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A flash flood watch remains in effect for Kauai and Oahu through 6 p.m. today as a cold front continues to move across the island chain.
The cold front reached Kauai early Sunday, bringing with it bands of heavy showers. Poipu received 3.8 inches of rain in the 24-hour period ending at 5:45 p.m. Sunday. Puu Opae and Lihue Airport also had 2.4 inches of rain over the same period.
The front made its way to Oahu in the early afternoon, delivering showers to Central Oahu and the North Shore. Punaluu recorded 1.5 inches of rain through 5:45 p.m. The Department of Emergency Management also noted heavy shower activity in Nanakuli, Mililani, Kailua, Laie and Kahuku.
The National Weather Service warns that thundershowers are still possible on Oahu and western Molokai. Showers are expected to diminish as the weakening front moves down the island chain.
Tradewinds are expected to return by midweek, and they might combine with lingering moisture to fuel another round of showers in windward and mauka areas.
In anticipation of an incoming northwest swell, the National Weather Service has also issued a high-surf warning for the north and west shores of Kauai and Niihau and the north shores of Oahu, Molokai and Maui through 6 p.m. today. Surf is expected to reach 20 to 25 feet in those areas.
The public is advised to expect ocean water to sweep across portions of beaches, as well as strong longshore currents and rip currents, and strong breaking waves that could make navigating harbor channels dangerous.
The weather service said anyone entering the water could face significant injury or death, and that boaters should be aware of an increased number of surfers and bodyboarders using harbor channels as access to surfing areas.
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