The first storm in a one-two punch heading for Hawaii was rapidly weakening on its approach to the state, while a second system close behind it strengthened and was on track to pass north of the islands.

Iselle was supposed to weaken as it slowly trudged west across the Pacific. It didn't - and now Hawaii is poised to take its first direct hurricane hit in 22 years.

Though Hawaiians are used to preparing for hurricanes and tropical storms, they rarely get hit. This time they may not be so lucky.