DisasterAWARE
9
Extreme

flood Flood Risk in Honolulu, HI

Risk Level: Extreme — Score 9/10

FEMA: 9Historical: 10

Live Flood alert status near Honolulu

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Live flood activity around Honolulu — refreshed throughout the day.

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Key Risk Factors

  • FEMA rates Honolulu's county as Very High risk for this hazard
  • Estimated annual loss of $330M from this hazard type
  • Extensive history of significant events in this area
  • High recent activity — multiple events in the last 12 months
  • Average annual frequency: 5.9 events per year

Peak season: March-September

Last significant event: Flood - Urban Honolulu, HI Region, United States (2024-10-26) — 633,000 people exposed

Highest Risk Cities for Floods

1
New York, NY
FEMA: 9Historical: 10
2
Los Angeles, CA
FEMA: 9Historical: 10
3
Chicago, IL
FEMA: 9Historical: 10
4
Houston, TX
FEMA: 9Historical: 10
5
Phoenix, AZ
FEMA: 9Historical: 10
6
Philadelphia, PA
FEMA: 9Historical: 10
7
San Antonio, TX
FEMA: 9Historical: 10
8
San Diego, CA
FEMA: 9Historical: 10
9
Dallas, TX
FEMA: 9Historical: 10
10
San Jose, CA
FEMA: 9Historical: 10
Honolulu is not in the top 10 for flood risk among tracked cities.

How Honolulu Compares

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Notable Flood Events Near Honolulu

DisasterAWARE's historical archive records 5 notable flood events near Honolulu, ranked below by impact. The most impactful: Flood - Urban Honolulu, HI Region, United States (May 2024) — 923,000 people exposed; $524,641M capital exposed.

Flood - Urban Honolulu, HI Region, United States

May 18, 2024 — WARNING

923,000 people exposed; $524,641M capital exposed

Flood - Urban Honolulu, HI Region, United States

October 25, 2024 — WARNING

633,000 people exposed; $413,147M capital exposed

Flood - Urban Honolulu, HI Region, United States

October 25, 2024 — WARNING

633,000 people exposed; $413,147M capital exposed

Flood - Urban Honolulu, HI Region, United States

December 20, 2023 — WARNING

504,000 people exposed; $294,496M capital exposed

Flood - Urban Honolulu, HI Region, United States

May 18, 2024 — WARNING

Impact data not available

Flood Preparedness Tips

  • 1.Know if your property is in a flood zone — check FEMA maps
  • 2.Consider flood insurance even if not in a high-risk zone
  • 3.Never drive through flooded roadways — Turn Around, Don’t Drown
  • 4.Move valuables and important documents to upper floors
  • 5.Install sump pumps and check valves in plumbing

Related Pages

earthquake
Earthquake Risk in Honolulu
Score: 7/10
wildfire
Wildfire Risk in Honolulu
Score: 7/10
hurricane
Hurricane Risk in Honolulu
Score: 3/10
tornado
Tornado Risk in Honolulu
Score: 3/10
winter-storm
Winter Storm Risk in Honolulu
Score: 5/10
landslide
Landslide Risk in Honolulu
Score: 7/10
extreme-heat
Extreme Heat Risk in Honolulu
Score: 0/10
drought
Drought Risk in Honolulu
Score: 1/10
high-wind
High Wind Risk in Honolulu
Score: 1/10
tsunami
Tsunami Risk in Honolulu
Score: 7/10
flood
Flood Risk in San Francisco, CA
Score: 7/10
flood
Flood Risk in Oakland, CA
Score: 9/10
flood
Flood Risk in San Jose, CA
Score: 9/10

How this data is built

Honolulu, HI flood risk combines Historical Event Intelligence with authoritative hazard modeling from the Geospatial Intelligence Layers catalog. Live flood monitoring is available through the Event Intelligence API and the DisasterAWARE Platform.

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