National Hurricane Center, Gabrielle and tropical
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During this epic lull, wind shear was strong and limited the growth of tropical waves pushing from the west coast of Africa into the Main Development Region, where most hurricanes form.
Catarina made landfall near Santa Catarina state on March 28 with estimated 100-mph winds, damaging or destroying tens of thousands of homes. It was the first recorded hurricane-strength storm in the South Atlantic, making it a milestone in meteorological history.
Although no immediate land threat exists from either Gabrielle or the forming Humberto, the increase in tropical activity underscores how quickly conditions in the Atlantic basin can change. September is historically the most active month of the hurricane season, which officially runs through November 30.
As it turns out, the hurricane naming system is an organized, multistep global process—not someone randomly selecting names for storms as they form. It involves an element of mystery and difficult decisions made on an annual basis.
The National Hurricane Center is tracking four tropical waves, two of which may become tropical depressions within the next week.