Flash Flood Watch: Through this afternoon. Heavy showers associated with an upper trough and cold front moving down the island chain could result in flash flooding.
Small Craft Advisory: Through 6 p.m. Wednesday for north winds 15 to 25 knots.
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High Wind Warning: Big Island summits through early Tuesday evening. Southwest winds from 55 to 70 mph with gusts up to 85 mph.
**Click directly on the images below to make them larger. Charts include: Big Island high/low forecasted temperatures, projected winds, chance of cloud cover, projected localized weather conditions, vog/SO2 forecast and expected wave heights.**
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Looking Ahead
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Heavy showers and isolated thunderstorms associated with a strong cold front and upper trough could lead to flash flooding across Maui County and the Big Island today. The front will move through Maui County today, then stall out between Maui and the Big Island tonight and Wednesday, before shifting east of the Big Island Wednesday night into Thursday. Cooler and drier air with northerly winds will follow the front through the second half of the week.
Today
We expect southwest winds around 15 to 30 mph. Mostly cloudy skies are forecast with frequent showers and a chance of isolated thunderstorms and locally heavy rainfall. Conditions are expected to slowly improve as the front moves through and away from the islands. Temperatures up to 81° to 86°.
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UV index at 8 (“very high” exposure level)
Tonight
Mostly cloudy skies with numerous showers and a slight chance of thunderstorms. Low temperatures from 72° to 77°. Winds are expected to be out of the northeast around 15 to 20 mph.
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