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Flood watch conditions are intensifying on Kauai, where the National Weather Service has extended a Flash Flood Warning for the entire island amid periods of torrential rain, rising waterways and dangerous road conditions.
The warning was extended until 8:45 p.m. on October 31, 2026. Forecasters said rainfall was occurring at rates of up to 1 to 2 inches per hour, with the heaviest precipitation reported along Kauai’s eastern slopes. Additional showers were also approaching from the southwest.
Critical Flood Watch Conditions Continue Across Kauai
The latest alert covers the entire island and applies to streams, roads, low-lying areas and other locations vulnerable to rapid flooding. Although residents and visitors may refer to the situation as a flood watch, the National Weather Service has issued a more serious flash flood warning, meaning flooding is imminent or already occurring.
Officials are urging people to remain alert and avoid traveling through water-covered areas. Fast-moving water can quickly sweep away vehicles, while flooded roads may hide washed-out pavement, debris or other hazards.
Dangerous Road Closures Reported
Kuhio Highway remained closed at the Hanalei Bridge because of flooding. The closure affects a major route on Kauai’s North Shore and may create significant delays for residents, workers and visitors trying to travel between communities.
Drivers should not attempt to bypass barricades or enter flooded sections of roadway. Even shallow water can be dangerous when it is moving quickly, and nighttime conditions can make it difficult to judge water depth or identify obstacles.
The County of Kauai advised people seeking road-condition information to call 808-241-1725. Officials also asked residents not to call Kauai police through 911 unless they are facing an emergency.
Wailua River Water Levels Rising Rapidly
In another serious development, water levels were rising rapidly along the South Fork of the Wailua River. Rapid changes in river levels can create dangerous conditions even in areas that appear calm or have not yet flooded.
People near rivers, streams, drainage channels and low-lying neighborhoods should move to safer ground if conditions worsen. Parents should keep children away from swollen waterways, and hikers should avoid trails near streams or steep slopes while the warning remains active.
What Kauai Residents Should Do Now
The National Weather Service emphasized that people should never cross fast-flowing or rising water, whether by vehicle or on foot. A flooded roadway can become impassable within minutes as rainfall continues upstream.
- Avoid flooded roads, bridges, streams and drainage channels.
- Never drive around barricades or through moving water.
- Move to higher ground if water begins entering a home or neighborhood.
- Keep phones charged and monitor emergency alerts.
- Check on family members, neighbors and anyone who may need assistance.
Hazardous driving conditions are expected across affected areas, including ponding, reduced visibility and slick pavement. Even roads without standing water may be dangerous because of sudden downpours and debris.
Emergency Alerts and Weather Information
Kauai residents can sign up for the county’s Everbridge emergency notification service through Kauai Emergency Management. Residents may also text KAUAIEMA to 888777 to receive emergency notifications.
For weather updates, the National Weather Service automated weather line is available at 808-245-6001. Kauai Emergency Management can be reached at 808-241-1800 for additional information.
Conditions may change quickly as more showers move across the island. Residents should continue monitoring official warnings and be prepared for additional road closures or localized flooding through the evening.
Frequently Asked Questions About the Kauai Flood Watch
What is the current flood warning for Kauai?
The National Weather Service extended a Flash Flood Warning for the entire island of Kauai until 8:45 p.m. on October 31, 2026.
How much rain is falling on Kauai?
Rain was falling at rates of up to 1 to 2 inches per hour, with the heaviest rainfall concentrated along the island’s eastern slopes.
Is Kuhio Highway open at the Hanalei Bridge?
No. Kuhio Highway remained closed at the Hanalei Bridge because of flooding. Travelers should avoid the area and seek current road-condition information before departing.
What should people do around rising water?
Do not walk or drive through fast-flowing or rising water. Move away from streams and low-lying areas and follow instructions from emergency officials.
