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Weather Alerts Posted Ahead of Unstable Conditions

December 1, 2016, 1:22 AM HST
* Updated November 30, 10:27 PM
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Image: James Grenz

Alerts (as of 1:00 a.m.)

A Flash Flood Watch is posted for the Big Island from Thursday afternoon to Friday afternoon.

A Winter Storm Watch is posted for Mauna Kea and Mauna Loa above 8000 feet. Thursday afternoon through Friday afternoon we could see heavy snow accumulations of 6 inches or more.

A Wind Advisory is up for areas of Hawaii County through 6 a.m. Thursday with winds gusting into the 50’s again.

A High Surf Advisory is posted for east facing shores until 6 p.m. Friday.

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A Gale Warning is posted through 6 a.m. Thursday for our windiest channels and waters.

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A Small Craft Advisory is posted for all remaining Hawaii County waters through 6 p.m. Thursday.

Check our breaking news section for any urgent weather alerts or updates to the weather alerts listed above.

**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

Breezy trade winds are expected through Thursday. A disturbance high in the atmosphere is forecast to keep conditions unstable through Friday. Wet conditions are expected for windward areas with some showers falling into leeward spots from time to time. Locally heavy rainfall with a slight chance of thunderstorms is forecast from late Thursday through Friday with another disturbance expected to approach from the northwest Friday, then linger west of the state through the weekend. This will usher in a period of southeast winds and wet weather through the weekend and into early next week.

 

Today 

Mostly cloudy for windward spots with frequent showers. Hazy for the Kona side with isolated showers in the morning and building clouds in the afternoon with scattered showers. Slight chance of afternoon thunderstorms and locally heavy rainfall. High temperatures from 78° to 83°. Winds will be out of the east from 15 to 25 mph.

UV index at 6 (“high” exposure level)

 

Tonight

Winds will be easterly around 15 mph. Mostly cloudy with frequent showers in windward spots. Isolated showers for leeward areas. Chance of thunderstorms and locally heavy rainfall possible. Low temperatures from 67° to 72°.

 

Our Big Island Now Weather homepage always includes daily: Sunrise | Sunset | Moonrise | Moonset | Moon Phase | Live Weather Cams | 5-day Forecast | Current Temperature & Conditions

**Click here for your detailed Big Island surf report.**

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

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