La Niña could impact Atlantic hurricane season
La Niña conditions are currently in place and are expected to last through the summer. This pattern is caused by stronger trade winds over the eastern Pacific. These stronger winds result in a less favorable environment for tropical development in the Pacific.
While the Pacific experiences increased wind shear and reduced tropical cyclone formation, the Atlantic generally experiences less wind shear. Create a more favorable environment for the formation of tropical storms.
Wind shear in the tropics can tear apart areas of developing thunderstorms that could become tropical cyclones. With reduced wind shear during a La Niña, it is possible that more storms will develop in the Atlantic during this upcoming tropical season.
Although wind shear can play an important role in the development of tropical cyclones, it is not the only factor that can impact tropical systems. Saharan dust can also play a limiting role in the development of tropical cyclones.
Saharan dust, or the layer of dry, dusty air that can blow in from Africa, can cross the Atlantic Ocean. This dusty, dry air stifles the development of storms in the ocean. If the storm cannot move out of the dry dusty air zone, it can be significantly weakened or even dissipate.
With only days before the start of Atlantic hurricane season, time will tell how active this upcoming season will be. The Weather Authority will be there throughout the season to keep you up to date with the tropics.
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