Hurricane Kristy has rapidly intensified into a Category 4 storm, continuing to churn away from land while forecasters predict further strengthening. Initially developing from former Tropical Storm Nadine, Kristy has progressed through several categories, having been upgraded to a Category 3 and then to a Category 4 storm. Although the storm poses no immediate threat to Hawaii, experts are monitoring the potential for changes in its path. The tropics have seen a lull in activity, marking a quieter phase after months of heightened storms.