Coastal Hazards

Know the hazards of short- and long-term sea level rise, tsunamis, hurricanes, and coastline changes

High Sea Level — Inundation Hazards

• Forecasts of High Sea Level (with potential for flooding) due to Tides, Eddies and Waves (HiOOS)
• Choose a location in Hawai‘i
  
  Choose a location Nawiliwili Harbor, Kaua'i Honolulu Harbor, O'ahu Moku o Loe Is., Kane'ohe Bay, Oahu Kahului, Maui Kawaihae Harbor, Hawai'i Hilo, Hawai'i
• Other Pacific Islands
  
  Choose a location Pago Pago Harbor, American Samoa Kwajalein Atoll
• Tide Predictions at Many Other Hawai‘i Coastal Sites
• Tsunami Warnings (Pacific Tsunami Warning Center — PTWC)
• Tsunami Evacuation Zones for the State of Hawai‘i (PDC)
• Additional Tsunami Safety & Preparedness Tips for Hawai‘i (NWS)
• Samoa Tsunami of 29 September 2009
• Tsunami Amplitudes at Hawai‘i’s Harbors
  
  Choose a location Nawiliwili Hbr., Kaua'i (NOAA/NOS/CO-OPS) Honolulu Hbr., O'ahu (NOAA/NOS/CO-OPS) Moku o Loe Is., Kane'ohe Bay, Oahu (NOAA/NOS/CO-OPS) Kahului, Maui (NOAA/NOS/CO-OPS) Kawaihae, Hawai'i (NOAA/NOS/CO-OPS) Hilo, Hawai'i (NOAA/NOS/CO-OPS)
• Propagation Model (with Pacific Ocean animation) — NOAA/PMEL/CTR
• Long-Term Sea Level Rise in Hawai‘i
• Observed Trends in Long-Term Sea Level (NOAA/NOS/CO-OPS)
  
  Choose a location Nawiliwili Hbr., Kaua'i Honolulu Hbr., O'ahu Moku o Loe Is., Kane'ohe Bay, Oahu Kahului, Maui Hilo, Hawai'i Other U.S. and global stations
• Impacts in Hawai‘i (UH Coastal Geology Group)

Hurricane Impacts & Preparedness

• NWS Central Pacific Hurricane Center — Current Conditions
• Preparing for a Hurricane — What to Expect & What to Do (FEMA)

Hawai‘i’s Coastlines

• Coastal Erosion — Erosion Rate Maps, Historical Shoreline Mosaics, Aerial & Ground Shoreline Photos (UH CGG)
  
  Choose an island O'ahu Maui Kaua'i
• Additional Coastal Imagery (All Main Hawaiian Islands)
• Aerial Photos, Landsat Images, Digital Elevation Maps & More (UH CGG)
• Oblique Aerial Photos (hawaiianimages.net)