sentences:  After six more hours, Nina's forward speed had quickly slowed 16 mph while the storm began a northward track, heading towards Kauai, but before reaching the island, the storm turned first to the north-northwest on December 2 and then sharply to the west later that day.On December 4 Nina had reached its peak intensity of 85 mph.At this time, a polar high pressure system moved off the coast of Japan.