The Hawaii Emergency Management Agency (HI-EMA) warned early Friday that a flood watch will be in effect for Niihau and Kauai from Friday afternoon, Feb. 20 through Saturday morning, Feb. 21, as a moisture-laden system creeps toward the western end of the state. Residents and visitors in low-lying areas are being urged to be ready for ponding on roadways, elevated streams and the possibility of flash flooding with little warning.
What HI-EMA Posted
According to the Hawaii Emergency Management Agency, the flood watch covers Niihau and Kauai from Friday afternoon through Saturday morning and is meant as an early heads-up, not a reason to panic. The agency also reminded the public that its social channels are not monitored around the clock and that anyone facing an immediate emergency should call 9-1-1, while everyone else should keep an eye on local forecasts and steer clear of flood-prone roads.
Forecast Context
The National Weather Service in Honolulu issues Flood Watch alerts when conditions are favorable for flash flooding, even if heavy rain has not yet started. Forecasters note that bands of deep moisture tied to an approaching disturbance can bring bursts of heavy rain capable of rapid runoff and flash flooding, especially on windward slopes and in low-lying spots that tend to collect water.
Why Forecasters Are Watching
Longer-range guidance from federal forecasters points to a pattern that can funnel deep tropical moisture into the islands. The Climate Prediction Center highlights an elevated chance of Kona-style low development later in the month, a setup that would likely enhance rainfall over the northwest islands. That background signal helps explain why officials have focused this advisory on Kauai and Niihau.
Local Guidance and County Prep
Kauai County has previously urged residents to avoid driving through standing water and to track county updates for any road closures. As noted by the Kauai County press office, callers can get road and closure information at 808-241-1725 and are encouraged to sign up for the local Wireless Emergency Notification System, according to Kauai County.
Flood Safety Basics
The National Weather Service and federal safety guides stress that even a few inches of moving water can be dangerous, particularly for drivers. “Turn Around, Don’t Drown” remains the go-to rule when you come across a flooded roadway. For practical tips on preparing for and responding to flooding, see the National Weather Service flood safety guide.
Where to Get Updates
Officials urge the public to monitor trusted channels for changes to the forecast. According to the National Weather Service in Honolulu, conditions could change quickly, and flash flood warnings may be issued if heavy downpours develop. Local county pages and NOAA Weather Radio will provide real-time information on road closures and emergency instructions as the system moves through.
