Here's an announcement from the DLNR (Dept of Land and Natural Resources):
"We are trying to educate as many people as possible of the flood zone designations and their meanings. FEMA has an anticipated the effective date for the DFIRM (digital Flood Insurance Rate Maps) to be in January 2011 for the City and County of Honolulu. This would mean changes along the south shore from Kaena Point to Portlock.
The Flood Hazard Assessment Tool (FHAT) which can be found at hawaiinfip.org. This tool is used to determine the flood zone of a property without using the (old) paper maps.
The hawaiinfip.org website will overlay the Flood Zone over property lines to show you the flood zone boundary. You can enter the TMK or street name to find your specific property.