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April 21, 2018 Weather Forecast

April 21, 2018, 6:00 AM HST
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Photo: James Grenz

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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: Hawaii Island high/low forecasted temperatures, projected winds, projected localized weather conditions and expected wave heights.**

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Looking Ahead

Breezy trade wind weather is expected over the weekend and into next week, with clouds and showers focused over windward areas. Some of these showers will blow over to leeward locations on the smaller islands, while the Kona side of the Big Island will see afternoon clouds and showers. Trades will strengthen to locally windy levels next week.

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Hilo

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Today: Scattered showers. Mostly cloudy, with a high near 82. Light and variable wind becoming east 6 to 11 mph in the afternoon. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

Tonight: Scattered showers. Mostly cloudy, with a low around 65. East wind 6 to 11 mph becoming light and variable. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

Sunday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 82. Calm wind becoming northeast 5 to 8 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

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Kona

Today: Scattered showers, mainly after noon. Widespread haze. Partly sunny, with a high near 85. Calm wind becoming west southwest around 6 mph in the afternoon. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

Tonight: Scattered showers before midnight. Widespread haze. Mostly cloudy, with a low around 65. West southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

Sunday: Isolated showers after noon. Widespread haze. Mostly cloudy, with a high near 85. Calm wind becoming west 5 to 8 mph in the afternoon. Chance of precipitation is 20%.

Waimea

Today: Scattered showers. Mostly cloudy, with a high near 76. Breezy, with a northeast wind 11 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.

Tonight: Scattered showers. Mostly cloudy, with a low around 54. Breezy, with a northeast wind 17 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.

Sunday: Scattered showers. Partly sunny, with a high near 76. Windy, with a northeast wind around 24 mph, with gusts as high as 34 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.

Kohala

Today: Scattered showers. Mostly cloudy, with a high near 69. Very windy, with an east wind 25 to 30 mph increasing to 31 to 36 mph in the afternoon. Winds could gust as high as 50 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

Tonight: Scattered showers. Mostly cloudy, with a low around 46. Very windy, with an east wind 29 to 37 mph, with gusts as high as 55 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

Sunday: Scattered showers. Mostly cloudy, with a high near 69. Very windy, with an east wind 24 to 31 mph, with gusts as high as 45 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

South Point

Today: Scattered showers, mainly after noon. Widespread haze. Mostly cloudy, with a high near 85. Windy, with an east wind 23 to 26 mph, with gusts as high as 34 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Tonight: Scattered showers, mainly before midnight. Widespread haze. Mostly cloudy, with a low around 71. Windy, with an east northeast wind around 26 mph, with gusts as high as 34 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Sunday: Isolated showers. Widespread haze. Partly sunny, with a high near 85. Windy, with an east wind 26 to 29 mph, with gusts as high as 37 mph. Chance of precipitation is 20%.

Puna

Today: Scattered showers. Mostly cloudy, with a high near 80. West northwest wind 6 to 14 mph becoming east northeast in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

Tonight: Scattered showers. Mostly cloudy, with a low around 63. Northeast wind 8 to 13 mph becoming north northwest after midnight. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

Sunday: Showers likely, mainly after noon. Mostly cloudy, with a high near 80. North wind 9 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Waikoloa

Today: Scattered showers, mainly after noon. Partly sunny, with a high near 82. East wind 5 to 8 mph becoming west in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Tonight: Scattered showers before midnight. Mostly cloudy, with a low around 64. Breezy, with a light southeast wind becoming east northeast 10 to 15 mph after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Sunday: Partly sunny, with a high near 82. Windy, with an east northeast wind 23 to 26 mph, with gusts as high as 38 mph.

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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