SuperTyphoon Wipha Grows Into the 13th Named Category 4 or 5 Storm of 2007

Typhoon Wipha has grown into a Category 4 hurricane, with winds clocking at upwards of 138 mph, according to the Joint Typhoon Warning Center.
 
According to a hurricane track on Weather Underground, it appears that the storm will strike close to Shanghai Wednesday, and near the border of North and South Korea Thursday.
There have been 13 Category 4 or Category 5 storms recorded this year around the world. The number of strong storms could be significant if controversial predictions about global warming prove correct. Increased ocean temperatures could make storms stronger, leading to an overall increase in the number of the strongest storms.