The tropical wave-watching marathon begins: African waves can take up to two weeks to reach the continental U.S., but several obstacles can prevent them from making it that far.

The tropical wave-watching marathon begins: African waves can take up to two weeks to reach the continental U.S., but several obstacles can prevent them from making it that far.

Comienza el maratón de vigilancia de las ondas tropicales: las ondas africanas pueden tardar hasta dos semanas en llegar a Estados Unidos continental, pero varios obstáculos…