Honolulu, Hawaii – Torrential rain, gusty winds, and rare summit snow are expected to impact Hawaii this week as a powerful Kona Low spreads unstable weather across the island chain, raising flooding concerns statewide while creating dangerous winter conditions on the Big Island’s highest peaks.
According to the National Weather Service in Honolulu, deep tropical moisture pulled northward by the storm will fuel widespread heavy rainfall and thunderstorms from Kauai to the Big Island through the weekend. Flood Watches remain in place across portions of the islands as repeated rain bands could overwhelm drainage systems and cause streams to rise quickly.
Drivers on Oahu may encounter ponding and poor visibility along major routes including H-1, H-2, and the Pali Highway during bursts of heavier rainfall. Emergency managers urge residents to avoid flooded roads and monitor local alerts as rainfall intensity may increase overnight and into midweek.
The storm will also bring unusual winter conditions to Hawaii’s tallest mountains. The National Weather Service has issued a Winter Storm Watch for Big Island summits above 12,500 feet from Wednesday morning through Friday afternoon. Freezing rain, significant ice accumulation, and snowfall are all possible, with snow totals up to 3 inches and ice up to a quarter inch. Winds could gust as high as 55 mph, dramatically reducing visibility.
Officials warn that ice and snow could make travel to Mauna Kea and Mauna Loa summits extremely difficult or even impossible. Hikers, campers, and anyone planning summit travel are encouraged to postpone trips and closely monitor weather updates until conditions improve.
The Kona Low is expected to keep Hawaii unsettled into the weekend, and additional advisories or warnings could be issued if rainfall or wind intensifies.
