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Big Island Weather Report: Trade Wind Weather Today

September 23, 2015, 1:18 AM HST
* Updated September 22, 10:20 PM
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Alerts

A Small Craft Advisory is posted for the ʻAlenuihāhā channel as well as waters to the west and south of the Big Island through 6 p.m. Wednesday. East winds up to 25 knots are expected along with rough seas of up to 12 feet. Inexperienced mariners should avoid navigating in these conditions.

**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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Breezy trade winds are expected into next week. While clouds and showers will primarily affect windward coasts and slopes, winds will be strong enough to push showers to leeward areas from time to time. Daytime heating will cause clouds and showers to develop over the Kona slopes each afternoon.

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Today 

We expect partly to mostly cloudy skies for windward Big Island with showers likely in the morning and scattered showers in the during the day. The Kona side will be partly cloudy to start and mostly cloudy with isolated showers each afternoon. High temperatures from 87° to 92°. Northeast winds from 15 to 20 mph.

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UV index at 11 (“extreme” exposure level)

 

Tonight

Northeast winds are expected in the evening from 15 to 20 mph. Low temperatures from 72° to 77°. Mostly cloudy skies are expected in the evening with showers likely for windward spots. Leeward spots should get isolated showers in the evening with a clearing trend as the night goes on.

 

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

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

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