Kaua‘i Emergency Management urges the public to remain vigilant.
National Weather Service forecasters in Honolulu says a second kona low — the storm that caused catastrophic flash flooding Friday, March 20, on O‘ahu and a soaking parts of Maui County today, March 21 — could still affect the Garden Isle through the weekend.
Residents and visitors alike are advised to monitor weather conditions, local media and official government channels for the latest weather updates and closure information.
County crews and personnel are on standby should their need arise because of severe weather.

Weather forecast
A flood watch remains in effect for Kaua‘i until 6 p.m. Monday, March 22. Conditions are favorable for flooding, and while it is not certain, flooding is possible.
National Weather Service forecasters in Honolulu report unsettled weather will continue through the weekend as the kona low pressure system passes north of the island, bringing periods of moderate to heavy rain, thunderstorms and heightened risk of flash flooding to much of the state.
Intense, fast-moving rain bands could produce rainfall of 2 to 4 inches per hour, along with gusty south to southwest winds of 30 to 45 mph, especially along north and east slopes.
Conditions are expected to gradually improve starting Monday as trade winds return, shifting Kauaʻi back to a more typical weather pattern with lighter, windward showers through next week.
Road closures
- All county roadways are open.
- Flood-prone roadways and other low-lying areas could be closed with little to no notice because of elevated runoff and overflowing streams.
Kaua‘i Island Utility Cooperative
Standard tips to prepare for power outages:
- Use surge protectors to protect appliances and equipment.
- Turn off and unplug all unnecessary appliances or equipment.
- Keep a portable battery-powered radio flashlight with extra batteries.
- Stay away from downed lines and report them to 9-1-1.
Contact Kaua‘i Island Utility Cooperative at 808-246-4300 to update your contact information and receive alerts.
Safety advisory
Hawai‘i Department of Health advises beach users to stay out of waters if they appear brown or murky, especially following storms or heavy rain.
The public is advised to check conditions before venturing out for hiking, river or beach excursions. River and stream crossings, recreational trails and other outdoor recreation areas could quickly become hazardous.
Emergency rescues might not be possible during severe weather. Do not cross swollen rivers or streams; always check with a lifeguard at any lifeguard station before entering the ocean. Know before you go.
Speak with a Kaua‘i County lifeguard, visit the Safe Beach Day website or call the state Ocean Safety Kaua‘i Bureau at 808-241-4984 for up-to-date information about Kaua‘i ocean conditions and safety.

Important contacts and resources
Stay tuned to local media online and via broadcast channels for the most up-to-date information. Here is a list of important on emergency preparedness and resources:
Contact Kaua’i Police Department Dispatch at 808-241-1711 to report non-emergency road hazards.
Other key resources:
- Kaua‘i Emergency Management Agency.
- National Weather Service or via automated weather line at 808-245-6001.
- Road and closure conditions (808-241-1725).
Do not call 9-1-1 unless it is an emergency.
Visit the Kaua‘i Emergency Management website and click “WENS” to sign up for the county’s wireless emergency notifications. You can also call Kaua‘i Emergency Management at 808-241-1800 for additional information and with questions.
This is Kaua‘i County’s final release about possible severe weather from the kona low, pending any future significant changes or updates..
