HHIT is a GIS-based tool that collates information about early 19th
century U.S. tropical cyclones. An editable version of the HHIT
is available from the Hurricane Climate Institute at Florida State
HHIT is a series of maps containing tropical cyclone information transcribed
from historical source documents. The primary source is David Ludlum's
1963 AMS Monograph. Separate maps show estimated tracks and intensities.
HHIT database page gives a list of years
that have information about historical hurricanes. It is recommended
that you read the description pdf first.