It's a female Humpback, 28 feet long and probably weighs over 10 tons. Sub-adult-maybe 2 years old. Some of these photos where use by Channel 5 News the link below is the video that was broadcast.

http://www.myfoxny.com/dpp/news/local_news/new_jersey/090728_humpback_whale_washes_ashore_in_new_jersey