HONOLULU, Hawaii (HawaiiNewsNow) - Wet, unsettled, and locally breezy weather will persist across most of the island chain through Tuesday, and possibly Wednesday, as a kona low sits several hundred miles west of the state. While the flash flood threat continues state-wide, the greatest risk of flooding will likely be over the already saturated western end of the island chain, where strong thunderstorms are possible. The kona low will slowly lift northward on Thursday and Friday, allowing the heavy rain threat to gradually diminish from east to west. A Flash Flood Watch remains in effect for the entire island chain through Tuesday afternoon, but for the near-term forecast, the main focus for the heavier rainfall appears to be over Kauai County, with the possibility of Oahu getting much wetter early Tuesday morning.
A High Surf Advisory (HSA) is currently in effect for the south and east facing shores of Niihau and Kauai through 6 pm HST Tuesday afternoon. This HSA is likely be extended. Similar conditions could make it into portions southwest Oahu exposed to this direction. A moderate to large west- northwest swell is slated to reach the islands north and west facing shores Thursday night, peak Friday night, then slowly lower over the upcoming weekend. This swell may warrant a HSA for the north and west facing shores.