Heavy Rain, Thunderstorms Possible This Weekend
Alerts (as of 1:00 a.m.)
A Small Craft Advisory is posted for the ʻAlenuihāhā channel through 6 p.m. Saturday.
A Flash Flood Watch is in effect for all islands from Sunday morning through Monday afternoon. Moisture from the remnants of tropical cyclone Howard and a disturbance near the islands will bring together the ingredients for potential unsettled weather. Heavy rains and thunderstorms are possible.
A High Surf Advisory is posted for east facing shores from 6 a.m. Saturday through 6 a.m. Sunday.
**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.**
Fresh to locally breezy trade winds are expected to stay in place through Saturday with clouds and showers favoring our usual windward and mauka spots. Remnant moisture from former Tropical Cyclone Howard will move through over the weekend into early next week, bringing the potential for heavy rainfall and thunderstorms Saturday night through Monday. A Flood Watch goes into effect later this weekend. Trade wind weather should return Tuesday and Wednesday.
Today & Sunday
Mostly cloudy and breezy with scattered showers for windward areas. Hazy skies for the Kona side with scattered showers in the afternoon as cloud cover builds, otherwise mostly clear in the morning. High temperatures from 85° to 90°. Winds will be northeasterly around 15 to 20 mph. On Sunday, mostly cloudy skies for windward spots with a slight chance of thunderstorms and locally heavy rainfall is possible. Numerous showers are expected for the island of Hawaii.
UV index at 13 (“extreme” exposure level)
Tonight & Sunday Night
Winds will be northeasterly around 15 to 20 mph and becoming light and variable. Mostly cloudy with numerous showers for windward spots and gradual clearing as the night goes on for lee areas. Low temperatures from 74° to 79°. On Sunday night there will be a slight chance of thunderstorms and locally heavy rainfall is possible. Scattered showers are expected for the leeward side.
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