National Hurricane Center 
Storm Surge Unit
1977 Gulf Steam Analysis Data

January       1977
February     1977
March          1977
April             1977
May              1977
June             1977     
July               1977
August         1977
November   1977
December   1977

Image below from NOAA Ocean Service Education, Gulf Steam Current webpage 8/17/2015 : http://oceanservice.noaa.gov/education/kits/currents/media/supp_cur05d.html