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Today Light Trades Build, Hazy Skies Leeward

August 28, 2015, 1:55 AM HST
* Updated August 27, 9:57 PM
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There are no weather alerts posted at this time.

**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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Humid conditions are sticking around and the chance of heavy showers is lingering through Friday with flash flooding possible for much of the state. Weak trade winds should begin to fill in Friday with moderate trades expected Saturday. Showers are expected to favor windward and mauka areas, afternoon clouds and spotty showers can be expected over leeward areas. Forecast uncertainty increases significantly on Monday and Tuesday, hinging on the eventual track of hurricane Ignacio. Hurricane Ignacio will approach the Big Island late in the weekend and may threaten the islands early next week. Forecast track errors at that time are more than a couple hundred miles, so it is too early to tell what the direct impacts will be.

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Today

Today we expect mostly sunny skies in the morning becoming mostly cloudy in the afternoon. Scattered showers are expected in windward spots with scattered afternoon showers for leeward spots. Hazy skies are also forecasted for the Kona side (see UHSOEST vog map above). High temperatures from 83° to 88°. Trade winds from 5 to 15 mph are forecasted.

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UV index at 13 (“extreme” exposure level)

 

Tonight

Trade winds are expected this evening from 5 to 15 mph. Low temperatures from 74° to 79°. Mostly cloudy skies are expected with scattered showers for windward spots and clearing as the night goes on for lee spots.

 

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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: UHSOEST

Image: UHSOEST

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

Image: NOAA / NWS

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