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August 21, 2018 Weather Forecast

August 21, 2018, 7:00 AM HST
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Photo Credit: Chris Archer

Hurricane Watch issued August 21 at 6:46AM HST until further notice by NWS

Our weather team will bring you any urgent weather alerts or updates as they occur. Check our breaking news section for the latest.

**Click directly on the images below to make them larger. Charts include: Maui County high/low forecasted temperatures, projected winds, projected localized weather conditions and expected wave heights.**

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Looking Ahead

High pressure north of the state will provide for a typical trade wind weather pattern across the area today. Clouds and passing showers will favor windward and mauka areas with just a few brief showers expected over select leeward locations. For Wednesday through the remainder of the week into the weekend, our weather pattern will be highly dependent on the track and intensity of Hurricane Lane.

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West Side

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Today: Sunny, with a high near 92. Heat index values as high as 100. Breezy, with an east northeast wind around 16 mph, with gusts as high as 22 mph.

Tonight: Mostly clear, with a low around 74. Breezy, with an east northeast wind around 16 mph, with gusts as high as 22 mph.

Wednesday: Isolated showers after 11am. Mostly sunny, with a high near 90. Heat index values as high as 97. Breezy, with an east northeast wind around 16 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

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South Side

Today: Sunny, with a high near 92. Heat index values as high as 98. East northeast wind 8 to 11 mph becoming south in the morning.

Tonight: Mostly clear, with a low around 73. East northeast wind 11 to 13 mph.

Wednesday: Scattered showers after 10am. Mostly sunny, with a high near 90. Heat index values as high as 96. East northeast wind around 14 mph, with gusts as high as 18 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

North Shore

Today: Sunny, with a high near 91. Heat index values as high as 98. Breezy, with an east wind 16 to 20 mph, with gusts as high as 28 mph.

Tonight: Scattered showers, mainly after 1am. Partly cloudy, with a low around 74. Breezy, with an east northeast wind around 20 mph, with gusts as high as 28 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

Wednesday: Scattered showers. Partly sunny, with a high near 89. Heat index values as high as 96. Breezy, with an east northeast wind around 21 mph, with gusts as high as 29 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

Central Maui

Today: Sunny, with a high near 90. Heat index values as high as 96. Breezy, with a northeast wind 11 to 16 mph, with gusts as high as 22 mph.

Tonight: Scattered showers after 1am. Partly cloudy, with a low around 72. Breezy, with a northeast wind 13 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

Wednesday: Scattered showers. Partly sunny, with a high near 89. Heat index values as high as 96. Breezy, with a northeast wind 13 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

Upcountry

Today: Sunny, with a high near 78. East wind 9 to 11 mph.

Tonight: Mostly clear, with a low around 60. East wind around 11 mph.

Wednesday: Isolated showers after 10am. Increasing clouds, with a high near 76. East wind 11 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.

East Maui

Today: Scattered showers. Partly sunny, with a high near 86. East northeast wind around 11 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

Tonight: Showers likely, mainly after 1am. Mostly cloudy, with a low around 71. East northeast wind around 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Wednesday: Occasional showers. High near 84. East northeast wind 10 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Lanai City

Today: Sunny, with a high near 77. Breezy, with a northeast wind 17 to 22 mph, with gusts as high as 31 mph.

Tonight: Mostly clear, with a low around 69. Breezy, with a northeast wind 18 to 22 mph, with gusts as high as 31 mph.

Wednesday: Mostly sunny, with a high near 77. Windy, with a northeast wind 18 to 23 mph, with gusts as high as 32 mph.

Kaunakakai

Today: Sunny, with a high near 87. Breezy, with an east northeast wind 13 to 17 mph, with gusts as high as 24 mph.

Tonight: Mostly clear, with a low around 74. Breezy, with an east northeast wind around 17 mph, with gusts as high as 24 mph.

Wednesday: Isolated showers after 11am. Mostly sunny, with a high near 87. Breezy, with an east northeast wind 16 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Data Courtesy of NOAA.gov

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