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First Alert Weather Day: Statewide rainfall totals as flood watch nears its end
HONOLULU (HawaiiNewsNow) – The threat for minor flooding and ponding will continue through tonight as a surface trough shifts over the eastern half of the state.
The trough axis has shifted eastward, bringing heavy rain and thunderstorms across Maui County and parts of Hawaii Island, including the Hamakua coast.
All schools on Molokai were closed Wednesday due to flooded roads.
Moderate to heavier showers with isolated thunderstorms will continue along that track through tonight, with lighter showers expected over the western end of the state focused over windward and mauka areas.
The rainfall totals have been beneficial overall with Molokai receiving the most rain and Kauai receiving the least. Heavy pockets have been reported over the mountains. The rainfall totals are under what the original weather models were projecting with some neighborhoods seeing drizzle rather than heavy rain. The upper-level jet and dynamics of this broad trough hasn’t been as significant as the earlier weather model runs that were originally predicting more thunderstorms. With this moist and somewhat unstable airmass, we have benefited from seeing fewer extreme downpours overall. Hawaii Island has seen a trace to about 3 inches of rain, but not everyone seeing the rain. The rain has been limited on Kauai.
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Heavy showers pound Windward Oahu, Maui; most islands under flood watch
This graphic shows a flood watch remains in effect for Oahu, Molokai, Lanai, Maui, Hawaii island and Kahoolawe through late tonight.
The flood advisory for Oahu has been extended to until 11:30 p.m.
“At 9:17 p.m., Doppler radar and automated rain gauges indicated heavy rain over areas of windward Oahu, in particular the towns of Kailua and Kaneohe,” National Weather Service forecasters said in the advisory. “Rain was falling at a rate of 0.5 to 1.5 inches per hour. Minor flooding is ongoing or expected to begin shortly in the advisory area.”
The advisory covers Ahuimanu, Kaneohe, Kahaluu, Kaneohe Marine Base, Waiahole, Maunawili, Kailua, Waikane, Manoa, Kaaawa and Waimanalo.
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