Polo off Mexican coast is among 'the strongest storms ever'

The U.S. National Hurricane Center in Miami has called Polo an "extremely dangerous" storm and forecast the system would turn sharply to the northwest before moving west-northwest over the next several days.

The U.S. National Hurricane Center in Miami has called Polo an "extremely dangerous" storm and forecast the system would turn sharply to the northwest before moving west-northwest over the next several days.