

At moderate air quality levels, unusually sensitive groups should consider reducing prolonged or heavy exertion.

At unhealthy for sensitive groups: There is an increasing likelihood of respiratory symptoms in sensitive individuals. Aggravation of heart or lung disease and possible premature mortality in persons with cardiopulmonary disease and the elderly. People with respiratory or heart disease, the elderly and children should limit prolonged exertion.

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Larger, more concentrated plumes of Saharan dust begin to occur in April and continue through November. This is due to stronger thunderstorms, typically associated with tropical waves, across interior Africa sending dust into the upper atmosphere.

5-Day Air Quality Index For Trinidad and Tobago.
5-Day Air Quality Index For Trinidad and Tobago.
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00Z 14th May 2019 CAMS Copernicus Atmospheric Monitoring Tropical Atlantic Dust Aerosol Optical Depth showing the plume of Saharan Dust across Trinidad and Tobago, as well as other Southern Windward Islands decreasing in concentrations as the week progresses. Credit: Weathermodels.com
00Z 14th May 2019 CAMS Copernicus Atmospheric Monitoring Tropical Atlantic Dust Aerosol Optical Depth showing the plume of Saharan Dust across Trinidad and Tobago, as well as other Southern Windward Islands decreasing in concentrations as the week progresses. Credit: Weathermodels.com

Related: Saharan Dust

With dry conditions persisting, bush fires will be on the rise. As more Saharan Dust forecast to persist across T&T throughout the week, sensitive groups such as persons with respiratory ailments, children, the elderly and cardiopulmonary disease should take the necessary precautions.

Saharan Dust Precautions
Saharan Dust Precautions
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